从混合酸性磷类负载有机相中反萃稀土的研究  

Study on Stripping of Rare Earth from Organophosphorus Acid Mixture System

作　　者：张永奇[1] 黄小卫[1] 王春梅[1] 龙志奇[1] 朱兆武[1] 张国成[1] 

机构地区：[1]北京有色金属研究总院稀土材料国家工程研究中心,有研稀土新材料股份有限公司,北京100088

出　　处：《稀有金属》2009年第1期124-128,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金(50674016);国家863计划(2006AA06Z123)资助项目

摘　　要：对负载Sm,Gd,Y的HDEHP和HEH/EHP混合萃取体系进行了反萃性能研究,测定了不同酸度下的累积反萃率,表明反萃率随混合体系中HEH/EHP摩尔比的增加而增大,对于Sm,Gd,Y来说,Sm在有机相中最易反萃,Y最难反萃。同时比较了相同酸度的HCl,HNO3及H2SO4对同一负载有机相的反萃性能,反萃能力为HCl>HNO3>H2SO4。采用HCl对负载Y的HDEHP和HEH/EHP及HDEHP和Cyanex272两种混合萃取体系的反萃性能进行了比较,表明后者具有更优异的反萃性能。Stripping of Sm, Gd, Y from HDEHP and HEH/EHP mixture system were studied in detail. Accumulated stripping ratio in different acidity was also determined. The stripping ratio increased with increase of mole ratio of HEH/EHP in the mixture and decrease of atomic number. Compared with the same acidity of HCl, HNO3, H2SO4, the stripping order was HCl 〉 HNO3 〉 H2SO4. Another mixture system of HDEHP and Cyanex272 was also investigated using HCI. The result showed that this system had more outstanding stripping effect.

关 键 词：HDEHP HEH/EHP CYANEX272 稀土 反萃 

分 类 号：TF845.6[冶金工程—有色金属冶金]