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| Recovery of Ni, Cu and Co from Ocean Polymetallic Nodules by Metallic Reduction Roasting and Magnetic Separation |
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Received:July 01, 2020
Revised:July 04, 2020
Accepted:July 05, 2020
Published Online:September 17, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.10.001 |
| KeyWord:ocean polymetallic nodules；metallic reduction roasting；magnetic separation；nickel; copper; cobalt |
| Author | Institution |
| HU Xiao-xing |
矿冶科技集团有限公司 |
| ZHAO Feng |
矿冶科技集团有限公司 |
| ZHU Yang-ge |
矿冶科技集团有限公司 |
| JIANG Xun-xiong |
矿冶科技集团有限公司 |
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| Abstract: |
| Beneficiation of Ni, Cu and Co from polymetallic nodules by metallic reduction roasting and magnetic separation was studied. Effects of CaF2 dosage, reduction roasting temperature, SiO2 dosage, pyrite dosage, anthracite dosage, and reduction roasting time on recovery of Ni, Cu and Co were investigated. The results show that concentrate containing 10.09% Ni, 7.86% Cu and 1.59% Co is obtained with recovery of 96.72% Ni, 88.28% Cu and 95.81% Co, respectively under the optimum conditions including pelletizing of ore with addition of 4% CaF2, 2.5% SiO2, 4% pyrite and 7% anthracite, reduction temperature of 1 150 ℃, and reduction time of 2 h, followed by magnetic separation at 160 kA/m. High efficient recovery of valuable components in ocean polymetallic nodules is realized. |
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