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.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2010年第12期2425-2430,共6页
The Chinese Journal of Nonferrous Metals
关键词
旋流电积
电镀污泥
铜
镍
cyclone electrowinning
electroplating sludge
copper
nickel
