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广西某金矿矿石为含金的石英脉,伴随多种金属硫化矿物。目前生产中,采用人工淘洗铅精矿的方法回收粗粒金,金流失比较严重,铅也没有得到充分回收。对原矿、生产中产品进行检测,并进行了摇床精矿、中矿及原矿的浮选-重选探索性试验。摇床精矿金品位为505.05 g/t、中矿品位为46.47 g/t,通过浮选,获得铅精矿中金品位分别为169g/t、36 g/t,作业回收率分别为28.62%、22.26%。原矿浮选-重选试验,获得金精矿金品位为3.53 g/t,铅精矿含金57g/t,硫精矿含金4.19 g/t,回收率分别为5.52%、37.34%、10.85%。表明浮选能富集细粒及嵌布于硫化矿中的金于硫化铅矿中,但粗颗粒金难以通过浮选富集,采用摇床重选也难以获得高品位金精矿。
A gold mine in Guangxi is a gold-bearing quartz vein with a variety of metal sulphide minerals. Current production, the use of artificial recovery of lead concentrate method of recovery of coarse gold, gold loss is more serious, lead has not been fully recovered. On the ore, the production of products for testing, and carried out shaker concentrate, ore and flotation - re-exploration test. The gold grade of shaker concentrate was 505.05 g / t, the ore grade was 46.47 g / t, and the gold grade of lead concentrate was 169 g / t and 36 g / t respectively by flotation, the recovery rates were 28.62% , 22.26%. In the flotation-re-election test, the gold grade of the gold concentrate was 3.53 g / t, the lead concentrate contained 57g / t and the sulfur concentrate contained 4.19 g / t, the recovery rates were 5.52%, 37.34% and 10.85 %. It shows that the flotation can enrich the fine particles and the gold embedded in the sulphide ore in the lead sulphide ore, but the coarse grained gold is difficult to be enriched by flotation, and it is difficult to obtain the high-grade gold concentrate by the shaking table reselection.