Recovery of copper and tin from stripping tin solution by electrodeposition  

作　　者：Bin Li De-An Pan Yu-Hui Jiang Jian-Jun Tian Shen-Gen Zhang Kun Zhang 

机构地区：[1]Institute for Advanced Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing [2]Beijing Nonferrous Metals and Rare Earth Research Institute

出　　处：《Rare Metals》2014年第3期353-357,共5页稀有金属（英文版）

基　　金：financially supported by National Hi-Tech R&D Program of China (No. 2012AA063202);National Key Project of Scientific and Technical Support Program of China (Nos. 2011BAE13B07, 2012BAC02B01, and 2011BAC10B02);the National Natural Science Foundation of China (Nos. 51174247 and 50972013);the Guangdong Province Science and Technology Project (No. 2010A030200003)

摘　　要：In this paper, the method of recycling copper and tin by constant-current and constant-voltage electrolysis from the stripping tin solution of tinned copper wastes was studied. The experimental results show that the elements could be deposited on the cathode in turn by different deposition potentials, therefore, the copper and tin were separated by constant-voltage electrolysis but not constant-current electrolysis. In this study, the influence of anode materials was also investigated. Graphite anode is stable without impurities dissolved into the stripping tin solution, while 316 stainless steel anode is dissolved into Fe2？and Fe3？as anodic corrosion, which could decrease the deposition efficiency of tin. The copper and tin in the stripping tin solution are separated orderly by electrodeposition at different voltages using the graphite anode. The recovery rate of copper is up to 100 % at 2.00 V, while that of tin is 80 % at 3.00 V.In this paper, the method of recycling copper and tin by constant-current and constant-voltage electrolysis from the stripping tin solution of tinned copper wastes was studied. The experimental results show that the elements could be deposited on the cathode in turn by different deposition potentials, therefore, the copper and tin were separated by constant-voltage electrolysis but not constant-current electrolysis. In this study, the influence of anode materials was also investigated. Graphite anode is stable without impurities dissolved into the stripping tin solution, while 316 stainless steel anode is dissolved into Fe2？and Fe3？as anodic corrosion, which could decrease the deposition efficiency of tin. The copper and tin in the stripping tin solution are separated orderly by electrodeposition at different voltages using the graphite anode. The recovery rate of copper is up to 100 % at 2.00 V, while that of tin is 80 % at 3.00 V.

关 键 词：ELECTRODEPOSITION COPPER TIN Stripping tinsolution 

分 类 号：X703[环境科学与工程—环境工程]