Abstract
The flotation of smelting copper slags in Yunnan has been studied in this paper. The influences of grinding fineness, different kinds of collectors and the dosage of sodium sulfide, GZT, which influence the flotation results, are tested. The experimental results show that in the first stage of roughing, a good flotation result is obtained, the concentrate copper grade reaches 24.12% and the flotation recovery rate reaches 82.98%, when the grade of copper slags is about 2.1%, under the circumstances that the grinding fineness is 85.6%, the amount of Y-89 is 400g/t, the amount of sodium sulfide is 2500g/t, and the amount of GZT is 80g/t.
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