Abstract：The characteristics of five different phosphinic (phosphoric) impregnated resins adsorbing heavy rare earth elements in hydrochloric acid are studied by static method. The results indicate that the impregnated resin containing double extractants is better than the single one (Cyanex272) under the same conditions. The optimal proportions between Cyanex272 and P507, Cyanex302, Cyanex923, TBP are 1:1, 5:1, 1:1, 2:1. The better pH value is 3~4 and the time of adsorptive equilibrium 50 min. Temperature rising enhances the adsorption respectively. Under the same experimental conditions, the saturated adsorptive capabilities of five different phosphinic (phosphoric) impregnated resins (Cyanex272, Cyanex272-P507, Cyanex272-Cyanex302, Cyanex272-Cyanex923, Cyanex272-TBP) in heavy rare earth are 20.04, 25.37, 21.87, 22.16, 38.48 mg/g, respectively.
2007, Vol. 7 
