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| Leaching and Extraction of Vanadium and Chromium from Vanadium Tailings |
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Received:April 08, 2016
Revised:April 12, 2016
Accepted:April 13, 2016
Published Online:August 19, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.09.004 |
| KeyWord:vanadium tailings; sulfuric acid leaching; P204; extraction |
| Author | Institution |
| WANG Qi |
东北大学 多金属共生矿生态化冶金教育部重点实验室 |
| JIANG Mao-fa |
东北大学 多金属共生矿生态化冶金教育部重点实验室 |
| WANG Meng |
东北大学 多金属共生矿生态化冶金教育部重点实验室 |
| ZHANG Jie |
东北大学 多金属共生矿生态化冶金教育部重点实验室 |
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| Abstract: |
| Valuable elements were recovered from vanadium tailings by sulfuric acid leaching and solvent extraction. The results indicate that extraction rate of vanadium and chromium is 98.2% and 84.8% respectively when leached with 80% H2SO4. Vanadium recovery rate is 56.2% after three-stage extraction and stripping with 20% P204 80% sulfonated kerosene as extractant. Chromium loss ratio is 4% below in extraction process. Product of Cr2O3 with grade of 89.6% is obtained by hydrolysis of raffinate. Separation and recovery of vanadium and chromium from vanadium tailings are achieved by this method. |
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