A solvent extraction process with mixture of CA12 and Cyanex272 for the preparation of high purity yttrium oxide from rare earth ores

被引：75

作者：

Wang, Yanliang ^{[1
,2
]}

Liao, Wuping ^{[1
]}

Li, Deqian ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 82卷

关键词：

Solvent extraction; Separation; CA12; Cyanex272; Yttrium; Rare earths; OCTYLPHENOXY ACETIC-ACID; SEPARATION;

D O I：

10.1016/j.seppur.2011.09.018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Solvent extraction and separation of yttrium from other rare earths in chloride medium using the mixture of sec-octylphenoxy acetic acid (CA12, HA) and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272. HB) has been investigated. Tri-n-butyl phosphate (TBP) was used as the phase modifier to achieve fast phase separation and to improve the stability of the organic phase. The separation coefficients (beta) between yttrium and heavy rare earths (HRE) are more significant in the double solvent (HAB) extraction system than the CA12-TBP extraction system. In a laboratory scale test with a fractional extraction process including 15 stages of extraction section and 10 stages of scrubbing section, yttrium was separated from all the other rare earths with a yield of 95% and an yttrium oxide product with 99.94% purity was obtained. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：197 / 201

页数：5

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