摘要：The document locks the terms of raw material. This terms are to assure understanding among the individual working-fields of hard-coal-mining industries, such as exploration, mining technology, coal conversation and utilisation.#,,#
摘要：This International Standard specifies the method for determining the grindability index of hard coal using the Hardgrove machine. It also specifies the pro-cedure for calibrating the test machine and for pre-paring the standard reference coal samples.
note:1) 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.
摘要：Testing of carbon materials; determination of coking value; binding and impregnating materialsEssais des matériaux de carbone; détermination du residu de la cokéfaction; liants et agents d'imprégnation