我厂在利用镍基合金废料生产电解镍的过程中,阳极液的净化,过去一直采用通氯气除铅。在通氯过程中采用纯碱液调整pH值,既增加碱耗,又使溶液中的钠离子增加,镍离子浓度相应下降,不利于镍钠比的平衡;生成的氯渣中夹带有镍,使镍的直接回收率降低;同时通氯除铅使铅在整个生产中形成闭路循环,严重地影响电镍的质量。为了解决这些问题,我们采用脂肪胺萃取除铅进行了试验。现介绍于下: I plant in the use of nickel-based alloy scrap electrolysis of nickel production process, the anolyte purification, the past has been through the chlorine in addition to lead. In the process of chlorine through the use of pure alkali solution to adjust the pH value, not only increase the alkali consumption, but also the solution of sodium ions increased, a corresponding decrease in nickel ion concentration is not conducive to the balance of nickel and sodium ratio; The direct recovery rate of nickel is reduced. At the same time, the removal of lead through chlorine leads to the formation of closed-circuit cycle of lead in the whole production, which seriously affects the quality of electro-nickel. In order to solve these problems, we used fatty amine extraction to remove lead. Now introduced in the next: