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| copper anode slime; copper powder replacement; tellurium; selenium; silver; replacement rate |
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Received:March 11, 2014
Revised:March 22, 2014
Accepted:March 24, 2014
Published Online:August 21, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.09.014 |
| KeyWord:low concentration of copper anode slime pressure leaching liquid; Copper powder replacement; Tellurium; Selenium; Silver; Replacement rate |
| Author | Institution |
| ZhONG Qing-Shen |
金川集团股份有限公司 科技开发部 |
| HE Xiu-Zhen |
金川集团股份有限公司 贵金属研究中心 |
| LIU Yu-Qiang |
金川集团股份有限公司 |
| MA Yu-Tian |
金川集团股份有限公司贵金属冶炼厂 |
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| Abstract: |
| Silver, selenium, tellurium and copper were comprehensively recovered from copper anode slime pressure leaching solution with low concentrations by copper powder replacement. The results show that silver slag bearing mainly silver, selenium slag bearing mainly selenium, and tellurium slag bearing very low silver and selenium are obtained by controlling replacement reaction temperature of ≤45 ℃, ≤75 ℃, and ≥95 ℃, respectively. When tellurium concentration in lixivium is very low, tellurium replacement rate is 99% above with tellurium content in tellurium slag of 36%~43% by the processes of silver and selenium replacement with copper powder, copper removal by recrystallization, and tellurium replacement with copper powder from copper removal mother liquor. |
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