Hydrometallurgical recovery of copper from complex mixtures of end-of-life shredded ICT products

被引：48
作者：
Xiao, Yanping [1 ]
Yang, Yongxiang [2 ]
van den Berg, John [2 ]
Sietsma, Jilt [2 ]
Agterhuis, Hanneke [3 ]
Visser, Geert [3 ]
Bol, Derk [1 ]
机构：
[1] Mat Innovat Inst M2i, NL-2628 CD Delft, Netherlands
[2] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands
[3] Van Gansewinkel Grp BV, Business Dev, NL-5657 DH Eindhoven, Netherlands
来源：
HYDROMETALLURGY | 2013年 / 140卷
关键词：
ICT scrap; Metal recovery; Selective leaching; Cu electrowinning; PRINTED-CIRCUIT BOARD;
D O I：
10.1016/j.hydromet.2013.09.012
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Hydrometallurgical recovery of copper from complex fine mixture scrap generated by shredding EoL (end-of-life) ICT (information and communications technology) products has been experimentally investigated. Tested leaching agents include sulphuric acid, ammonia-ammonium carbonate and ammonia-ammonium sulphate solutions, with or without addition of hydrogen peroxide. The results show that ammonia leaching has high selectivity for copper, and it could serve as a first step to recover the copper content in the e-waste, which is one of the major valuable metals. The feasibility of direct electrowinning of copper from the ammonia leaching solution with about 20 g/l Cu was investigated. Copper with 98.9% purity was obtained, with a current efficiency of 50-70% and the major impurity of Pb. The product purity could be improved with solution purification and adoption of inert anode. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：128 / 134
页数：7
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