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| Study on New Technology to Leach Copper from Selenium-Removed Residues of Copper Anode Slime |
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Received:July 07, 2016
Revised:July 07, 2016
Accepted:July 13, 2016
Published Online:November 17, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.12.004 |
| KeyWord:copper anode slime; selenium-removed residues; leaching copper; water leaching |
| Author | Institution |
| WU Wen-hua |
湖南稀土金属材料研究院 |
| LIU Ji-bo |
湖南稀土金属材料研究院 |
| TANG Jie-xiong |
湖南稀土金属材料研究院 |
| WANG Zhi-jian |
湖南稀土金属材料研究院 |
| SU Zheng-fu |
湖南稀土金属材料研究院 |
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| Abstract: |
| In order to ensure copper leaching rate and reduce leaching loss of Te, Ag, etc, acidic leaching was substituted by pre-leaching and water leaching under low stirring speed to leach copper from selenium-removed residues of copper anode slime. The effects of sodium chloride addition, stirring speed, and pre-leaching time on copper leaching rate were investigated. The results show that the optimum conditions include pre-leaching duration of 12 h in water with L/S=4, and then stirring for 2 hours at room temperature with one time theoretical amount of sodium chloride and stirring rate as low as 100 r/min. Under the above conditions, copper leaching rate of pilot test is 94%, tellurium loss is 3% below, with no loss of Ag, Bi, Sb, Pt, Pd, and Au. |
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