462 ILUNOfS CfOLOGICAt SORVIY USRARY STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION SULFUR REDUCTION OF ILLINOIS COALS- WASHABILITY STUDIES. PART 1. R. J. Helfinstine N. F. Shimp J. A. Simon M. E. Hopkins CIRCULAR 462 1971 ILLINOIS STATE GEOLOGICAL SURVEY URBANA, ILLINOIS 61801 John C. Frye, Chief Digitized by the Internet Archive in 2012 with funding from University of Illinois Urbana-Champaign http://archive.org/details/sulfurreductiono462helf SULFUR REDUCTION OF ILLINOIS COALS WASHABILITY STUDIES. PART 1. R. J. Helfinstine, N. F. Shimp, J. A. Simon, and M. E. Hopkins ABSTRACT When coal is completely burned, the sulfur that it contains is converted to sulfur dioxide (SO^) and discharged into the atmosphere unless special control techniques are used. Obviously, removing sulfur from the coal priorto its combustion is one way to reduce SCL pollution in the air. The amount of sulfur that can be removed from coals by physical methods varies widely and depends upon both the characteristics of the coal and the type of preparation equipment used. Laboratory washability (float-and-sink) tests are used to determine the potential reduction of sulfur in the coal. This report gives the results of washability tests made on 3 7 samples taken from 32 Illinois mines; eight dif- ferent seams are represented. The amount of sulfur re- moved from these coals varied from about 10 percent to 50 percent and averaged about 25 percent. Most of the coal samples as received contained from 3 to 5 percent sulfur that could be reduced, with acceptable percentage of re- ject, to 2.5 to 4 percent sulfur. Only those coals that had 2 percent or less sulfur in the raw coal samples could be prepared to contain 1 .5 percent or less sulfur (dry basis) with a reasonable recovery. 2 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 INTRODUCTION When coal is burned, virtually all of the sulfur contained in the coal is released as sulfur dioxide (SO ), which normally passes out of the stack and into the atmosphere. A major objective of many current pollution control projects is the reduction of this SO discharge. One way to reduce the emission of S0 2 from coal-fired combustion units is to reduce the percentage of sulfur in the coal being burned . The sulfur content of coal can be reduced in preparation plants by discard- ing, or "rejecting," pyrite (FeSJ and coal that has a high percentage of pyrite. This separation process, often called "washing," is possible because of the difference in specific gravity of the coal and the associated pyrite. The potential reduction in sulfur (and ash) that can be obtained with a coal can be determined by making float- and- sink (washability) tests with the coal in a laboratory. As described in more detail later in this report, this process is essentially one of determining the weight percentages and chemical compositions of the material that is collected from liquid baths of different specific gravities. The percentage of coal that floats is commonly called "recovery," and the mater- ial that sinks is often called "reject." A commercial preparation plant cannot provide as precise a separation of float- and- sink products as that obtained in the laboratory . This report describes the tests made on 37 Illinois coals to provide infor- mation about possible sulfur reductions by gravity separations. This testing program will be continued until coals from most of the operating mines in Illinois have been studied. Acknowledgments The U. S. Public Health Service, Department of Health, Education and Welfare, through contract No. PH 86-67-206, provided substantial support for this study. We wish to thank the coal companies for their invaluable assistance in obtaining samples and for their permission to identify the sources of the samples described in this report. OBJECTIVES OF THE INVESTIGATION The primary aim of this investigation was to study the washability characteristics of Illinois coals, with particular emphasis on the quantity, dis- tribution, and varieties (forms) of sulfur in the coals. The data developed are useful for (1) determining how much sulfur can be removed from coal from various seams, or from different areas within the same seam, by conventional preparation techniques; (2) evaluating the influence of coal size upon sulfur removal; and (3) evaluating the refuse from Illinois coal preparation plants as a possible source of pyrite for the recovery of sulfur or for the manufacture of sulfuric acid . A secondary objective of this investigation has been the comprehen- sive study of other chemical and physical properties of Illinois coals, including SULFUR REDUCTION OF ILLINOIS COALS 3 research on trace elements, coal petrography, palynology, and mineral matter other than sulfur compounds. Some of these data are included in this report, and more will be published later. PROCEDURE Samples The 37 coal samples described in this report were taken from 32 mines, as shown in figure 1 and table 1 . The seams sampled were: Danville (No. 7) Coal - 1 mine; Herrin (No. 6) Coal - 17 mines; Harrisburg or Springfield (No. 5) Coal - 10 mines; Summum (No. 4) Coal - 2 mines; Colchester (No. 2) Coal - 4 mines; De Koven Coal - 1 mine; Davis Coal - 1 mine; Rock Island (No. 1) Coal - 1 mine. The total number of samples is greater than the number of mines because several mines produced coal from more than one seam. Coal from each seam was separately sampled and treated. In each case an attempt was made to obtain for the washability (float- and-sink) studies a raw coal sample that was representative of the coal received by the preparation plant during one shift of operation. A sample of 2, 000 pounds, made up of 20 to 30 increments taken at uniform time intervals throughout a work- ing shift, was desired. However, in many cases fewer increments were taken because sampling conditions were poor. The samples, therefore, may not be representative of the output for the operating shift and should not be considered as representative of the output of the mine for an extended period, but they are considered to be superior to grab samples. At several strip mines, coals from different seams were being mixed at the preparation plant and it was not practical to obtain a single- seam sample from the tipple. In these cases, approximately 2, 000-pound column samples were cut from freshly exposed faces in the pits. In addition to the raw coal samples, channel samples (usually three) of about 50 pounds each were cut from the coal face in different areas of each mine. Mineral bands that were three- eighths of an inch or more in thickness were ex- cluded from these samples in accordance with U. S. Bureau of Mines procedures (Holmes, 1911). Crushing, Sizing, and Float-and-Sink The 1-ton sample of raw coal that was obtained from a mine was crushed with a jaw crusher to a maximum size of 1 1/2 inches in the laboratory. The crushed coal was quartered and riffled and five representative samples of approx- imately 50 pounds each were taken for float-and-sink separations at five different gravities.* An attempt was made to select for the float-and-sink procedures, for each coal, liquids having gravities that would yield float recoveries of about 20, 40, and 60 percent. In addition, liquid gravities of 1 .40 and 1 .60 were used for all coals . Appropriate mixtures of naphtha and perchloro-ethylene were used to ob- tain liquids of the gravity desired for the separations. *The 1 1/2-inch x samples from three mines were floated progressively in the manner described later for the 3/8-inch x 14-mesh coal samples. ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 20 Mine Limit of coal-bearing sequence jfcLMR Fig. 1 - Locations of mines sampled SULFUR REDUCTION OF ILLINOIS COALS TABLE 1 - SOURCES OF SAMPLES Sam- ple County Company Mine Seam 1 Adams 2 Christian 3 Franklin 4 Franklin 5 Franklin 6 Fulton 7 Fulton 8 Fulton 9 Gallatin lot Gallatin 11 Jefferson 12 Jefferson 13 Kankakee$ 14| KankakeeJ 15 Logan 16 Macoupin 17 Mercer 18 Montgomery 19 Montgomery 20 Peoria 21 Peoria 22 PeoriaJ 23 Perry 24 Perry 25t Perry 26| Randolph 27 St. Clair 28 Saline 29 Saline 30 Vermilion 31 Vermilion 32 Washington 33 Williamson 34 Williamson 35f Williamson^ 36| WilliamsonJ 37| WilliamsonJ Triple "S" Mines, Inc.* Peabody Coal Company Freeman Coal Mining Corp. Old Ben Coal Corp. Old Ben Coal Corp. Ayrshire Coal Company* Truax-Traer Coal Company* United Electric Coal Cos.* Peabody Coal Company Peabody Coal Company* Freeman Coal Mining Corp. Freeman Coal Mining Corp. Peabody Coal Company* Peabody Coal Company* El-B Coal Company Florida Coal Company Hazel Dell Coal Corp. Freeman Coal Mining Corp. Truax-Traer Coal Company Peabody Coal Company* Sherwood-Temple ton* United Electric Coal Cos.* Southwestern Illinois Coal Corp.* Southwestern Illinois Coal Corp.* United Electric Coal Cos.* Truax-Traer Coal Company* Peabody Coal Company* Sahara Coal Co., Inc. Sahara Coal Co., Inc. Ayrshire Coal Company* V-Day Coal Company Venedy Coal Company Freeman Coal Mining Corp. Peabody Coal Company* Peabody Coal Company* Peabody Coal Company* Peabody Coal Company* Triple S 2 No. 10 6 Orient No. 5 6 No. 21 6 No. 26 5° Sun Spot 2 Fiatt 5 Buckhart No. 17 5 Eagle U. G. 5 Eagle Strip 6 Orient No. 3 6 Orient No. 6 6 Northern 2 Northern 4 El-Ben No. 2 5 Little Dog 6 No. 1 1 Crown 6 Hillsboro 6 Edwards 6 Pioneer 6 Banner 2 Captain 6 Captain 5 Fidelity No. 11 6 Burning Star No. 3 5 River King 6 No. 5 5 No. 16 5 Harmattan 7 V-Day 6 Venedy 6 Orient No. 4 6 Forsyth-Energy 5 Will Scarlet 4 Will Scarlet Davis Will Scarlet DeKoven * Strip mine. ° Coal sampled is not the coal being mined, t Column sample. I Other counties also involved. A sixth representative sample of about 100 pounds of the 1 l/2-inch x coal was crushed to a top size of 1/8 inch and riffled to give samples for chemical analyses. A seventh representative sample of about 200 pounds of the 1 1/2 -inch x coal was crushed to a top size of 3/8 inch in a roll crusher. This coal was then screened to obtain 3/8-inch x 14-mesh, 14-mesh x 100-mesh, and 100-mesh x fractions . 6 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 The 3/8-inch x 14-mesh coal was floated progressively in the following manner. Approximately 100 pounds of the raw, sized coal was placed in the lightest gravity solution for separation. The resulting float fraction was dried, weighed, crushed, and sampled for chemical analyses. The sink fraction from this first separation was placed in the next heavier solution, and again the float coal was dried, weighed, crushed, and sampled. The second sink product was placed in the next heavier solution and the float material was processed as before. This procedure was repeated until the desired number of gravity separations had been made. The sink material from the separation with the heaviest solution (1.60 specific gravity) was dried, weighed, crushed, and sampled for chemical analyses. The float- and- sink procedure with the 14-mesh x 100-mesh coal was simi- lar to that with the 1 l/2-inch x coal. The sized sample was divided into repre- sentative fractions, each of which was placed in the liquid of the gravity desired for float- and- sink. Gravity separations of fine coal are difficult with any coal and are par- ticularly difficult with Illinois coals, which are quite porous . The liquid used for the separation rapidly penetrates the pores and thereby exerts a major influence on the results. Although some tests were made with the 100-mesh x coals, the results were not considered satisfactory and are not reported. Chemical Analyses Chemical analyses, which included determinations of percentages of ash, sulfate sulfur, pyritic sulfur, organic sulfur, and total sulfur, were made on all float fractions and on some sink fractions. The Hardgrove grindability of the coal and the fusibility of the ash were determined for the lightest, intermediate, and heaviest (1 .60 gravity) float fractions of the 1 1/2-inch x coal. Proximate analyses and determinations of total sulfur, forms of sulfur, heating value, and free swelling index were made on the raw coal as received, on the sized fractions, and on the channel samples. Chlorine analyses also were made on the channel samples. Ultimate analysis, free swelling index, ash fusion temperature, and Gieseler plasticity tests were made on a composite of the three face-channel samples. Unless otherwise specified, all chemical values given in this report are on the dry basis. A large percentage of the analyses were done by the Illinois State Geological Survey's Analytical Chemistry Section; these were supplemented by analyses made by the Commercial Testing and Engineering Company, Chicago, Illinois, under a subcontract. Computer The data obtained from the study were punched on cards and an IBM 360- 75 computer was used in the compilation of the tables. In addition, a computer program was developed to give, for any desired recovery, percentages of total sulfur, pyritic sulfur, and ash that would approximate those percentages obtained from a smooth curve constructed from the data points . A random check of