青海某铅锌金银多金属矿综合回收试验研究

Experimental research on comprehensive recovery in a lead- zinc- gold- silver polymetallic mine in Qinghai

针对青海某铅锌金银多金属矿矿石性质,采用浮选—尾矿氰化浸出流程进行了试验研究。其结果表明:在最佳试验条件下,浮选闭路流程获得的硫化铅精矿铅品位45.05%,氧化铅锌混合精矿铅+锌品位49.02%,铅总回收率80.10%,锌总回收率54.22%;浮选尾矿再进行氰化浸出,金总回收率为73.29%,银总回收率为79.99%;试验指标较好,矿产资源得到了综合回收。

According to the property of ores from a lead - zinc - gold - silver polymetallic mine in Qinghai, the paper carried out experimental study on a flotation -cyanidation of tailings process. The results show that under opti- mal conditions, a closed circuit flowsheet can obtain a lead sulfide concentrate with lead grade of 45.05 %, a mixed concentrate of lead and zinc oxide with the grade of zinc plus lead of 49.02 % ,total recovery of lead is 80.10 % ,and total total ered. recovery is 54.22 % ; cyanidation leaching of tailings after flotation leads to total gold recovery of 73.29 %, silver recovery of 79.99 %. The test indicates good index and the mineral resources get comprehensively recov-