刚果（金）某细粒复杂铜矿石浮选试验

刚果（金）某细粒复杂铜矿石铜品位为2.69%，主要铜矿物为斑铜矿，大部分以细粒及微细粒不规则状嵌生在脉石矿物中，黄铜矿、孔雀石少量。矿石中次生硫化铜、原生硫化铜和氧化铜分别占总铜的76.21%、13.38%和7.43%。为确定该矿石资源的高效开发利用方案，进行了选矿试验。研究结果表明，矿石在磨矿细度为-0.074 mm占85.86%的情况下，以BKD-1为捕收剂、Na₂S为氧化铜矿物的活化剂、碳酸钠为矿浆pH调整剂，采用3粗2精2扫、扫选精矿合并1次扫精选流程处理，获得了铜品位为38.52%、铜回收率为97.52%的铜精矿。

Flotation Experiment of a Fineness Complex Copper Ore from Congo

A fineness complex copper ore with copper grade of 2. 69%,mainly contains bornite,a little chalcopyrite and malachite from D. R. Congo. Bornite is disseminated in gangue with the fine and microfine of irregular shape. The proportion of the secondary copper sulfide,native copper sulfide and copper oxide in total copper are 76. 21%,13. 38% and 7. 43%,respec-tively. In order to get the way of the effective development and utilization of the mineral resources,the mineral processing tests were carried out. The results show that copper concentrate with copper grade is 38. 52% and recovery is 97. 52% with grinding fineness of -0. 074 mm is 85. 86%,BKD-1 as collector,Na2 S as activator for copper oxide,Na2 CO3 as pH regulator,by flow-sheet of three roughing,two cleaning,two scavenging and scavenging cleaning on scavenging concentrate process.