Extracting vanadium from argillaceous vanadium ore by direct acid leaching without grinding and roasting

被引：0
作者：
机构：
[1] Faculty of Land Resource Engineering, Kunming University of Science and Technology
来源：
Tong, X. (xiongtong2000@yahoo.com) | 1600年 / Editorial Office of Chinese Journal of Rare Metals卷 / 37期
关键词：
Argillaceous vanadium ore; Direct acid leaching; Leaching rate; Sulfuric acid; Vanadium extraction;
D O I：
10.3969/j.issn.0258-7076.2013.04.017
中图分类号：
学科分类号：
摘要：
Argillaceous vanadium ore was one of important vanadium resources. The property analysis of a certain argillaceous vanadium ore revealed that the argillaceous vanadium ore belonged to acidic ores and was suitable for leaching using sulfuric acid based on its main chemical compositions of SiO2 and Al2O3, and it was necessary to destroy the lattice structure of illite and change the low valence vanadium into high valence vanadium with oxidant (assistant leaching agent) in order to leach vanadium and further improve the vanadium leaching rate, for most of the vanadium in argillaceous vanadium ore existed in the form of low valence V(III) which was insoluble and located in silicon-oxygen tetrahedron microcrystalline structure of illite. And then, aiming at shortages of the existing vanadium extraction technologies, a new technology of direct acid leaching vanadium without grinding and roasting was put forward according to properties of argillaceous vanadium ore. The effects of leaching factors including dosage of sulfuric acid, type and dosage of assistant leaching agent, leaching time and temperature, liquid-solid ratio on the vanadium leaching rate were systematically investigated. The results showed that the technology of direct acid leaching vanadium from argillaceous vanadium ore without grinding and roasting was feasible and the leaching performance was perfect, and the vanadium leaching rate could reach 92.58% under the optimal conditions of sulfuric acid dosage of 30%, MnO2 as assistant leaching agent and its dosage of 1.5%, leaching time of 6 h, leaching temperature of 90°C, liquid-solid ratio of 1:1. Owing to leaving out the high cost grinding procedure and the complex roasting procedure, the new technology had the advantages of shortening the process, decreasing the cost, avoiding pollution generated by roasting comparing with the traditional technologies, and it could meet the requirement of modern metallurgy very well.
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页码：621 / 627
页数：6
相关论文
共 15 条
  • [1] Zheng L.Y., Yu S.M., Liu B., Chen L., Huang L.L., Kinetics of leaching vanadium with alkaline from stone coal, Chinese Journal of Rare Metals, 35, 1, (2011)
  • [2] Li H.R., Feng Y.L., Liang J.L., Luo X.B., Du Z.W., Vanadium recovery from clay vanadium mineral using an acid leaching method, Rare Metals, 27, 2, (2008)
  • [3] Li H.R., Feng Y.L., Luo X.B., Wang H.J., Du Z.W., Leaching kinetics of extraction of vanadium pentoxide from clay mineral, Journal of Central South University (Science and Technology), 39, 6, (2008)
  • [4] Liang J.L., Fang Z., Li H.R., Feng Y.L., Extraction of vanadium from clay vanadium mineral by acid leaching, Nonferrous Metals, 60, 1, (2008)
  • [5] Yang F., The research of distilling V<sub>2</sub>O<sub>5</sub> from the clay vanadium mineral, Journal of Jiangxi University of Science and Technology, 31, 3, (2010)
  • [6] Zhu J., Guo J.K., Qi J.Y., Liu X.Y., Xue J.J., Wang N., Extraction of vanadium from materials of stone coal roasting, Chinese Journal of Rare Metals, 36, 5, (2012)
  • [7] Zhang Y.M., Bao S.X., Liu T., Chen T.J., Huang J., The technology of extracting vanadium from stone coal in China: history, current status and future prospects, Hydrometallurgy, 109, 1-2, (2011)
  • [8] Zhu Y.G., Zhang G.F., Feng Q.M., Lu Y.P., Ou L.M., Huang S.J., Acid leaching of vanadium from roasted residue of stone coal, Transactions of Nonferrous Metals Society of China, 20, S1, (2010)
  • [9] Aarabi-Karasgani M., Rashchi F., Mostoufi N., Vahidi E., Leaching of vanadium from LD converter slag using sulfuric acid, Hydrometallurgy, 102, 1-4, (2010)
  • [10] Wang M.Y., Xiao L.S., Li Q.G., Wang X.W., Xiang X.Y., Leaching of vanadium from stone coal with sulfuric acid, Rare Metals, 28, 1, (2009)
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