|
| Study on Oxygen Pressure Leaching Process of Copper Sulfide Concentrate |
|
Received:May 08, 2024
Revised:May 29, 2024
Accepted:May 30, 2024
Published Online:September 11, 2024
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2024.10.004 |
| KeyWord:copper hydrometallurgy; copper sulfide concentrate; oxygen pressure leaching |
| Author | Institution |
| TONG Yizhe |
长沙有色冶金设计研究院有限公司 |
| LIU Ziliang |
长沙有色冶金设计研究院有限公司 |
| WANG Henghui |
长沙有色冶金设计研究院有限公司 |
| MENG Fancheng |
中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 |
|
| Hits: 1529 |
| Download times: 1680 |
| Abstract: |
| Address to the by-product sulfuric acid in the pyrometallurgical smelting process of copper sulfide concentrate is difficult to be applied on a large scale in the unsalable area of sulfuric acid, the oxygen pressure leaching process of copper sulfide concentrate was studied. The composition, phase and occurrence state of valuable elements of a copper sulfide concentrate raw material were analyzed. The feasibility of oxygen pressure leaching of copper sulfide concentrate was analyzed theoretically. The leaching effects of one-stage oxygen pressure leaching and two-stage oxygen pressure leaching process were studied. The results show that the copper leaching rate is 90.49%—92.25% by two-stage countercurrent oxygen pressure leaching. In the first stage, the temperature is 135—140 ℃, the total pressure is 1.3—1.4 MPa, the time is 2—2.5 h, the amount of dispersant is 4‰—5‰, and the amount of precipitation agent is 2.5%—3%. In the second stage, the temperature is 165—170 ℃, the total pressure is 1.4—1.5 MPa, the time is 2.5—3 h, the amount of dispersant is 6‰—7‰, and the amount of precipitation agent is 3%—3.5%. The leaching solution from the first stage contains copper 90.78—92.34 g/L, iron 10.81—13.84 g/L and H2SO4 28—30 g/L, which can be sent to subsequent iron removal purification–electrowinning to produce electrocopper. |
| Close |
|
|
|