bituminous class

n
a class of rank consisting of high volatile C bituminous coal, high volatile B bituminous coal, high volatile A bituminous coal, medium volatile bituminous coal, and low volatile bituminous coal.

ASTM D121-09a Standard Terminology of Coal and Coke. 2014.

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  • high volatile A bituminous coal — n the rank of coal, within the bituminous class of the Classification D388, such that on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 31 % (or the fixed carbon content is less than 69 %), and its… …   Coke&Coal Terminology

  • high volatile B bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the moist, mineral matter free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 13 000 (30.24 Mj/kg) but …   Coke&Coal Terminology

  • high volatile C bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the moist, mineral matter free basis, the gross calorific value of the coal in British thermal units per pound is equal to or greater than 11 500 (26.75 Mj/kg)… …   Coke&Coal Terminology

  • low volatile bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 14 % but equal to or less than 22 % (or the fixed carbon content… …   Coke&Coal Terminology

  • medium volatile bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 22 % but equal to or less than 31 % (or the fixed carbon content… …   Coke&Coal Terminology

  • rank — n of coal, a classification designation that indicates the degree of metamorphism, or progressive alteration, from lignite to anthracite. • anthracite anthracitic class bituminous class high volatile A bituminous coal high volatile B bituminous… …   Coke&Coal Terminology

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