Application of P507 and isooctanol extraction system in recovery of scandium from simulated red mud leach solution

被引：58
作者：
Liu, Chuanying [1 ,2 ]
Chen, Li [1 ,2 ]
Chen, Ji [1 ]
Zou, Dan [1 ]
Deng, Yuefeng [1 ]
Li, Deqian [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2019年 / 37卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Solvent extraction; Scandium recovery; Isooctanol; Red mud; Rare earths; SOLVENT-EXTRACTION; RARE-EARTHS; SULFURIC-ACID; SEPARATION; YTTERBIUM(III); IMPURITIES; MECHANISM; SC(III); ESTER; ORE;
D O I：
10.1016/j.jre.2018.12.004
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The current recovery technique of Sc was complicated and the chemical consumption was high. This was due to the low content of Sc in resources and the difficulty of stripping. In this research, the isooctanol was added into the 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (P507) extraction system to reduce the extraction and improve the stripping of Sc. The maximum stripping ratio of Sc from loaded organic phase by sulfuric acid can increase from 10% (without isooctanol) to 99% (with 15 vol% isooctanol). In the extraction test of the simulated red mud leaching liquor, the separation factors between Sc and Zr, Sc and Ti are 36 and 350, separately. At the same time, other metals are almost not extracted. The high selectivity and stripping of Sc suggest that the P507 with isooctanol extraction system can be applied in the practical Sc recovery process. (C) 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1002 / 1008
页数：7
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