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Removal of impurities from scandium solutions by ion exchange

用离子交换法去除含钪溶液中的杂质

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Abstract

A process of removing impurities, such as Fe, Zr, Ti, Al, Si, from scandium solution by ion exchange was proposed. Various resins’ selectivity was studied in scandium chloride solution. The results indicated that D851 resin had high selectivity of Sc at low acidity, and high selectivity of Zr at high acidity; D370 resin had high selectivity of Fe and Si in high acidity. A new technical process of removing impurities from scandium chloride solution was proposed, which includes D370 resin adsorbing Fe in high acidity, D851 resin adsorbing Zr in medium acidity and D851 resin adsorbing Sc at low acidity. Flow experimental results show that removal rates of Al, Ca, Fe, Zr, Ti and Si, were 100%, 99.6%, 100%, 100%, 99.5% and 100% respectively.

摘要

提出一种用离子交换深度净化钪溶液的工艺,以去除钪溶液中的铁、锆、钛、铝、钙、硅等杂 质。研究了在氯化钪溶液中各种树脂的选择性,结果表明,在弱酸条件下,D851 树脂对钪具有很强 的选择性,随着酸浓度的升高,D851 树脂对锆的选择性急剧增强,同时,D370 树脂对铁和硅的选择 性也随之增强。为此,提出了D370 高酸除铁—D851 中酸除锆—D851 弱酸吸附钪的净化除杂工艺。 该工艺处理后,铝、钙、铁、锆、钛、硅的去除率分别为100%、99.6%、100%、100%、99.5%、100%。

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Authors and Affiliations

  1. Laboratory of Metallurgical Separation Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Zhen Peng  (彭桢), Qing-gang Li  (李青刚), Zhao-yang Li  (李兆洋), Gui-qing Zhang  (张贵清), Zuo-ying Cao  (曹佐英) & Wen-juan Guan  (关文娟)

  2. National Engineering Laboratory for Efficient Utilization of Refractory Non-ferrous Metals Resources, Central South University, Changsha, 410083, China

    Zhen Peng  (彭桢), Qing-gang Li  (李青刚), Zhao-yang Li  (李兆洋), Gui-qing Zhang  (张贵清), Zuo-ying Cao  (曹佐英) & Wen-juan Guan  (关文娟)

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  1. Zhen Peng  (彭桢)
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  2. Qing-gang Li  (李青刚)
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  3. Zhao-yang Li  (李兆洋)
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  4. Gui-qing Zhang  (张贵清)
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  5. Zuo-ying Cao  (曹佐英)
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  6. Wen-juan Guan  (关文娟)
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Correspondence to Qing-gang Li  (李青刚).

Additional information

Foundation item: Project(2015BAB19B03) supported by the National Science and Technology Supporting Plan of China

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Peng, Z., Li, Qg., Li, Zy. et al. Removal of impurities from scandium solutions by ion exchange. J. Cent. South Univ. 25, 2953–2961 (2018). https://doi.org/10.1007/s11771-018-3965-7

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  • DOI: https://doi.org/10.1007/s11771-018-3965-7

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