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| Recovery of High Grade Copper Concentrate from Purification Slag of Zinc Hydrometallurgy |
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Received:January 18, 2013
Revised:January 29, 2013
Accepted:January 30, 2013
Published Online:September 29, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.10.002 |
| KeyWord:zinc hydrometallurgy; purification slag; acid leaching; washing; copper concentrate |
| Author | Institution |
| guoxinling |
巴彦淖尔紫金有色金属有限公司 |
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| Abstract: |
| The purification slag from zinc hydrometallurgy was first leached at high temperature. Valuable metals of zinc, cobalt and cadmium entered into lixivium, and copper remained in slag. Copper concentrate was obtained from this copper slag by high acidic leaching and washing process. The results show that copper concentrate with copper grade of 65% above and less than 2% of zinc is obtained under the optimum high temperature leaching conditions including ratio of solid to liquid of （6~7）∶1, original acid concentration of 100 g/L, pH value of terminal point of 3.0, temperature of 80~85 ℃, and time of 8 h and the optimum high acidic washing conditions including ratio of solid to liquid of （4~6）∶1, terminal acidity of 50 g/L, temperature of 70~87 ℃, and time of 60~90 min. |
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