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| High Efficiency Recovery of Silver from Slag of Zinc Hydrometallurgy |
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Received:October 29, 2015
Revised:November 04, 2015
Accepted:November 05, 2015
Published Online:May 12, 2016
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| DOI：10.3969/j.issn.1007-7545.2016.04.012 |
| KeyWord:zinc hydrometallurgy; slag; silver; chloride salt; leaching |
| Author | Institution |
| GAO Lixia |
广州有色金属研究院 |
| DAI Zilin |
广州有色金属研究院 |
| Li Guiying |
广州有色金属研究院 |
| Zhang Kuifang |
广州有色金属研究院 |
| Liu Zhiqiang |
广州有色金属研究院 |
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| Abstract: |
| To address difficulty to recover silver from zinc slag with high content of calcium sulfate, silver leaching system was screened. “NaCl H2SO4 NaClO3” is the optimum system for silver leaching. Leaching rate of silver and lead is 97% and 91% respectively under the optimum conditions including acid-leaching slag of 50 g, NaCl concentration of 300 g/L, ratio of liquid to solid of 5︰1, H2SO4 dosage of 6 g, NaClO3 dosage of 3 g, reaction temperature of 90 ℃, and leaching time of 3 h. |
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