The copper concentrate of a copper plant in Inner Mongolia had a high lead content,which not only af fected the quality of copper concentrate,but also wasted the lead resource.In order to make full use of the resources of copper mine,test research was made on the separate recovery of lead from the copper concentrate.By detailed condition tests,a combinatorial lead depressant of potassium dichromate + CMC was chosen to use in the test.Through the process of one roughing,one scavenging and two cleaning,a lead concentrate was obtained that contained 4.82％ of lead and 0.73％ of copper,and had a 79.86％ lead recovery.The copper loss was less than 1％ in the test.The research achieved a purpose to recovery various useful resources comprehensively,and had a certain reference value on comprehensive utilization for similar mine resources.%内蒙古某铜矿选矿厂铜精矿中铅含量较高,不仅影响了铜精矿的品质,还造成了铅资源的浪费,为充分利用该铜矿资源,进行了该铜精矿中分离回收铅的试验研究.经过详细的条件试验,最终确定采用铅组合抑制剂重铬酸钾+CMC,通过一粗一扫二精浮选工艺流程,获得了铅品位46.82％、含铜0.73％,铅回收率79.86％的铅精矿,同时保证了铜精矿中铜的损失率小于1％,达到综合回收的目的,对同类矿山资源的综合利用有一定的参考价值.
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