采用旋流电积技术从电镀污泥中回收铜和镍  

Recovery of copper and nickel from electroplating sludge by cyclone electrowinning

作　　者：郭学益[1] 石文堂[1] 李栋[1] 田庆华[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2010年第12期2425-2430,共6页The Chinese Journal of Nonferrous Metals

摘　　要：以电镀废水处理过程中产出的电镀污泥为研究对象,采用旋流电积技术从电镀污泥中选择性回收铜和镍,并研究旋流电积过程中Cu2+和Ni2+以及杂质离子的电积行为。结果表明:旋流电积技术可以从高杂质含量的低铜浸出液中直接生产电积铜,产品质量达到GB/T467—1997中Cu-CATH-2牌号标准阴极铜的要求,铜直收率达到99%以上;铜电积后液经除铬后,仍采用该技术从低镍溶液中直接生产电积镍,化学成分达到GB/T6516—1997中Ni9990牌号电积镍的要求,镍直收率达到93%以上。与传统电积技术相比,旋流电积技术具有选择性强、电流效率高和产品质量好等优点。The copper and nickel from electroplating sludge were selectively recovered by cyclone electrowinning technology,and the electrowinning behaviors of Cu2＋,Ni2＋ and other metal ions in the process were investigated. The results indicate that the electrolytic copper is electrodeposited from a leaching solution with high impurities and low copper content by cyclone electrowinning and meets the requirements of the standard GB/T467—1997,and more than 99% copper is recovered. After the removal of chromium,the liquor with low nickel content is applied to nickel cyclone electrowinning,and the product meets the requirements of the standard GB/T6516—1997 （Ni9990）,and more than 93% nickel is recovered. Compared to the traditional electrowinning,the cyclone electrowinning shows the advantages of high selectivity of metals,high current efficiency and high purity of electrolytic product.

关 键 词：旋流电积 电镀污泥 铜 镍 

分 类 号：X781.1[环境科学与工程—环境工程] TF803.27[冶金工程—有色金属冶金]