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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. Table 2: Characterization of different types of coal TYPE OF COAL SUB-TYPE FIXED CARBON VOLATILE CALORIFIC (%wt) MATTER (%wt) < 2% VALUE (MJ/kg) Anthracite Meta-anthracite over 98% Anthracite Semi-anthracite 86-92% 92-98% 2-6% 8-14% Bituminous Low-volatile 78-86% 14-22% Medium volatile 69-78% 22-31% High volatile A > 32.5 High volatile B High volatile C < 69% > 31% 30.2-32.5 26.7-30.2 Sub-bituminous A 24.4-26.7 < 69% > 31% 22.1-24.4 19.3-22.1 Lignite 14.6-19.3 < 69% > 31% <14.6

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. Table 2: Characterization of different types of coal TYPE OF COAL SUB-TYPE FIXED CARBON VOLATILE CALORIFIC (%wt) MATTER (%wt) < 2% VALUE (MJ/kg) Anthracite Meta-anthracite over 98% Anthracite Semi-anthracite 86-92% 92-98% 2-6% 8-14% Bituminous Low-volatile 78-86% 14-22% Medium volatile 69-78% 22-31% High volatile A > 32.5 High volatile B High volatile C < 69% > 31% 30.2-32.5 26.7-30.2 Sub-bituminous A 24.4-26.7 < 69% > 31% 22.1-24.4 19.3-22.1 Lignite 14.6-19.3 < 69% > 31% <14.6

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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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) < 2% VALUE (MJ/kg) Anthracite Meta-anthracite over 98% Anthracite 92-98% 2-6% Semi-anthracite 86-92% 8-14% Bituminous Low-volatile 78-86% 14-22% Medium volatile 69-78% High volatile A High volatile B High volatile C 22-31% > 32.5 < 69% > 31% 30.2-32.5 26.7-30.2 Sub-bituminous A 24.4-26.7 B. < 69% > 31% 22.1-24.4 19.3-22.1 Lignite 14.6-19.3 < 69% > 31% B. <14.6
Transcribed Image Text: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) < 2% VALUE (MJ/kg) Anthracite Meta-anthracite over 98% Anthracite 92-98% 2-6% Semi-anthracite 86-92% 8-14% Bituminous Low-volatile 78-86% 14-22% Medium volatile 69-78% High volatile A High volatile B High volatile C 22-31% > 32.5 < 69% > 31% 30.2-32.5 26.7-30.2 Sub-bituminous A 24.4-26.7 B. < 69% > 31% 22.1-24.4 19.3-22.1 Lignite 14.6-19.3 < 69% > 31% B. <14.6
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