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| Study on Sulfuric Acid Reduction Leaching on Copper-Cobalt Ore |
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Received:November 27, 2012
Revised:November 28, 2012
Accepted:November 28, 2012
Published Online:May 21, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.06.005 |
| KeyWord:copper-cobalt ore; reduction leaching; column leaching |
| Author | Institution |
| Liu Da-xue |
北京矿冶研究总院 |
| Wang Yun |
北京矿冶研究总院 |
| Yuan Chao-xin |
北京矿冶研究总院 |
| Guo Chi-hao |
北京矿冶研究总院 |
| Li-Yun |
北京矿冶研究总院 |
| Sun-Cong |
北京矿冶研究总院 |
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| Abstract: |
| The sulfuric acid reduction leaching on copper-cobalt ore of Congo (DRC) was investigated. The results show that the leaching rate of Cu and Co reaches 93.35 % and 90.13% respectively under the following conditions including ore particle size of sample of 90% -0.074 mm, terminal pH value of 1.5, dosage of SO2 of 1.5 times of theoretical amount, reaction temperature of 80 ℃, reaction time of 120 min, and ratio of liquid to solid of 4∶1. Based on the above results, the column leaching test to simulate heap leaching is conducted. The multistage leaching process is adopted to leach copper firstly and then reduction leach cobalt by column leaching process. The leaching rate of Cu and Co reaches 72% and 66% respectively. |
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