从电子脚镀锡铜针中回收锡和铜  

Recovery of Tin and Copper from Electronic Foot Tin Plated Copper Needle

作　　者：陈亮 王勇 熊振坤 陈斌 

机构地区：[1]广东清远云铜有色金属有限公司,广东清远511545

出　　处：《有色金属（冶炼部分）》2013年第9期15-18,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：介绍了从电子脚镀锡铜针中回收锡和铜的工艺研究及生产实践。采用常温碱性电解脱锡，电解液无须加热循环流动，控制电流密度200A／m^2、槽电压0．2～0．4V，电解液含Sn8～15g／L、NaOH60～120g／L时，铜、锡的直收率分别达到99．7％和94．5％。脱锡铜针抛光处理后可以直接电解生产符合GB／T467--2010标准中Cu-CATH一1要求的阴极铜，电解条件：装填光亮铜针高出电解液面5cm以上，电流密度200A／m^2，槽电压0．7V，电解液含Cu45～50g／L、H2SO4 150～180g／L。The technical study and plant practice of recovery of tin and copper from electronic foot tin plated copper needle were introduced. Tin was separated by alkaline electrolysis at room temperature without heating and electrolyte circulating. The recovery rate of copper and tin is 99.7%and 94.5% respectively under the conditions including current density of 200 A/m2 , cell voltage of 0.2-0.4 V, electrolyte compo- sition of Sn of 8-15 g/L and NaOH of 60-120 g/L. Cathode copper according with the requirements of Cu-CATH-1 brand under GB/T467--2010 standards is directly electrolyzed from polished de-tinning cop- per needle under the electrolysis conditions including copper needle being 5 cm higher than electrolytic liq- uid level, current density of 200 A/m^2 , cell voltage of 0.7 V, electrolyte composition of Cu of 45%-50 g/L and H2SO4 of 150-180 g/L.

关 键 词：镀锡铜针 电解脱锡 电解 阴极铜 回收 

分 类 号：X705[环境科学与工程—环境工程] TF811[冶金工程—有色金属冶金]