磁选—反浮选回收某铜冶炼渣选铜尾矿中的铁

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

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。

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.