The Classification Of Coal

The classification of coal and the classification indicators are as follows:

Anthracite: Anthracite is divided into 3 subcategories, with the numbers 01, 02, and 03. The "0" in the number indicates anthracite, and the last digit represents the degree of coalification; a smaller number indicates a higher degree of coalification.

Bituminous coal: Bituminous coal is divided into 12 coal categories (including lean coal, poor lean coal, thin coal, coking coal, fat coal, 1/3 coking coal, gas fat coal, gas coal, 1/2 medium-caking coal, weak-caking coal, non-caking coal, and long-flame coal), with 24 subcategories. The tens digit (1~4) in the number indicates the degree of coalification, with smaller numbers indicating higher coalification; the ones digit (1~6) indicates the degree of caking, with larger numbers indicating stronger caking.

Brown coal: Brown coal is divided into 2 subcategories, with codes 51 and 52. The "5" in the code represents brown coal, and the last digit indicates the degree of coalification; a smaller number indicates a lower degree of coalification.

Power coal: Simply put, power coal refers to coal used as a power source, primarily utilizing its heat-generating properties for fuel purposes, such as heating, power generation, and building material manufacturing. Of course, it can also serve as raw material coal for modern coal chemical industries Generally, in a narrow sense, it refers to coal used for thermal power generation (which is also the primary meaning of "power coal"). As per the aforementioned national standards, thermal coal mainly includes lignite, long-flame coal, non-caking coal, lean coal, gas coal, and a small amount of anthracite.

Coking Coal: Coking coal (including lean coal, thin coal, coking coal, fat coal, 1/3 coking coal, gas fat coal, gas coal, and 1/2 medium-volatile coal, all of which are types of bituminous coal) is mainly used for coke production. It is typically classified by use into metallurgical coke (including blast furnace coke, foundry coke, and ferroalloy coke), gasification coke, and coke for the production of calcium carbide.