Aktivní norma | Vydána: 15.05.2023

ASTM D388-23

Standard Classification of Coals by Rank

Dostupné jazyky: Anglicky

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Podrobné informace

Označení: ASTM D388-23

Datum vydání: 15.05.2023

Stran: 8

Země: Americká technická norma

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Anotace

This specification covers the classification of coals by rank, that is, according to their degree of metamorphism, or progressive alteration, in the natural series from lignite to anthracite. These coals are mainly composed of vitrinite. The classification shall be based on gradational properties that depend on the degree of metamorphism. The classification shall also be according to fixed carbon and gross calorific value calculated to the mineral-matter-free basis.

Keywords:
anthracite, bituminous, coal, lignite, rank,, ICS Number Code 75.160.10 (Solid fuels)

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