CO-CARBONIZATION OF A SOLVENT-REFINED COAL WITH AMERICAN COALS.

Twelve USA coals ranging in rank from sub-bituminous to low volatile bituminous were co-carbonized at 1273 K with levels of a solvent-refined coal (SRC) ranging from 0 to 15 wt%. Addition of the SRC enhanced the development of plasticity and the formation of granular anisotropic texture, resulting in improvement in the quality of the cokes produced. The magnitude of the increase in Gieseler fluidity and the amount of intermediate texture formed were dependent mainly on the original fluidity of the coals. The ability of the SRC to improve coke strength increased with increasing rank. For low rank bituminous coals, in addition to a small increase in coke strength, the addition of the SRC led to a decrease in reactivity.