Separation of samarium, europium and erbium by oleic acid solution at stoichiometric rate of extractant

被引：0
|
作者：
Cheremisina, O. V. [1 ]
Litvinova, T. E. [1 ]
Lutskiy, D. S. [1 ]
机构：
[1] St Petersburg Min Univ, St Petersburg, Russia
来源：
INNOVATION-BASED DEVELOPMENT OF THE MINERAL RESOURCES SECTOR: CHALLENGES AND PROSPECTS | 2019年
关键词：
SOLVENT-EXTRACTION; CARBOXYLIC-ACIDS;
D O I：
暂无
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
Total equilibrium constants of extraction process by slope-analysis method for samarium, europium and erbium using oleic acid were determined. The constants of lanthanide oleates formation processes were defined. Equilibrium composition of liquor by the system of thermodynamic equations was calculated. It was established that anion form of oleic acid takes a part in formation of lanthanide oleates. Potential of using the stoichiometric quantity of oleic acid was shown for the process of extraction of samarium, europium and erbium with pH from 3,5 to 5,5 with separation factor at least 2.
引用
收藏
页码：413 / 419
页数：7
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