| Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
Wu Enhui, Li Jun, Hou Jing, Xu Zhong, Huang Ping, Liu Qianshu, Lv Song. Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004
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Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid
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Abstract
In order to improve the comprehensive utilization rate of V2O5 form vanadium titanomagnetite concentrates, the direct leaching and the roasting-leaching tests were carried out using titanium white waste acid byorthogonal experiment method. The results of direct leaching experiment show that the liquid-solid ratio is the most important factor affecting the leaching rate of V2O5, and the concentration of titanium white waste acid is the least. The 71.05% vanadium can be leached under the experimental condition of 20% of titanium white waste acid, 90℃ for 90 min with a liquid-to-solid ratio of 5. The results of roasting-leaching experiment show that the effects of roasting temperature, K2CO3 ratio, Na2CO3 ratio and roasting time on the leaching rate of V2O5 are from large to small. When the conditions of roasting time of 2 h, roasting temperature of 1000℃, Na2CO3 ratio of 10%, and K2CO3 ratio of 10%, and the leaching rate of V2O5 can reach 84.48%.
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References
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Wu Enhui, Li Jun, Hou Jing, Xu Zhong, Huang Ping, Liu Qianshu, Lv Song. Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 20-24. doi: 10.3969/j.issn.1000-6532.2022.05.004
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Figure 1.
XRD patterns of vanadium titanomagnetite concentrates
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Figure 2.
Variation curve change of V2O5 leaching rate with leaching different factors
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Figure 3.
Variation curve change of V2O5 leaching rate with different roasting factors