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| Research and Application of Cu-Mn Slag Advanced Treatment Technology for Recovery of Metals |
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Received:June 10, 2021
Revised:June 23, 2021
Accepted:June 28, 2021
Published Online:September 18, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.10.017 |
| KeyWord:Cu-Mn slag; valuable metals; process technology; application |
| Author | Institution |
| WANG Yong-hao |
甘肃省生态环境厅 |
| ZHAO Tong |
金昌市生态环境局 |
| YUE Xin-yuan |
兰州金川新材料科技股份有限公司 |
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| Abstract: |
| Metal contents of Cu-Mn slag were analyzed, step-by-step precipitation of Cu-Mn slag was put forward based on thermodynamics analysis and test, selective reagents and optimum conditions of separation process of Cu-Mn slag were selected and determined, and pilot test was conducted. The results show that the optimal process route and process control conditions are as follows: 1) Temperature of Cu-Mn slurring process is 30 ℃, L/S=3.0~3.5, and stirring time is 30 min. 2) Temperature of manganese carbonate leaching is 60~70 ℃, iron powder dosage is 0.7±0.05 times of theoretical amount, and reaction time is 3.5 h. 3) Temperature of copper enrichment process is 30 ℃, L/S=1, and reaction time is 3 h. 4) Temperature of cobalt recovery process is 70~80 ℃, pH=3.0~3.5, and stirring time is 30 min. 5) Temperature of manganese recovery process is 70~80 ℃, pH=8.0~8.5, and stirring time is 60 min. Stability of process conditions and metal recovery reach expected effect, and product quality and process maturity meet the requirements. |
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