Technology Research Institute, Shenhua Shendong Coal Group Corporation Limited

针对煤矸石大量堆积占用大量土地且严重污染环境的问题,对神东矿区12个排矸场的煤矸石进行采样,在对煤矸石的化学成分、矿物组成、发热量等参数分析的基础上,对煤矸石进行分类综合利用。结果表明:神东矿区煤矸石化学成分以SiO2、Al2O3和Fe2O3为主,其中SiO2含量大于50%的煤矸石适合开发硅系列化工产品;Al2O3与SiO2含量之和大于70%,且Al2O3含量达到20%的煤矸石,可生产高附加值化工产品;高岭石含量大于50%的煤矸石适合煅烧高岭土;发热量达到5 000 kJ/kg以上的煤矸石,可以掺加煤泥、分选中煤后用于煤矸石发电。

According to large lands occupied for amount of coal refuse piled up and the serious pollution environment problems, coal refuse samples were collected from 12 coal refuse dumping sites in Shendong Mining Area. Based on the analysis on the chemical composition, mineral composition, calorific value and other paramet ers of the coal refuse, a classified comprehensive utlization was conducted on the coal refuse. The results showed that the chemical composition of the coal refuse in S hendong Mining Area were SiO2, Al2O3and Fe203mainly. Among those chemical compositions, the coal refuse with SiO2content over 50% would be suitable to develop silicon series chemical products, the Al2O3and SiO2contents were over 70% and the Al2O3content would be 20%, the coal refuse could produce the chemical products with a high added value. The coal refuse with kaolinite content over 50% could be suitably applied to the calcination of kaoline.The coal refuse with a calorific value over 5 000 kJ /kg could be mixed with slime or middlings for the coal refuse-fired power generation.

国家高技术研究发展计划(863计划)资助项目(2102AA062203)；