values given by the computer and of those obtained from graphs indicated a fairly close agreement in most cases. However, in a few cases the computer program did SULFUR REDUCTION OF ILLINOIS COALS 7 not adequately compensate for erratic datum points . Therefore the data should be plotted and interpolations made from the curves if more precision is desired than that provided by the computer program . RESULTS Precision of Data The appendix lists the pertinent data, as given by an IBM 360-75 computer, from the float-and-sink tests for each sample. The percentages of ash given in the appendix and elsewhere in this report are shown to the nearest 0.1 percent; however, variations of 0.1 percent are not considered significant. The percent- ages of sulfur are shown to the nearest 0.01 percent, which far exceeds test precision. Table 2 shows the analytical variation in sulfur allowed by the American Society for Testing and Materials for representative samples taken from the same bulk samples after the last stage of reduction. TABLE 2 - PERMISSIBLE DIFFERENCES IN SULFUR AND ASH ANALYSES* Same Different laboratory laboratory (percent) (percent) Pyritic sulfur, under 2% 0.05 0.30 Pyritic sulfur, 27> or more 0.10 0.40 Total sulfur, under 27o 0.05 0.10 Total sulfur, 27, or more 0.10 0.20 Ash, i 10 carbonates present 0.2 0.3 Ash, carbonates present 0.3 0.5 Ash, with more than 12% ash and containing carbonates and pyrite 0.5 1.0 *ASTM Standards, Part 19, pages 46 an d 439 , 1968. Although the specific gravities used for the tests were readily measured to the third decimal place, differences of .005 are not considered significant. Cumulative weights (recoveries) are shown to one decimal place although varia- tions of 0.1 are likewise not significant. The method of separation, particularly the speed of the operation, and the moisture content of the coal have consider- able influence on results. Although the same general procedure was used for each size fraction, variations in moisture definitely influenced the results . The chemical analyses listed for the sink fractions in the appendix are calculated values, except for those for the 1 .60 sink fraction of the 3/8-inch x 14- mesh coal. The calculations are based upon the premise that the sum of the quantities of ash (or sulfur) in the float fraction and the sink fraction must equal the quantity of ash (or sulfur) in the original sample (raw coal). A study of the tabulated data disclosed that the calculations frequently gave improbable, and occasionally, impossible results. An example is the calculation of more than ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 3 - EFFECT OF SIZE ON ASH AND SULFUR IN THE 1.60 FLOAT FRACTIONS Samp- Pi" Ash Total sulfur (X) Pyritic sulfur (X) Size A* Sice B* Size C* A minus B A minus C B minus C Size A* Size B* Size C* A B A C B minus C Size A* Size B* Size C* A minus A minus C B minus C 1 6.1 5.6 7.9 0.5 -1.8 -2.3 3.10 3.06 2.62 0.04 0.48 0.44 1.39 1.67 0.89 -0.28 0.50 0.78 2 9.5 9.0 9.1 0.5 0.4 -0.1 3.94 3.81 3.63 0.13 0.31 0.18 1.35 1.40 1.17 -0.05 0.18 0.23 3 8.2 7.4 7.1 0.8 1.1 0.3 2.57 2.48 2.31 0.09 0.26 0.17 1.03 0.96 0.72 0.07 0.31 0.24 4 7.4 7.6 6.3 -0.2 1.1 • 1.3 1.14 0.93 1.00 0.21 0.14 -0.07 0.48 0.42 0.37 0.06 0.11 0.05 5 10.5 9.9 10.3 0.6 0.2 -0.4 3.35 3.23 3.26 0.12 0.09 -0.03 1.58 1.4B 1.4? 0.10 0.16 0.06 6 7.0 7.5 8.3 -0.5 -1.3 -0.8 3.01 3.21 2.78 -0.20 0.23 0.43 1.54 1.93 1.11 -0.39 0.43 0.82 7 10.6 9.9 10.5 0.7 0.1 -0.6 3.22 2.91 2.93 0.31 0.29 -0.02 1.02 0.89 0.67 0.13 0.35 0.22 8 12.7 9.8 11.3 2.9 1.4 -1.5 3.43 3.09 3.05 0.34 0.38 0.04 1.25 I. 11 0.92 0.14 0.33 0.19 9 10. a 9.8 9.8 1.0 1.0 -0.0 2.92 2.61 2.45 0.31 0.47 0.16 1.23 0.85 0.86 0.38 0.37 -0.01 10 7.7 6.8 6.7 0.9 l.C 0.1 2.63 2.62 2.30 0.01 0.33 0.32 0.94 0.83 0.68 0.11 0.26 0.15 11 8.0 7.6 6.6 0.4 1.4 1.0 0.92 1.13 1.17 -0.21 -0.25 -0.04 0.54 0.56 0.36 -0.02 0.18 0.20 12 8.1 7.8 7.0 0.3 1.1 0.8 1.54 1.45 1.35 0.09 0.19 0.10 0.77 0.78 0.63 -0.01 0.14 0.15 13 7.9 5.9 7.1 2.0 0.8 -1.2 2.51 2.26 1.98 0.25 0.53 0.28 1.75 1.34 1.01 0.41 0.74 0.33 14 8.7 8.3 7.0 0.4 1.7 1.3 3.60 3. 36 3.35 0.24 0.25 0.01 1.28 0.76 0.71 0.52 0.57 0.05 15 11.8 10.6 9.4 1.2 2.4 1.2 3.45 3.19 2.89 0.26 0.56 0.30 1.15 1.29 0.88 -0.14 0.27 0.41 16 10.1 9.6 8.5 0.5 1.6 1.1 4.45 4.37 3.98 0.08 0.47 0.39 1.35 1.20 0.79 0.15 0.56 0.41 17 7.5 6.9 5.7 0.6 1.8 1.2 4.20 4.12 3.71 0.08 0.49 0.41 2.30 1.80 1.37 0.50 0.93 0.43 18 9.5 8.9 8.0 0.6 1.5 0.9 3.97 3.89 3.60 0.08 0.37 0.29 1.26 1.19 0.71 0.07 0.55 0.48 19 10.1 8.4 7.1 1.7 3.0 1.3 3.62 3.54 3.34 0.08 0.28 0.20 1.64 1.47 0.96 0.17 0.68 0.51 20 8.3 8.9 7.2 -0.6 1. 1 1.7 2.77 2.71 2.51 0.06 0.26 0.20 0.73 0.50 0.66 0.23 0.07 -0.16 21 7.6 7.8 8.5 -0.2 -0.9 -0.7 3.28 2.86 2.84 0.42 0.44 0.02 1.21 1.04 0.83 0.17 0.38 0.21 22 6.7 5.3 5.9 1.4 0.8 -0.6 3.11 2.90 3.00 0.21 0.11 -0.10 1.19 1.13 0.74 0.06 0.45 0.39 23 9.C 9.0 7.6 0.0 1.4 1.4 2.97 2.84 2.77 0.13 0.20 0.07 0.96 0.85 0.7? 0.11 0.24 0.13 24 9.7 9.2 8.7 0.5 1.0 0.5 3.83 3.83 3.49 -0.00 0.34 0.34 1.70 1.33 1.01 0.37 0.69 0.32 25 9.1 8.7 6.9 0.4 2.2 1.8 3.21 2.92 2.62 0.29 0.59 0.30 1.33 1.03 0.74 0.30 0.59 0.29 26 9.1 8.3 8.6 0.8 0.5 -0.3 4.48 4.12 3.61 0.36 0.87 0.51 1.61 1.58 0.99 0.03 0.62 0.59 27 10.8 1C.9 12.8 -0.1 -2.0 -1.9 3.47 3.52 2.90 -0.05 0.57 0.62 1.18 1.22 0.75 -0.04 0.43 0.47 28 7.5 7.7 6.9 -0.2 0.6 0.8 2.16 1.88 1.92 0.28 0.24 -0.04 1.35 1.21 0.72 0.14 0.63 0.49 29 8.0 7.2 6.6 0.8 1.4 0.6 1.30 1.09 1.16 0.21 0.14 -0.07 0.67 0.55 0.48 0.12 0.19 0.07 30 8.9 8.7 8.1 0.2 0.8 0.6 3.03 3.00 2.81 0.03 0.22 0.19 0.95 1.02 0.99 -0.07 -0.04 0.03 31 7.4 6.7 6.6 0.7 0.8 0.1 1.06 1.02 1.07 0.04 -0.01 -0.05 0.43 0.48 0.43 -0.05 0.0 0.05 32 9.2 9.1 8.1 0.1 1.1 1.0 3.26 3.29 3.10 -0.03 0.16 0.19 0.85 0.78 0.7? 0.07 0.13 0.06 33 8.3 8.0 7.2 0.3 1.1 0.8 1.46 1.37 1.28 0.09 0.18 0.09 0.52 0.43 0.72 0.09 -0.20 -0.29 34 10. C 9.9 10.0 0.1 0.0 -0.1 2.70 2.76 2.31 -0.06 0.39 0.45 1.54 1.18 1.34 0.36 0.20 -0.16 35 9.1 7.8 6.9 1.3 2.2 0.9 3.71 3.49 2.94 0.22 0.77 0.55 1.93 1.37 0.93 0.56 1.00 0.44 36 12.1 10.8 9.1 1.3 3.0 1.7 3.28 3.20 2.91 0.08 0.37 0.29 1.79 1.50 1.28 0.29 0.51 0.22 37 10.1 8.8 6.9 1.3 3.2 1.9 4.37 3.91 3.53 0.46 0.84 0.38 2.41 1.96 1.83 0.45 0.58 0.13 AVERAGE 9.0 8.4 8.0 0.6 3/8 In. 1.0 x 14 m 0.4 ■sh; Size C 3.00 - 14 2.86 mesh x 100 2.66 mesh. 0.14 0.34 0.20 1.25 1.11 0.87 0.14 0.38 0.24 *Size A - 1* in • x 0; SUe B - SULFUR REDUCTION OF ILLINOIS COALS TABLE 4 - EFFECT OF SIZE ON THE PERCENTAGE RECOVERY OF COAL Sample 1.60 specific gravity 1.40 specific gravity A minus B A minus C B minus C D minus E D minus F E minus F 1% In. x A 3/8 In. x 14 mesh B 14 mesh x 100 mesh C H In. x D 3/8 In. x 14 mesh E 14 mesh x 100 mesh F 1 85.3 84.1 71.8 80.8 80.8 59.6 2 81.3 79.7 71.6 72.0 71.4 60.7 3 85.3 85.2 80.6 77.3 77.7 71.1 4 90.3 91.5 88.9 82.3 85.2 81.2 5 87.2 86.2 71.3 73.5 70.3 56.5 6 76.8 79.3 53.8 68.4 71.9 46.4 7 84.2 80.6 67.5 74.6 70.7 47.3 8 87.6 88.1 77.1 78.2 75.2 70.2 9 77.9 79.5 77.0 62.9 69.7 61.7 10 83.4 87.4 73.9 80.8 82.0 66.3 11 85.4 84.4 81.2 81.1 80.1 71.6 12 78.2 76.0 78.3 71.8 62.6 71.8 13 80.6 84.0 70.8 77.5 79.4 58.7 14 90.3 92.8 85.8 85.5 88.7 75.8 15 82.2 82.7 77.3 77.? 76.2 67.6 16 91.5 87.7 83.0 89.9 81.3 70.6 17 92.0 90.9 83.3 85.7 84.8 78.5 18 86.5 88.6 81.6 78.9 81.6 68.2 19 85.1 86.1 83.0 74.0 68.8 69.9 20 65.9 67.9 5 3.1 61.8 56.9 45.4 21 64.3 58.3 38.6 57.7 52.3 32.4 22 82.5 87.7 70.6 75.1 83.2 62.8 23 82.2 84.7 71.0 73.6 75.7 62.2 24 92.2 91.8 86.3 80.5 78.2 75.5 25 85.9 85.3 77.5 76.6 72.6 66.7 26 91.8 93.8 85.6 80.2 85.4 68.4 27 88.9 88.3 68.4 76.0 77.4 47.2 28 88.3 89.3 80.8 83.4 85.9 68.2 29 73.4 75.8 70.3 67.4 69.1 62.0 30 87.3 84.5 72.3 80.3 76.3 60.3 31 87.6 86.9 80.3 80.4 82.6 73.1 32 91.0 90.8 83.6 83.0 81.5 65.7 33 78.0 79.4 77.0 70.9 71.7 67.3 34 85.8 87.9 69.6 69.6 81.4 58.6 35 89.0 90.2 82.7 73.9 79.5 67.0 36 83.3 84.2 76.4 69.2 72.9 65.4 37 82.0 88.0 77.4 74.5 79.7 69.1 1.2 13.5 12.3 0.0 21.2 21.2 1.6 9.7 8.1 0.6 11.3 10.7 0.1 4.7 4.6 -0.4 6.2 6.6 1.2 1.4 2.6 -2.9 1.1 4.0 1.0 15.9 14.9 3.2 17.0 13.8 ■2.5 23,0 25.5 -3.5 22.0 25.5 3.6 16.7 13.1 3.9 27.3 23.4 ■0.5 10.5 11.0 3.0 8.0 5.0 1.6 0.9 2.5 -6.8 1.2 8.0 4.0 9.5 13.5 -1.2 14.5 15.7 1.0 4.2 3.2 1.0 9.5 8.5 2.2 -0.1 -2.3 9.2 0.0 -9.2 3.4 9.8 13.2 -1.9 18.8 20.7 ■2.5 4.5 7.0 -3.2 9.7 12.9 0.5 4.9 5.4 1.0 9.6 8.6 3.8 8.5 4.7 8.6 19.3 10.7 1.1 8.7 7.6 0.9 7.2 6.3 2.1 4.9 7.0 -2.7 10.7 13.4 1.0 2.1 3.1 5.2 4.1 -l.l 2.0 12.8 14.8 4.9 16.4 11.5 6.0 25.7 19.7 5.4 25.3 19.9 5.2 11.9 17.1 -8.1 12.3 20.4 2.5 11.2 13.7 -2.1 11.4 13.5 0.4 5.9 5.5 2.3 5.0 2.7 0.6 8.4 7.8 4.0 9.9 5.9 2.0 6.2 8.2 -5.2 11.8 17.0 0.6 20.5 19.9 -1.4 28.8 30.2 1.0 7.5 8.5 -2.5 15.2 17.7 2.4 3.1 5.5 -1.7 5.4 7.1 2.8 15.0 12.2 4.0 20.0 16.0 0.7 7.3 6.6 -2.2 7.3 9.5 0.2 7.4 7.2 1.5 17.3 15.8 1.4 1.0 2.4 -0.8 3.6 4.4 2.1 16.2 18.3 -11.8 11.0 22.8 1.2 6.3 7.5 -5.6 6.9 12.5 0.9 6.9 7.8 -3.7 3.8 7.5 6.0 4.6 10.6 -5.2 5.4 10.6 AVERAGE 84.1 10 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 5 - EFFECT OF SIZE ON ASH AND SULFUR WITH 80 PERCENT RECOVERY Samp- ple Ash (7.) Total sulfur (7.) Pyritic sulfur (X) Size A* Size B* C* A minus B A C B minus C Size A* Size B* Size C* A minus B A minus C minus C Size A* Size B* Size C* A minus B A minus C minus C 1 5.4 5.2 9.5 0.2 -4.2 -4.4 2.88 2.88 2.74 -0.00 0.13 0.13 1.25 1.51 I. 00 -0.26 0.24 0.51 2 9.2 9.0 10.4 0.2 -1.2 -1.4 3.91 3.80 3.78 0.11 0.13 0.02 1.28 1.37 1.33 -0.09 -0.05 0.04 3 7.3 6.7 6.9 0.5 0.3 -0.2 2.40 2.41 2.30 -0.01 0.10 0.11 0.89 0.88 0.71 0.01 0.18 0.17 4 6.0 6.2 5.0 -0.2 1.0 1.2 0.94 0.90 0.98 0.04 -0.04 -0.08 0.40 0.38 0.32 0.02 0.08 0.06 5 9.5 9.1 12.0 0.3 -2.5 -2.8 3.04 3.04 3.51 -0.00 -0.48 -0.47 1.25 1.26 1.64 -0.01 -0.38 -0.38 6 7.5 7.2 18.1 0.4 -10.5 -10.9 2.95 3.18 3.98 -0.24 -1.03 -0.80 1.52 1.89 2.41 -0.37 -0.89 -0.51 7 10. 9.6 12.8 0.3 -2.9 -3.2 3.03 2.86 3.12 0.17 -0.10 -0.26 0.88 0.86 0.B3 0.02 0.05 0.03 8 11.5 8.8 11.4 2.8 0.1 -2.6 3.16 2.85 3.05 0„31 0.11 -0.20 1.00 0.89 0.93 0.12 0.08 -0.04 9 11. 1 9.7 10.4 1.5 0.7 -0.8 2.96 2.58 2.48 0.38 0.48 0.09 1.27 0.82 0.93 0.45 0.34 -0.11 10 6.8 5.8 7.7 1.0 -0.9 -1.9 2.57 2.49 2.37 0.03 0.20 0.12 0.80 0.69 0.78 0.10 0.02 -0.09 11 7.3 6.9 6.4 0.3 0.9 0.6 0.88 1.09 1.16 -0.21 -0.28 -0.07 0.51 0.53 0.35 -0.02 0.16 0.18 12 8.1 8.4 7.4 -0.3 0.7 0.9 1.52 1.48 1.38 0.04 0.15 0.10 0.74 0.B1 0.66 -0.07 0.09 0.16 13 7.4 5.2 8.4 2.2 -1.0 -3.2 2.48 2.11 2.16 0.36 0.31 -0.05 1.58 1.21 1.15 0.37 0.44 0.06 14 7.5 7.0 6.0 0.5 1.5 1.0 3.36 3.25 3.30 0.11 0.06 -0.05 0.88 0.66 0.60 0.22 0.28 0.06 15 10.8 10.1 9.7 0.7 1.2 0.5 3.27 3.07 2.93 0.20 0.35 0.15 0.99 1.16 0.90 -0.17 0.09 0.26 16 8.3 8.5 7.9 -0.3 0.4 0.7 4.23 4.18 3.95 0.05 0.28 0.24 0.93 0.99 0.72 -0.06 0.21 0.27 17 5.6 5.7 5.0 -0.1 0.6 0.7 3.65 3.62 3.43 0.03 0.2? 0.19 1.60 1.30 1.12 0.30 0.48 0.18 18 8.7 7.8 7.6 0.9 1.0 0.1 3.81 3.71 3.57 0.10 0.25 0.15 1.06 0.99 0.68 0.08 0.38 0.30 19 8.8 7.5 6.6 1.3 2.3 1.0 3.49 3.42 3.27 0.07 0.22 0. 14 1.41 1.31 0.86 0.10 0.55 0.45 20 11.3 12.0 18.4 -0.8 -7.1 -6.3 2.79 2.85 2.67 -0.06 0.12 0.18 1.06 0.52 1.12 0.54 -0.06 -0.60 21 11.9 13.9 18.0* -2.0 -6. 1 4.1 3.50* 3.51 3.20* -0.01 -0.30 -0.31 1.82 1.59 1.38* 0.22 0.44 0.21 22 5.9 4.4 7.3 1.6 -1.3 -2.9 3.03 2.67 3.20 0.36 -0.17 -0.53 1.12 0.87 0.97 0.26 0.15 -0. 11 23 8.8 8. 1 9.8 0.6 -1.0 -1.6 2.93 2.77 2.91 0.17 0.02 -0.15 0.91 0.75 0.90 0.16 0.01 -0.15 2* 8.6 7.9 7.6 0.8 1.0 0.3 3.40 3.39 3.30 0.00 0.10 0.09 1.12 0.91 0.8? 0.22 0.31 0.09 25 8.3 8.0 7.3 0.3 0.9 0.6 3.08 2.85 2.64 0.23 0.44 0.21 1.08 0.93 0.76 0.14 0.31 0.17 26 7.9 6.8 7.7 1.2 0.2 -0.9 3.96 3.65 3.50 0. 31 0.46 0.15 1.19 1.05 0.90 0.13 0.?9 0.16 27 9.8 9.5 16.3 0.3 -6.5 -6.8 3.33 3.36 2.88 -0.03 0.46 0.48 0.97 1.01 0.91 -0.04 0.07 0.10 28 6.8 6.8 6.8 0.0 0.1 0.0 1.94 1.67 1.83 0.27 0. 11 -0.15 1.15 0.98 0.69 0.18 0.47 0.29 29 8.7 7.5 8.4 l.l 0.3 -0.9 1 .20* 1.12 1.29 0.08 -0.09 -0.17 0.48* 0.59 0.6? -0.1 1 -0.14 -0.03 30 7.9 8. 1 9.2 -0.2 -1.3 -l.l 2.96 2.94 2.94 0.02 0.02 -0.00 0.87 0.95 1.13 -0.08 -0.26 -0.18 31 6.5 5.7 6.4 0.8 0.1 -0.6 1.03 0.98 1.06 0.06 -0.03 -0.09 0.40 0.43 0.40 -0.03 -0.00 0.02 3? 7.7 7.5 7.4 0.2 0.4 0.2 3.16 3.20 3.08 -0.04 0.09 0.12 0.61 0.64 0.67 -0.04 -0.06 -0.02 33 8.9 8. 1 8.4 0.8 0.4 -0.3 1.45 1.37 1.37 0.07 0.08 0.01 0.58 0.44 0.80 0.14 -0.22 -0.36 34 9.5 9.0 12.7 0.5 -3.1 -3.7 2.56 2.51 2.60 0.05 -0.05 -0.09 1.29 0.91 1.77 0.38 -0.48 -0.86 35 8.0 6.6 6.5 1.4 1.5 0.1 3.3? 3.11 2.84 0.21 0.48 0.26 1.48 0.96 0.86 0.52 0.62 0.11 36 1 1.6 10.3 9.6 1.3 2.0 0.7 3.15 3.06 2.97 0.09 0.18 0.09 1.65 1.34 1.37 0.31 0.?9 -0.03 37 9.8 7.9 7. 