从粗硫酸镍溶液中选择性萃取回收铜的研究

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英文篇名：Selective Extraction and Recovery of Copper from Crude Nickel Sulfate Solution 作者：裴晓东 ; 钱有军 英文作者：Pei Xiaodong;Qian Youjun;Sinosteel Anhui Tianyuan Technology Co., Ltd.; 关键词：粗硫酸镍溶液 ; 溶剂萃取 ; Lix984N ; 铜 英文关键词：Crude nickel sulfate solution;;Solvent extraction;;Lix984N;;Copper 中文刊名：金属矿山 英文刊名：Metal Mine 机构：中钢集团安徽天源科技股份有限公司; 出版日期：2019-06-15 出版单位：金属矿山 年：2019 期：06 语种：中文; 页：110-113 页数：4 CN：34-1055/TD ISSN：1001-1250 分类号：TF811;X758

摘要

采用Lix984N—煤油—H2SO4萃取体系,从粗硫酸镍溶液中选择性回收铜,研究了初始pH值、萃取剂体积分数、相比O/A等对铜萃取的影响。结果表明,在初始pH值为2.4、萃取剂体积分数为25%、相比O/A为1∶1的条件下,经一级萃取即可获得铜萃取率为98.19%,镍萃取率仅为0.68%的良好指标。以H2SO4浓度为180 g/L溶液作反萃剂,在相比O/A为1∶1条件下经一级反萃,铜的反萃率为99.05%。铜以CuSO4溶液的形式回收,可以作为制备硫酸铜晶体或电积制备电解铜的原料。
        Copper was selectively recovered from crude nickel sulphate solution by extraction system of Lix984 N-Kerosene-H2 SO4. The effects of initial pH value,Lix984 N volume fraction and phase ratio O/A on selective extraction of copper were studied. The results show that single-stage extraction at initial pH of 2.4,volume concentration of the extractant is 25%and phase ratio(O/A)of 1∶1, the extraction rate of copper is up to 98.19% and the extraction rate of nickel only at 0.68%. After that, a single-stage stripping with 180 g/L sulfuric acid and phase ratio of 1∶1 resulted in the stripping rate of copper up to99.05%. Copper is recovered in the form of CuSO4 solution and can be used as raw material for preparation of copper sulfate crystals or electrowinning of electrolytic copper.

引文

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