Equilibrium Distributions of Actinides and Fission Products in Pyrochemical Separation Systems, (II)LiCl-KCl/Cd System

摘要

Equilibrium distributions of actinides and fission products were determined in a LiCl-KCl/Cd system at 800973 K. The redox potential of the system was controlled with the addition of reductant Li. Different distribution behaviors due to different group elements were observed. The group partitioning in this system was thus supported to be feasible. On reduction, however, the actinide and lanthanide elements were found to be less soluble in the Cd phase and to remain at the interface in the form of their solid intermetallics. A group partitioning process in which reductive extraction is combined with filtration was proposed on the basis of the present observations.