云南某铜钼多金属矿选矿工艺试验

为合理回收云南某含铜、钼平均品位分别为0.52%、0.011%的低品位难分选铜钼多金属矿，在矿石性质研究的基础上，进行了选矿工艺试验研究。试验结果表明：在磨矿细度为-0.074 mm 57.81%、捕收剂OL-2用量为80 g/t、抑制剂TL-1用量为300 g/t的最优条件下，铜钼混和粗选通过粗磨抛尾、粗精矿再磨、1粗2精3扫；在浮选调整剂水玻璃用量为1 204.7 g/t、氟硅酸钠用量为680.2 g/t的最佳条件下，铜钼分离浮选采用1粗4精1扫的选矿工艺流程；最终获得了铜品位为25.85%、铜回收率为87.729%、含钼0.033%的铜精矿，钼品位为46.35%、钼回收率为76.35%的钼精矿；试验综合指标较好，为该铜矿高效开发利用铜、钼资源提供了科学依据及技术支撑。

Experiment on Mineral Processing of a Copper-molybdenum Deposit in Yunnan Province

The valuable elements such as copper,molybdenum are occurred in the researched copper deposit with 0.52% and 0.011%,which characterized by low grade and difficult separation.For reasonable recovery of copper,molybdenum of Cu-Mo polymetallic deposit in Yunnan Province,the benefication process experiment was conducted,based on the ore properties.Experimental results show that the grinding fineness of 57.81% -0.074 mm,collector dosage (OL-2) 80 g/t,lime dosage (TL-1) of 300 g/t in cleaning optimal conditions,the roughing experiment-process of coarse grinding-discarding tailing,regrinding of rough concentrate,once roughing,twice concentrate and three-times molybdenum cleaning has determined,by using the sodium sulfide (1 204.7 g/t) as flotation refulator,sodium fluosilicate (680.2 g/t) as combined depressant.According to the separation flotation of once roughing,four-times concentrate and once cleaning,the copper concentrate with copper grade of 25.85%,recovery of 87.729% and molybdenum grade of 0.033% has got.In addition,the molybdenum concentrate with grade of 46.35%,recovery of 76.35% has obtained.Finally,this author hold that the well comprehensive index can provides the scientific basis and technology support for effective development and utilization of copper-molybdenum ore in Pulang copper deposit.