Immobilization characteristics of molten LiCl salt waste by blending

In order to treat a waste salt from Li-reduction of pyrochemical process, a simple blending process with zeolite A, which could incorporate fission products such as Cs and Sr, were used. A V-type blender, with better efficiency in long-time mixing, was used in investigation of a crystal structure of a salt-loaded zeolite(SLZ) and free salt, in characterization of the SLZ according to operating condition, reaction temperature and time. LiCl*H2O and NaCl were not shown in SLZ by direct-blending, but shown as the minor phases in that by V-type blending. And, NaA phase was transformed to Li-NaA phase at a mixing ratio of LiCl to zeolite, r=1.0, reaction time of 20 hrs, and reaction temperature of 500 .deg. C. A XRD pattern of LiCl*H2O in SLZ with reaction time of 10 hrs showed higher intensity than that of NaCl, and the free salt also increased more, which suggested that the reaction time should not be maintained less than 15 hrs