(中南大学 冶金科学与工程学院，长沙 410083)
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。
关键字: 旋流电积；电镀污泥；铜；镍
cyclone electrowinning
（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China）
Abstract: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.
Key words: cyclone electrowinning; electroplating sludge; copper; nickel