1 1.9 2.7 0.8 4.26 3.70 3.55 0.56 0.71 0.15 2.29 1.77 1.83 0.51 0.46 -0.05 AVFRAGE 8.5 7.9 9.3 0.6 -0.8 -1 .4 2.86 2.75 2.74 0.11 0.12 0.01 1.09 0.98 0.97 0.11 0.12 0.01 *Slze A = 1* In. x 0; Size B * 3'8 in. Obtained from plotted data. 14 mesh; Size C 14 mesh x 100 mesh. SULFUR REDUCTION OF ILLINOIS COALS 11 100 percent ash in the 1 .60 sink fraction of the 1 1/2-inch x coal of sample 21 . Some of the calculated values for the forms of sulfur in the sink fraction are wrong. For example, the percentage of pyritic sulfur is occasionally greater than that of the total sulfur. A consideration of the allowable analytical tolerance (table 2) and of other possible measurement errors indicates that such discrep- ancies are inevitable; however, they are not considered serious. EFFECT OF COAL SIZE ON ASH AND SULFUR One of the aims of this study was to determine how coal size affected the potential reduction of sulfur and ash. One way to make this determination is to compare the percentages of sulfur and ash in the 1 .60 specific gravity float frac- tion of the different size ranges. Table 3 is a tabulation of these percentages and indicates that the average percentages of sulfur and ash are slightly lower in the finer size ranges. However, there are numerous exceptions to the averages with individual coals . The comparison of sulfur and ash in the 1 .60 specific gravity float frac- tions as shown in table 3 (page 8) is slightly biased because of the tendency for a lower percentage of recovery with the finer coals. As shown in table 4 (page 9), the average recovery at 1 .60 specific gravity was 75 .1 percent with the 14-mesh x 100-mesh size range and 84.1 percent with the 1 1/ 2-inch x size range. Another way to determine the effect of coal size on potential reduction of sulfur and ash is to compare the percentages of sulfur and ash in the different size ranges at a constant percentage of recovery. The comparison on this basis is shown in table 5 (page 10) for 80 percent float coal recovery. The averages of the chemical values shown for the three size ranges are nearly identical. A few of the individual samples do have significant differences. The comparisons shown in table 5 are also slightly biased because the chemical compositions of the raw coals of the three size ranges are not identical, as is shown in detail in the appendix. Table 6 shows that the average percentages of total sulfur and pyritic sulfur were slightly lower in the 14-mesh x 100-mesh samples of raw coal than in the 3/8-inch x 14-mesh and 1 1/2-inch x samples. The average percentages of ash in the 1 1/2-inch x 0, 3/8-inch x 14-mesh, and 14-mesh x 100-mesh raw coal samples were 18.8, 17.7, and 23.7, respectively. TABLE 6 - AVERAGE SULFUR AND ASH ANALYSES > OF THE 37 RAW COAL SAMPLES Size range Total sulfur (%) Pyritic sulfur (%) Ash (%) \\ inch x 3/8 inch x 14 mesh 14 mesh x 100 mesh 4.11 4.16 3.86 2.37 18.8 2.40 17.7 2.21 23.7 Although the comparisons based upon constant separation gravity (table 3) and constant recovery (table 5) are slightly biased, both indicate that crushing the coals to less than 1 1/2-inch top size did not exert a major influence on pos- sible reductions of sulfur or ash with the coals tested. (text continued on page 16) 12 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 6.0 5.0 4.0 j- 3.0 2.0 1.0- Sam ple 1 Total sulfur ^ 9- Pyritic sulfur-^ ~9 r J I 5.0 4.0 - 2 3.0 2.0 I.O 5.0 c a> o 3.0 -5 2.0 I.O Sample 14 J Total sulfur-^ ^j*^ — • — •■ Pyritic sulfur-^ ^jf i i i ,_L._ i i i i i i - . Sample 32 J Total sulfur-^ — -• Pyritic sulfur^ — ■ • '^ • 9 i i i i i i i i — i 1 40 50 60 70 80 90 100 Recovery, percent Fig. 2 - Examples of appreciable sulfur reductions with small amounts of reject SULFUR REDUCTION OF ILLINOIS COALS 13 3.U Sample 2 4.0 Total sulfur-^ ^ *^ S 3.0 o Q. = 2.0 y/ 3 CO %^^ 1.0 Pyritic s\i\Ut(^k^~~~+'~^''^ r\ i i i i i ,i . i . — i, _ j 5.0 4.0 3.0 2.0 .0 - 5.0 4.0 Sam ple 2± J I L J l_ co 2.0- 1.0- Samp/e 37 Total sulfur J L 10 20 30 40 50 60 70 80 90 100 Recovery, percent Fig. 3 - Examples of minor sulfur reductions with small amounts of reject 14 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 7 - SULFUR REDUCTIONS WITH 80 AND 40 PERCENT RECOVERIES* Sample Raw coal 80 percent recovery 40 percent recovery Total sulfur Pyrltlc sulfur (7.) Total sulfur Reduc- tion- (7.) Pyrltlc sulfur (7.) Reduc- tlontt (7.) Total sulfur (7.) Reduc- tlont a) Pyrltlc sulfur Reduc- tlontt (X) 1 6.19 4.46 2.88 53.5 1.25 72.1 2.17 65.0 0.85 80.9 2 4.69 2.43 3.91 16.6 1.28 47.5 3.27 30.2 0.61 75.0 3 3.71 2.25 2.40 35.3 0.89 60.4 2.03 45.4 0.60 73.3 4 1.18 0.53 0.94 20.2 0.40 24.5 0.79 32.6 0.28 47.3 5 5.18 3.35 3.04 41.4 1.25 62.6 2.25 56.5 0.42 87.6 6 4.76 2.86 2.95 38.1 1.52 46.8 2.08 56.2 1.08 62.4 7 4.07 2.16 3.03 25.6 0.88. 59.2 2.39 41.3 0.31 85.5 8 3.94 1.47 3.16 19.8 1.00 31.7 2.51 36.3 0.38 74.3 9 4.36 2.91 2.96 32.0 1.27 56.3 2.15 50.7 0.39 86.6 10 4.28 2.71 2.57 40.0 0.80 70.6 2.28 46.7 0.42 84.6 11 1.37 0.59 0.88 35.4 0.51 14.0 0.84 38.8 0.39 34.0 12 1.74 1.15 1.52 12.4 0.74 35.4 1.25 28.2 0.49 57.0 13 2.61 1.76 2.48 5.1 1.58 10.1 1.50 42.4 0.83 52.8 14 5.32 2.87 3.36 36.8 0.88 69.3 3.02 43.2 0.56 80.4 15 4.98 2.73 3.27 34.3 0.99 63.7 2.51 49.7 0.38 86.2 16 5.38 2.55 4.23 21.4 0.93 63.6 3.97 26.2 0.49 80.8 17 5.92 3.34 3.65 38.4 1.60 52.0 2.78 53.0 0.64 80.8 18 4.91 2.25 3.81 22.4 1.06 52.7 3.35 31.7 0.51 77.4 19 5.08 2.80 3.49 31.3 1.41 49.7 3.07 39.6 0.87 69.0 20 4.78 2.94 2.79 41.6 1.06 64.0 2.53 47.0 0.25 91.5 21 4.49 2.99 3.50t 22.0 1.82 39.2 2.63 41.4 0.82 72.7 22 4.48 2.45 3.03 32.3 1.12 54.1 2.30 48.6 0.44 82.0 23 4.78 2.66 2.93 38.7 0.91 65.8 2.68 43.9 0.51 80.7 24 5.36 2.89 3.40 36.6 1.12 61.1 2.80 47.7 0.34 88.3 25 4.48 2.76 3.08 31.2 1.08 61.0 2.53 43.5 0.51 81.5 26 4.87 2.22 3.96 18.6 1.19 46.6 3.04 37.5 0.40 82.0 27 4.52 2.39 3.33 26.3 0.97 59.3 2.97 34.4 0.58 75.6 28 2.79 1.70 1.94 30.4 1.15 32.1 1.44 48.2 0.72 57.6 29 1.43 0.68 1.20* 16.4 0.48* 29.4 0.85 40.3 0.25 63.2 30 4.13 2.28 2.96 28.3 0.87 61.8 2.60 37.0 0.58 74.6 31 1.37 0.80 1.03 24.6 0.40 50.0 0.98 28.8 0.29 63.2 32 5.04 2.82 3.16 37.3 0.61 78.4 3.03 39.9 0.32 88.7 33 1.71 1.20 1.45 15.4 0.58 51.6 1.21 29.4 0.26 78.2 34 3.38 2.27 2.56 24.3 1.29 43.1 2.08 38.4 0.52 77.1 35 4.38 2.60 3.32 24.2 1.48 43.2 2.38 45.6 0.43 83.4 36 5.08 3.30 3.15 38.0 1.65 49.9 2.51 50.5 0.88 73.2 37 5.33 3.39 4.26 20.0 2.29 32.5 3.46 35.1 1.44 57.4 AVERAGE 4.11 2.37 2.85 in raw coal, r in raw coal 28.8 1.08 50.4 2.33 41.9 0.54 74.2 *Dat« art .[Percent '{Percent for llj-ln. x reduction from reduction from faln.H from nl D size range, total sulfur pyrltlc sulfi -irred dam SULFUR REDUCTION OF ILLINOIS COALS 15 TABLE 8 - PERCENTAGES OF TOTAL SULFUR, PYRITIC SULFUR, AND ASH WITH 40, 60, AND 80 PERCENT RECOVERIES, 1%-INCH X SIZE, DRY BASIS 40 percent recovery 60 percent recovery 80 percent recovery Sample Sulfur (7.) Ash (%) Sample Sulfur (%) Ash (%) Sample Sulfur (%) Ash (%) Total Pyritic Total Pyritic Total Pyritic 4 0.79 0.28 3.2 11 0.8* 0.39 4.3 29 0.85 0.25 3.8 31 0.98 0.29 4.2 33 1.21 0.26 4.6 12 1.25 0.49 4.1 28 1.44 0.72 4.2 13 1.50 0.83 3.6 3 2.03 0.60 4.8 34 2.08 0.52 6.9 6 2.08 1.08 4.1 9 2.15 0.39 6.5 1 2.17 0.85 4.0 5 2.25 0.42 5.5 10 2.28 0.42 3.6 22 2.30 0.44 3.0 35 2.38 0.43 5.2 7 2.39 0.31 7.1 15 2.51 0.38 6.5 8 2.51 0.38 7.9 36 2.51 0.88 8.1 20 2.53 0.25 4.1 25 2.53 0.51 4.4 30 2.60 0.58 4.2 21 2.63 0.82 4.6 23 2.68 0.51 4.6 17 2.76 0.64 3.2 24 2.80 0.34 5.7 27 2.97 0.58 6.3 14 3.02 0.56 4.9 32 3.03 0.32 4.3 26 3.04 0.40 5.2 19 3.07 0.87 5.3 2 3.27 0.61 5.5 18 3.35 0.51 5.1 37 3.46 1.44 6.5 16 3.97 0.49 5.0 *Value obtained from pi jtted da 11 0.81 0.44 5.4 4 0.83 0.32 4.3 31 1.01 0.33 5.0 29 1.05 0.42 5.5 33 1.29 0.34 6.1 12 1.38 0.61 5.7 28 1.63 0.92 5.4 13 1.90 1.11 5.0 3 2.12 0.68 5.6 34 2.28 0.80 8.2 1 2.34 0.89 4.3 10 2.39 0.56 4.7 9 2.41 0.71 8.5 6 2.43 1.30 5.4 5 2.50 0.69 7.2 22 2.56 0.67 3.8 7 2.61 0.51 8.2 20 2.69 0.54 6.9 35 2.72 0.79 6.3 25 2.74 0.69 6.1 8 2.76 0.60 9.7 30 2.76 0.68 5.6 36 2.77 1.18 9.5 23 2.78 0.67 6.3 15 2.80 0.62 8.3 24 2.99 0.65 7.1 21 3.05 1.12 6.9 32 3.07 0.41 5.8 17 3.08 0.96 4.0 27 3.11 0.70 7.8 14 3.14 0.60 5.9 19 3.22 0.95 6.3 26 3.36 0.69 6.4 2 3.49 0.81 6.9 18 3.53 0.73 6.8 37 3.82 1.80 7.9 16 4.08 0.64 6.4 11 0.88 0.51 7.3 4 0.94 0.40 6.0 31 1.03 0.40 6.5 29 1.20* 0.48* 8.7 33 1.45 0.58 8.9 12 1.52 0.74 8.1 28 1.94 1.15 6.8 3 2.40 0.89 7.3 13 2.48 1.58 7.4 34 2.56 1.29 9.5 10 2.57 0.80 6.8 20 2.79 1.06 11.3 1 2.88 1.25 5.4 23 2.93 0.91 8.8 6 2.95 1.52 7.5 30 2.96 0.87 7.9 9 2.96 1.27 11.1 7 3.03 0.88 10.0 22 3.03 1.12 5.9 5 3.04 1.25 9.5 25 3.08 1.08 8.3 36 3.15 1.65 11.6 8 3.16 1.00 11.5 32 3.16 0.61 7.7 15 3.27 0.99 10.8 35 3.32 1.48 8.0 27 3.33 0.97 9.8 14 3.36 0.88 7.5 24 3.40 1.12 8.6 19 3.49 1.41 8.8 21 3.50* 1.82 11.9 17 3.65 1.60 5.6 18 3.81 1.06 8.7 2 3.91 1.28 9.2 26 3.96 1.19 7.9 16 4.23 0.93 8.3 37 4.26 2.29 9.8 16 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 EFFECT OF RECOVERY ON SULFUR CONTENT The coals studied varied considerably in their washability characteristics. The sulfur percentages in some samples were reduced materially with only a minor percentage of reject (fig. 2), but an appreciable reduction in sulfur with some others required the rejection of major percentages of heavy material (fig. 3) . Table 7 shows the variations in washability characteristics for the 1 1/2- inch x samples as calculated by the IBM 360-75 computer from the data given in the appendix. The reduction in total sulfur with 80 percent coal recovery varied from 53.5 percent to 5.1 percent; the average was 28.8 percent. With 40 percent recovery, the reduction in total sulfur ranged from 65.0 percent to 26.2 percent and averaged 41 .9 percent. The reductions in pyritic sulfur with 80 per- cent float coal recovery varied from 78.4 percent to 10.1 percent; the average was 50.4 percent. In the raw coal the average pyritic sulfur content was 57.7 percent of the total sulfur. The data given in table 7 (page 14) support the common statement that about half of the sulfur in the Illinois coals is in the pyritic form and that about half of this can be readily removed with a resulting reduction of about 25 percent in total sulfur. However, the data also indicate many exceptions to this general rule. One of the basic aims of this study was to learn whether Illinois coals might meet certain sulfur limits and still yield reasonable recoveries. Although the limits of the sulfur content of coals being burned may be regulated by law, a reasonable recovery limit will vary from mine to mine and from day to day at a given mine. Because of the variability of "reasonable" recoveries, table 8 (page 15) lists the percentages of total sulfur (in ascending order), pyritic sulfur, and ash for the 37 samples of 1 1/2-inch x size fraction with 40, 60, and 80 percent recoveries. The chemical values for other recovery percentages can be obtained by interpolation. Tabulations similar to those for the 1 1/2- inch x fraction were made for the 3/8-inch x 14-mesh and 14-mesh x 100-mesh size fractions but are not shown in this report. Table 9 provides a summary of the data given in table 8 and in the similar tabulations for the other size ranges studied. TABLE 9 - NUMBER OF SAMPLES MEETING SPECIFIED SULFUR LIMITS (FROM A TOTAL OF 37 SAMPLES) Number of samples meeting specified sulfur maximum 80% recovery 40% recovery 1.5% 2.0% 2.5% 1.5% 2.0% 2.5% \\ inch x 3/8 inch x 14 mesh 14 mesh x 100 mesh 5 7 9 8 8 6 7 10 8 8 6 7 11 8 10 18 20 24 The production from the mines sampled varied from a few thousand tons to several million tons of coal per year. Therefore the proportion of mines producing coal within certain sulfur limits does not indicate that the same proportion of pro- duction is within the limits. Likewise, the number of mines should not be con- sidered proportionate to the reserves available in a given sulfur category. SULFUR REDUCTION OF ILLINOIS COALS 17 UTILIZATION OF WASTE MATERIAL The reject from some coal preparation plants might be used as a raw material for the production of sulfur or sulfuric acid . A high percentage of sulfur and a low percentage of carbon are the requisites for such use. No carbon anal- yses were made on the sink material (reject) in this investigation, but the per- centage of combustibles other than sulfur might be a reasonable indicator of carbon content. Table 10 lists the percentages of carbonaceous combustible (total com- bustible material minus sulfur) and some other pertinent analytical data for the material that sank in the 1 .60 specific gravity solution. The values given in table 10 were not determined directly but were cal- culated from the analyses made on the float fraction and on the raw coal samples. Therefore the errors resulting from imperfect sampling and analyses of the float coal fraction may be increased by the arithmetic calculations made to get sink coal (reject) analyses. Five of the 37 samples had more than 20 percent sulfur in the 1 .60 sink fraction, as is shown in table 10. The percentage of carbonaceous combustible for these five samples varied from 3.1 to 12.2, a range that indicates relatively low carbon contents and suggests that the mines from which these samples were obtained are potential sources of raw material for the production of sulfur or sul- furic acid. CHANNEL SAMPLES The composite channel samples (table 11) are considered fairly representa- tive of coals that have received a minimum of preparation at the mines, because mineral bands 3/8 inch or more in thickness were excluded from the channel samples. Thus any ash in the raw coal going to the preparation plant in excess of that ash shown in the channel sample analysis can usually be removed with little loss of "coal." Therefore the percentages of ash in the channel samples provide reasonable bases for calculating recovery percentages and were used in the compilation of table 12. Sample 1 will be used to illustrate the method of calculation used for table 12 . The ash in the sample of raw coal obtained from the tipple was 15.0 percent and the ash in the channel sample was 10.1 percent. The computer was pro- grammed to determine the percentage of recovery that would provide a coal with 10.1 percent ash; this was found to be 91.9. Thus a 91.9 percent recov- ery on the raw coal basis becomes 100 percent recovery on the channel sample basis for sample 1 . A 50 percent recovery on the channel sample basis is 50 times 0.919, or approximately 46 percent recovery on the raw coal basis. The computer was also programmed to give the percentage of total sulfur on both moist and dry bases for 50, 70, and 90 percent recoveries on the channel sample basis for the 37 coals, as shown in table 12. The 50, 70, and 90 percent recoveries on the channel sample basis were used because they were considered more nearly equat- able to the 40, 60, and 80 percent used on the raw coal basis in other tables. No special procedures were used to obtain moisture values that would be representative of the coals in the seam. In most cases the moisture percentages of the samples are slightly lower than those of the coals in the seams. The moisture value of 4.6 percent for sample 8 is considerably less than normal bed 18 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 10 - PERCENTAGES OF ASH, TOTAL SULFUR, PYRITIC SULFUR, AND CARBONACEOUS COMBUSTIBLE IN 1.60 SPECIFIC GRAVITY SINK FRACTIONS* Sample Sink (%) Ash (7.) Total sulfur (%) Pyritic sulfur (7.) Carbonaceous combustible (7.) