| A novel process for the recovery of iron,titanium, and vanadium from vanadium-bearing titanomagnetite:sodium modification-direct reduction coupled process |
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| 作者姓名： | Yi-min Zhang Ling-yun Yi Li-na Wang De-sheng Chen Wei-jing Wang Ya-hui Liu Hong-xin Zhao Tao Qi |
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| 作者单位： | University of Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | This work was financially supported by the National Basic Research Program of China，the National Science Foundation for Distinguished Young Scholars of China，the Key Research Program of Chinese Academy of Sciences，the National Natural Science Foundation of China，China Postdoctoral Science Foundation |
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| 摘 要： | A sodium modification-direct reduction coupled process was proposed for the simultaneous extraction of V and Fe from vanadium-bearing titanomagnetite. The sodium oxidation of vanadium oxides to water-soluble sodium vanadate and the transformation of iron oxides to metallic iron were accomplished in a single-step high-temperature process. The increase in roasting temperature favors the reduction of iron oxides but disfavors the oxidation of vanadium oxides. The recoveries of vanadium, iron, and titanium reached 84.52%, 89.37%, and 95.59%, respectively. Moreover, the acid decomposition efficiency of titanium slag reached 96.45%. Compared with traditional processes, the novel process provides several advantages, including a shorter flow, a lower energy consumption, and a higher utilization efficiency of vanadium-bearing titanomagnetite resources.
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| 关 键 词： | titanomagnetite direct reduction modification leaching magnetic separation |
A novel process for the recovery of iron,titanium, and vanadium from vanadium-bearing titanomagnetite: sodium modification–direct reduction coupled process |
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| Yi-min Zhang,Ling-yun Yi,Li-na Wang,De-sheng Chen,Wei-jing Wang,Ya-hui Liu,Hong-xin Zhao,Tao Qi.A novel process for the recovery of iron,titanium, and vanadium from vanadium-bearing titanomagnetite:sodium modification-direct reduction coupled process[J].International Journal of Minerals,Metallurgy and Materials,2017,24(5):504-511. |
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| Authors: | Yi-min Zhang Ling-yun Yi Li-na Wang De-sheng Chen Wei-jing Wang Ya-hui Liu Hong-xin Zhao Tao Qi |
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| Institution: | National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | A sodium modification-direct reduction coupled process was proposed for the simultaneous extraction of V and Fe from vanadium-bearing titanomagnetite.The sodium oxidation of vanadium oxides to water-soluble sodium vanadate and the transformation of iron oxides to metallic iron were accomplished in a single-step high-temperature process.The increase in roasting temperature favors the reduction of iron oxides but disfavors the oxidation of vanadium oxides.The recoveries of vanadium,iron,and titanium reached 84.52％,89.37％,and 95.59％,respectively.Moreover,the acid decomposition efficiency of titanium slag reached 96.45％.Compared with traditional processes,the novel process provides several advantages,including a shorter flow,a lower energy consumption,and a higher utilization efficiency of vanadium-bearing titanomagnetite resources. |
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| Keywords: | titanomagnetite direct reduction modification leaching magnetic separation |
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