Ying Ziwen, Ren Xiulian, Wei Qifeng. Research on Solvent Extraction for Separation of Vanadium and Chromium[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(1): 23-28. doi: 10.7513/j.issn.1004-7638.2019.01.005
Citation:
Ying Ziwen, Ren Xiulian, Wei Qifeng. Research on Solvent Extraction for Separation of Vanadium and Chromium[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(1): 23-28. doi: 10.7513/j.issn.1004-7638.2019.01.005
Ying Ziwen, Ren Xiulian, Wei Qifeng. Research on Solvent Extraction for Separation of Vanadium and Chromium[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(1): 23-28. doi: 10.7513/j.issn.1004-7638.2019.01.005
Citation:
Ying Ziwen, Ren Xiulian, Wei Qifeng. Research on Solvent Extraction for Separation of Vanadium and Chromium[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(1): 23-28. doi: 10.7513/j.issn.1004-7638.2019.01.005
Using the O216 synthesized in laboratory and 3# inert solvent as the extraction solution and the leaching solution from sodium roasting of V-Cr slag as raw material,the effects of pH of the leaching solution,concentration of the extraction solution,extraction temperature,extraction time and phase ratio on the separation efficiency of V and Cr were studied.The saturation capacity of the extraction solution under the optimum conditions was determined.The optimum conditions are shown as follows:the leaching solution pH of 1.8,the volume concentration of 40% for the extraction solution,the extraction temperature of 30℃,the extraction time of 5 min,and the phase ratio of 1:1.The single stage extraction rate of vanadium and chromium are 98.79% and 36.42% respectively,with the separation factor at 142.90.The saturation capacity of O216 extraction solution for vanadium and chromium is respectively 41.46 g/L of V2O5 and 3.62 g/L of Cr2O3.It shows an effective separation of vanadium and chromium in the extraction solution of O216-3# inert solvent.