Extraction mechanism of vanadium from vanadium slag leaching solution by N-Octylpyridine ionic liquids

被引：0
|
作者：
Zhou C. [1 ]
Li Y. [1 ]
Xue X.-X. [1 ]
机构：
[1] School of Metallurgy, Northeastern University, Shenyang
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2020年 / 30卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Extraction mechanism; N-Octylpyridine ionic liquids; Vanadium slag leaching solution;
D O I：
10.11817/j.ysxb.1004.0609.2020-37478
中图分类号：
学科分类号：
摘要：
Vanadium is a vitally important strategic resource. At present, the main method to recover vanadium from vanadium slag which obtains from "blast furnace smelting-converter blowing vanadium" process of vanadium-titanium magnetite is hydrometallurgical technology, and the most applied method is solvent extraction. The study was designed to extract V(Ⅴ) from vanadium slag leaching solution by solvent extraction using N-Octylpyridine ionic liquids as extractant and 1-pentanol as diluent. Different parameters affecting the extraction process such as extraction temperature, equilibrium time and extraction pH were investigated. The extraction mechanism was also studied. The results show that under the optimal conditions of pH 2.957-8.029 and 25℃, the maxmium extraction rate reaches 95.42% with [OPy]Cl after 60 s and 93.52% with [OPy][BF4] after 40 s, respectively. Furthermore, based on the methods of ion selective electrode, slope analysis, ultraviolet-visible spectrum and infrared spectrum analysis, the mechanism of extraction is determined as anion exchange. © 2020, Science Press. All right reserved.
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页码：172 / 179
页数：7
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