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| Study on Vanadium Extraction from Stone Coal with Acid Curing and Two Stage Countercurrent Leaching Process |
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Received:November 20, 2012
Revised:November 20, 2012
Accepted:November 23, 2012
Published Online:May 21, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.06.007 |
| KeyWord:stone coal; sulfuric acid; curing; vanadium extraction; counter current leaching |
| Author | Institution |
| XING Xue-yong |
长沙矿冶研究院有限责任公司 |
| Wan Hong-qiang |
长沙矿冶研究院有限责任公司 |
| Ning shun-ming |
长沙矿冶研究院有限责任公司 |
| She Zhong-hua |
长沙矿冶研究院有限责任公司 |
| Wu Jiang-hua |
长沙矿冶研究院有限责任公司 |
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| Abstract: |
| Extracted first from stone coal in Yueyang, Hunan province with acid curing, vanadium was then leached by two-stage countercurrent extraction process. The results show that the raw material is first treated with curing process under the conditions including dosage of sulfuric acid of 26%, particle size of -2.0 mm, curing temperature of 150 ℃, and curing time of 3.5 h. The total vanadium leaching rate is about 94% after the curing material is leached at room temperature with two stage countercurrent process under the conditions including ratio of liquid to solid of 1.5∶1 and leaching time for each stage of 3.0 h. This process has the advantages of no roasting dust pollution, high vanadium leaching rate, simple of flowsheet and etc. |
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