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 14.7 18.7 14.7 9.7 12.8 23.2 15.8 12.4 22.1 16.6 14.6 21.8 19.4 9.7 17.8 8.5 8.0 13.5 14.9 34.1 35.7 17.5 17.8 7.8 14.1 8.2 11.1 11.7 26.6 12.7 12.4 9.0 22.0 14.2 11. 16.7 18.0 66.6 69.9 60.6 73.4 56.6 72.5 77.7 59.5 63.7 58.3 89.5 83.8 68.7 70.6 55.6 91.3 71.2 59.9 43.7 89.8 54.1 80.3 71.2 65.8 78.6 88.3 72.5 52.7 82.9 77.6 64.8 75.1 62.8 45.5 54.0 63.4 24.12 7.95 10.33 1.55 17.65 10.55 8.60 7.54 9.44 12.57 4.00 7.46 3.03 21.33 12.05 15.39 25.70 10.93 13.42 8.66 6.67 10.94 13.14 23.45 12.22 9.24 12.93 7.54 1.79 11.69 3.56 23.04 2.60 7.49 9.80 14.06 9.70 22.27 7.13 9.33 1.00 15.41 7.23 8.24 3.02 8.83 11.60 0.88 2.51 1.80 17.67 10.03 15.47 15.30 8.59 9.43 7.21 6.20 8.39 10.51 16.96 11.47 9.05 12.08 4.34 0.71 11.42 3.41 22.74 3.61 6.68 8.02 10.83 7.85 9.2 22.1 29.1 25.1 25.8 16.9 13.7 33.0 26.8 29.1 6.5 13.8 28.2 8.1 32.3 -6.7 3.1 29.2 42.9 1.5 34.9 6.5 5.3 21.9 12.2 -1.2 20.0 45.5 5.4 18.9 12.2 22.3 29.7 44.7 31.9 26.9 *Data are for l^_ln. x size range. SULFUR REDUCTION OF ILLINOIS COALS 19 CHEMICAL ANALYSES OF CHANNEL SAMPLES* Sample Mois.^ (7.) V.M.* (%) F.C.t (70 Ash m (70 (70 n' (70 0* (70 Sulfur Chlorine Heating (Btu) Gieseler plasti- cityt Free swelling index SI.* (70 Pyr. 1 ' (70 Org.^ (70 Total (70 Total (%) W.S.+ (%) 1 11.2 43.5 46.4 10.1 4.86 72.33 1.43 6.41 0.05 3.38 1.42 4.85 0.03 0.0 13042 104 4.0 2 14.4 43.3 44.6 12.1 4.98 69.49 1.27 7.91 0.03 1.66 2.56 4.25 0.13 0.09 12465 27 4.0 3 8.5 38.2 51.8 10.0 5.13 74.49 1.48 6.18 0.02 1.44 1.33 2.78 0.28 0.12 12934 72 4.0 * 10.4 36.4 55.0 8.6 0.0 0.0 0.0 0.0 0.02 0.57 0.63 1.22 0.40 0.15 13162 10 5.5 5 7.0 39.4 48.5 12.1 5.15 71.18 1.02 6.58 0.02 2.34 1.65 4.01 0.31 0.09 12724 300 4.5 6 14.5 42.9 47.6 9.5 5.47 72.73 1.29 6.24 0.11 3.38 1.32 4.81 0.04 0.01 12951 305 5.5 7 15.6 43.0 44.0 13.0 4.99 68.68 1.07 8.72 0.01 1.42 2.02 3.47 0.03 0.03 12220 12 4.0 8 4.6 42.1 45.1 12.8 4.91 70.31 1.19 7.09 0.02 1.42 2.24 3.68 0.02 0.02 12485 37 3.5 9 4.1 36.9 50.9 12.2 5.06 71.94 1.70 5.19 0.14 2.13 1.63 3.90 0.13 0.0 12997 5100 8.5 10 5.0 40.5 49.2 10.3 5.22 73.53 1.68 6.17 0.08 1.58 1.50 3.16 0.09 0.01 13245 7.5 11 10.7 3B.2 52.7 9.1 5.31 73.42 1.62 9.16 0.01 0.65 0.77 1.43 0.35 0.17 13027 9 5.5 12 9.2 35.8 53.9 10.3 4.96 72.92 1.75 8.15 0.02 1.14 0.72 1.88 0.33 0.23 13008 9 4.0 13 13.9 41.0 51.0 8.0 5.34 73.24 1.37 8.97 0.04 2.27 0.85 3.16 0.02 0.02 13102 5 5.5 14 14.7 45.5 45.3 9.2 5.13 72.06 1.36 8.56 0.05 1.28 2.34 3.67 0.03 0.03 12996 84 3.5 15 14.7 41.7 43.5 14.8 5.01 67.18 1.43 7.55 0.07 1.96 2.03 4.06 0.14 0.11 11973 a 5.0 lb 14.6 44.4 45.5 10.1 5.12 68.97 1.39 11.08 0.07 1.37 1.89 3.33 0.08 0.08 12442 8 4.5 17 14.8 44.1 45.6 10.3 4.98 71.49 1.15 6.73 0.05 3.21 2.10 5.36 12952 62 3.5 18 15.0 41.0 47.7 11.3 5.15 69.74 1.12 7. 63 0.06 2.16 2.82 5.04 0.22 0.17 12480 9 3.5 19 14.7 40.3 48.1 11.6 4.85 69.25 1.10 8.90 0.04 2.02 2.19 4.25 0.10 0.04 12419 5 4.5 20 14.7 38. 1 46.6 15.3 4.88 66.24 1.04 8.54 0.07 2.13 1.78 3.99 0.02 0.01 11900 4 4.0 21 17.3 40.7 45.7 13.6 5.00 67.44 0.93 8.82 0.08 2.26 1.86 4.21 0.03 0.03 12074 4.5 22 12.9 44.5 44.5 11.0 5.43 71.70 1.18 5.96 0.04 2.72 2.07 4.82 0.03 0.02 12829 12800 5.0 23 9.3 40.5 47.1 12.4 4.72 69.23 1.54 7.64 0.06 2.36 2.03 4.45 0.01 0.01 12274 7 4.5 24 8.1 39.8 47.5 12.7 4.64 68.98 1.37 7.62 0.30 2.06 2.3? 4.68 0.02 12314 2 3.0 25 10.8 40.1 49.1 10.8 0.03 1.76 1.94 3.73 0.01 12547 13 4.0 26 8.7 40.2 47.1 12.7 5.10 68.88 1.35 7.08 0.12 2.56 2.26 4.95 0.01 12 390 30 4.0 27 10.0 40.? 46.7 13.1 4.72 68.04 1.46 8.84 0.08 1.60 2.13 3.81 0.01 0.01 12171 7 4.5 28 7.8 36.3 53.2 10.5 5.22 73.20 1.20 7.06 0.04 1.81 1.07 2.92 0.07 0.04 13137 83 6.0 29 7.9 34.3 55.4 10.3 5.16 74.00 1.52 7.05 0.02 0.74 0.58 1.34 0.02 0.02 13000 4.5 30 12.1 45.6 44.4 10.0 5.44 71.29 1.13 9.13 0.01 1.16 1.84 3.01 0.06 0.01 13075 5.0 31 16.5 40.0 47.8 12.2 4.63 7P.58 1.70 9.16 C.05 0.98 0.71 1.74 0.10 0.09 12438 10 4.5 32 10.8 42.1 45.5 12.4 5.01 68.09 1.43 8.71 0.03 1.69 2.59 4.31 0.07 0.05 12222 19 5.5 33 7.7 35.4 54.1 10.5 5.14 73.76 1.33 7.67 0.01 0.99 0.53 1.54 0.05 0.0 13005 11 5.0 34 5.2 37.2 51.3 11.5 5.11 71.86 1.34 7.10 0.02 2.04 1.11 3.17 0.06 0.01 12873 41 5.5 35 4.1 38.4 47.3 14.3 5.04 68.23 1.42 5.46 0.06 3.78 1.75 5.59 0.14 0.02 12387 1190 6.0 36 4.1 37.7 46.2 16.1 4.47 68.57 1.46 5.28 0.10 2.90 1.15 4.15 0.07 0.02 12331 2200 7.0 37 4.5 42.5 43.3 14.2 5.33 69.17 1.31 4.99 "ixed carbon; H - hydrogen; sticity - maximum fluidity 0.08 2.99 1.98 C - carbon; N - nitrogen; , dial divisions per minut 5.04 - oxygen 0.12 ; SI. - 0.04 sulfate; 12541 Pyr. - pyr itic; 7.5 ♦Values TMois. Org. - (except - moistur organic; moisture) are given on a dry basis e; V.M. - volatile matter; F.C. - U.S. - water soluble; Gieseler pli 20 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 12 - ESTIMATED TOTAL SULFUR CONTENT AT 50, 70, AND 90 PERCENT RECOVERIES ON CHANNEL SAMPLE BASES Sampler- Raw coal Channel coal Estimated recovery* - (%) Total sulfur Ash (%) Ash (%) Mois- ture (7.) 50 percent recovery 70 percent recovery 90 percent recovery Dry basis (%) Moist basis (%) Dry basis (%) Moist basis Dry basis (X) Moist basis (X) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 15.0 20.8 15.9 13.8 16.4 22.2 21.2 18.5 22.5 16.1 19.9 24.6 19.7 14.7 19.6 17.0 12.6 16.3 15.1 36.1 4 0.9 15.0 21.7 14.5 17.1 14.8 19. A 15.1 19.9 18.3 16.1 14.2 23.0 17.5 13.1 19.1 19.7 10.1 12.1 10. 8.6 12.1 9.5 13.0 12.8 12.2 10.3 9.1 10.3 8.0 9.2 14.8 10.1 10.3 11.3 11.6 15.3 13.6 11.0 12.4 12.7 10.8 12.7 13.1 10.5 10.3 10.0 12.2 12.4 10.5 11.5 14.3 16.1 14.2 11.2 14.4 8.5 10.4 7.0 14.5 15.6 A. 6 4.1 5.0 10.7 9.2 13.9 14.7 14.7 14.6 14.8 15.0 14.7 14.7 17.3 12.9 9.3 8.1 10.8 8.7 10.0 7.8 7.9 12.1 16.5 10.8 7.7 5.2 4.1 4.1 4.5 91.9 85.6 88.7 92.1 90.7 80.6 87.8 87.8 80.5 88.5 86.7 81.1 80.8 91.1 89.0 91.5 96.4 90.1 89.6 74.5 70.7 91.6 87.0 97.1 88.9 97.0 91.9 92.9 78.5 88.8 94.4 96.8 81.3 88.6 100.0 92.8 89.7 2.18 1.94 2.43 2.16 2.98 2.64 3.29 2.82 3.49 2.99 3.84 3.28 2.03 1.86 2.14 1.96 2.40 2.19 0.80 0.72 0.85 0.76 0.96 0.86 2.29 2.13 2.57 2.39 3.09 2.88 2.09 1.79 2.35 2.01 2.73 2.34 2.41 2.04 2.63 2.22 3.00 2.53 2.55 2.43 2.79 2.66 3.14 2.99 2.15 2.06 2.34 2.25 2.72 2.61 2.30 2.18 2.41 2.29 2.57 2.44 0.81 0.72 0.81 0.72 0.87 0.78 1.25 1.14 1.36 1.23 1.47 1.33 1.51 1.30 1.81 1.56 2.24 1.93 3.05 2.60 3.18 2.71 3.39 2.89 2.56 2.18 2.85 2.43 3.28 2.79 4.00 3.41 4.10 3.51 4.25 3.63 2.87 2.45 3.26 2.78 3.90 3.32 3.39 2.88 3.57 3.03 3.83 3.25 3.09 2.64 3.25 2.77 3.50 2.99 2.50 2.14 2.64 2.25 2.73 2.33 2.61 2.16 2.76 2.29 3.18 2.63 2.36 2.05 2.64 2.30 3.10 2.70 2.70 2.45 2.79 2.53 2.92 2.65 2.86 2.63 3.13 2.87 3.60 3.31 2.57 2.29 2.77 2.47 3.08 2.75 3.14 2.87 3.57 3.26 4.25 3.88 3.00 2.70 3.15 2.83 3.37 3.03 1.49 1.38 1.70 1.57 2.01 1.85 0.85 0.78 0.98 0.91 1.22 1.12 2.64 2.32 2.78 2.45 2.96 2.60 0.99 0.82 1.02 0.85 1.04 0.87 3.04 2.71 3.10 2.77 3.20 2.86 1.21 1.12 1.27 1.18 1.39 1.28 2.12 2.01 2.31 2.19 2.55 2.42 2.52 2.41 2.98 2.86 3.72 3.57 2.58 2.47 2.85 2.73 3.23 3.10 3.54 3.38 3.88 3.70 4.28 4.09 Data are for l^-ln. x size range. 2 Estimated percentage recovery that would give the Indicated ash percentage in channel coal. SULFUR REDUCTION OF ILLINOIS COALS 21 moisture value. Apparently this sample underwent some air-drying before being submitted to the analytical laboratory. The percentage of ash in channel sample 35 was greater than that in the raw sample from the same mine, which is additional evidence of sampling vari- ability. For this case the computer was programmed to use 100 percent recovery on the channel sample basis. For the coals included in this report, the recover- ies on the channel sample basis varied from this 100 percent to 70.7 percent. Effect of Moisture on Sulfur Values The importance of the influence of moisture in coals upon the sulfur per- centages should be recognized. A 1 .5 percent limit on sulfur on the "moist basis" with a 20 percent moisture coal is equivalent to a 1 .875 percent sulfur limit on the "dry basis." A tabulation of total sulfur (in ascending order), pyritic sulfur, and ash on the moist basis is shown in table 13. This table may be compared with table 8 to find the relationship between the moist and dry bases for the coals studied. The moisture values used were those found for the channel samples. ASH FUSION Concern has been expressed about the possibility that a reduction in sulfur in a coal may be accompanied by a change in behavior of the ash in the combustion chamber. As a measure of this change, albeit a poor one, the ash fusion temperatures were determined for the lightest, the intermediate, and the heaviest (1 .60 specific gravity) float fractions. These data are given in table 14. The algebraic differences in fusion temperatures between the three gravity fractions also are shown. Although the differences in temperatures with individ- ual coals may be significant, no trend was clearly indicated. HARDGROVE GRINDABILITY The Hardgrove grindability values were obtained for the lightest, inter- mediate, and heaviest (1 .60 specific gravity) float fractions of most of the 1 1/2- inch x coal samples. Table 15 is a tabulation of these data. The differences between the grindabilities for the various gravity fractions also are shown and indicate no major trend. CONCLUSIONS The Illinois coals studied for this report indicate that only a few could be prepared with a sulfur content of 1 .5 percent or less. These few coals had 2 per- cent or less of sulfur in the raw coal samples. Approximately 50 percent of the sulfur in the average Illinois coal is in pyritic form, and about half of this pyritic sulfur can be removed with a reason- able amount of reject. This is equivalent to a reduction of one- fourth of the 22 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 13 - PERCENTAGES OF TOTAL SULFUR, PYRITIC SULFUR, AND ASH WITH 60, AND 80 PERCENT RECOVERIES, 1^-INCH X SIZE, MOIST BASIS +0, 40 percent recovery 60 percent recovery 80 percent recovery Sample Sulfur (%) Ash (%) Sample Sulfur (7.) Ash (7.) Sample Sulfu r (%) Ash (7.) Total 1 Pyritic Total 1 Pyritic Total 1 Pyritic 4 0.71 0.25 2.8 11 0.72 0.39 4.8 11 0.79 0.45 6.5 11 0.75 0.35 3.8 4 0.75 0.29 3.8 4 0.84 0.36 5.4 29 0.79 0.23 3.5 31 0.84 0.28 4.2 31 0.86 0.33 5.4 31 0.81 0.25 3.5 29 0.97 0.39 5.1 29 1 . 1 1* 0.44* 8.0 33 1.11 0.24 4.2 33 1.19 0.31 5.6 33 1.34 0.54 8.2 12 1. 14 0.45 3.7 12 1.25 0.56 5.2 12 1.38 0.67 7.3 13 1.30 0.72 3.1 28 1.51 0.85 5.0 28 1.79 1.06 6.3 28 1.33 0.66 3.9 13 1.63 0.96 4.3 13 2.13 1.36 6.4 6 1.78 0.92 3.5 3 1.94 0.62 5.1 3 2.2C 0.81 6.6 3 1.85 0.55 4.4 6 2.08 1.11 4.6 20 2.38 0.90 9.6 1 1.92 0.76 3.5 1 2.C8 0.79 3.8 34 2.43 1.22 9.0 34 1.97 0.49 6.5 34 2.16 0.76 7.8 10 2.44 0. 76 6.5 22 2.00 0.38 2.6 7 2.20 0.43 6.9 6 2.52 1.30 6.4 7 2.02 0.26 6.0 22 2.23 0.58 3.3 1 2.55 l.l 1 4.8 9 2.06 0.37 6.3 10 2.27 0.53 4.5 7 2.55 0.74 8.4 5 2.1C 0.39 5.1 20 2.30 0.46 5.9 30 2.6C 0.77 6.9 15 2.14 0.32 5.5 9 2.31 0.68 8.2 22 2.64 0.98 5.2 20 2.16 0.21 3.5 5 2.32 0.64 6.7 23 2.66 0.82 8.0 10 2.17 0.40 3.4 15 2.39 0.53 7.1 25 2.75 0.96 7.4 21 2.18 0.67 3.8 30 2.43 0.60 4.9 15 2.79 0.85 9.3 25 2.26 0.46 3.9 25 2.44 0.62 5.4 32 2.82 0.54 6.9 35 2.29 0.41 4.9 21 2.52 0.92 5.7 5 2.82 1.17 8.8 30 2.29 0.51 3.7 23 2.53 0.61 5.7 9 2.84 1.22 10.7 17 2.37 0.55 2.7 35 2.61 0.75 6.0 14 2.87 0.75 6.4 8 2.4C 0.36 7.6 17 2.62 0.82 3.4 21 2.89* 1.50 9.9 36 2.41 0.85 7.7 8 2.64 0.57 9.2 19 2.98 1.20 7.5 23 2.43 0.47 4.2 36 2.65 1.13 9.1 27 3.00 0.87 8.8 24 2.58 0.31 5.2 14 2.68 0.51 5.0 8 3.02 0.96 11. 