从湿法炼锌富铟渣中高效回收铟工艺研究

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关键词：湿法炼锌；富铟渣；正交试验；浸出；还原；溶剂萃取 中图分类号：TF84 文献标识码：A 文章编号：1008-9500（2025）05-0005-08 DOI： 10.3969/j.issn.1008-9500.2025.05.002

Abstract：Orthogonal experimental methodis used to recoverindium from zinc hydrometallurgical indium-enriched slag， andthe efects of diffrent process parameters （sulfuricacidconcentration，liquid-solidratioleaching temperature，and leaching time）on indium leaching eficiencyare investigated.Theresultsof theorthogonal experimentindicate thatthe influenceofvarious processparameters ontheeficiencyof indium leaching is intheorderofsulfuricacid concentration， liquid-solidratio，leaching time，and leaching temperature.Undertheoptimal leaching conditions，withasulfuricacid concentration of 2 mol/L，a liquid-solid ratio of 3，a leaching temperature of 80 A ，and a leaching time of 2 h， the indium leaching rate is 94.6% .Research has found that trivalent iron in leachate can aect the extraction of indium，therefore ironpowderisusedasareducing agent toreduce trivalentiron to divalent iron.Then，thesolvent extraction method is used to efficientlyand selectively separate andrecover indium.The extraction results show that using P2O04 reagent as the extractant， under the conditions of extraction ratio of 1：1 and extraction time of 15 min，the single-stage extraction rate of indium can exceed 90% ：

Keywords： zinc hydrometallurgy;indium-enriched slag; orthogonal experiment;leaching;reduction;solvent extraction

铟是一种高价值的稀有金属，广泛应用于电子、航空航天、医疗等领域[-2]。（剩余7899字）