可磨性是煤加工利用过程中的一个重要指标，可磨性指数与煤的破碎机理、煤粒破碎后的粒度分布均有关系。
The grindability of coal is an important parameter in pulverized coal utilization, and the HGI(Hardgrove Grindability Index) is relevant to the coal pulverization and the particle size distribution.
两种可磨性较差的煤混配起来的煤种可能变得较易磨细，选择合适的质量配比比例可以提高混煤的可磨性指数。
Moreover, a certain ratio of blending coal could improve HGI, which implied more facility of the pulverization of coals.
试验结果表明，经过哈氏可磨性测定仪后，各煤种的工业分析都发生了不同程度的变化，而煤粉破碎后的粒度分布取决于煤种的煤化程度，而与煤种的可磨性指数相关性较小。
The results(indicated) that the approximate analysis of the pulverized coal changed to different degrees, and the particle size distribution mainly depended on the coal rank but not the HGI.
试验结果表明，经过哈氏可磨性测定仪后，各煤种的工业分析都发生了不同程度的变化，而煤粉破碎后的粒度分布取决于煤种的煤化程度，而与煤种的可磨性指数相关性较小。
The results(indicated) that the approximate analysis of the pulverized coal changed to different degrees, and the particle size distribution mainly depended on the coal rank but not the HGI.
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