内蒙古某铅锌矿石选矿试验

内蒙古某铅锌矿石铅、锌品位分别为1.62%、5.98%，伴生银品位为19.60 g/t，主要铅锌矿物方铅矿、闪锌矿嵌布粒度均较粗。为确定该矿石的开发利用工艺流程，进行了选矿试验研究。结果表明，在磨矿细度为-0.074 mm占75%的情况下，采用1粗2扫-粗精矿再磨后2次精选选铅、选铅尾矿1粗4精2扫选锌，中矿顺序返回流程处理该矿石，最终可获得铅品位为56.65%、铅回收率为83.85%、含银536.55 g/t、银回收率为65.70%的铅精矿，以及锌品位为47.74%、锌回收率为90.61%、含银44.66 g/t、银回收率为25.86%的锌精矿。试验确定的工艺流程可作为该矿石的合理开发利用流程。

Beneficiation Tests on a Lead-zinc Mineral in Inner Mongolia

A lead-zinc ore in Inner Mongolia with zinc of 1.62%,and lead of 5.98%,contains associated silver grade is 19.60 g/t,in which main galena,sphalerite are coarsely disseminated.In order to realize the high efficient exploitation and utilization of the resources，beneficiation tests of the ore were made.Results showed that under the grinding fineness of 75% -0.074 mm,lead concentrate with lead grade of 56.65% and lead recovery of 83.85%,silver grade of 536.55 g/t and silver recovery of 65.70%,and zinc concentrate with zinc grade of 47.74%,zinc recovery rate of 90.61% and silver grade of 44.66 g/t and silver recovery of 25.86% were obtained respectively by the process of lead concentration by one roughing，two scavenging and coarse concentrate regrinding,then two cleaning,zinc concentration by one roughing，four cleaning and two scavenging，and the rest middlings back to the flow-sheet in turn.The process test above is the available process of the ore.