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| Study on Direct Reduced Leaching of Low Grade Oxidized Copper and Cobalt Ores |
| Received:October 17, 2018 Revised:April 18, 2019 |
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| DOI： |
| KeyWord:oxidized copper and cobalt ores;SO<sub>2</sub>;reduced leaching;two stage adverse current |
| Author | Institution |
| Li Qiang |
BGRIMM Technology Group |
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| Abstract: |
| The direct reduced leaching of complex low grade of oxidized copper and cobalt ores was studied.The results show that the leaching rates of copper, nickel and cobalt are 37.605%、51.184% and 80.832% respectively, in the following conditions: the liquid to solid ratio 2:1,the leaching temperature 80℃, the sulfuric acid consumption 100kg/t ore, the leaching time 4 h,the ending potential 340~350mV.On this basis, the use of two stage countercurrent leaching, can effectively save the amount of reducing agent SO<sub>2</sub> and the comprehensive utilization of free acid in the leaching solution, save the alkali consumption of the following process. |
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