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| Extracting Vanadium from Siliceous Vanadium Ore by Sulphuric Acid Curing and Water Leaching at Normal Temperature |
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Received:September 08, 2021
Revised:September 17, 2021
Accepted:September 18, 2021
Published Online:December 17, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2022.01.011 |
| KeyWord:siliceous vanadium ore; sulfuric acid curing; vanadium extraction; normal temperature water leaching |
| Author | Institution |
| CAO Huan |
西安西北有色地质研究院有限公司 |
| WU Tian-jiao |
西安西北有色地质研究院有限公司 |
| CHEN Qian |
西安西北有色地质研究院有限公司 |
| NING Xin-xia |
西安西北有色地质研究院有限公司 |
| ZHAO Xiao-yi |
西安西北有色地质研究院有限公司 |
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| Abstract: |
| Taking a siliceous vanadium ore in Shaanxi province as research object, exploration experiments of single sulfuric acid leaching, sulfuric acid assisted leaching, blank roasting-leaching, sulfuric acid slaking-normal temperature water leaching vanadium extraction process were carried out. It was determined that sulfuric acid slaking-normal temperature water leaching process was more suitable for siliceous vanadium ore. Effects of curing temperature, curing time, curing sulfuric acid and water dosage, ore particle size, and leaching temperature on vanadium leaching rate were investigated. The results show that leaching rate of vanadium is about 78% under the conditions including curing sulfuric acid dosage of 15%, curing water dosage of 10%, curing temperature of 130 ℃, curing time of 4 h, raw ore particle size of -8 mm, clinker leaching liquid to solid ratio of 1.5, and leaching time at room temperature of 3 h. Leaching temperature has little effect on vanadium leaching rate. The process of "curing - column leaching (heap leaching)" can be used to extract vanadium from this siliceous vanadium ore. |
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