榆林长焰煤中矿物质和有机组分的可磨性研究

摘要

Through the coal quality analysis of screen overflow and screen underflow at different grinding durations,the grindability difference of mineral substance and organic components in low rank coal was researched,and the comparison research of grindability of inertinite and vitrinite in organic components was done.The results showed that the grindability of mineral substance in low rank coal was better than the organic components,the pulverized coal mineral substance was easier to be grinded to the fine particles compared with the organic components;the grindability of inertinite was better than vitrinite,which means that the inertinite is easier to be grinded to pulverized coal fine particles.%通过对不同磨煤时间的煤粉筛上物和筛下物的煤质分析,研究了低阶煤中矿物质和有机组分的可磨性差异,并对有机组分中惰质组和镜质组的可磨性进行对比研究.研究结果表明:低阶煤中矿物质的可磨性优于有机组分,煤粉矿物质较有机组分更易磨细成细颗粒;有机组分中惰质组的可磨性优于镜质组,即惰质组更易磨细成细颗粒煤粉.