| 原铝在离子液体中低温电解精炼的研究 |
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| 引用本文： | 郑勇,郑永军,王振,牛永生.原铝在离子液体中低温电解精炼的研究[J].有色金属(冶炼部分),2020(5):51-55. |
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| 作者姓名： | 郑勇 郑永军 王振 牛永生 |
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| 作者单位： | 安阳工学院 化学与环境工程学院,安阳工学院 化学与环境工程学院,安阳工学院 化学与环境工程学院,安阳工学院 化学与环境工程学院 |
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| 基金项目： | 国家自然科学基金资助项目（21406002，21702005）；河南省高等学校青年骨干教师培养计划（2017GGJS175） |
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| 摘 要： | 采用离子液体1-乙基-3-甲基咪唑氯铝酸盐为电解质,对原铝的低温电解精炼反应进行研究。根据电化学测试结果,系统考察了原铝中各主要元素的氧化过程,证明铝与主要杂质元素在离子液体中具有明显不同的初始氧化电位,能够通过恒电位电解法对原铝进行精炼提纯。在此基础上,通过两步电解法完成了杂质的高效分离,获得了最佳的反应条件。结果表明,经过0.2~0.4V和40~80℃下的电解精炼反应,可以得到纯度高于99.95%的精铝。
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| 关 键 词： | 原铝 离子液体 电解精炼 低温熔盐 |
| 收稿时间： | 2020/1/13 0:00:00 |
| 修稿时间： | 2020/1/13 0:00:00 |
Study on Low-temperature Electrorefining of Primary Aluminum in Ionic Liquid |
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| ZHENG Yong,ZHENG Yong-jun,WANG Zhen and NIU Yong-sheng.Study on Low-temperature Electrorefining of Primary Aluminum in Ionic Liquid[J].Nonferrous Metals(Extractive Metallurgy),2020(5):51-55. |
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| Authors: | ZHENG Yong ZHENG Yong-jun WANG Zhen and NIU Yong-sheng |
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| Affiliation: | Department of Chemical and Environmental Engineering,Anyang Institute of Technology,Henan Anyang 455000;China,,, |
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| Abstract: | Low-temperature electrorefining of primary aluminum in ionic liquid 1-ethyl-3-methylimidazolium chloroaluminate was carried out.Oxidation process of main elements of primary aluminum was investigated by electrochemical measurements which demonstrated that onset oxidation potential of aluminum was different from those of impurity elements,which facilitated electrorefining of primary aluminum under constant potential.On this basis,separation of impurities was completed with high efficiency by two-step electrolysis method and the optimum experimental conditions were obtained.The results show that highpurity aluminum with mass content higher than 99.95%can be obtained at 0.2~0.4 Vand 40~80 ℃ by electrorefining. |
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| Keywords: | primary aluminum ionic liquid electrorefining low-temperature molten salts |
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