镍电解工艺条件对杂质铅、锌、硒阴极析出行为的影响  

Effects of Nickel Electrolysis Process Conditions on Cathode Precipitation Behavior of Impurity Element Pb, Zn and Se

作　　者：王府[1] 冯建华[1] 卢晓锋 李亦婧[2] 郭勇[2] WANG Fu;FENG Jian-hua;LU Xiao-feng;LI Yi-jing;GUO Yong(Jinchuan Group Co.,Ltd.,Jinchang 737100,Gansu,China;Lanzhou Institute of Chemical and Physics,Chinese Academy of Sciences,Lanzhou 730030,China)

机构地区：[1]金川集团股份有限公司,甘肃金昌737100 [2]中国科学院兰州化学物理研究所,兰州730030

出　　处：《有色金属（冶炼部分）》2022年第10期36-42,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：甘肃省西部之光项目(E1YX0563)。

摘　　要：采用循环伏安法研究镍电解液中杂质铅、锌、硫、硒在镍电解精炼中的电化学行为。结果表明,铅、锌在阴极还原为金属单质,硫、硒则与镍离子生成Ni_(x)S_(y)及Ni_(x)S_(y)e。采用阴极极化法研究了电解工艺条件即温度、pH、氯离子浓度对杂质铅、锌、硫、硒的还原电势的影响。在工业生产中可根据杂质控制的需要来调整电解条件,从而减少部分杂质元素在阴极析出的总量。Electrochemical behavior of lead, zinc, sulfur and selenium impurities in nickel electrolyte in nickel electrorefining was studied by cyclic voltammetry.The results show that lead and zinc are reduced to metallic elements at the cathode, while sulfur and selenium form Ni_(x)S_(y)and Ni_(x)S_(y)ewith nickel ions.The cathodic polarization method was used to study the influence of electrolysis process conditions such as temperature, pH value and chloride ion concentration on reduction potential of impurities Pb, Zn, S and Se.In industrial production, electrolytic conditions can be adjusted according to the needs of impurity control so as to reduce total amount of some impurity elements precipitated in cathode.

关 键 词：镍电解 电化学 循环伏安曲线 阴极极化曲线 

分 类 号：TF815[冶金工程—有色金属冶金] O614.81[理学—无机化学]