ENGINEERING DEVELOPMENT STUDIES FOR MOLTEN-SALT BREEDER REACTOR PROCESSING NO.8

摘要

The remaining parts of this report discuss:n(1) an improved flowsheet for processing MSBR fuel salt by fluorination—reductive extraction and the metal transfer process,n(2) analysis of methods for removing uranium from fuel salt by precipitation as UO2-ThO2 solid solutions,n(3) installation of a simulated continuous fluorinator for studying induction heating in molten salt,n(4) measurement of gas holdup and axial dispersion coefficients in open bubble columns, using a recently devised transient technique,n(5) installation of experiment MTE-2 for demonstration of the metal transfer process for removing rare earths from MSBR fuel carrier salt,n(6) experiments conducted in a mild-steel reductive extraction facility, to increase our understanding of the rate at which uranium is extracted from molten salt into bismuth in a packed column,n(7) the design and testing of devices for preventing axial dispersion in packed columns during the countercurrent flow of molten salt and bismuth,n(8) operation of a static electrolytic cell for reduction of LiCl using a bismuth cathode and a graphite anode,n(9) studies of the purification of salt by continuous methods, and (10) analysis of the feasibility of the electrolytic oxidation of tetravalent protactinium to pentavalent protactinium prior to the precipitation of Pa2O5.