SEPARATION AND PURIFICATION OF ^234Th FROM AGED URANIUM SALT

This paper summarizes the results of separation and purification of ^234Th from aged uranium salt with two processes(see flowsheet A or B).The flowsheet.A:TBP extraction,anion exchange and TTA extraction;the flowsheetB:Cation and anion exchange,TTA extraction.The total recovery efficiency of ^234Th is about 90%.The γ-spectrum of the end-product contains only two typic peaks of ^234Th(63and 92keV).Pure ^234Th is prepared.