基于干基高位发热量的煤及煤矸石、矸石的分级研究

贵州省是产煤大省，年产量在1．4亿t以上，其中动力用煤在7000万t以上。由于电价比较低，煤炭在价格上和省外有较大差异，因此贵州省煤炭交易过程中，掺入煤矸石和矸石、各种非煤物质比较常见。利用煤及煤矸石、矸石按干基高位发热量的不同对其进行明确的分级命名，使煤炭生产经营中动力配煤行为更加规范、合理，有利于提高中国动力煤质量，并能有效节约宝贵的煤炭资源，对环境保护等将起到非常重要的作用。

Classification of coal, coal gangue and gangue based on dry basis gross calorific value

Guizhou is a great coal producing province in China,its coal annual output are more than 1.4x108 tons, and steam coal are over 7x107 tons. Due to lower electricity price, the coal price between Guizhou Province and other provinces has great differences. It ＂s common to see that large amount of coal gangue, gangue and other impurities mixing in commercial coal. To resolve this problem, precisely classify and name the coal, coal gangue and gangue based on their dry basis gross calorific value, regulate coal blending methods, improve steam coal quality. This method saves coal resources and protects environment.