用P507-磺化煤油溶液从硝酸溶液中萃取分离镅(铜)与稀土元素  

EXTRACTION AND SEPARATION OF Am AND RARE EARTH ELEMENTS IN HNO_3 SOLUTION WITH P507 - SULPHONATING KEROSENE

作　　者：李镇虎[1] 焦荣洲[1] 朱永(贝睿[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《核科学与工程》1994年第1期64-71,7,共8页Nuclear Science and Engineering

基　　金：国家自然科学基金资助项目

摘　　要：测定了镅(锔)和轻稀土元素(La、Ce、Pr、Nd、Sm)在P507-磺化煤油和硝酸溶液中的分配比,确定了它们被萃取能力的顺序为:La<Ce<Am<Pr<Nd<Sm,建立了分配比的数学模型,实验值与计算值符合的较好,为设计镅与稀土元素分离流程提供了参考依据.A study has been made of the extraction equilibrium of Am ( Ⅲ) and rare earth elements (Ⅲ ) in HNO3 solution with P507 - sulphonating kerosene. It has been found that this equilibrium depends on saponification ratio of P507, feed acidity, metal concentration as well as phase ratio. The extraction ability in order is La<Ce<Am<Pr<Nd<Sm. The model of distribution ratio has been founded. The agreement for the calculated values and the experimental values of distribution ratio is fairly good. These values can be used to design the extraction and separation process of Am and rare earth elements.

关 键 词：镅 萃取 P507 稀土族 高放废液 

分 类 号：TL941[核科学技术—辐射防护及环境保护]