Extractive separation of Th(IV), U(VI), Ti(IV), La(III) and Fe(III) from Zarigan ore

摘要: In this study, the effects of various extraction parameters such as extractant types (Cyanex302, Cyanex272, TBP), acid type (nitric, sulfuric, hydrochloric) and their concentrations were studied on thorium separation efficiency from uranium(VI), titanium(IV), lanthanum(III), iron(III) using Taguchi’s method. Results showed that, all these variables had significant selective separation. The optimum separations uranium, titanium iron achieved by Cyanex302. aqueous solutions 0.01 1 M nitric found best conditions for separating (or iron) respectively. combination Cyanex272 that to be lanthanum. results also TBP could selectively extract elements into organic phase leaving behind in phase. Detailed experiments 0.5 HNO3 is concentration other with acidic extractants two-stage process containing TBP-Cyanex302 was proposed uranium Zarigan ore leachate.