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Standard Grade Coal - Heat Value

Standard grades coal and heating values

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Approximate Lower Heating values of standard grades of coal:

Coal GradeHeating Value
(Btu/lb)(kJ/kg)
Anthracite 12910 30080
Semi-Anthracite 13770 32084
Low-volatile bituminous 14340 33412
Medium-volatile bituminous 13840 32247
High-volatile bituminous A 13090 30499
High-volatile bituminous B 12130 28262
High-volatile bituminous C 10750 25047
Sub-bituminous B 9150 21319
Sub-bituminous C 8940 20830
Lignite 6900 16077
  • Anthracite Coal is very shiny, hard black coal, high carbon content and energy density, repels moisture, for domestic industrial uses, including smokeless fuel
  • Bituminous Coal is softer and shiny, moisture content is 8 -20%, possible for coking coals, volatile matter from 16% - 40%, can be used for thermal or metallurgical applications
  • Sub-bituminous Coal is soft and black with energy density lower than bituminous coal, most common type for electricity generation
  • Lignite Coal is light brown with high moisture content and low energy density, used mainly for electricity generation
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