期刊
HYDROMETALLURGY
卷 156, 期 -, 页码 199-205出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hydromet.2015.06.011
关键词
Waste printed circuit boards; Alkali fusion process; Copper; Amphoteric metals
资金
- National Natural Science Foundation of China [51074190, 51234009]
- International Cooperation program of Ministry of Science & Technology of China [2014DFA90520]
An efficient alkali fusion-leaching-separation process is developed to recover metals in crushed metal enrichment (CME) which originated from waste printed circuit boards (PCBs). Impacts of fusion parameters on metals conversions were systematically investigated. In the fusion-leaching process, amphoteric metals such as tin, lead, zinc and aluminum in the CME were leached out, while leaving copper and precious metals in the residue. Subsequently, metals in solution were further extracted via precipitation processes, and metals in the residue were recovered using an add leaching-electrowinning process. Cathode copper, nano-Cu2O, CaSnO3/CaSn(OH)(6) crystal and mixture of PbS-ZnS were obtained as the final products of this process. By optimizing the experimental conditions, recoveries of 98.66% for Cu, 91.08% for Sn, 91.25% for Zn, 78.78% for Pb were achieved, respectively. And all precious metals were enriched in the final residue with grades of Au 613 g/t, and Ag 2157 g/t. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据