Abstract

Abstract A set of 460 Indian coal samples has been used to establish correlations between volatile matter percentage yield (%VMdmmr) and compositional parameters, such as the weight percentages of Carbon (Cw), Hydrogen (Hw) and Oxygen (Ow); atomic ratios of the H/C, O/C and H/C; and atomic percentages of Carbon (Ca), Hydrogen (Ha) and Oxygen (Oa). Based on dry, mineral-matter-free (dmmf) basis wt% volatile matter is estimated according to the following expression. The standard error of estimate and correlation coefficients of the developed correlations [Eqs. (2), (4), (6) and (7)] are found to be 1.73; 0.93, 1.74; 0.93,1.74; 0.93 and 1.72; 0.93 (dmmf) basis respectively.

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