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A coal has 10% moisture, 39% volatile matter and 41% ash. Calculate % volatile matter and % fixed carbon on (dry, mineral-matter free) dmmf basis

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A coal has 10% moisture, 39% volatile matter and 41% ash. Calculate % volatile matter and % fixed carbon on (dry, mineral-matter free) dmmf basis and determine the ASTM Group to which the coal belongs I Table 2: Characterization of different types of coal TYPE OF COAL SUB-TYPE FIXED CARBON VOLATILE CALORIFIC (%wt) MATTER (%wt) VALUE (MJ/kg) Anthracite Meta-anthracite over 98% 32.5 High volatile B 31% 30.2-32.5 High volatilec 26.7-30.2 Sub-bituminous 24.4-26.7 B 31% 22.1-24.4 19.3-22.1 Lignite A 14,6-19.3 31% B 32.5 High volatile B 31% 30.2-32.5 High volatilec 26.7-30.2 Sub-bituminous 24.4-26.7 B 31% 22.1-24.4 19.3-22.1 Lignite A 14,6-19.3 31% B

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