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| Extraction of Silver and Lead from Slag of Zinc Hydrometallurgy |
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Received:November 16, 2017
Revised:November 20, 2017
Accepted:November 21, 2017
Published Online:April 16, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.05.007 |
| KeyWord:slag of zinc hydrometallurgy; lead; silver; sodium chloride; leaching |
| Author | Institution |
| GAO Lixia |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| DAI Zilin |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| ZHANG Kuifang |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| LIU Zhiqiang |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
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| Abstract: |
| Chloride leaching was applied to extract Ag and Pb from acid-leaching residues of zinc hydrometallurgy slag after roasting and acid leaching. The effects of NaCl concentration, L/S, leaching temperature, and leaching time on leaching of Ag and Pb were investigated. The results show that leaching rate of Ag and Pb is 94.7% and 81% respectively under the optimum conditions including NaCl concentration of 250 g/L, L/S=5︰1, leaching temperature of 80~100 ℃, and leaching time of 3~4 h. The optimum chloride recycle leaching time is three-cycle, after which silver content in leaching solution is 139 mg/L, leaching rate of Ag and Pb is 93.84% and 81.23% respectively. |
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