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Thermal, Mechanical, and Physical Properties of Selected Bituminous Coals and Cokes.

Authors
Singer-JM; Tye-RP
Source
NTIS: PB 300 398 :37 pages
Link
NIOSHTIC No.
10000545
Abstract
Thermal, mechanical, and physical properties of virgin and heat- treated Pittsburgh seam coal were determined as part of a comprehensive study of combustion of monolithic coal block. The information was sought to help characterize pyrolysis and combustion processes in underground coal mine fires but should also prove useful in the study of in situ and surface coal gasifiers. Measured properties include thermal conductivity, specific heat, thermal expansion, density, compressive and tensile strength, porosity, and permeability. The transport property data were obtained (when feasible) in two mutually perpendicular directions of the anisotropic virgin coal material, and coal samples carbonized for 5 hours at temperatures of 350 deg c, 475 deg c, 500 deg c, 650 deg c, and 850 deg c. Other coals (Pocahontas No. 3, Sewell, and Illinois No. 6 Seams) were investigated for porosity and relative permeability. Interdependence among all properties was evident from the results; however, only a few correlations could be developed owing to inhomogeneity of coal material and specimen variation, which had the effect of reducing the accuracy of measurement and increasing data scatter.
Publication Date
19790101
Document Type
IH; Report of Investigations
Fiscal Year
1979
NTIS Accession No.
PB-300398
NTIS Price
A04
Identifying No.
RI 8364
NIOSH Division
PRC;
Source Name
NTIS: PB 300 398
State
IL;
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