基于高浓度煤泥水的柱式主再浮试验研究  

Experimental study on primary and secondary column flotation based on high concentration coal slurry

作　　者：彭耀丽[1,2] 谢广元[1,2] 蒋兆桂 倪超[1] 蒋富歌[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116 [3]中铁资源集团有限公司,北京100039

出　　处：《煤炭学报》2013年第A01期195-200,共6页Journal of China Coal Society

基　　金：高等学校博士学科点专项科研基金资助项目(20110095120021);中央高校基本科研业务费专项资金资助项目(2010QNB08)

摘　　要：分析了目前重介质选煤工艺下选煤厂入浮煤泥水浓度升高对浮选柱分选作业带来的不利影响,提出采用柱式主再浮工艺解决高浓度煤泥水浮选的思想,通过试验验证了柱式主再浮工艺的可行性。柱式主再浮工艺通过主浮保质、再浮保量可保证浮选效果,解决了浓度高煤泥水浮选效果差的问题。通过正交试验研究影响柱式主再浮工艺分选效果的工艺参数,对精煤产率的影响程度大小为主浮压力>再浮压力>浓度;对精煤灰分的影响程度大小为主浮压力>浓度>再浮压力;对浮选完善指标影响程度大小为主浮压力>再浮压力>浓度。Adverse effect on separation operation of flotation column as the concentration of coal slurry increase in current dense medium coal cleaning process was analyzed in this study.A new thought to separate high concentration coal slurry by primary and secondary column flotation process was put forward,and its feasibility was verified by experiments.The whole flotation effect was warranted through maintaining quality by primary column flotation and maintaining quantity by secondary column flotation,which can be used to overcome the separation problems of high concentration coal slurry.In addition,the processing parameters,which influence on the separating effects,were studied through orthogonal experiments.The order of influence degree on clean coal yield is primary flotation pressure secondary flotation pressure concentration,on flotation clean coal ash is primary flotation pressure concentration secondary flotation pressure,and on flotation perfection index is primary flotation pressure secondary flotation pressure concentration.

关 键 词：高浓度 煤泥水 浮选柱 主再浮 工艺参数 

分 类 号：TD922[矿业工程—选矿]