浮选回收煤矸石中硫铁矿的可行性研究  

Study on feasibility of recovery of pyritic sulphur from coal refuse through flotation process

作　　者：石尚杰[1] 佟顺增[1] 刘向东[1] 张翠艳[1] 魏立勇[1] 

机构地区：[1]开滦(集团)有限责任公司,河北唐山063000

出　　处：《选煤技术》2016年第1期14-18,23,共6页Coal Preparation Technology

摘　　要：为实现河北蔚县单候矿煤矸石的资源化利用,在对煤矸石性质和目前分选技术分析的基础上,探索通过浮选从煤矸石中回收硫铁矿的可行性。试验结果表明：在煤矸石磨矿细度为60%、矿浆p H值在6~6.5之间、硫酸铜用量为500 g/t、丁基黄药用量为400 g/t、2#油用量为45 g/t的条件下,采用预先脱泥、一次粗选两次精选的浮选闭路试验流程,可获得产率为10.19%、硫含量为39.67%、回收率为82.50%的硫精矿;从工艺指标和工艺条件来看,通过浮选回收煤矸石中的硫铁矿可行。With an aim to turning the coal refuse at Danhou Coal Mine,Weixian,Hebei Province into a resource for utilization,on the basis of the analysis of the refuse and the separating technologies currently available,tests are made on the feasibility to recover pyritic sulphur from the refuse. Testing result indicates that,when treating a pre- deslimed feed using a closed- circuit flotation process composed of one rougher and 2- stage cleaner cells,a flotation concentrate with a yield of 10. 19%,a sulphur content of39. 67% and a recovery rate of 82. 50% can be obtained under the following conditions： fineness of ground refuse- 60%; p H of feed pulp- 6- 6. 5; dosage of copper sulphur- 500 g / t; dosage of butyl xanthate- 400 g / t; and dosage of 2#oil- 45 g / t. AS evidenced by separating result and technological indices,it is feasible to recover pyritic sulphur from refuse using flotation process.

关 键 词：煤矸石 浮选 硫铁矿 硫精矿 回收率 

分 类 号：TD849.5[矿业工程—煤矿开采]