14 2.58 0.48 4.2 32 2.74 0.36 5.2 36 3.02 1.59 11.2 19 2.62 0.74 4.5 19 2.75 0.81 5.4 17 3.11 1.36 4.8 27 2.67 0.53 5.7 24 2.75 0.60 6.5 24 3.12 1.03 7.9 32 2.7C 0.28 3.8 27 2.80 0.63 7.0 35 3.18 1.42 7.7 26 2.78 0.36 4.7 2 2.99 0.69 5.9 18 3.24 0.90 7.4 2 2.80 0.52 4.7 18 3.00 0.62 5.8 2 3.35 1.09 7.9 18 2.85 0.43 4.4 26 3.07 0.63 5.9 16 3.61 0.79 7.0 37 3.30 1.38 6.2 16 3.48 0.55 5.4 26 3.62 1.08 7.3 16 3.39 0.42 4.3 37 3.65 1.72 7.6 37 4.07 2.19 9.3 *Value obt alned from plotted data. SULFUR REDUCTION OF ILLINOIS COALS 23 FUSIBILITY OF COAL ASH IN REDUCING ATMOSPHERE Initial deformation temperature (*F) Softening temperature (*F) Hemispherical temperature (°F) Fluid temperature (*F) Samj pie 1 LGF 2 IGF HGF IGF- LGF HGF- LGF HGF- IGF LGF IGF HGF IGF- LGF HGF- LGF HGF- IGF LGF IGF HGF IGF- LGF HGF- LGF HGF- IGF LGF IGF HGF IGF- LGF HGF- LGF HGF- IGF 1 1920 1920 1915 -5 -5 2070 2050 2060 -20 -10 10 2 1850 ISCO 1950 -50 100 150 2035 2040 2050 5 15 10 3 191C 198C 1970 70 60 -10 2130 2170 2150 40 20 -20 4 1915 2060 2210 145 295 150 2200 2400 2580 200 380 180 5 1890 191C 1900 20 10 -10 2150 2160 2080 10 -70 -80 6 1820 194C 1930 120 no -10 2035 2050 2080 15 45 30 7 2020 202C 1970 -50 -50 2730 2230 2090 -140 -140 8 1950 2030 1960 80 10 -70 2290 2240 2100 -50 -190 -140 9 2000 201C 1970 10 -30 -40 2150 216C 2100 10 -50 -60 10 1980 197C 1990 -10 10 20 2100 2100 2150 50 50 12 192C 191C 2000 -10 80 90 2070 2100 2130 30 60 30 13 1915 1850 1900 -65 -15 50 2045 2035 2140 -10 95 105 14 1845 1 8 ec 1990 35 145 110 2130 2190 2170 60 40 -20 15 1960 1940 1880 -20 -80 -60 2040 2050 1960 10 -80 -90 16 1965 1990 1950 25 -15 -40 2090 2160 2180 70 90 20 17 1900 1965 1930 65 30 -35 2080 2105 2025 25 -55 -80 19 2000 20CC 2030 30 30 2080 2100 2100 20 20 20 1900 1975 1950 75 50 -25 2060 2160 2100 100 40 -60 21 1910 1930 1900 20 -10 -30 2090 2100 2130 10 40 30 22 1910 1950 1910 40 -40 2100 2110 2110 10 10 23 204C 2030 2000 -10 -40 -30 2240 2250 2230 10 -10 -20 24 2060 2050 1980 -10 -80 -70 2480 2370 2265 -110 -215 -105 25 1960 195C 1980 -10 20 30 2155 2175 2200 20 45 25 2b 1950 1960 1960 10 10 2210 2220 2150 10 -60 -70 27 2050 203C 2060 -20 10 30 2250 2230 2235 -20 -15 5 29 185C 2320 1850 470 -470 2500 2520 2310 20 -190 -210 30 1825 1965 1980 140 155 15 2110 2110 2135 25 25 31 217C 22CC 2210 30 40 10 2260 2330 2350 70 90 20 32 191C 1950 1950 40 40 2150 2170 2225 20 75 55 33 195G 1980 1965 30 15 -15 2050 1060 2060 10 10 34 1915 1900 1975 -15 60 75 2135 2150 2110 15 -25 -40 35 1940 1950 1940 10 -10 2205 2180 2110 -25 -95 -70 36 2000 1910 1880 -90 -120 -30 2130 2020 2060 -110 -70 40 37 1900 1920 1930 20 30 10 2120 2080 2090 -40 -30 10 AVERAGE DIFFERENCE 31 23 -8 II -4 -15 2090 2070 2080 2055 2060 2070 2140 2185 2160 2200 2430 2600 2170 2170 2100 2055 2070 2100 2260 2260 2115 2320 2260 2130 2200 2200 2150 2140 2130 2250 2100 2125 2160 2065 2065 2170 2150 2210 2190 2130 2125 2000 2120 2180 2200 2100 2135 2040 2100 2120 2120 2140 2170 2230 2110 2120 2150 2120 2130 2130 2270 2280 2260 2500 2405 2280 2185 2200 2230 2240 2250 2170 2270 2255 2250 2530 2540 2340 2120 2130 2150 2275 7360 2370 2170 2200 2225 2120 2140 2130 2155 2180 2140 2220 2200 2130 2150 2070 2080 2150 2100 2110 -20 -10 5 15 45 20 230 400 -70 15 45 -145 -60 -190 -50 -10 110 25 60 105 60 40 -5 -130 60 80 -60 10 -10 -95 -220 15 45 10 -70 -15 -20 10 -190 10 30 85 95 30 55 20 10 25 -15 -20 -90 -80 -70 -50 -40 11 -3 10 2170 10 7260 -75 23 80 170 2660 -70 2485 30 2405 -145 2560 -130 2620 -50 2320 120 2750 35 2180 105 2450 -20 2210 -125 2300 20 2230 -95 2160 2200 60 2300 30 2180 2350 -20 2370 -125 2620 30 2410 -80 2400 -5 2410 -200 2680 20 2235 10 2350 25 2380 -10 2750 -40 2410 -70 2300 10 2370 10 2280 2180 2150 2230 2210 2430 2360 2690 2720 2430 2280 2385 2360 2570 2260 2600 2350 2350 2310 2200 2420 2230 2250 2420 2480 2350 2300 2400 2100 2300 2350 2180 2100 2200 2220 2330 2310 2480 7250 2500 2380 2410 2450 2610 2480 2430 2370 2430 2300 2330 2320 2650 2600 2270. 2400 2410 2440 2360 2520 2300 2250 2425 2360 2300 2230 2160 2180 2260 2260 30 60 -55 -205 -20 -45 10 -300 -20 -270 30 -10 -50 170 50 70 -30 30 140 90 100 -700 70 120 20 -60 20 30 300 150 40 -10 -140 20 -40 30 -100 -80 -90 -30 -80 35 165 60 90 -20 140 50 15 -50 -70 •160 -140 -20 -20 19 -21 -30 -20 -70 30 -150 -25 -310 -250 -40 220 20 60 -50 -300 50 -80 20 -20 -230 -120 40 -130 -60 -130 -10 -50 130 30 160 -50 -65 -70 20 -40 2 Data are for 1^-ln. x size range. LGF - lowest gravity float fraction (varied varied from 1.26 to 1.355 specific gravity): from 1.23 to 1.31 specific gravity); IGF - intermediate gravity float fraction HGF - highest gravity float fraction (1.60 specific gravity). 24 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 462 TABLE 15 - HARDGROVE GRINDABILITY Sample 1 LGF 2 3 4 HGF LGF-IGF LGF-HGF IGF-HGF 1 55 56 52 -1 3 4 2 68 70 69 -2 -I 1 3 70 66 69 4 1 -3 4 59 55 55 4 4 5 67 65 67 2 -2 6 62 63 56 -1 6 7 7 56 54 55 2 I -I 8 70 74 68 -4 2 6 9 73 64 69 9 4 -5 10 71 72 65 -1 6 7 12 58 59 58 -1 I 13 52 45 48 7 4 -3 14 54 64 53 -10 I 11 15 70 66 65 4 5 I 16 59 57 62 2 -3 -5 17 55 57 57 -2 -2 19 72 75 67 -3 5 8 20 67 61 62 6 5 -1 21 61 58 66 3 -5 -8 22 63 58 55 5 8 3 23 61 57 55 4 6 2 24 67 60 62 7 5 -2 25 64 68 66 -4 -2 2 26 56 54 58 2 -2 -4 27 59 56 57 3 2 -I 29 74 65 70 9 4 -5 30 55 61 61 -6 -6 31 56 51 58 5 -2 -7 32 56 56 53 3 3 33 62 62 61 I 1 34 67 69 68 -2 -1 1 35 64 63 61 I 3 2 36 52 56 60 -4 -8 -4 37 58 55 62 3 -4 -7 AVERAGE DIFFERENCE 1.2 1.3 0.1 „Data are for 1^-in. x size range. LGF - lowest gravity float fraction (varied from 1.23 to 1.31 specific gravity); IGF - intermediate gravity float fraction varied from 1.26 to 1.355 specific gravity); HGF - highest gravity float fraction (1.60 specific gravity) SULFUR REDUCTION OF ILLINOIS COALS 25 total sulfur content . However, the reduction in pyritic sulfur with the individual samples varied widely — from a few percent to more than 75 percent. The float coal fractions (clean coal) usually had less sulfur when the coal was crushed to finer sizes. However, in most of the coals tested, the differences were not great enough to make fine grinding a practical procedure for sulfur reduc- tion. The sulfur in the 1 .60 specific gravity sink fraction (refuse) indicated that several samples had sulfur contents in excess of 20 percent. These high sul- fur products might be suitable for processing as a source of sulfur or sulfuric acid. REFERENCES American Society for Testing and Materials, 1968, 1968 book of ASTM standards with related material, Part 19 — Gaseous fuels; coal and coke: ASTM, Philadelphia, p. 46 and 439. Holmes, J. A., 1911, The sampling of coal in the mine: U. S. Bureau of Mines Technical Paper No. 1, 18 p. LIST OF ABBREVIATIONS USED IN APPENDIX SP. GRAV. = Specific gravity CUM. WT. = Cumulative weight TOT. S = Total sulfur PYR. S = Pyritic sulfur ORG. S = Organic sulfur APPENDIX - FLOAT-AND-SINK DATA FOR SAMPLES SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.230 26.7 4.2 2.23 1.00 1.03 73.3 18.9 7.63 5.72 1.62 1.245 44.6 4.0 2.24 0.83 1.16 55.4 23.9 9.37 7.38 1.70 1.260 51.8 4.1 2.18 0.84 1.09 48.2 26.7 10.50 8.35 1.86 1.400 30.8 5.1 2.88 1.27 1.20 19.2 56.7 20.12 17.88 2.55 1.600 85.3 6. 1 3.10 1.39 1.24 14.7 66.6 24.12 22.27 2.74 iL. RAW COAL 100.0 15.0 6.19 4.46 1.46 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S org.: 1.230 4.1 3.7 1 .99 0.79 1.05 95.9 16.1 5.84 4.55 0.97 1.245 20.3 3.5 2.04 0.78 1.10 79.7 18.6 6.61 5.31 0.94 1.260 33.6 3.5 2.07 0.83 1.08 66.4 21.6 7.51 6.20 0.92 1.400 80.8 5.0 2.82 1.47 1.10 19.2 59.8 17.70 16.71 0.44 1.600 84.1 5.6 3.06 1.67 1.12 15.9 68.2 19.54 18.82 0.20 CALC. RAW COAL 100.0 15.5 5.68 4.39 0.9R ANAL. RAW CCAL 100. 17.9 6.99 5.25 1.46 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 23.7 3.2 1.98 0.41 1.19 76.3 33.2 6.11 3.92 1.36 1.320 38.2 4.0 2.19 0.53 1.20 61.8 39.8 6.95 4.67 1.39 1.350 51.3 4.4 2.28 0.62 1.18 48.7 49.0 8.13 5.69 1.47 1.400 59.6 5.4 2.39 0.66 1.18 40.4 56.6 9.17 6.67 1.53 1.600 71.8 7.9 2.62 0.89 1.10 28.2 72.4 11.52 8.69 1.88 ANAL. RAW COAL SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 25.9 5.2 3.23 0.62 2.54 74.1 26.3 5.20 3.06 2.08 1.300 34.3 5.3 3.26 0.61 2.59 65.7 28.9 5.44 3.38 2.00 1.320 47.7 6.1 3.32 0.68 2.54 52.3 34.2 5.94 4.03 1.89 1.400 72.0 7.9 3.73 I. 00 2.60 28.0 54.0 7.16 6.11 1.17 1.600 81.3 9.5 3.94 1.35 2.46 18.7 69.9 7.95 7.13 1.07 L. RAW COAL 100.0 20.8 4.69 2.43 2.20 SIZE 3/8 INCH X 14 MFSH FLOAT FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S 1.280 19.7 5.0 3.18 0.72 2.43 80.3 22.0 5.52 3.35 1.96 1.300 32.7 5.2 3.24 0.68 2.52 67.3 25.2 5.94 3.88 1.83 1.320 46.3 5.7 3.26 0.74 2.48 53.7 29.9 6.60 4.64 1.69 1.400 71.4 7.8 3.59 1.08 2.38 28.6 45.9 8.71 7.20 1.24 1.600 79.7 9.0 3.81 1.40 2.29 20.3 56.8 9.93 8.46 1.14 CALC. RAW COAL 100. 18.7 5.06 2.83 2.06 ANAL. PAW COAL 100.0 20.2 5.34 3.23 2.04 SIZE 14 MESH X 100 MESH SINK FRACTION CUM.WT. ASH TOT.S PYR.! 80.3 22.0 5.52 3.35 67.3 25.2 5.94 3.88 53.7 29.9 6.60 4.64 28.6 45.9 8.71 7.20 20.3 56.8 9.93 8.46 FLOAT FRACTI ION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 13.7 2.8 2.76 0.27 2.46 86.3 28.6 4.83 2.96 1.78 1.300 33.1 4.3 2.99 0.58 2.38 66.9 35.4 5.32 3.58 1.62 1.350 53.8 5.9 3.22 0.63 2.56 46.2 47.5 6.10 4.87 1.07 1.400 60.7 6.4 3.26 0.86 2.36 39.3 54.0 6.54 5.26 I. 11 1 .600 71.6 9.1 3.63 1.17 2.41 28.4 65.4 6.87 6.17 0.51 ANAL. RAW COAL SIZE 1 1/2 INCH X SP.GRAV. CUM.WT. ASH 1.290 15.4 4.7 1.310 37.3 5.1 1.325 50.8 5.0 1.400 77.3 6.5 1.600 85.3 8.2 L. RAW COAL 100. 15.9 FLOAT FRACTION TOT.S PVR.S 2.15 2.05 2.07 2.26 2.57 3.71 0.66 0.64 0.63 0.77 1.03 2.25 ORG.S 1.47 1.40 1.44 1.47 1.46 1.41 SINK FRACTION CUM.MT. ASH TOT.S PVR.S 84.6 17.9 3.99 2.54 62.7 22.3 4.70 3.21 49.2 27.2 5.40 3.92 22.7 47.9 8.65 7.29 14.7 60.6 10.33 9.33 ORG.S 1.40 1.42 1.38 1.21 1.12 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S org.: 1.290 26.1 3.6 2.18 0.49 1.69 73.9 16.7 4.01 2.53 1.36 1.310 42.7 4.3 2.24 0.59 1.64 57.3 20.0 4.50 3.04 1.31 1.325 54.1 4.6 2.24 0.63 1.61 45.9 23.5 5.06 3.61 1.26 1.400 77.7 6.3 2.36 0.82 1.53 22.3 37.6 7.63 6.10 1.15 1.600 85.2 7.4 2.48 0.96 1.51 14.8 47.4 9.61 7.96 I. 11 CALC. RAH COAL 100.0 13.3 3.54 2.00 1.45 ANAL. RAW COAL 100.0 15.8 3.84 2.23 1.55 SP.GRAV. CUM.WT. ASH 1.300 1.350 1.400 1.600 29.5 58.9 71.1 80.6 2.2 4.3 5.5 7.1 L. RAW COAL 100. 17.5 FLOAT FRACTION 1.83 2.02 2.16 2.31 3.33 0.23 0.42 0.56 0.72 1.87 14 MESH X 100 MESH 1.55 1.51 1.49 1.45 SINK FRACTION ASH TOT.S PYR.S 70.5 23.9 41.1 36.4 28.9 47.0 19.4 60.7 3.96 5.21 6.21 7.57 2.56 3.95 5.09 6.65 ORG.S 1.27 1.12 1.01 0.93 1.35 SIZE 1 1/2 INCH X FLOAT FRACTION 1.280 1.300 1.330 1.400 1.600 ANAL. RAW COAL 13.3 48.5 63.6 82.3 90.3 100.0 2.6 3.8 TOT.S 0.83 0.93 0.76 0.83 1.14 1.18 PYR.S 0.26 0.33 0.31 0.38 0.48 0.53 0.57 0.60 0.45 0.45 0.66 0.64 SINK FRACTION ASH TOT.S PYR.S 86.7 15.5 51.5 23.2 36.4 30.2 17.7 50.5 9.7 73.4 1.23 1.42 1.91 2.81 1.55 0.57 0.72 0.91 1.23 I. 00 0.65 0.68 0.97 1.52 0.45 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 21.6 2.1 0.71 0.31 0.40 78.4 16.3 1.14 0.64 0.50 1.300 44.2 2.7 0.80 0.31 0.49 55.8 21.6 1.25 0.78 0.47 1.330 67.8 5.3 0.88 0.36 0.53 32.2 30.0 1.40 1.02 0.37 1.400 85.2 6.6 0.90 0.40 0.50 14.8 51.5 1.92 1.58 0.34 1.600 91.5 7.6 0.93 0.42 0.51 8.5 73.5 2.39 2.21 0.18 CALC. RAW COAL 100.0 13.2 1.05 0.57 0.48 ANAL. RAW COAL 100.0 14.0 1.16 0.52 0.63 SIZE 14 MESH X 100 MESH 1.280 1.300 1.350 1.400 1.600 49.8 61.1 72.4 81.2 88.9 ASH 2.9 3.5 4.1 5.1 6.3 FLOAT FRACTION 0.93 0.94 0.98 0.98 1.00 0.24 0.28 0.28 0.31 0.37 0.67 0.64 0.68 0.65 0.61 SINK FRACTION ASH TOT.S PYR.S 50.2 29.6 38.9 36.4 27.6 48.3 18.8 64.7 11.1 96.4 2.01 2.30 2.76 3.59 5.23 1.18 1.39 1.84 2.44 3.43 ORG.S 0.81 0.90 0.90 1.13 1.78 ANAL. RAH COAL 100.0 16.3 1.47 0.71 0.74 SIZE 1 I/? INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PVR.S ORG.S 1.290 20.0 4.4 2.26 0.40 1.85 80. 19.4 5.91 4.09 1.74 1.310 31.8 5.1 2.30 0.39 1.89 68.2 21.7 6.52 4.73 1.70 1.335 45.6 6.0 2.31 0.53 1.76 54.4 25.1 7.5<> 5.71 1.76 1.400 73.5 8.5 2.75 0.94 1.77 26.5 38.3 11.92 10.03 1.73 1.600 87.2 10.5 3.35 1.58 1.70 12.8 56.6 17.65 15.41 2.17 ANAL. RAW COAL 100.0 16.4 5.18 3.35 1.76 SI7E 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.S 4.1 2.37 0.49 1.87 87.9 15.7 5.52 3.85 1.59 4.8 2.42 0.53 1.88 74.7 17.5 6.06 4.43 1.54 5.9 2.51 0.63 1.87 57.1 20.6 7.11 5.56 1.44 7.9 2.75 0.94 1.80 29.7 29.3 10.79 9.38 1.21 9.9 3.23 1.43 1.73 13.8 41.4 17.04 15.76 0.96 14.3 5.14 3.45 1.62 16.0 5.66 3.85 1.73 SIZE 14 MFSH X 100 MESH SP.GRAV CUM.WT 1.290 12.1 1.310 25.3 1.335 42.9 1.400 70.3 1.600 86.2 CALC. RAW COAL 100.0 ANAL. RAW COAL 100. FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM, .WT. ASH TOT.S PYR.S ORG.! 1.300 26.1 4.0 2.19 0.47 1.70 73. .9 31.6 7.77 5.73 1.83 1.350 46.5 6.4 2.64 0.90 1.70 53. .5 40.0 9.50 7.37 1.94 1.400 56.5 7.7 2.81 0.95 1.8? 43, ,5 46. 1 10.86 8.79 1.84 1.600 71.3 10.3 3.26 1.42 1.78 ?e, .7 59.4 13.89 11.66 1.95 L. RAW COAL 100. 