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| Basic Study on Extraction of Vanadium by Pressurized Alkali Leaching from Vanadium Extraction Tailings |
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Received:September 02, 2024
Revised:September 02, 2024
Accepted:September 03, 2024
Published Online:September 11, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.10.023 |
| KeyWord:vanadium metallurgy, vanadium extraction tailings; pressure leaching; alkaline leaching |
| Author | Institution |
| HU Lei |
矿冶科技集团有限公司 |
| CAO Xuejiao |
桂林理工大学 |
| LIANG Xinxing |
北方矿业有限责任公司 |
| ZHANG Weiguang |
桂林理工大学 |
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| Abstract: |
| In view of the recovery and utilization of vanadium from vanadium extraction tailings, the alkaline pressure leaching technology was proposed to realize the leaching and extraction of vanadium from vanadium extraction tailings. The raw material was analyzed and the effects of temperature, sodium hydroxide concentration, reaction time, liquid-solid ratio and stirring speed on the leaching rate of vanadium, chromium and silicon in the tailings were investigated. The results indicate that the leaching rate of vanadium can be controlled at 50% when the temperature is 120 ℃, the dosage of sodium hydroxide is 10%, the liquid-solid ratio is 4~6 mL/g, the time is one hour, and the stirring speed is 400 r/min. At the same time, the leaching of chromium and silicon is reduced as much as possible. The purification degree of the solution is maintained, and good solution conditions are provided for the subsequent extraction of vanadium. |
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