Recovery of Cu and Zn from waste printed circuit boards using super-gravity separation
Recovery of Cu and Zn from waste printed circuit boards using super-gravity separation
复制标题
利用超重力分离从废弃印刷电路板中回收铜和锌。
DOI：
10.1016/j.wasman.2018.06.022
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发表时间：
2018-08-01
期刊：
影响因子：
8.1
通讯作者：
Guo, Zhancheng
中科院分区：
文献类型：
--
作者：
Meng, Long;Zhong, Yiwei;Guo, Zhancheng
With technological innovation and intense marketing, more and more electric and electronic equipment wastes (e-wastes) are being generated. Printed circuit boards (PCBs) are fundamental components of electronic wastes, which consist of both valuable metals and hazardous materials. An efficient method to recycle metals is an important measure to eliminate or avoid heavy metal hazard and realize resource recovery. In this research, super-gravity separation achieved by high temperature centrifugation was used to recover copper and zinc from waste PCBs. At an optimized temperature of 1300 degrees C and a gravity coefficient of 1000, the total recovery values of Cu, Zn, Pb, and Sn were 93.23%, 80.86%, 94.54%, and 97.67%, respectively, in the whole separation process. By combining appropriate hydrometallurgy and super-gravity separation of metals or alloys, this clean and efficient process provides a novel way to recycle valuable metals and effectively prevent environmental pollution from PCBs. A large-scale experimental apparatus was designed for handling large volume of WPCBs. (C) 2018 Elsevier Ltd. All rights reserved.
