金川镍阳极液硫化除铜的研究  

Study of Removing Copper from Nickel Anode Electrolyte by Sulfide Method

作　　者：石玉臣[1,2] 赵中伟[1,2] 陈爱良[1] 霍广生[1] 李洪桂[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]稀有金属冶金与材料制备湖南省重点实验室,长沙410083

出　　处：《有色金属（冶炼部分）》2010年第2期9-12,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展计划支持项目(2007CB13603);国家863高技术研究发展计划项目(2006AA06Z122)

摘　　要：结合已有的热力学数据,对采用硫化法镍阳极液中除铜过程进行了热力学平衡计算,计算了除铜终点各离子的平衡浓度,绘制出了298.15 K时体系中除铜终点logcMe-logcS图和c-pH图。计算表明,采用硫化法可以成功将镍阳极液中铜和部分铅、锌除去。对所绘的热力学平衡图分析表明,随着总硫浓度的增加,铜、铅、锌、镍依次沉淀;在酸性条件下,改变pH对除铜深度影响不大,但控制适当的pH有利于得到铜镍比较高的渣;此外,适当增加镍电解液中铜含量、降低镍电解液中镍含量有利于提高渣中的铜镍比。除铜实验表明,采用硫化法除铜可以得到含铜0.40 mg/L、铅3.94 mg/L、锌1.61 mg/L的除铜后液。The thermodynamic equilibrium of removing copper from nickel anode electrolyte by sulfide method was calculated according to the known thermodynamic data and the logcMe-logcS and c-pH diagrams for nickel anode electrolyte system were drawn at 298.15 K.The results show that total copper,part of lead and zinc can be removed from nickel anode electrolyte by sulfide method.In addition,increasing copper concentration,reducing nickel concentration and controlling adequacy pH are beneficial to the removing process of copper and getting a higher Cu/Ni slag.The results of verification experiments demonstrate that the concentration of copper,lead and zinc can be decreased to 0.40 mg/L,3.94 mg/L,1.61 mg/L by sulfide technic,respectively.

关 键 词：镍阳极液 硫化法 除铜 热力学 

分 类 号：TQ021.2[化学工程]