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| Configuration Scheme and Experimental Research of Beneficiation and Metallurgy for Cobalt-rich Crusts |
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Received:August 17, 2021
Revised:August 27, 2021
Accepted:August 30, 2021
Published Online:October 20, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.11.005 |
| KeyWord:cobalt-rich crusts; mining dilution rate; reduction leaching test; configuration scheme of beneficiation and metallurgy; technical-economic indicator |
| Author | Institution |
| WANG Sheng-dong |
矿冶科技集团有限公司 |
| WANG Li-gang |
矿冶科技集团有限公司 |
| FENG Lin-yong |
矿冶科技集团有限公司 |
| SUN Xu-dong |
矿冶科技集团有限公司 |
| LI Da |
矿冶科技集团有限公司 |
| LIU Wan-feng |
矿冶科技集团有限公司 |
| ZHANG Deng-gao |
矿冶科技集团有限公司 |
| ZHAO Feng |
矿冶科技集团有限公司 |
| JIANG Wei |
矿冶科技集团有限公司 |
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| Abstract: |
| To address inevitable entrainment of base rock during mining process of cobalt-rich crusts, a combined process of beneficiation and metallurgy was used to deal with cobalt-rich crusts. The processes of different beneficiation (flotation, strong magnetic separation, gravity magnetic separation) combined with sulfur dioxide reduction acid leaching were studied, and the technical and economic indicators under different mining dilution rates (10%, 20%, 30%) were analyzed. The results show that cobalt-rich crusts must be processed economically by a combined process of beneficiation and metallurgy. Among the three schemes, strong magnetic separation-metallurgy configuration is relatively better, followed by flotation-metallurgy configuration, and heavy magnetic beneficiation-metallurgy configuration rank at the bottom, and the specific beneficiation process can be selected according to actual situation. Compared with concentrate obtained after beneficiation and raw ore of different mining dilution rates, only when the amount of sulfur dioxide is raised by 9.4% and amount of sulfuric acid is raised by 6.7%, leaching rate of nickel, cobalt and manganese can be basically the same of 90% above. Concentrates consume less sulfur dioxide and sulfuric acid, which is more cost-effective. |
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