某含金铜硫矿浮选分离试验研究

Experimental Study on Comprehensive Recovery of Cu,Au and S from a Goldbearing Copper Sulfide Ore

为了合理开发利用某含金硫化铜矿资源,开展了工艺矿物学和选矿综合利用试验研究。研究显示,矿石中主要有价元素铜品位为0.57%,伴生元素金品位为1.56 g/t;铜主要以黄铜矿的形式存在,金主要以自然金和银金矿的形式赋存,其载体矿物多为黄铁矿和黄铜矿。以YZ-05为捕收剂,采用“铜金硫混合浮选—铜硫分离—硫精矿再磨—金硫分离”的分选试验流程,闭路试验得到了铜精矿、金精矿和硫精矿,其中铜精矿Cu品位为19.57%、回收率88.7%,Au品位为36.93 g/t、回收率65.5%,Ag品位为61.00 g/t,回收率46.70%;金精矿Au品位42.27 g/t、回收率21.1%金综合回收率为86.6%;硫精矿中S品位为48.24%,回收率为69.70%。该研究为此矿石的综合回收利用提供了技术依据。

Research in process mineralogy and comprehensive mineral processing experiments were conducted in order to rationally develop and utilize a gold-bearing copper sulfide ore.It showed that the grade of the main valuable element copper in the ore was 0.57%,and that of the associated element gold was 1.56 g/t.Copper mainly existed in the form of chalcopyrite,and gold mainly exists in the form of native gold and electrum,the carrier minerals of gold were mostly pyrite and chalcopyrite.The process of copper gold sulfur mixed flotation,copper sulfur separation,sulfur concentrate regrinding,and gold sulfur separation was used with YZ-05 as the collector.Copper concentrate with Cu grade of 19.57%and recovery of 88.7%,Au grade of 36.93 g/t and recovery of 65.5%,Ag grade of 61.00 g/t and recovery of 46.70%was obtained.In the gold concentrate,Au grade was 42.27 g/t,and the recovery was 21.1%.The total recovery of gold was 86.6%.In the sulfur concentrate,S grade was 48.24%and the recovery was 69.70%.The study provided a technical basis for the comprehensive recovery and utilization of such ore.