Pan Ziwei, Zheng Shili, Wang Zhongxing, Wang Shaona, Du Hao, Zhang Yi, Xie Hua. Research on Simultaneous Extraction of Vanadium and Chromium from High Chromium Vanadium Slag by Sub-molten Salt Method[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(2): 1-8. doi: 10.7513/j.issn.1004-7638.2014.02.001
Citation:
Pan Ziwei, Zheng Shili, Wang Zhongxing, Wang Shaona, Du Hao, Zhang Yi, Xie Hua. Research on Simultaneous Extraction of Vanadium and Chromium from High Chromium Vanadium Slag by Sub-molten Salt Method[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(2): 1-8. doi: 10.7513/j.issn.1004-7638.2014.02.001
Pan Ziwei, Zheng Shili, Wang Zhongxing, Wang Shaona, Du Hao, Zhang Yi, Xie Hua. Research on Simultaneous Extraction of Vanadium and Chromium from High Chromium Vanadium Slag by Sub-molten Salt Method[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(2): 1-8. doi: 10.7513/j.issn.1004-7638.2014.02.001
Citation:
Pan Ziwei, Zheng Shili, Wang Zhongxing, Wang Shaona, Du Hao, Zhang Yi, Xie Hua. Research on Simultaneous Extraction of Vanadium and Chromium from High Chromium Vanadium Slag by Sub-molten Salt Method[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(2): 1-8. doi: 10.7513/j.issn.1004-7638.2014.02.001
In order to realize efficient and low-cost low-temperature simultaneous extraction of vanadium and chromium from high chromium vanadium slag,NaOH sub-molten salt liquid phase oxidation was employed according to phase of the slag.After the influences of reaction temperature of NaOH sub-molten salt system,NaOH-to-ore mass ratio and speed of stirring on vanadium extraction were studied,the optimum process parameters were obtained.With the reaction temperature of 220℃,NaOH concentration of 85%,NaOH-to-ore mass ratio of 10:1,stirring speed of 950 r/min,atmospheric oxygen flow of 1 L/min and reaction time of 6 h,the leaching rates of vanadium and chromium reached 95% and 90% or above respectively,which indicates the realization of comprehensive utilization of vanadium slag.
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