Study of third phase formation in the uranyl nitrate extraction process from nitric acid media by tri-n-butyl phosphate

[ Abdi Valami ] - Uranium Conversion Facility Co., Isfahan, Iran
[ Sanjari ] - Uranium Conversion Facility Co., Isfahan, Iran
[ Najafian ] - Uranium Conversion Facility Co., Isfahan, Iran
[ Sayyari ] - Uranium Conversion Facility Co., Isfahan, Iran

خلاصه مقاله:

In this study, the effect of insoluble impurities and nitric acid concentration of uranyl nitrate aqueous solution and mixing rate on the extraction efficiency and third phase formation was investigated. The results of experiments showed that the insoluble impurities of uranyl nitrate aqueous solution decrease the extraction efficiency and increase third phase formation. The increasing of nitric acid concentration of uranyl nitrate aqueous solution (up to %wt 22) increases the extraction efficiency and decreases third phase formation, but it has inverse effect on the extraction process at more concentrations. The increasing of mixing rate (up to1000 rpm) increases the extraction efficiency, but it has inverse effect on the extraction process at more rates. Also, increasing of mixing rate increases the third phase formation.

Solvent extraction; Uranyl nitrate; Emulsion; Tri-n-butyl phosphate; Third phase