Separation of Uranium and Transuranic Elements from Rare Earth Elements by Means of Multistage Extraction in LiCl-KCl/Bi System

摘要: A pyrometallurgical partitioning process is being developed for recovering transuranic elements (TRUs) from high-level liquid waste. For estimating the separation efficiencies of TRUs rare earth (REs), preliminary measurements were made distribution coefficients in an LiCl-KCl/Bi system at 773 K. Actual REs was experimented by multiple-batch extraction system. The experimental results agreed well with estimates obtained measured factors single-step reductive extraction. simulation study performed counter-current extraction, which TRU recovery yields and derived coefficients. indicated that should permit recovering” more than 99% every actinide contained waste, while ensuring a mass ratio to high enough deriving metallic fuels FBR.