BS ISO 5074:2015规定了测定硬煤可磨性指数的方法 使用Hardgrove机器。它还规定了校准试验机的程序，以及 制备标准参考煤样。注:在本国际标准中，术语“硬煤”用于表示煤的成熟度或等级 煤化顺序与煤的物理性质无关。交叉引用:ISO 13909ISO 18283ASTM D409购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 5074:2015 specifies the method for determining the grindability index of hard coal using the Hardgrove machine. It also specifies the procedure for calibrating the test machine and for preparing the standard reference coal samples.NOTE In this International Standard, the term "hard coal" is used as an indication of maturity or rank in the coalification sequence and is not related to the physical properties of the coal.Cross References:ISO 13909ISO 18283ASTM D409All current amendments available at time of purchase are included with the purchase of this document.