24.4 6.31 4.36 1.83 SIZF 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.S 1.250 14.0 3.2 1.80 0.72 0.90 86.0 25.3 5.24 3.21 1.31 1.265 29.0 4.1 2.15 1.11 0.80 71.0 29.6 5.83 3.57 2.04 1.300 53.6 4.3 2.26 1.12 0.88 46.4 42.9 7.65 4.87 2.60 1.400 68.4 6.7 2.42 1.36 0.72 31.6 55.8 9.83 6.11 3.76 1.600 76.8 7.0 3.01 1.54 I. 00 23.2 72.5 10.55 7.23 3.93 ANAL. RAW COAL 100. ?2.2 4.76 2.86 1.68 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S org.: 1.250 17.6 3.8 2.19 0.81 1.21 82.4 23.2 5.09 3.92 0.77 1.260 32.0 4.1 2.23 0.90 1.15 68.0 27.1 5.68 4.54 0.71 1.300 56.8 4.5 2.43 1.16 1.06 43.2 39.8 7.40 6.29 0.57 1.400 71.9 5.6 2.81 1.52 1.03 28.1 56.0 9.09 8.11 0.38 1.600 79.3 7.5 3.21 1.93 0.99 20.7 66.9 9.82 8.91 0.31 C. RAH COAL 100. 19.8 4.58 3.37 0.85 CALC ANAL. RAW COAL SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TUT.S PYR.S ORG.S CUM.WT. ASH TOT.S PVR.S ORG.! 1.280 10. 3.1 2.00 0.63 0.81 90.0 40.2 5.^ 3.47 0.80 1.300 15.9 3.3 2.04 0.63 0.89 84.1 42.8 5.23 3.67 0.78 1.350 36.2 4.5 2.28 0.65 1.02 63.8 54.7 6.10 4.63 0.68 1.400 46.4 5.3 2.44 0.78 1.02 53.6 63.5 6.69 5.28 0.61 1.600 53.8 8.3 2.78 1.11 0.99 46.2 69.3 6.98 5.61 0.58 L. RAW COAL 100.0 36.5 4.72 3.19 0.80 SAMPLE 7 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUH.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S 1.270 16.6 6.5 2.36 0.28 2.05 83.4 24.1 4.41 2.53 1.290 36.0 7.3 2.44 0.35 2.01 64.0 29.0 4.99 3.18 1.310 51.1 7.5 2.48 0.38 2.08 48.9 35.5 5.73 4.02 1.400 74.6 9.2 2.78 0.71 1.99 25.4 56.4 7.86 6.4? 1.600 84.2 10.6 3.22 1.02 2.11 15.8 77.7 8.60 8.24 iL. RAW COAL 100.0 21.2 4.07 2.16 1.84 ORG.S 1.80 1.74 1.59 1.40 0.40 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SP.GRAV. CUM.WT. ASH TOT.S PVR.S org.: 1.270 1.290 1.310 1.400 1.600 11.3 28.4 44.4 70.7 80.6 5.8 6.3 6.8 8.4 9.9 2.51 2.53 2.53 2.69 2.91 0.37 0.39 0.43 0.68 0.89 2.08 2.09 2.04 1.92 1.91 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 20.6 20.9 3.97 3.90 FLOAT FRACTION 2.04 1.97 SIZE 1.71 1.84 14 MESH SP.GRAV. CUM.WT. ASH TOT.S PVR.S ORG.! 1.330 1.340 1.350 1.400 1.600 8.6 17.9 23.3 47.3 67.5 3.3 4.5 4.7 6.8 10.5 2.40 2.43 2.54 2.60 2.93 0.17 0.29 0.27 0.40 0.67 2.16 2.05 2.18 2.08 2.06 ANAL. RAW COAL 100. 32.1 3.73 2.11 1.48 CUM.WT. ASH 88.7 22.5 71.6 26.3 55.6 31.7 29.3 50.2 19.4 65.3 CUM.WT. ASH 91.4 34.8 82.1 38.1 76.7 40.4 52.7 54.8 32.5 77.0 SINK FRACTION TOT.S PVR.S 4.15 4.53 5.11 7.06 8.36 3.86 4.01 4.09 4.74 5.39 2.26 2.70 3.33 5.33 6.81 SINK FRACTION TOT.S PVR.S 2.29 2.51 2.67 3.64 5.10 ORG.S 1.66 1.56 1.45 1.21 0.90 ORG.S 1.42 1.36 1.27 0.94 0.28 1.285 1.300 1.310 1.400 1.600 SAMPLE 8 SIZE 1 1/2 INCH X FLOAT FRACTI [ON CUM.WT. ASH TOT.S PYR.S ORG.S 17.2 6.0 2.37 0.35 1.98 38.0 7.8 2.57 0.36 2.16 53.3 9.4 2.65 0.54 2.06 78.2 10.6 3.01 0.89 2.00 87.6 12.7 3.43 1.25 2.00 SINK FRACTION iSH TOT.S PYR.S 82.8 21.1 62.0 25.1 46.7 28.9 21.8 46.8 12.4 59.5 4.27 4.78 5.41 7.28 7.54 1.70 2.15 2.53 3.55 3.02 ORG.S 2.52 2.60 2.85 3.97 5.47 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PVR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.285 25.3 5.5 2.41 0.42 1.92 74.7 18.4 4.71 2.66 1.84 1.300 33.2 5.7 2.41 0.43 1.91 66.8 19.8 4.98 2.92 1.84 1.310 38.7 5.9 2.42 0.43 1.93 61.3 20.9 5.20 3.14 1.82 1.400 75.2 8.1 2.70 0.75 1.87 24.8 36.4 8.46 6.17 1.85 1.600 88.1 9.8 3.09 I. 11 1.87 11.9 54.4 11.81 9.41 1.78 CALC. RAW COAL 100.0 15.1 4.13 2.09 1.86 ANAL. RAW COAL 100.0 18.4 4.00 1.71 2.25 SIZE 14 MESH X 100 MESH FLOAT FRACTI [ON SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 1.300 1.350 1.400 1.600 19.1 27.4 56.1 70.2 77.1 3.8 3.9 6.6 7.7 11.3 2.41 2.43 2.64 2.72 3.05 0.35 0.33 0.52 0.60 0.92 2.02 2.06 2.07 2.05 2.03 80.9 72.6 43.9 29.8 22.9 29.5 32.4 47.6 64.4 69.4 3.99 4.17 5.03 5.98 5.84 2.22 2.4* 3.57 4.83 5.02 1.58 1.51 1.14 0.74 0.41 L. RAW COAL 100.0 24.6 3.69 1.86 1.66 SAMPLE 9 SIZE 1 1/2 INCH X FLOAT FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S 1.295 1.320 1.340 1.400 1.600 23.3 39.2 46.6 62.9 77.9 5.4 6.1 7.4 8.9 10.8 2.13 2.18 2.23 2.41 2.92 0.29 0.36 0.55 0.70 1.23 1.83 1.81 1.67 1.70 1.68 ,L. RAW COAL 100.0 22.5 4.36 2.91 1.38 SINK FRACTION UM.WT. ASH TOT.S PYR.S 76.7 27.7 5.04 3.71 60.8 33.1 5.77 4.55 53.4 35.7 6.22 4.97 37.1 45.6 7.67 6.66 22.1 63.7 9.44 8.83 ORG.S 1.24 1.10 1.13 0.84 0.32 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.! 1.295 18.5 3.9 2.08 0.22 1.85 1.320 28.3 4.7 2.14 0.29 1.84 1.340 45.9 5.7 2.21 0.43 1.77 1.400 69.7 8.0 2.37 0.59 1.76 1.600 79.5 9.8 2.61 0.85 1.73 CALC. RAW COAL 100.0 22.4 4.04 2.51 1.46 ANAL. RAW COAL 100. 23.5 3.81 FLOAT FRACTION 2.28 SIZE 1.50 14 MESH SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 29.8 2.8 2.06 0.19 1.84 1.320 38.1 3.7 2.14 0.25 1.87 1.350 50.2 5.0 2.16 0.36 1.78 1.400 61.7 6.7 2.25 0.49 1.73 1.600 77.0 9.8 2.45 0.86 1.54 SINK FRACTION ASH TOT.S PYR.S 81.5 26.6 71.7 29.4 54.1 36.5 30.3 55.4 20.5 71.4 70.2 29.9 61.9 32.9 49.8 38.7 38.3 46.1 23.0 62.0 4.48 4.79 5.59 7.87 9.57 5.19 5.56 6.38 7.50 10.32 3.03 3.39 4.28 6.92 8.93 SINK FRACTION TOT.S PYR.S 3.72 4.16 5.00 6.18 8.73 1.37 1.31 1.19 0.76 0.39 ORG.S 1.41 1.34 1.30 1.23 1.54 ANAL. RAW COAL SAMPLE 10 1 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.' 1.270 11.9 3.5 2.25 0.39 1.85 88.1 17.8 4.55 3.02 1.43 1.280 31.1 3.5 2.24 0.37 1.86 68.9 21.8 5.20 3.77 1.31 1.300 51.2 4.1 2.35 0.51 1.83 48.8 28.7 6.30 5.02 1. 11 1.400 80.8 6.4 2.55 0.70 1.64 19.2 56.9 11.56 11.17 0.81 1.600 83.4 7.7 2.63 0.94 1.69 16.6 58.3 12.57 11.60 0.42 ANAL. RAW COAL SP.GRAV. CUM.WT. ASH 1.270 11.9 3.1 1.280 31.0 3.3 1.300 54.8 3.9 1.400 82.0 5.3 1.600 87.4 6.8 CALC. RAW COAL 100. 14.5 ANAL. RAW COAL 100.0 16. 1 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION TOT.S PYR.S ORG.S CUM.WT. 2. .19 ?, .25 2, .28 2. .46 2, .62 3. .95 3. .82 0.37 0.43 0.47 0.66 0.83 2.28 2.24 1.82 1.82 1.80 1.78 1.77 1.59 1.53 SINK FRACTION ASH TOT.S PYR.S 88.1 16.1 69.0 19.5 45.2 27.3 18.0 54.3 12.6 68.1 4.19 4.75 5. 98 10.75 13.23 2.54 3.12 4.49 9.67 12.39 ORG.S 1.55 1.48 1.32 0.69 0.34 SIZE 14 MESH X 100 MESH FLOAT FRACT1 ION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 20.8 1.9 1.97 0.20 1.74 79.2 27.9 4.65 3.22 1.30 1.300 41.3 2.6 2.02 0.28 1.70 58.7 36.5 5.55 4.22 1.17 1.350 59.2 3.9 2.15 0.44 1.66 40.8 49.5 6.90 5.71 1.00 1.400 66.3 4.8 2.20 0.52 1.63 33.7 57.3 7.81 6.66 0.92 1.600 73.9 6.7 2.30 0.68 1.55 26.1 67.2 9.16 8.00 0.9* ANAL. RAW COAL SAMPLE 11 SIZE 1 1/2 INCH X SP.GRAV. CUM.WI. ASH 1.270 17.2 4.0 1.300 50.1 4.8 1.330 68.3 6.0 1.400 81.1 7.3 1.600 85.4 8.0 ,L. RAW COAL 100.0 19.9 FLOAT FRACTION TOT.S 1.01 0.81 0.82 0.90 0.92 1.37 PVR.S 0.35 0.42 0.46 0.50 0.54 0.59 0.66 0.38 0.36 0.40 0.3"8 0.76 CUM.WT. 82.8 49.9 31.7 18.9 14.6 SINK FRACTION ASH TOT.S PVR.S 23.2 35.1 49.8 74.0 89.5 1.44 1.93 2.56 3.39 4.00 0.64 0.76 0.87 0.98 0.88 ORG.S 0.78 1.14 1.62 2.30 2.98 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION 1.27C 1.300 1.330 1.400 1.600 CALC. RAW COAL ANAL. RAW COAL CUM.WT, 20.6 49.9 67.7 80.1 84.4 100.0 100.0 3.3 4.2 5.6 6.8 7.6 18.6 19.2 TOT.S 1.05 0.91 1.01 1.10 1.13 1.47 1.69 PYR.S 0.42 0.42 0.48 0.52 0.56 0.92 0.90 0.63 0.49 0.53 0.58 0.57 0.55 0.77 SINK FRACTION ASH TOT.S PYR.S 79.4 22.6 50.1 33.0 32.3 46.0 19.9 66. 1 15.6 78.2 1.58 2.03 2.43 2.96 3.31 1.05 1.42 1.85 2.53 2.87 ORG.S 0.53 0.61 0.58 0.43 0.43 1.300 1.350 1.400 1.600 ANAL. RAW COAL 33.6 60.5 71.6 81.2 100.0 2.2 3.8 5.0 SIZE FLOAT FRACTION TCT.S PYR.S 0.99 1.08 1.11 1.17 1.51 0. 19 0.28 0.30 0.36 0.72 14 MESH X 100 MESH 0.76 0.74 0.74 0.74 CUM.WT. ASH 66.4 28.4 39.5 43.8 28.4 56.4 18.8 75.7 SINK FRACTION TOT.S PYR.S 1.77 2.17 2.52 2.98 0.99 1.39 1.78 2.27 OPG.S 0.59 0.51 0.42 0.26 0.65 SIZE FLOAT FRACTION TOT.S PYR.S SAMPLE 12 1 1/2 INCH X ORG.S SINK FRACTION ASH TOT.S PYR.S ORG.S 1.285 1.305 1.320 1.400 1.600 ANAL. RAW COAL 14.6 35.9 49.3 71.8 78.2 100.0 3.0 4.0 4.7 6.7 8.1 1.10 1.28 1.27 1.43 1.54 1.74 0.35 0.51 0.53 0.64 0.77 1.15 0.75 0.77 0.73 0.79 0.77 0.56 85.4 28.3 64.1 36.1 50.7 44.0 28.2 70.2 21.8 83.8 1.85 2.00 2.20 2.53 2.46 1.29 1.51 1.75 2.45 2.51 0.53 0.44 0.39 ■0.03 -0.19 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION 1.285 1.305 1.320 1.400 1.600 CALC. RAW COAL ANAL. RAW COAL SP.GRAV. 1.280 1.300 1.350 1.400 1.600 CUM, .WT. ASH TOT.S PYR.S org.: 12.2 31.6 42.7 62.6 76.0 2.9 3.4 4.2 6.1 7.8 1.11 1.20 1.25 1.38 1.45 0.39 0.49 0.55 0.69 0.78 0.72 0.71 0.70 0.69 0.67 100.0 100.0 24.4 24.0 1.54 1.51 1.00 0.91 0.53 0.58 SIZE 14 MESH FLOAT FRACTION CUM.WT. ASH TOT.S PYR.S ORG.! 47. 58. 67. 71. 78. ,3 ,3 3 2.9 3.5 4.5 5.4 7.0 1.11 1.16 1.21 1.29 1.35 0.39 0.44 0.52 0.57 0.63 0.71 0.71 0.68 0.71 0.71 87.8 27.4 68.4 34.2 57.3 39.6 37.4 55.2 24.0 77.3 CUM.WT. ASH 52.7 46.0 41.7 56.5 32.9 68.6 28.2 77.0 21.7 92.7 SINK FRACTION TOT.S PYR.S 1.59 1.69 1.75 1.80 1.80 2.61 2.93 3.31 3.45 3.88 1.08 1.23 1.34 1.52 1.70 SINK FRACTION TOT.S PYR.S 2.12 2.50 2.89 3.16 3.72 0.50 0.44 0.40 0.26 0.07 ORG.S 0.46 0.40 0.38 0.25 0.11 ANAL. RAM COAL SAMPLE 13 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.'. 1.255 27.4 3.1 1.37 0.71 0.62 72.6 26.0 3.08 2.16 0.83 1.265 35.8 3.7 1.41 0.84 0.54 64.2 28.6 3.28 2.27 0.90 1.280 45.0 3.8 1.61 0.90 0.65 55.0 32.7 3.43 2.46 0.87 1.400 77.5 6.6 2.38 1.34 0.89 22.5 64.8 3.40 3.21 0.36 1.600 80.6 7.9 2.51 1.75 0.65 19.4 68.7 3.03 1.80 1.27 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH 1.255 1.265 1.280 1.400 1.600 CALC. RAW COAL ANAL. RAW COAL 37.1 2.6 46.0 2.7 56.5 3.0 79.4 4.9 84.0 5.9 100.0 16.2 100. 15.8 FLOAT FRACTION TOT.S PYR.S 1.35 1.41 1.52 2.09 2.26 2.77 2.73 0.55 0.58 0.67 1.19 1.34 1.96 1.82 0.76 0.75 0.81 0.85 0.85 0.74 0.84 CUM.WT. ASH 62.9 24.2 54.0 27.6 43.5 33.2 20.6 59.7 16.0 69.8 SINK FRACTION TOT.S PYR.S 3.61 3.93 4.40 5.38 5.47 2.79 3.13 3.63 4.94 5.18 ORG.S 0.73 0.73 0.65 0.30 0.15 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.'. 1.280 17.1 1.8 1.20 0.27 0.85 82.9 31.8 3.52 2.34 0.99 1.300 27.2 2.3 1.23 0.37 0.76 72.8 35.8 3.83 2.60 1.05 1.350 42.4 3.7 1.52 0.60 0.80 57.6 43.6 4.30 3.01 I. 10 1.400 58.7 4.5 1.62 0.69 0.79 41.3 58.3 5.25 3.84 1.23 1.600 70.8 7.1 1.98 1.01 0.82 29.2 74.2 5.88 4.37 1.33 ANAL. RAW COAL SAMPLE 14 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.245 24.6 4.4 2.97 0.67 2.25 75.4 18.1 6.09 3.59 2.37 1.260 35.8 5.2 3.04 0.63 2.32 64.2 20.0 6.59 4.12 2.35 1.280 58.3 5.6 3.14 0.61 2.46 41.7 27.4 8.37 6.03 2.17 1.400 85.5 7.9 3.34 0.81 2.47 14.5 54.8 17.00 15.02 1.57 1.600 90.3 8.7 3.60 1.28 2.20 9.7 70.6 21.33 17.67 3.64 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV '. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.245 15.9 4.4 3.00 0.51 2.43 84.1 13.5 4.93 2.32 2.44 1.260 23.6 4.4 3.04 0.52 2.45 76.4 14.4 5.11 2.50 2.43 1.280 40.5 4.8 3.06 0.54 2.45 59.5 17.0 5.68 3.05 2.42 1.400 88.7 7.7 3.28 0.67 2.49 11.3 46.3 15.12 12.68 2.02 1.600 92.8 8.3 3.36 0.76 2.48 7.2 59.4 20.84 18.47 1.89 CALC. RAW COAL 100.0 12.0 4.62 2.03 2.43 ANAL. RAW COAL 100.0 11.7 5.12 2.61 2.40 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.' 1.300 1.320 1.350 1.400 1.600 13.9 21.3 61.9 75.8 85.8 2.4 2.4 3.9 5.2 7.0 3.00 2.96 3.21 3.25 3.35 0.41 0.31 0.42 0.49 0.71 2.37 2.41 2.49 2.43 2.27 86.1 78.7 38.1 24.2 14.2 16.8 18.2 32.5 44.9 61.9 5.80 6.07 8.98 12.18 17.86 2.58 2.81 5.30 7.89 11.77 2.60 2.61 2.70 3.01 4.38 . RAM COAL 100.0 14.8 5.41 2.28 2.57 ANAL. RAM COAL SAMPLE 15 SIZE I 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 12.2 5.2 2.35 0.24 2.07 87.8 21.6 5.35 3.08 2.21 1.290 30.1 6.1 2.48 0.32 2.09 69.9 25.4 6.06 3.77 2.23 1.300 41.0 6.6 2.51 0.41 2.02 59.0 28.6 6.70 4.34 2.31 1.400 77.2 9.7 3.06 0.90 2.03 22.8 53.1 11.48 9.26 2.73 1.600 82.2 11.8 3.45 1.15 1.99 17.8 55.6 12.05 10.03 3.11 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV i. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 24.0 5.2 2.32 0.30 2.01 76.0 23.7 5.72 4.17 1.44 1.290 31.4 5.7 2.37 0.35 2.01 68.6 25.4 6.06 4.56 1.38 1.300 39.7 6.5 2.43 0.42 1.99 60.3 27.7 6.53 5.10 1.31 1.400 76.2 9.5 2.92 1.00 1.89 23.8 50.3 11.25 10.43 0.58 1.600 82.7 10.6 3.19 1.29 1.85 17.3 60.6 13.11 12.56 0.26 CALC. RAH COAL 100. 19.2 4.90 3.24 1.5B ANAL. RAW COAL 100.0 20.1 5.33 2.98 2.27 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTI [ON SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S org.: 1.280 13.3 2.6 2.18 0.17 2.00 86.7 26.2 4.74 2.75 1.90 1.300 30.0 3.3 2.27 0.26 2.00 70.0 31.4 5.31 3.33 1.87 1.350 55.8 5.7 2.40 0.43 1.95 44.2 45.1 6.92 4.91 1.86 1.400 67.6 7.3 2.62 0.59 2.01 32.4 56.1 8.11 6.21 1.70 1.600 77.3 9.4 2.89 0.88 1.96 22.7 69.8 9.54 7.62 1.74 ANAL. RAW COAL 1.270 1.290 1.320 1.400 1.600 SAMPLE 16 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION CUM.WT. ASH TCT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S 15.8 4.1 3.88 0.46 3.41 84.2 19.4 5.66 2.94 31.7 4.5 3.98 0.49 3.49 68.3 22.8 6.03 3.51 53.7 6.0 4.02 0.58 3.43 46.3 29.8 6.96 4.83 89.9 8.8 4.21 0.91 3.26 10.1 90.0 15.79 17.15 91.5 10.1 4.45 1.35 3.05 8.5 91.3 15.39 15.47 ORG.S 2.67 2.47 2.05 -1.39 -0.01 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORC.