煤矸石综合利用工艺探索

煤矸石是采煤和选煤过程中排放的固体废物,约占原煤的10%~20%。目前中国煤矸石综合利用率较低,为62.2%左右,造成煤矸石堆积量日益增多。大量煤矸石长期堆放不仅占用土地,而且造成环境污染,甚至威胁到矿区居民生命财产安全。结合国内外煤矸石综合利用情况,探索煤矸石的综合利用工艺。结合煤矸石减排技术、煤矸石直接利用技术、煤矸石改性利用技术、煤矸石燃烧后利用以及矸石山自燃热能利用技术,大胆提出了几种煤矸石综合利用工艺设想,希望能对国内煤矸石综合利用企业起到抛砖引玉之效。 Coal gangue account for about 10 percent to 20 percent of raw coal's mass.The comprehensive utilization rate of domestic coal gangue is around 62.2 percent.To better utilize coal gangue,based on the analysis of coal gangue emission reduction technologies,direct and modified use technologies,utilization of heat energy and residue generated by coal gangue burning technologies,provide several coal gangue comprehensive utilization methods