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| Study on Leaching of Low-grade Pyrolusite with Leaves of Bambusa Vulgaris |
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Received:August 25, 2020
Revised:August 28, 2020
Accepted:September 01, 2020
Published Online:December 03, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.12.005 |
| KeyWord:pyrolusite；Bambusa Vulgaris；sulfuric acid；reduction leaching |
| Author | Institution |
| LU You-zhi |
桂林理工大学南宁分校 |
| JIANG Yan |
桂林理工大学南宁分校 |
| WANG Jun-zheng |
桂林理工大学南宁分校 |
| SU Li-min |
桂林理工大学南宁分校 |
| CEN Xiang-shi |
桂林理工大学南宁分校 |
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| Abstract: |
| Low-grade pyrolusite was leached in sulfuric acid with leaves of Bambusa Vulgaris as reductant. Effects of sulfuric acid concentration, reaction time, reaction temperature, reductant dosage and L/S on manganese leaching rate were investigated through single-factor experiments. Comprehensive effect of each condition on manganese leaching rate was explored and optimized by response surface method. The results show that sequence of factors on manganese leaching rate is reaction temperature, sulfuric acid concentration, bamboo leaf dosage and reaction time. Manganese leaching rate is 97.47% under the conditions of sulfuric acid concentration of 2.37 mol/L, reaction time of 2.24 h, reaction temperature of 98.5 ℃, Bambusa Vulgaris dosage of 4.97 g, and L/S of 9 mL/g. |
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