Coal mill can be divided into coarse powder coal mill and fine coal mill used widely in coal milling industry. Oil, Electric Power, Coal, Natural Gas, Petrochemical Metal . Energy methodology specification including derivatives methodology, oil methodology, coal methodology, natural gas methodology by Platts.
Metallurgical coal differs from thermal coal, which is used for energy and heating, by its carbon content and its caking ability. Caking refers to the coal's ability to be converted into coke, a pure form of carbon that can be used in basic oxygen furnaces.