Investigation on Separation of Trace Vanadium by Extraction from Vanadium-containing Ammonium Tungstate Solution AITranslate
Abstract AITranslate
Alkaline extraction method with quaternary ammonium salt was proposed for deep removal of va- nadium from vanadium-containing ammonium tungstate solution and experimental research was carried out. The effects of organic phase composition and equilibrium aqueous pH on extraction were investigated as well as the effect of O/A ratio on stripping. Isotherms of extraction and stripping were plotted and the simulated multi-stage countercurrent extraction and stripping experiments were conducted. The results show that the concentration of vanadium in the aqueous phase drops below 10 mg/L and tungsten loss is below 5% after six-stage countercurrent extraction under the following conditions： organic phase composi- tion （volume fraction） of 1% N263, 5% 2-octanol and sulfonated kerosene,feed pH of 8.7 （by evaporation deamination pretreatment） ,phase ratio （O/A） of 1.25 ： 1 and 25 ℃. Vanadium in the loaded organic phase can be completely stripped with 2 mol/L NaOH solution,and the stripped organic phase can be returned to the extraction process for recycle.
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Basic Information:
DOI：
Chinese Library Classification Number:TF841.3[冶金工程—有色金属冶金]
Citation Information:
Alkaline extraction method with quaternary ammonium salt was proposed for deep removal of va- nadium from vanadium-containing ammonium tungstate solution and experimental research was carried out. The effects of organic phase composition and equilibrium aqueous pH on extraction were investigated as well as the effect of O/A ratio on stripping. Isotherms of extraction and stripping were plotted and the simulated multi-stage countercurrent extraction and stripping experiments were conducted. The results show that the concentration of vanadium in the aqueous phase drops below 10 mg/L and tungsten loss is below 5% after six-stage countercurrent extraction under the following conditions： organic phase composi- tion （volume fraction） of 1% N263, 5% 2-octanol and sulfonated kerosene,feed pH of 8.7 （by evaporation deamination pretreatment） ,phase ratio （O/A） of 1.25 ： 1 and 25 ℃. Vanadium in the loaded organic phase can be completely stripped with 2 mol/L NaOH solution,and the stripped organic phase can be returned to the extraction process for recycle.
quote
| GB/T 7714-2015 | [1] WANG Liu-pei, ZHANG Gui-qing, GUAN Wen-juan, et al. Investigation on Separation of Trace Vanadium by Extraction from Vanadium-containing Ammonium Tungstate Solution[J]. Rare Metals and Cemented Carbides, 2017(4): 1-5. |
| MLA | [1] WANG Liu-pei, et al., "Investigation on Separation of Trace Vanadium by Extraction from Vanadium-containing Ammonium Tungstate Solution." Rare Metals and Cemented Carbides, no. 4, 2017, pp. 1-5. |
| APA | [1] WANG Liu-pei, ZHANG Gui-qing, GUAN Wen-juan, ZENG Li, ZHOU Qin, & XIA Yun. (2017). Investigation on Separation of Trace Vanadium by Extraction from Vanadium-containing Ammonium Tungstate Solution. Rare Metals and Cemented Carbides(4), 1-5. |
| IEEE | [1] WANG Liu-pei, ZHANG Gui-qing, GUAN Wen-juan, ZENG Li, ZHOU Qin, and XIA Yun, "Investigation on Separation of Trace Vanadium by Extraction from Vanadium-containing Ammonium Tungstate Solution," Rare Metals and Cemented Carbides, no. 4, pp. 1-5, 2017. keywords: {vanadium- containing ammonium tungstate solution;vanadium removal;quaternary ammonium salt;extraction;stripping;evaporation deamination} |