云南某铜尾矿主要金属矿物有黄铜矿、黄铁矿、磁黄铁矿等，黄铜矿以原生硫化铜为主，金以裸露金和黄铜矿包裹金为主。为综合回收其中有价铜、金，进行了选矿试验。试样在磨矿细度为-200目占85%的情况下采用两次粗选、第二次粗选后扫选、两次精选、第二次精选后扫选、混精矿再磨至-325目占85%、粗选后扫选精矿再磨至-325目占85%、中矿循序返回流程处理。最终获得铜品位15.51%、回收率68.34%、产率1.41%的铜金精矿，其中的金品位19.93 g/t、回收率54.04%，银品位231.72 g/t、回收率41.89%。
The main metal minerals in Yunnan copper mine tailings are chalcopyrite, pyrite and pyrrhotite etc. The chalcopyrite is mainly primary copper sulfide, and gold is mainly bare gold and chalcopyrite coated gold. Mineral processing experiments were carried out for the comprehensive recovery of copper and gold. When 85%of the sample is within a grinding fineness of-200 mesh following grinding, it was subjected to the mineral separation. The process includes: two-time rough selection, one-time sweep selection, two-time selection twice, sweep selection once again. The resulting mixed concentrate was grinded again to such an extent that 85%of the concentrate had a grinding fineness of-325 mesh before the rough selection and then the selection were conducted once more. Copper containing in the final concentrate reached up to 15.51%with a recovery rate of 68.34%, gold 19.93 g/t with a recovery rate of 54.04%, silver 231.72 g/t with a recovery rate of 41.89%.
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