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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 12    December 2018

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Removal of impurities from scandium solutions by ion exchange
PENG Zhen(彭桢)1, 2, LI Qing-gang(李青刚)1, 2, LI Zhao-yang(李兆洋)1, 2, ZHANG Gui-qing(张贵清)1, 2, CAO Zuo-ying(曹佐英)1, 2, GUAN Wen-juan(关文娟)1, 2

1. Laboratory of Metallurgical Separation Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. National Engineering Laboratory for Efficient Utilization of Refractory Non-ferrous Metals Resources, Central South University, Changsha 410083, China

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.

 

Key words: scandium; ion exchange; separation; adsorption

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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