Abstract: STUDY ON STRIPPING OF URANIUM IN TRPO PROCESS .SELECTION OF THE STRIPPING AGENTAuthor Guo YifeiJiao RongzhouLiang JunfuMeng ZhaokunLiu Xiuqin (Institute of Nuclear Energy Technology,Tsinghua University P.O.Box 1021,Beijing 102201) ABSTRACT The stripping of uranium in TRPO process is studied.When the concentration ratio of H2C2O4 to HNO3 in the TRPO phase is higher than 3,the compound UO2C2O4TRPO is precipitated,but it does not affect the stripping of uranium.While C2O2-4 concentration in the Na2CO3 stripping solution is higher the Na2C2O4 crystal will be separated out.If H2C2O4 is scrubbed out from TRPO phase using 0.2 mol/L or 0.8 mol/L HNO3,the white precipitate does not occur in the stripping solution of uranium. Key words TRPO phaseUraniumStripping )