铜基钯镍退镀液中铜的再生利用  

Recycling of copper from striping solution containing copper,palladium and nickel

作　　者：王琪[1] 杨雨佳[1] 蒋昊[1] 黄红缨[1] 范义春[1] 周全法[1] 

机构地区：[1]江苏理工学院化学与环境工程学院,江苏常州213001

出　　处：《化工环保》2017年第3期352-356,共5页Environmental Protection of Chemical Industry

摘　　要：采用硫氰酸盐沉铜法回收铜基钯镍退镀液中的铜。沉铜的优化工艺条件为初始Cu^(2+)质量浓度3.84 g/L、Cu^(2+)与Na SCN及Na_2SO_3摩尔比1∶4∶0.6、沉铜反应温度30℃,陈化时间24 h,沉铜反应后退镀液中Cu^(2+)残留量仅为0.025 mg/L。在此条件下加入聚乙二醇1.5 g/L,并提高分散液温度至50℃,可制得平均粒径为0.472μm的CuSCN超细粉体。CuSCN粉体为类球形,为含α、β两种晶型的混晶。Copper was recovered from the striping solution containing copper, palladium and nickel by precipitation with thiocyanate. The optimum process conditions were as follows： initial Cu^2＋ mass concentration 3.84 g/L, mole ratio of Cu^2＋ to sodium thiocyanate and sodium sulfite 1 ： 4 ： 0.6, precipitation reaction temperature 30 ℃ and aging time 24 h. The residue amount of Cu^2＋ in the striping solution after reaction was only 0.025 mg/L. Under these conditions, CuSCN superfine powder with 0.472 μm of average particle size was prepared by adding 1.5 g/L PEG and rising temperature of the dispersion liquid to 50 ℃. The CuSCN superfine powder was ball-like partical with two crystal types of α and β.

关 键 词：退镀液 沉铜工艺 硫氰酸亚铜 超细粉体 铜回收 

分 类 号：X781.1[环境科学与工程—环境工程]