A separation processing for industrial rare earth feed solution by phosphonium ionic liquid type saponification strategy

被引:0
作者
董亚敏 [1 ,2 ]
郭向广 [1 ,2 ]
王艳良 [1 ,2 ]
赵泽原 [1 ,2 ]
黄超 [1 ,3 ]
孙晓琦 [1 ,2 ]
机构
[1] Xiamen Institute of Rare Earth Materials,Haixi Institute,Chinese Academy of Sciences
[2] Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences
[3] School of Metallurgy and Chemical Engineering,Jiangxi University of Science & Technology
基金
中国国家自然科学基金;
关键词
heavy rare earth; ionic liquid; saponification; fractional extraction;
D O I
暂无
中图分类号
O614.322 [];
学科分类号
070301 ; 081704 ;
摘要
A novel ionic liquid type saponification processing based on quaternary phosphonium type bifunctional IL was developed for yttrium separation from ion-adsorbed rare earth deposit.The extractabilities of([trihexyl(tetradecyl)phosphonium][sec-octylphenoxy acetate]([P][SOPAA]) were pronouncedly higher than those of sec-octylphenoxy acetic acid(HSOPAA),a mixture of HSOPAA and[P]Cl for rare earth elements(REEs).The ion association extraction mechanism contributed to avoiding the numerous saponification procedures using alkali and resulting in saponification wastewater.After 13 stages of extraction and 6 stages of scrubbing sections,the Y(Ⅲ) was successfully separated from industrial heavy RREs feed,the purity of Y(Ⅲ) in raffinate was approximately to be 98.9%.Stripping by distilled water was effectively achieved for REEs,which contributed to the decreased consumption of acid to a considerable extent.
引用
收藏
页码:290 / 299
页数:10
相关论文
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