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.270 1.290 1.320 1.400 1.600 11.8 26.1 51.1 81.3 97.7 3.0 3.7 5.6 8.5 9.6 3.98 3.84 3.89 4.15 4.37 0.31 0.39 0.54 0.95 1.20 3.65 3.43 3.31 3.14 3.08 88.2 73.9 48.9 18.7 12.3 18.7 21.5 28.6 53.1 68.2 6.08 6.53 7.86 13.12 16.22 3.25 3.79 5.37 11.39 15.02 2.70 2.59 2.29 1.40 0.88 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 16.8 16.8 5.83 5.64 2.90 2.70 SIZE 14 2.81 2.89 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 26.1 2.3 3.77 0.28 3.40 73.9 28.4 5.60 2.95 2.62 1.320 40.9 3.1 3.81 0.36 3.35 59.1 34.4 6.03 3.56 2.45 1.350 58.2 4.7 3.85 0.48 3.25 41.8 45.1 6.89 4.71 2.22 1.400 70.6 6.1 3.87 0.53 3.20 29.4 58.8 8.12 6.38 1.91 1.600 83.0 8.5 3.98 0.79 3.02 17.0 85.6 10.69 9.38 1.84 L. RAH COAL 100.0 21.6 5.12 2.25 2.82 1.240 1.260 1.270 1.400 1.600 ANAL. RAM COAL CUM.WT. ASH 13.9 3.1 33.2 3.3 47.9 3.4 85.7 5.6 92.0 7.5 FLOAT FRACTION TOT.S 2.79 2.78 2.87 3.76 4.20 5.92 0.68 0.62 0.78 1.64 2.30 3.34 SAMPLE 17 I 1/2 INCH X 2.11 2.16 2.09 2.12 1.87 SINK FRACTION ASH TOT.S PYR.S 86.1 14.1 66.8 17.2 52.1 21.1 14.3 54.6 8.0 71.2 6.43 7.48 8.72 18.86 25.70 3.77 4.69 5.69 13.53 15.30 ORC.S 2.56 2.67 2.48 4.78 9.75 2.50 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION TOT.S PYR.S SINK FRACTION TOT.S PYR.S ORG.S 1.240 1.260 1.2 70 1.400 1.600 CALC. RAH COAL ANAL. RAW COAL 14.8 32.1 42.1 84.8 90.9 100. 100.0 2.9 3.2 3.5 5.9 6.9 11. I 11.7 2.62 2.67 2.77 3.67 4.12 5.63 5. 82 0.47 0.49 0.56 1.32 1.80 3.36 3.50 2.13 2.16 2.18 2.29 2.25 2.18 2.25 85.2 12.6 67.9 14.9 57.9 16.7 15.2 40.5 9.1 53.7 6.16 7.03 7.71 16.57 20.75 3.86 4.71 5.39 14.72 18.96 2.19 2.19 2.19 1.61 1.53 1.260 1.280 1.300 1.400 1.600 ANAL. RAM COAL 20.2 48.9 61.7 78.5 83.3 100.0 1.8 2.8 3.4 4.5 5.7 SIZE FLOAT FRACTION TOT.S PYR.S 2.35 2.52 2.78 3.20 3.71 5.75 0.26 0.39 0.50 0.93 1.37 3.57 ORG.S 2.06 2.09 2.23 2.20 2.27 2.10 SINK FRACTION ASH TOT.S PYR.S 79.8 20.0 51.1 29.2 38.3 37.1 21.5 59.4 16.7 69.2 6.61 8.84 10.53 15.06 15.93 4.41 6.61 8.52 13.21 14.54 ORG.S 2.11 2.11 1.89 1.73 1.25 SAMPLE 18 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.'. 1.275 12.1 3.1 3.27 0.39 2.86 87.9 18.1 5.14 2.51 2.55 1.300 44.7 5.6 3.41 0.58 2.82 55.3 24.9 6.12 3.60 2.40 1.400 78.9 8.3 3.73 0.96 2.75 21.1 46.2 9.32 7.07 1.99 1.600 86.5 9.5 3.97 1.26 2.69 13.5 59.9 10.93 8.59 1.95 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.'. 1.270 13.3 3.3 3.38 0.46 2.91 86.7 17.5 5.19 2.75 2.40 1.300 36.3 4.4 3.42 0.57 2.83 63.7 22.0 5.82 3.51 2.27 1.350 69.7 6.6 3.56 0.81 2.73 30.3 36.2 8.14 6.20 1.87 1.400 81.6 7.7 3.69 0.96 2.71 18.4 50.4 10.51 9.03 1.39 1.600 88.6 8.9 3.89 1*19 2.67 11.4 67.7 13.18 12.18 0.91 CALC. RAW COAL 100.0 15.6 4.95 2.44 2.47 ANAL. RAW COAL 100. 14.0 4.51 1.88 2.58 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S org.: 1.300 19.8 3.2 3.16 0.27 2.72 80.2 24.9 4.56 2.00 2.11 1.350 58.0 4.9 3.22 0.41 2.60 42.0 42.3 5.74 3.39 1.72 1.400 68.2 5.6 3.35 0.51 2.61 31.8 52.8 6.27 4.13 1.42 1.600 81.6 8.0 3.60 0.71 2.57 18.4 76.5 7.30 5.87 0.72 ANAL. RAW COAL SAMPLE 19 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.285 30.9 5.0 2.98 0.93 2.02 69.1 19.6 6.02 3.64 2.32 1.300 41.9 5.9 3.18 0.88 2.28 58.1 21.7 6.45 4.18 2.19 1.325 53.8 6.0 3.14 0.94 2.06 46.2 25.7 7.34 4.97 2.43 1.400 74.0 7.2 3.33 1.13 2.16 26.0 37.6 10.06 7.55 2.43 1.600 85.1 10.1 3.62 1.64 1.74 14.9 43.7 13.42 9.43 5.03 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SP.GRAV I. CUM.WT. ASH TOT.S PYR.S 1.285 41.1 4.4 2.94 0.70 1.300 44.7 4.4 2.95 0.70 1.325 50.6 4.6 2.97 0.74 1.400 68.8 6.3 3.24 1.07 1.600 86.1 8.4 3.54 1.47 CALC. RAW COAL 100.0 14.3 5.17 3.12 ANAL. RAW COAL 100.0 14.7 5.29 2.97 2.21 2.21 2.20 2.13 2.03 1.96 2.30 58.9 55.3 49.4 31.2 13.9 ASH 21.3 22.3 24.3 32.1 51.3 SINK FRACTION TOT.S PYR.S 6.73 6.97 7.43 9.44 15.30 4.81 5.08 5.57 7.64 13.34 1.79 1.76 1.73 1.61 1.59 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.'. 1.30C 9.5 2.4 2.75 0.31 2.43 90.5 16.7 4.75 2.61 2.09 1.325 36.5 2.9 2.86 0.37 2.48 63.5 22.4 5.54 3.55 1.91 1.350 46.0 3.3 2.91 0.41 2.47 54.0 25.5 5.97 4.08 1.82 1.400 69.9 5.1 3.10 0.61 2.47 30.1 39.0 7.95 6.5? 1.31 1.600 83.0 7.1 3.34 0.96 2.36 17.0 55.3 10.52 9.37 0.95 L. RAW COAL 100.0 15.3 4.56 2.39 2.12 SAMPLE 20 SIZE I 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TCT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.250 19.7 2.9 2.31 0.21 2.09 80.3 44.2 5.39 3.61 1.67 1.260 24.4 3.0 2.34 0.16 2.13 75.6 46.8 5.57 3.84 1.63 1.275 34.9 3.8 2.51 0.26 2.23 65.1 53.4 6.00 4.38 1.49 1.400 61.8 6.8 2.65 0.49 2.09 38.2 83.5 8.23 6.90 1.20 1.600 65.9 8.3 2.77 0.73 1.95 34.1 89.8 8.66 7.21 1.36 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.250 13.7 2.3 2.32 0.30 1.82 86.3 32.7 3.94 1.74 1.99 1.260 21.1 2.5 2.34 0.39 1.83 78.9 35.5 4.09 1.86 2.00 1.275 29.7 2.9 2.38 0.37 1.89 70.3 39.4 4.28 2.04 2.00 1.400 56.9 7.6 2.67 0.50 2.05 43.1 56.2 5.10 2.93 1.85 1.600 67.9 8.9 2.71 0.50 2.07 32.1 70.1 5.86 3.75 1.73 CALC. RAW COAL 100.0 28.6 3.72 1.55 1.96 ANAL. RAW COAL 100.0 30.9 4.03 2.45 1.48 SIZE 14 MESH X 100 MFSH FLOAT FRACTION 1.280 1.300 1.350 1.400 1.600 CUM.WT. 15.0 30.5 40.7 45.4 53.1 2.0 2.7 4.0 5.1 7.2 2.14 2.29 2.44 2.46 2.51 0.29 0.39 0.52 0.60 0.66 1.75 1.80 1.81 1.75 1.73 SINK FRACTION ASH TOT.S PYR.S 85.0 48.7 69.5 58.8 59.3 67.6 54.6 72.1 46.9 80. A 3.49 3.73 3.87 3.98 4.17 2.25 2.65 2.95 3.09 3.43 1.06 0.88 0.71 0.67 0.51 ANAL. RAW COAL 100.0 3.29 1.96 1.16 SAMPLE 21 SIZE I 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 1.300 1.320 1.400 1.600 28.2 38.2 45.6 57.7 64.3 4.5 4.6 4.7 6.7 7.6 2.58 2.75 2.66 2.86 3.28 0.84 0.78 0.86 I. 10 1.21 1.65 1.85 1.79 1.64 1.94 71.8 61.8 54.4 42.3 35.7 55.2 63.3 71.2 87.6 **** 5.24 5.57 6.02 6.71 6.67 3.83 4.36 4.78 5.57 6.20 1.32 1.14 1.09 1.10 0.46 ,L. RAW COAL 100.0 40.9 4.49 2.99 1.41 SIZE 3/8 INCH X 14 MESH SP .GRAV. 1 .280 1 .300 1 .320 I .400 1 .600 27.8 38.0 44.2 52.3 b8.3 3.8 4.6 5.2 6.5 7.8 FLOAT FRACTION TOT.S 2.53 2.56 2.64 2.78 2.86 PVR.S 0.65 0.73 0.81 0.95 1.04 ORG.S 1.77 1.72 1.71 1.70 1.68 72.2 47.3 62.0 54.0 55.8 59.0 47.7 66.7 41.7 73.6 SINK FRACTION TOT.S PYR.S 4.67 5.00 5.21 5.49 5.76 3.42 3.83 4.11 4.52 4.90 ORG.S 1.03 0.94 0.86 0.73 0.62 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 35.2 37.4 4.07 4.36 2.65 2.92 1.24 1.31 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 6.3 3.7 2.43 0.46 1.81 93.7 57.9 3.40 2.43 0.74 1.300 13.8 3.5 2.44 0.44 1.84 86.2 62.7 3.48 2.61 0.65 1.350 26.4 3.9 2.53 0.54 1.81 73.6 72.6 3.63 2.94 0.45 1.400 32.4 5.6 2.70 0.68 1.86 67.6 77.9 3.65 3.09 0.31 1.600 38.6 8.5 2.84 0.83 1.82 61.4 83.4 3.65 3.24 0.18 ANAL. RAW COAL SAMPLE 22 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.250 21.1 3.2 2.24 0.42 1.79 78.9 18.2 5.08 2.99 1.98 1.260 34.7 3.3 2.27 0.44 1.80 65.3 21.2 5.65 3.5? 2.01 1.280 54.4 3.5 2.47 0.56 1.88 45.6 28.7 6.88 4.70 2.01 1.400 75.1 4.7 2.89 1.01 1.83 24.9 46.1 9.28 6.79 2.27 1.600 82.5 6.7 3.11 1.19 1.84 17.5 54.1 10.94 8.39 2.41 L. RAW COAL 100.0 15.0 4.48 2.45 1.94 SIZE 3/8 INCH X 14 MESH FLOAT FRACT (ON SINK FRACTION SP.GRAV i. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.250 1.260 1.280 1.400 1.600 20.1 42.0 65.4 83.2 87.7 2.4 2.7 3.2 4.4 5.3 2.05 2.15 2.34 2.73 2.90 0.34 0.35 0.50 0.92 1.13 1.70 1.79 1.82 1.76 1.72 79.9 58.0 34.6 16.8 12.3 15.4 20.1 30.9 53.9 66.2 4.68 5.60 7.57 11.21 13.09 2.85 3.80 5.84 9.41 11.02 1.69 1.62 1.46 1.35 1.52 CALC. RAW ANAL. RAW COAL COAL 100.0 100.0 12.8 14.4 4.15 4.61 2.35 2.51 1.69 2.03 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 21.1 2.6 2.55 0.25 2.05 78.9 33.4 4.83 2.40 1.94 1.300 39.4 3.0 2.60 0.28 2.04 60.6 42.4 5.49 3.04 1.91 1.350 57.9 4.1 2.74 0.47 1.95 42.1 58.3 6.56 3.99 1.97 1.400 62.8 4.5 2.84 0.54 1.98 37.2 64.7 6.90 4.33 1.93 1.600 70.6 5.9 3.00 0.74 1.93 29.4 77.3 7.59 4.86 2.03 ANAL. RAW COAL 1.285 1.310 1.3*0 1.400 1.600 20.5 44.3 57.0 73.6 82.2 SAMPLE 23 SIZE 1 1/2 INCH X FLOAT FRACTION ASH TOT.S PYR.S ORG.S 3.9 2.62 0.42 2.20 4.8 2.71 0.57 2.14 6.0 2.77 0.63 2.14 8.0 2.85 0.80 2.05 9.0 2.97 0.96 2.01 79.5 26.3 55.7 35.1 43.0 42.5 26.4 59.9 17.8 80.3 SINK FRACTION TOT.S PYR.S 5.34 6.43 7.44 10.16 13.14 3.24 4.32 5.35 7.85 10.51 ORG.S 1.89 1.80 1.70 1.67 1.67 ANAL. RAW COAL 100.0 FLOAT FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S 1.285 1.310 1.340 1.400 1.600 25.6 36.7 54.0 75.7 84.7 4.0 4.6 5.5 7.3 9.0 2.55 2.59 2.61 2.68 2.84 0.42 0.46 0.51 0.65 0.85 CALC. RAW ANAL. RAW COAL COAL 100. 100.0 17.6 18.7 4.51 5.19 2.73 2.95 SIZE 3/8 INCH X 14 MESH 2.12 2.11 2.08 2.02 1.97 1.70 2.12 74.4 22.2 63.3 25.1 46.0 31.8 24.3 49.6 15.3 65.2 SINK FRACTION TOT.S PYR.S 5.18 5.63 6.74 10.21 13.75 3.53 4.05 5.34 9.23 13.19 ORG.S 1.56 1.46 1.26 0.72 0.20 TOT.S SIZE 14 MESH X 100 MESH FLOAT FRACTION PYR.S ORG.S SINK FRACTION ASH TOT.S PYR.S ORG.S 1.280 1.300 1.350 1.400 1.600 21.9 38.1 54.3 62.2 71.0 2.1 2.7 4.1 5.1 7.6 ANAL. RAW COAL 100.0 2.39 2.44 2.54 2.62 2.77 3.93 0.28 0.31 0.42 0.47 0.72 2.12 2.09 2.10 2.08 2.11 1.99 1.72 78.1 33.1 61.9 40.8 45.7 52.7 37.8 61.2 29.0 72.1 4.36 4.85 5.58 6.09 6.77 2.64 3.23 4.14 4.84 5.55 1.62 1.49 1.29 1.08 1.06 SAMPLE 24 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 21.6 4.4 2.78 0.07 2.71 78.4 17.3 6.07 3.67 2.14 1.310 35.0 5.5 2.84 0.45 2.37 65.0 19.3 6.72 4.20 2.20 1.330 52.3 6.5 2.93 0.59 2.34 47.7 23.3 8.02 5.41 2.17 1.400 80.5 8.6 3.29 0.81 2.43 19.5 38.9 13.91 11.48 1.56 1.600 92.2 9.7 3.83 1.70 2.04 7.8 71.2 23.45 16.96 4.86 ANAL. RAW COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 1.310 1.330 1.400 1.600 41.4 46.1 51.9 78.2 91.8 5.3 5.5 5.8 7.6 9.2 2.94 2.96 3.00 3.30 3.83 0.47 0.50 0.53 0.81 1.33 2.42 2.41 2.41 2.41 2.38 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 12.5 13.6 5.01 5.05 FLOAT FRACTION 2.54 2.52 SIZE 2.30 2.37 14 MESH SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 1.300 1.350 1.400 1.600 16.1 32.6 63.7 75.5 86.3 3.1 3.8 5.7 6.7 8.7 2.72 2.80 3.00 3.15 3.49 0.32 0.47 0.52 0.66 1.01 2.34 2.26 2.38 2.37 2.31 SINK FRACTION ASH TOT.S PYR.S 58.6 17.7 53.9 18.5 48.1 19.8 21.8 30.1 8.2 49.9 83.9 22.3 67.4 26.6 36.3 42.9 24.5 57.7 13.7 85.3 6.47 6.75 7.17 11.14 18.13 3.99 4.28 4.69 8.74 16.06 SINK FRACTION ASH TOT.S PYR.S 5.39 6.00 8.40 10.54 14.22 3.05 3.65 6.28 8.62 12.69 ORG.S 2.22 2.21 2.19 1.94 1.42 ORG.S 2.09 2.07 1.69 1.39 I. 00 ANAL. RAW COAL 1.290 1.310 1.325 1.400 1.600 ANAL. RAW COAL 18.8 36.0 52.4 76.6 85.9 100.0 3.1 4.4 5.2 7.8 9.1 FLOAT FRACTION TOT.S 2.47 2.52 2.63 3.02 3.21 4.48 PYR.S 0.47 0.65 0.55 0.86 1.33 2.76 SAMPLE 25 IA09 1 1/2 INCH X SINK FRACTION ORG.S CUH.WT. ASH TOT.S PYR.S 1.97 81.2 20.3 4.95 3.29 1.78 64.0 24.2 5.58 3.95 2.07 47.6 30.2 6.52 5.19 2.06 23.4 47.5 9.26 8.98 1.78 14.1 65.8 12.22 11.47 1.61 1.62 1.25 0.44 1.07 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SP .GRAV. I .290 1 .310 1 .325 1 .400 1 .600 20.3 34.6 45.4 72.6 85.3 3.2 4. 1 6.9 8.7 2.46 2.52 2.62 2.75 2.92 PYR.S 0.60 0.58 0.60 0.80 1.03 1.80 1.91 1.98 1.92 1.85 SINK FRACTION CUM.WT. ASH TOT.S PYR.S 79.7 18.6 5.63 3.82 65.4 21.5 6.30 4.54 54.6 24.2 6.96 5.30 27.4 38.3 10.93 9.45 14.7 54.5 17.01 15.55 ORG.S 1.72 1.65 1.54 1.26 1.08 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 15.5 15.5 4.99 4.78 3.17 2.91 1.74 1.83 SI7F 14 MFSH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 32.8 2.4 2.36 0.40 1.94 67.2 26.7 5.19 3.17 1.87 1.300 40.7 2.7 2.41 0.43 1.95 59.3 29.7 5.53 3.52 1.85 1.350 58.3 4.0 2.48 0.56 1.89 41.7 39.3 6.75 4.64 1.89 1.400 66.7 4.9 2.57 0.59 1.94 33.3 46.3 7.65 5.61 1.79 1.600 77.5 6.9 2.62 0.74 1.84 22.5 59.3 9.91 7.50 2.06 ANAL. RAW COAL SAMPLE 26 1 1/2 INCH X ASH FLOAT FRACTION TOT.S PYR.S SINK FRACTION TOT.S PYR.S ORG.S 1.280 1.310 1.340 1.400 1.600 ANAL. RAW COAL 17.1 41.1 58.3 80.2 91.8 100.0 4.0 5.3 6.4 7.7 9.1 2.98 3.19 3.21 3.96 0.29 0.53 0.56 1.17 1.61 2.22 2.62 2.53 2.51 2.52 2.53 2.60 82.9 17.0 58.9 21.4 41.7 26.5 19.8 43.6 8.2 78.6 5.26 6.04 7.19 8.56 9.24 2.62 3.40 4.54 6.47 9.05 2.60 2.65 2.73 2.92 3.38 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.' 1.280 11.8 3.2 3.03 0.30 2.73 88.2 12.4 4.89 2.50 2.36 1.310 37.7 4.4 3.15 0.48 2.68 62.3 15.5 5.59 3.30 2.24 1.340 65.0 5.4 3.29 0.64 2.64 35.0 22.4 7.25 5.20 1.95 1.400 85.4 7.1 3.68 1.08 2.59 14.6 36.4 10.50 9.00 1.29 1.600 93.8 8.3 4.12 1.58 2.53 6.2 57.9 13.01 12.26 0.52 CALC. RAM COAL 100. 11.4 4.67 2.24 2.40 ANAL. RAW COAL 100.0 11.4 4.85 2.23 2.57 SIZE 14 MESH X 100 MESH 1.300 1.320 1.350 1.400 1.600 CUM.WT. 19.6 34.2 49.0 68.4 85.6 2.2 3.1 4.1 6.0 8.6 FLOAT FRACTION TOT.S PYR.S 2.62 2.78 3.17 3.24 3.61 0.27 0.35 0.55 0.71 0.99 2.31 2.37 2.54 2.42 2.45 SINK FRACTION ASH TOT.S PYR.S 80.4 22.8 65.8 27.0 51.0 32.9 31.6 46.5 14.4 79.4 4.81 5.21 5.54 6.85 8.96 2.58 3.06 3.65 5.20 8.91 ORG.S 2.12 2.05 1.79 1.60 0.44 ANAL. RAW COAL 100. 4.38 2.13 2.16 ANAL. RAM COAL SAMPLE 27 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.MT. ASH TOT.S PYR.S ORG.! 1.290 17.1 5.1 2.89 0.60 2.28 82.9 22.3 4.86 2.76 2.00 1.320 31.3 5.7 2.97 0.65 2.32 68.7 25.6 5.23 3.18 1.93 1.340 52.9 7.2 3.03 0.63 2.39 47.1 33.1 6.19 4.37 1.67 1.400 76.0 9.5 3.27 0.85 2.42 24.0 50.7 8.48 7.27 0.88 1.600 88.9 10.8 3.47 1.18 2.28 11.1 88.3 12.93 12.08 0.21 SIZE 3/8 INCH X 14 MESH 1.290 1.320 1.340 1.400 1.600 CALC. RAM COAL ANAL. RAW COAL 16.8 3.5 36.9 5.0 58.3 6.6 77.4 9.0 88.3 10.9 100.0 16.8 100. 