GB/T 20475.4-2012
ActiveClassification for content of harmful elements in coal - Part 4：Mercury
煤中有害元素含量分级 第4部分：汞
Application Summary AI generated
This standard specifies the classification levels for mercury content in coal, defining thresholds for low, medium, and high mercury grades. It is applied in coal mining, preparation, and utilization industries to guide the selection, blending, and quality assessment of coal, particularly for power generation and industrial boilers where mercury emissions are regulated. The standard supports environmental monitoring and pollution control by enabling consistent evaluation of mercury hazards in coal products.
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