Moreover, a certain ratio of blending coal could improve HGI, which implied more facility of the pulverization of coals.
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。
2
Some physical factors such as the macerals, the type, size and distribution of mineral matters and the microcosmic tectonics are very important for HGI.
煤的显微组分、矿物质类型、颗粒大小和分布以及煤种的显微构造等物理参数是决定煤可磨性能的重要因素。
3
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.