Indian coals and lignite were subjected to TGA studies in an oxidizing atmosphere (natural flow of air) as well as in a nitrogen atmosphere. The catalytic effect of mineral matter on the combustion of coals was more predominant in bituminous coals containing 36 to 42 % volatile matter (VM) than of VM and oxygen contents of the coals. In comparison to the original coal, the depolymerized coal and the residue obtained from extractive disintegration or organosolvo-refining of coal under ambient pressure conditions showed higher rates of combustion at relatively lower temperatures. The depolymerization reaction enhanced the devolatilization of coal in an inert atmosphere, whereas the organosolvo-refining of coal decreased the same. The reasons for the enhancement in the reactivity for combustion of chemically and solvent pretreated coals are discussed. The process of recovery of solvent refined coal through extractive disintegration or depolymerization affords a super clean fuel having high calorific value and renders the combustion of the residual coal pollution free by recirculatory fluidized bed combustion. Several value added uses for super clean coal have been suggested.