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Leaching process and kinetics of manganese in low-grade manganese ore |
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| Authors: | Chao Xie Longjun Xu Tiefeng Peng Kun Chen Jing Zhao |
| Institution: | 1625. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China 2625. School of Environmental Protection and Safety Engineering, University of South China, Hengyang, 421001, China 3625. School of Chemical Engineering, University of Queensland, Brisbane, QLD, 4072, Australia 4625. College of Safety Engineering, Chongqing University of Science and Technology, Chongqing, 400042, China |
| Abstract: | Manganese was extracted from leaching low-grade manganese ore in sulfuric acid medium. The effects of granule diameter, leaching time, liquid/solid ratio (V/W) and the concentration of sulfuric acid were investigated through orthogonal and single factor experiments. The experimental results showed that the optimal leaching conditions are, size of 0.054 mm, 120 minutes of reaction time, 3 (V/W) of liquid/solid ratio and 30% of the concentration of sulfuric acid (g/g). Under those conditions, the leaching efficiency is 96.73%. The kinetics of the leaching process is in accordance with the characteristics of fractal reaction. |
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