煤炭分类

[中文适用范围]： 本文件描述了一个简单的煤炭分类系统，提供 — 选择适当的 ISO 标准程序进行煤炭分析和测试的指南， — 煤炭在一些关键特性方面的国际比较， — 煤炭的描述性分类。 该系统适用于所有级别的煤炭，但需要注意某些类型煤炭的分类。 该系统可应用于多种具有代表性的煤样，只要说明了它们的确切性质。 此类样品包括钻孔岩心煤层剖面和复合样品、原煤（开采时）、洗选煤、类似等级和选定的指定尺寸部分的煤的混合物。 该系统提供了一个广泛的框架，可以在其中评估煤炭。 选择用于特定用途的煤炭需要详细的信息，以便能够预测煤炭在特定应用中的可能性能。 范围广泛的煤炭 ISO 分析和测试程序就是为了这个目的。 用于评估煤炭的适当程序的选择取决于预期用途。 [外文原描述]： This document describes a simple classification system for coals providing — guidance on the selection of the appropriate ISO standard procedures for the analyses and testing of coals, — international comparison of coals in terms of some key characteristics, — descriptive categorization of coals. The system is applicable to coals of all ranks, but care is required in relation to the classification of some types of coal. The system can be applied to a wide range of representative coal samples, provided their exact nature is stated. Such samples include bore-core seam sections and composite samples, raw (as-mined) coal, washed coal, blends of coals of similar rank and selected, specified size fractions. The system provides a broad framework within which coals can be assessed. The selection of coals for a specific use requires detailed information that enables the likely performance of a coal in a particular application to be anticipated. The wide-ranging list of ISO analyses and test procedures for coals serve this purpose. The selection of the appropriate procedures to be used in assessing a coal depends on the intended use.