Simultaneous Recovery of Cerium and Fluorine from Bastnaesite leach liquor by Mixtures of Cyanex 923 and HEH(EHP)

被引：44

作者：

Zhang, Zhifeng ^{[1
]}

Guo, Fuqiang ^{[1
]}

Meng, Shulan ^{[1
]}

Jia, Qiong ^{[2
]}

Li, Hongfei ^{[1
]}

Li, Deqian ^{[1
]}

机构：

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

[2] Jilin Univ, Coll Chem, Changchun 130022, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2010年 / 49卷 / 13期

关键词：

RARE-EARTHS; SYNERGISTIC EXTRACTION; SOLVENT-EXTRACTION; LANTHANUM(III); SEPARATION; BEHAVIOR; TH(IV);

D O I：

10.1021/ie9017385

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this paper, studies were carried out on the extraction and recovery of cerium and fluorine by mixtures of Cyanex923 and HEH(EHP) (2-ethylhexylphosphonic mono-2-ethylhexyl ester) from a bastnaesite sulphuric leaching solution. The effects of different variables on the extraction such as the H2SO4 concentration in the leaching liquor, saturated loaded extraction, and stoichiometric quantity of H2O2 were investigated. Results indicated that the capacity of Ce(III) and F extraction with HEH(EHP) was negligible and Ce(IV) could be strongly extracted by both Cyanex923 and HEH(EHP); on the other hand, CeF3 had been produced at the stripping stage. Furthermore, appropriate technical parameters of the extraction system have been provided for industry applications and have also been confirmed by multistage countercurrent extraction. On the basis of the above results, the integrated flow of separation and recovery of rare earths from bastnaesite has been provided.

引用

页码：6184 / 6188

页数：5

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