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
来源：
JournalofRareEarths | 2017年 / 35卷 / 03期
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]([P6,6,6,14][SOPAA]) were pronouncedly higher than those of sec-octylphenoxy acetic acid（HSOPAA）,a mixture of HSOPAA and[P6,6,6,14]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
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