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Forecasts of Chemical, Physical, and Utilization Properties of Coal for Technical and Economic Evaluation of Coal Seams.
NTIS: PB 233 428 :127 pages
A computerized moving average technique was developed to interpolate coal seam characteristics between sample points. The interpolative method coupled with multivariate regression analysis and simulation procedures was used to forecast coal properties not readily obtained from an analysis of drill core samples. Coal property forecasts were of two kinds: (1) specific mine property forecasts that are suitable for mine product control and yield a good approximation of the local variation along both the vertical and horizontal axes of the seam, and (2) regional estimates where much of the local seam variation is smoothed out, but the general trends are maintained. Forecasts of the volatile matter, ash, total sulfur, and the heating value for part of the Pittsburgh seam located in Ohio, Pennsylvania, and West Virginia were in good agreement with independent evaluation data. Spatial configuration for preparation characteristics, particularly, the effect of crushing on sulfur release, low- and high-temperature, carbonization properties, the hardgrove grindability index, the coal hardness index, gasification variables, and hydrogenation factors were constructed for the same area of the Pittsburgh seam. These forecasts may be developed from drill core data collected in the exploration phase of mining. The results are useful for mine design, economic analyses, energy forecasts, utilization studies, mine product control, and environmental control and programing.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 233 428
OH; PA; WV;
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division