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| Oxidation Leaching Property of Polymetallic Complex Copper Ore |
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Received:October 20, 2017
Revised:November 02, 2017
Accepted:November 03, 2017
Published Online:March 20, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.04.004 |
| KeyWord:polymetallic complex copper ore; sulfuric acid; nitric acid; leaching; oxidation |
| Author | Institution |
| WANG Xiao-min |
青海大学 机械工程学院 青海省新型轻合金重点实验室 |
| DUO Jun |
青海大学 机械工程学院 青海省新型轻合金重点实验室 |
| LIU Huan-de |
西部矿业股份有限公司 青海省高原矿物加工工程与综合利用重点实验室 |
| ZHANG Ting-an |
东北大学 冶金学院 多金属共生矿生态化冶金教育部重点实验室 |
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| Abstract: |
| Oxidation leaching of polymetallic complex copper ore was studied applying sulfuric acid as leaching agent and nitric acid as oxidant. The results show that acid species and dosage, and oxidant type have obvious influences on leaching rate of polymetallic complex copper ore. Nitrate can leach copper, iron and zinc, but the according leaching rates do not rise with increase of nitrate dosage. Slow addition of nitric acid has better metal leaching effect. The enlarged experimental results show that leaching rate of Cu, Fe and Sb is all 98% above, leaching rate of As is about 60%, leaching rate of Pb and Zn is very low, and Ag is hardly leached by mixed acid solutions. The second filter residue is mainly composed of PbO1.44 and Pb2.5Sb1.5O6.75. |
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