Study of New Technology for Comprehensive Utilization of Polymetallic Copper Slag from Zinc Hydrometallurgy
Received:November 19, 2013   Revised:November 22, 2013   Accepted:November 25, 2013      Published Online:May 23, 2014
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DOI:10.3969/j.issn.1007-7545.2014.06.006
KeyWord:zinc hydrometallurgy; polymetallic copper slag; rare metal; comprehensive utilization; new technology
              
AuthorInstitution
CHEN Wen-bo 西北矿冶研究院冶金新材料研究所
HAN Xiaolong 西北矿冶研究院冶金新材料研究所
ZHAO Hong 西北矿冶研究院冶金新材料研究所
Lu Xing-wu 西北矿冶研究院冶金新材料研究所
LI Shou-rong 西北矿冶研究院冶金新材料研究所
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Abstract:
      The technology conditions for comprehensive utilization of polymetallic copper slag from zinc hydrometallurgy were investigated. Under the conditions including L/S=3∶1, three-stage countercurrent leaching at 80 ℃ for 4 h, the leaching rate of zinc, cadmium, indium, and germanium is 95% above, and 98% above copper can be recovered by the process of extraction, stripping, and electrodeposition after its enrichment into high-concentration copper slag. Cadmium is recovered by zinc powder replacement. The other rare metals elements can be recovered after enrichment. Main metals recovery can reach 90% above, and up to 75% rare metals are recovered.
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