GB/T 189-1997
AbolishedClassification standard for size fractions of coal
煤炭粒度分级
Application Summary AI generated
This standard specifies the classification of coal based on particle size, defining specific size fractions such as lump coal, nut coal, and fines. It is applied in the mining, processing, and trading of coal to ensure consistent sizing for industrial use, combustion efficiency, and equipment compatibility. The standard is used by coal producers, power plants, and metallurgical industries for quality control and contractual specifications.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.