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| Study on Acid-leaching and Electrowinning Process of a Manganese Carbonate Ore |
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Received:December 04, 2012
Revised:December 05, 2012
Accepted:December 05, 2012
Published Online:August 23, 2013
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| DOI： |
| KeyWord:manganese;carbonate ore, acid-leaching, electrowinning |
| Author | Institution |
| Liu Da-xue |
Beijing General Research Institute of Mining and Metallurgy |
| Wei Qi-jin |
Beijing General Research Institute of Mining and Metallurgy |
| Guo Chi-hao |
Beijing General Research Institute of Mining and Metallurgy |
| Yuan Chao-xin |
Beijing General Research Institute of Mining and Metallurgy |
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| Abstract: |
| Acid-leaching and electrowinning process on a manganese carbonate ore from Chongqing was studied. Effects of ore particle size, acid/ore ratio, leaching temperature and time on leaching rate of manganese were investigated and leaching-electrowinning cycle test were conducted. Results showed that under an optimum leaching condition as: particle size of 90% of -0.15mm, acid/ore ratio of 0.6, leaching temperature of 60℃ ,L/S ratio of 8:1,and leaching time of 4h,leaching rate of manganese could reach 91.89%, and a cathode manganese product with Mn≥99.8% could be steadily obtained. Leaching rate of manganese was around 90% when anolyte recycled to leaching circuit. |
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