复杂铜硫多金属矿综合利用试验研究

Experimental Study on Comprehensive Utilization of Complex Copper-Sulfur Polymetallic Ore

针对国内某铜硫多金属矿,含铜0.45%,硫33.65%、金1.45g/t、银41.02g/t,试验采用优选浮选工艺,铜回路采用一粗二扫二精的浮选流程并使用组合捕收剂硫脲+MOS-2的方法,获得铜精矿铜品位20.39%、铜回收率81.00%;硫回路采用一粗二扫的浮选流程并使用调整剂硫酸+捕收剂丁基黄药,通过闭路试验得到硫精矿硫品位49.68%、硫回收率96.24%,伴生金、银综合回收率分别达到91.71%、95.17%。试验指标较好,对该资源开发利用具有借鉴意义。

For a domestic copper-sulfur polymetallic ore containing 0.45%Cu,33.65%S,1.45g/t Au and 41.02g/t Ag,an selective flotation flowsheet consisting of one roughing,two scavengings and two cleanings was adopted in the copper circuit.A copper concentrate with Cu grade of 20.39%and Cu recovery of 81.00%was obtained by using thiourea+MOS-2as a combined collector.The sulfur loop adopts the flotation flowsheet of one roughing and two scavengings and uses regulator sulfuric acid and collector butyl xanthate.Through the closed-circuit tests,S grade of sulfur concentrate is 49.68%and S recovery is 96.24%,and the comprehensive recovery of associated gold and silver is 91.71%and 95.17%respectively.The test index is good,which has reference significance for the development and utilization of this resource.