Physical and Chemical Properties of Finely Ground De-Ashed Coal. Interim Report April 1984-March 1985

摘要

The report presents the results of a laboratory-scale program conducted to determine the physical and chemical properties, including gasification, of a finely ground de-ashed Pittsburgh No. 8 bituminous coal. Tests were conducted to isolate the effects of fine grinding from those due to fine grinding plus de-ashing. Tests were conducted on the parent coal, on fine-ground coal and after de-ashing by the Otisca T-process. The physical properties measured included: particle-size distribution, surface area, pore structure, true, particle and bulk densities, and fluidization characteristics. The chemical properties measured were ultimate and proximate analyses, free-swelling index, ash-fusion temperature, ash composition and fluorine content, and coal devolatilization and char gasification characteristics.