Study on separation of rare earth elements in complex system

被引：35

作者：

Chang Hongtao ^{[1
,2
]}

Li Mei ^{[1
,2
]}

Liu Zhaogang ^{[1
,2
]}

Hu Yanhong ^{[1
,2
]}

Zhang Fushun ^{[1
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Mat Sci & Engn, Baotou 014010, Peoples R China

[2] Inner Mongolia Autonomous Univ, Key Lab New Technol Modern Met & Applicat Rare Ea, Baotou 014010, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2010年 / 28卷

基金：

中国国家自然科学基金;

关键词：

extraction; distribution ratio; separation coefficient; acetic acid; rare earths; SOLVENT-EXTRACTION; ACID; RECOVERY; LANTHANUM; AGENT; METAL;

D O I：

10.1016/S1002-0721(10)60270-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effect of the feed acidity, acetic acid concentration and rare earth concentration on the distribution ratio, separation coefficient and extraction capacity of light rare earth elements were studied in the P204(DEHPA)-HCl system and P507(HEH/EHP)-HCl system both containing acetic acid, respectively. The results showed that the distribution ratio and separation coefficient decreased with increasing of acidity, and increased with increasing of acetic acid concentration and rare earths concentration, and the extraction capacity increased with increasing of acetic acid concentration. When pH value of feed was 2.0, [RE]/[acetic acid] was 1:1 and rare earth concentration 0.35 mol/L, in P204(DEHPA)- HCl system with acetic acid, the maximum separation coefficient(beta) reached to beta(Ce/La)=4.09, beta(Pr/Ce)=1.96 and beta(Nd/Pr)=1.53, and the separation ability of this extraction system was better than P507(DEHPA)-HCl system.

引用

页码：116 / 119

页数：4