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| Study on Roasting and Acid-leaching of Vanadium with Potassium Salt from Vanadium Titano-Magnetite Concentrate |
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Received:June 19, 2017
Revised:June 21, 2017
Accepted:June 26, 2017
Published Online:November 22, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.12.007 |
| KeyWord:vanadium titano-magnetite; additive; acid leaching; vanadium extraction; potassium salt |
| Author | Institution |
| Li Renmin |
武汉科技大学资源与环境工程学院 |
| Liu Tao |
武汉科技大学资源与环境工程学院 |
| Zhang Yimin |
武汉科技大学资源与环境工程学院 |
| Huang Jing |
武汉科技大学资源与环境工程学院 |
| Hu Pengcheng |
武汉科技大学资源与环境工程学院 |
| ShiQihua |
武汉科技大学资源与环境工程学院 |
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| Abstract: |
| With vanadium titano-magnetite concentrate as raw material, K2SO4 is the optimum roasting additive confirmed by experiment. Vanadium leaching rate is 75.54% with 30 percentage points higher than that of blank roasting under the same optimum conditions including dosage of K2SO4 of 4%, roasting temperature of 900 ℃, roasting time of 1 h, leaching temperature of 95 ℃, leaching of 1.5 h, sulfuric acid volume concentration of 15%, and L/S of 3 (mL/g). XRD and SEM analysis show that K2SO4 can obviously destroy structure of vanadium-bearing minerals and promote formation of soluble potassium vanadate, which greatly improves leaching rate of vanadium. |
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