磁选—反浮选回收某铜冶炼渣选铜尾矿中的铁

为了回收某铜冶炼渣中的铁, 在工艺矿物学研究基础上, 进行了磨矿—弱磁选—反浮选技术研究。研究结果表明, 样品中Fe含量高达47.14%, 主要赋存于磁铁矿和含铁硅酸盐中, 分布率分别为53.01%、44.38%。在磨矿细度-0.030 mm占95.31%时, 采用弱磁选—反浮选工艺, 可获得产率35.51%、TFe品位62.71%、铁回收率47.03%的铁精矿; 尾矿可作为水泥铁质调整料销售。最终实现铜渣中铁金属的综合回收及无尾排放。 

Iron Recovery from Tailings of the Smelting Slag after Copper Flotation with Magnetic Separation-reverse Flotation

In order to recover iron from tailings of the smelting slag after copper flotation, the separation process of grinding- low magnetic separation-reverse flotation was carried out based on the process mineralogy research results. The results showed that the iron content in the sample was as high as 47.14%. The distribution rate of iron in the magnetite form and in the iron-containing silicate form were 53.01% and 44.38%, respectively. When the grinding fineness was 95.31%(-0.030 mm) and the the separation process of grinding- low magnetic separation-reverse flotation was carried out, the iron concentrate was obtained with yield of 35.51%, TFe grade of 62.71% and iron recovery of 47.03%. Tailings can be sold as iron conditioner for cement industry. Finally, the comprehensive recovery and tailless discharge of iron in the smelting slag would be realized.