16.9 FLOAT FRACTION TOT.S PYR.S 2.86 2.94 3.08 3.28 3.52 4.85 5.21 0.41 0.49 0.65 0.91 1.22 2.62 2.84 ORG.S 2.43 2.44 2.40 2.34 2.25 2.13 2.26 CUM.MT. ASH 83.2 19.5 63.1 23.7 41.7 31.2 22.6 43.5 11.7 61.8 SINK FRACTION TOT.S PYR.S 5.25 5.96 7.33 10.21 14.88 3.07 3.88 5.38 8.48 13.25 ORG.S 2.07 1.96 1.76 1.44 1.25 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.MT. ASH TOT.S PYR.S ORG.S CUM.MT. ASH TOT.S PYR.S ORG.! 1.300 9.1 2.4 2.69 0.26 2.36 90.9 32.9 3.75 2.05 1.59 1.320 21.0 3.6 2.80 0.32 7.41 79.0 37.1 3.88 2.31 1.46 1.350 33.3 5.1 7.82 0.40 2.34 66.7 42.6 4.06 2.63 1.32 1.400 47.2 7.4 7.92 0.51 2.30 52.8 50.4 4.30 3.12 1.09 1.600 68.4 12.8 2.90 0.75 2.00 31.6 67.5 5.27 4.36 0.92 L. RAM COAL 100. 30.1 3.65 I. 89 1.66 SAMPLE 28 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.MT. ASH TOT.S PYR.S ORG.S CUM.MT. ASH TOT.S PYR.S ORG.! 1.270 6.5 2.5 1.38 0.44 0.93 93.5 16.0 2.89 1.79 1.05 1.300 37.1 4.1 1.46 0.79 0.65 62.9 21.6 3.57 2.24 1.27 1.330 65.9 5.8 1.69 0.89 0.76 34.1 33.1 4.92 3.27 1.58 1.400 83.4 7.0 1.95 1.14 0.76 16.6 55.8 7.01 4.51 2.45 1.600 88.3 7.5 2.16 1.35 0.76 11.7 72.5 7.54 4.34 3.15 L. RAW COAL 100.0 15.1 2.79 1.70 1.04 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.270 16.0 2.7 1.36 0.44 0.91 84.0 17.1 2.76 2.08 0.63 1.300 51.5 4.8 1.44 0.63 0.80 48.5 25.4 3.70 3.07 0.54 1.330 70.9 6.0 1.51 0.79 0.71 29.1 36.1 5.07 4.32 0.59 1.400 85.9 7.2 1.71 1.04 0.65 14.1 60.9 7.53 6.54 0.86 1.600 89.3 7.7 1.88 1.21 0.63 10.7 74.0 8.01 6.86 1.0? CALC. RAW COAL 100.0 14.8 2.53 1.82 0.68 ANAL. RAW COAL 100.0 15.8 2.59 1.51 1.04 SIZE 14 MFSH X 100 MESH 1.280 1.300 1.350 1.400 1.600 15.2 37.2 61.9 68.2 80.8 1.6 2.8 4.5 5.4 6.9 FLOAT FRACTION TOT.S 0.71 1.36 1.57 1.60 1.92 PYR.S 0.23 0.36 0.47 0.54 0.72 ORG.S 0.41 0.92 0.99 0.94 1.05 CUM.WT. ASH 84.8 23.1 62.8 29.9 38.1 44.7 31.8 50.7 19.2 74.1 SINK FRACTION TOT.S PYR.S 3.45 4.02 5.40 6.10 7.70 2.23 2.86 4.30 4.91 7.02 ORG.S 0.96 0.86 0.70 0.75 0.16 ANAL. RAW COAL 100. 3.03 1.93 0.88 SAMPLE 29 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S 1.290 1.30S 1.320 1.400 1.600 19.1 37.9 46.8 67.4 73.4 3.4 4.1 4.1 5.8 8.0 0.82 0.85 0.91 1.12 1.30 0.26 0.29 0.26 0.49 0.67 0.55 0.55 0.63 0.60 0.59 80.9 62.1 53.2 32.6 26.6 23.8 29.5 33.8 49.1 52.7 1.57 1.78 1.89 2.07 1.79 0.78 0.92 1.05 1.07 0.71 . RAM COAL 100. 19.9 1.43 0.68 0.72 ORG.S 0.76 0.82 0.80 0.97 1.08 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV l. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.290 19.0 3.1 0.82 0.29 0.52 81.0 22.9 1.58 0.96 0.57 1.305 34.0 3.8 0.85 0.29 0.55 66.0 27.0 1.73 1.12 0.57 1.320 47.4 4.3 0.86 0.32 0.52 52.6 32.5 1.95 1.30 0.60 1.400 69.1 6.0 0.99 0.46 0.51 30.9 48.4 2.41 1.68 0.69 1.600 75.8 7.2 1.09 0.55 0.52 ?4.2 56.4 2.49 1.74 0.69 CALC. RAk COAL 100.0 19.1 1.43 0.84 0.56 ANAL. RAW COAL 100.0 19.8 1.63 0.84 SIZE 0.76 14 MESH X 100 MESH FLOAT FRACTION 1.280 1.300 1.350 1.400 1.600 ANAL. RAW COAL CUM.WT. 10.5 38.4 54.9 62.0 70.3 100.0 2.1 2.5 3.7 4.5 0.79 0.85 I. 00 1.03 1.16 1.53 0.12 0. 16 0.27 0.32 0.48 0.92 0.66 0.68 0.72 0.69 0.66 0.58 SINK FRACTION ASH TOT.S PYR.S 89.5 25.9 61.6 36.4 45.1 47.4 38.0 54.2 29.7 63.2 1.62 1.95 2.18 2.35 2.41 1.01 1.39 1.71 1.90 1.96 ORG.S 0.57 0.52 0.41 0.40 0.39 SAMPLE 30 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.260 1.270 1.290 1.400 1.600 20.0 30.3 41.8 80.3 87.3 4.0 3.7 4.4 8.0 8.9 2.51 2.47 2.65 2.98 3.03 0.57 0.54 0.59 0.89 0.95 1.89 1.88 2.01 2.01 1.98 80.0 69.7 5R.2 19.7 12.7 21.9 24.6 28.3 60.3 82.9 4.53 4.85 5.19 8.82 11.69 2.71 3.04 3.49 7.95 11.42 1.80 1.79 1.68 1.05 0.72 . RAW COAL 100. 18.3 4.13 2.28 1.82 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.260 21.3 3.4 2.47 0.47 1.95 78.7 21.2 4.51 2.81 1.54 1.270 28.5 3.5 2.46 0.48 1.93 71.5 23.0 4.72 3.04 1.51 1.290 43.0 4.0 2.56 0.58 1.92 57.0 27.5 5.22 3.62 1.41 1.400 76.3 7.6 2.90 0.91 1.88 23.7 49.0 7.87 6.84 0.8? 1.600 84.5 8.7 3.00 1.02 1.88 15.5 65.2 9.90 9.38 0.26 CALC. RAW COAL 100.0 17.4 4.07 2.31 1.63 ANAL. RAW COAL 100.0 17.7 3.91 2.11 1.76 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 6.9 1.0 2.05 0.28 1.77 93.1 22.6 3.82 2*03 1.75 1.300 19.3 2.7 2.19 0.38 1.80 80.7 25.5 4.06 2.28 1.74 1.350 49.6 4.0 2.43 0.58 1.85 50.4 37.9 4.95 3.22 1.65 1.400 60.3 5.4 2.63 0.73 1.90 39.7 44.9 5.33 3.70 1.52 1.600 72.3 8.1 2.81 0.99 1.80 27.7 55.0 6.02 4.31 1.62 ANAL. RAW COAL SAMPLE 31 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PVR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.270 1.280 1.290 1.400 1.600 25.8 39.3 56.8 80.4 87.6 3.8 4.5 4.7 6.4 7.4 0.96 0.94 1.04 1.00 1.06 0.28 0.31 0.31 0.41 0.43 0.62 0.59 0.48 0.52 0.61 74.2 60.7 43.2 19.6 12.4 20.4 23.6 31.1 55.9 77.6 1.51 1.65 1.80 2.89 3.56 0.98 1.12 1.44 2.40 3.41 0.54 0.54 0.67 0.72 0.21 L. RAW COAL 100.0 16.1 1.37 0.80 0.56 SIZE 3/8 INCH X 14 MESH SP.GRAV CUM.WT. ASH 1.270 34.6 3.7 1.280 49.8 3.9 1.290 57.0 4.0 1.400 82.6 5.9 1.600 86.9 6.7 CALC. RAW COAL 100.0 14.4 ANAL. RAW COAL 100.0 15.1 FLOAT FRACTION ,88 0. .88 ,89 0, .99 l. .02 i ,?l l .40 PYR.S 0.34 0.34 0.34 0.43 0.48 0.84 0.85 0.54 0.54 0.55 0.55 0.54 0.49 0.53 SINK FRACTION ASH TOT.S PYR.S 65.4 20.1 50.2 24.9 43.0 28.2 17.4 54.9 13.1 65.8 1.38 1.53 1.62 2.26 2.43 1.10 1.33 1.50 2.76 3.21 ORG.S 0.46 0.43 0.40 0.21 0.17 SIZE 14 MESH X 100 MESH SP.GRAV. CUM.WT. ASH 1.270 17.6 3.1 1.290 29.9 2.1 1.340 64.6 3.9 1.400 73.1 4.7 1.600 80.3 6.6 L. RAW COAL 100.0 20.0 FLOAT FRACTION 0.90 0.84 0.94 0.98 1.07 1.76 PYR.S 0. 18 0.15 0.23 0.29 0.43 1.09 0.64 0.62 0.61 0.58 0.52 0.62 UM.WT. ASH 82.4 23.6 70.1 27.6 35.4 49.4 26.9 61.6 19.7 74.6 SINK FRACTION TOT.S PYR.S 1.94 2.15 3.26 3.88 4.57 1.28 1.49 2.66 3.26 3.78 0.62 0.6? 0.64 0.73 1.03 SAMPLE 32 1 1/2 INCH X FLOAT FRACTION SINK FRACTION P.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.275 18.5 3.1 3.02 0.32 2.66 81.5 16.7 5.50 3.39 2.06 1.285 32.0 3.7 3.03 0.32 2.66 68.0 19.1 5.99 4.00 1.94 1.310 47.1 4.9 3.05 0.38 2.62 52.9 22.5 6.81 4.99 1.77 1.400 83.0 7.8 3.14 0.53 2.50 17.0 45.4 14.32 14.00 0.56 1.600 91.0 9.2 3.26 0.85 2.17 9.0 64.8 23.04 22.74 2.17 . RAW COAL 100. 14.2 5.04 2.82 2.17 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV i . CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.275 22.7 3.1 3.05 0.33 2.69 77.3 16.2 5.14 2.82 2.19 1.285 32.7 3.6 3.08 0.39 2.66 67.3 17.9 5.43 3.17 2.13 1.310 46.5 4.3 3.11 0.43 2.64 53.5 21.0 6.01 3.85 2.01 1.400 81.5 7.6 3.16 0.61 2.48 18.5 37.9 11.30 9.51 1.52 1.600 90.8 9.1 3.29 0.78 2.43 9.2 53.8 18.25 16.84 1.05 CALC. RAW COAL 100.0 13.2 4.66 2.26 2.31 ANAL. RAW COAL 100.0 13.7 5.17 2.83 2.30 SP.GRAV. 1.280 1.300 1.350 1.400 1.600 CUM.WT. 13.7 32.8 61.7 65.7 83.6 2.5 2.7 3.8 5.5 8.1 SIZE 14 MESH X 100 MESH FLOAT FRACTION TOT.S PYR.S ORG.S CUI" ANAL. RAM COAL 100.0 2.60 2.86 2.96 3.03 3.10 4.61 0.24 0.26 0.43 0.49 0.72 2.51 2.33 2.56 2.48 2.48 2.28 2.02 86.3 17.7 67.2 21.9 38.3 34.6 34.3 34.9 16.4 53.8 SINK FRACTION TOT.S PYR.S 4.93 5.46 7.27 7.64 12.31 2.87 3.61- 5.86 6.38 11.63 ORG.S 1.97 1.76 1.28 1.14 0.69 SIZE 1 1/2 INCH X FLOAT FRACTION 1.290 1.310 1.330 1.400 1.60C 22.6 30.1 48.0 7-0*9 78.0 4.1 4.6 4.7 7.8 8.3 1.18 1.20 1.25 1.32 1.46 PYR.S 0.35 0.27 0.26 0.49 0.52 ORG.S 0.82 0.90 0.98 0.79 0.93 SINK FRACTION ASH TOT.S PYR.S 77.4 28.5 69.9 30.9 52.0 39.9 29.1 60.0 22.0 75.1 1.86 1.93 2.13 2.66 2.60 1.45 1.60 2.07 2.93 3.61 ORG.S 0.38 0.30 0.02 -0.28 -1.12 ANAL. RAW COAL 100. 1.71 1.20 0.48 SIZE 3/8 INCH X 14 MESH FLOAT FRACTIUN SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.290 41.3 4.6 1.17 0.27 0.88 58.7 31.4 2.06 1.03 1.01 1.310 53.9 5.1 1.21 0.30 0.88 46.1 38.2 2.26 1.20 1.04 1.330 62.3 5.7 1.25 0.36 0.87 37.7 44.6 2.42 1.31 1.09 1.400 71.7 6.7 1.31 0.40 0.89 28.3 54.9 2.65 1.50 1.12 1.600 79.4 8.0 1.37 0.43 0.92 20.6 67.8 2.93 1.80 I. 10 CALC. RAH COAL 100. 20.3 1.69 0.71 0.95 ANAL. RAW COAL 100.0 20.8 1.67 1.22 0.44 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 38.3 3.5 1.09 0.50 0.58 61.7 33.3 2.03 1.55 0.47 1.300 53.9 2.7 0.98 0.43 0.54 46.1 44.3 2.48 1.99 0.47 1.350 64.1 4.7 1.15 0.61 0.53 35.9 52.6 2.60 2.11 0.47 1-400 67.3 5.7 1.18 0.64 0.52 32.7 55.? 2.68 2.20 0.49 1.600 77.0 7.2 1.23 0.72 0.55 23.0 71.1 2.98 2.59 0.38 ANAL. RAW COAL SAMPLE 34 SIZF 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.300 12.8 4.9 1.86 0.35 1.51 87.2 19.3 3.60 2.55 1.02 1.320 26.4 6.6 2.08 0.65 1.4? 73.6 21.4 3.85 2.85 0.96 1.350 54.3 7.5 2.22 0.64 1.58 45.7 29.4 4.76 4.21 0.49 1.400 69.6 8.8 2.32 0.92 1.38 30.4 37.4 5.81 5.36 0.39 1.600 85.8 10.0 2.70 1.54 1.15 14.2 62.8 7.49 6.68 0.66 ANAL. RAW COAL SIZE 3/8 INCH X 14 MFSH SP.GRAV CUM.WT. ASH 1.300 58.7 7.7 1.320 66.2 8.0 1.350 75.0 8.6 1.400 81.4 9.1 1.600 87.9 9.9 CALC. RAW COAL 100.0 15.7 ANAL. RAW COAL 100.0 15.6 FLOAT FRACTION TOT.S 2.35 7.35 2.42 2.57 2.76 3.36 3.27 PYR.S 0.67 0.70 0.82 0.91 1.18 1.88 2.24 ORG.S 1.65 1.62 1.58 1.59 1.56 1.46 1.02 CUM.WT. ASH 41.3 27.1 33.8 30.8 25.0 37.0 18.6 44.6 12.1 57.8 SINK FRACTION TOT.S PYR.S 4.81 5.35 6.20 7.06 7.76 3.60 4.19 5.07 6.14 6.99 ORG.S 1.18 1.13 1.10 0.87 0.71 SIZF 14 MFSH X 100 MESH SP.GRAV. CUM.WT. ASH 1.280 25.7 3.5 1.300 36.7 4.5 1.350 56.3 7.2 1.400 58.6 7.3 1.600 69.6 10. iL. RAW COAL 100.0 27.2 FLOAT FRACTION TOT.S PYR.S 1.63 1.75 1.96 2.02 2.31 3.39 0.44 0.61 0.82 0.84 1.34 2.21 ORG.S 1.18 1.13 1.13 1.17 0.95 1.16 CUM.WT. ASH 74.3 35.4 63.3 40.4 43.7 53.0 41.4 55.4 30.4 66.6 SINK FRACTION TOT.S PYR.S 4.00 4.34 5.23 5.33 5.86 2.82 3.14 4.00 4.15 4.20 ORG.S 1.15 1.18 1.20 1.15 1.64 SAMPLE 35 SIZE 1 1/2 INCH X FLOAT FRACT! [ON SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.28< 1.300 1.340 1.400 1.600 20.6 28.8 53.5 73.9 89.0 4.6 4.9 5.9 7.3 9.1 2.30 2.32 2.63 3.03 3.71 0.38 0.42 0.66 1.17 1.93 1.90 1.89 1.97 1.83 1.73 79.4 71.2 46.5 26.1 11.0 15.3 16.4 21.4 29.5 45.5 4.92 5.21 6.39 8.20 9.80 3.18 3.48 4.83 6.65 8.02 1.60 1.57 1.30 1.18 1.09 L. RAW COAL 100.0 13.1 4.38 2.60 1.66 SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.286 1.300 1.340 1.400 1.600 21.5 35.1 63.3 79.5 90.2 3.8 4.4 5.3 6.3 7.8 2.57 2.69 2.71 2.99 3.49 0.29 0.34 0.55 0.86 1.37 2.27 2.34 2.14 2.10 2.08 78.5 64.9 36.7 20.5 9.8 14.1 16.0 23.3 33.6 49.6 4.95 5.38 7.42 10.04 13.14 3.05 3.60 5.75 8.66 12.46 1.82 1.69 1.53 1.19 0.45 CALC. RAW COAL ANAL. RAW COAL 100.0 100.0 11.9 12.0 4.44 4.55 2.46 2.64 1.92 1.80 SIZE 14 MESH X 100 MESH FLOAT FRACTION SINK FRACTIC IN SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.280 15.0 1.4 2.04 0.18 1.85 85.0 21.0 4.85 3.22 1.53 1.300 39.4 2.5 2.15 0.22 1.91 60.6 28.2 5.91 4.41 1.37 1.350 53.3 3.7 2.28 0.35 1.90 46.7 34.5 6.88 5.51 1.21 1.400 67.0 4.9 2.48 0.56 1.88 33.0 44.9 8.39 7.23 0.97 1.600 82.7 6.9 2.94 0.93 1.91 17.3 71.6 11.55 11.51 0.00 L. RAW COAL 100.0 18.1 4.43 2.76 1.58 SAMPLE 36 SIZE 1 1/2 INCH X FLOAT FRACT] ION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.310 15.5 7.4 2.36 0.75 1.56 84.5 21.2 5.58 3.77 1.75 1.330 34.5 7.9 2.50 0.84 1.65 65.5 25.0 6.44 4.60 1.76 1.350 47.9 8.5 2.64 1.03 1.59 52.1 28.8 7.32 5.39 1.84 1.400 69.2 10.3 2.82 1.29 1.48 30.8 38.9 10.16 7.82 2.26 1.600 83.3 12.1 3.28 1.79 1.43 16.7 54.0 14.06 10.83 3.17 ANAL. RAM COAL SIZE 3/8 INCH X 14 MESH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.310 1.330 1.350 1.400 1.600 24.2 34.9 56.8 72.9 84.2 6.9 7.5 8.5 9.4 10.8 2.42 2.50 2.66 2.83 3.20 0.72 0.78 0.93 1.09 1.50 1.67 1.68 1.69 1.70 1.65 75.8 65.1 43.2 27.1 15.8 19.6 21.4 27.1 35.7 46.8 5.71 6.20 7.87 10.50 14.01 4.29 4.84 6.70 9.70 13.69 1.31 1.25 1.02 0.59 0.06 CALC. RAW COAL ANAL. RAW CCAL 100.0 100.0 16.5 17.5 4.91 5.25 3.42 3.45 1.40 1.74 SIZE 14 MESH X 100 MESH 1.280 1.300 1.350 1.400 1.600 15.1 30.2 55.8 65.4 76.4- 3.3 4.1 6.1 7.2 9.1 FLOAT FRACTION TOT.S PYR.S 1.85 1.97 2.41 2.45 2.91 0.48 0.48 0.76 0.88 1.28 1.35 1.46 1.62 1.53 1.57 84.9 25.2 69.8 29.6 44.2 41.8 34.6 49.7 23.6 63.3 SINK FRACTION TOT.S PYR.S 5.01 5.64 7.21 8.46 9.77 3.30 3.90 5.53 6.63 8.02 ORG.S 1.59 1.59 1.46 1.59 1.49 ANAL. RAW COAL 100. 4.53 2.87 1.55 SAMPLE 37 SIZE 1 1/2 INCH X FLOAT FRACTION SINK FRACTION SP.GRAV CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.! 1.290 12.8 5.0 3.08 1.14 1.92 87.2 21.9 5.66 3.72 1.77 1.320 36.3 6.5 3.42 1.44 1.92 63.7 27.2 6.42 4.50 1.72 1.325 57.0 7.5 3.78 1.73 1.99 43.0 35.9 7.38 5.59 1.52 1.400 74.5 9.1 4.05 2.06 l.ao 25.5 SO. 7 9.07 7.28 1.76 1.600 82.0 10. 1 4.37 2.41 1.88 18.0 63.4 9.70 7.85 1.38 iL. RAW COAL 100.0 19.7 5.33 3.39 1.79 SIZE 3/8 INCH FLOAT FRACTION SINK FRACTION SP.GRAV. CUM.WT. ASH TOT.S PYR.S ORG.S CUM.WT. ASH TOT.S PYR.S ORG.: 1.290 20.7 4.5 2.94 1.11 1.81 79.3 17.6 5.25 3.50 1.68 1.320 34.0 5.3 3.11 1.26 1.83 66.0 19.8 5.62 3.91 1.65 1.355 64.2 6.6 3.42 1.52 1.88 35.8 29.7 7.19 5.68 1.41 1.400 79.7 7.6 3.65 1.72 1.90 20.3 43.4 9.17 8.07 0.96 1.600 88.0 8.8 3.91 1.96 1.91 12.0 59.1 11.08 10.67 0.22 CALC. RAW COAL 100.0 14.9 4.77 3.01 1.71 ANAL. RAW COAL 100.0 14.7 4.84 3.00 1.74 SIZE 14 MESH X 100 MESH SP.GRAV CUM.WT. ASH 1.280 19.1 2.2 1.300 40.2 3.9 1.350 58.3 4.4 1.400 69.1 5.9 1.600 77.4 6.9 IL. RAW COAL 100.0 20.4 FLOAT FRACTION TOT.S PYR.S 2.35 2.80 2.99 3.28 3.53 4.91 0.57 0.93 1.08 1.35 1.83 3.11 ORG.S 1.76 1.83 1.86 1.87 1.61 1.64 SINK FRACTION UM.WT. ASH TOT.S PYR.S org.: 80.9 24.7 5.51 3.71 1.61 59.8 31.5 6.33 4.58 1.51 41.7 42.8 7.59 5.95 1.33 30.9 52.8 8.56 7.05 1.13 22.6 66.6 9.64 7.49 1.74 Illinois State Geological Survey Circular 462 44 p., 3 figs., 15 tables, app., 3500 cop., 1971 Urbana, Illinois 61801 Printed by Authority of State of Illinois CIRCULAR 462 ILLINOIS STATE GEOLOGICAL SURVEY URBANA 61801