SHS Immobilization of Radioactive Wastes

Samples of mineral-like ceramics based on perovskite and model radioactive wastes were synthesized and studied. Influence of aluminum, silicon and titanium oxides additives on the properties of the obtained ceramics was investigated. It was shown, that cesium losses decreased during the synthesis while aluminum, silicon and titanium oxides content in the initial mixture was increased, and cesium uniform distribution by the sample volume was achieved. It was found, that the synthesized ceramics was characterized by dense structure and fine chemical stability; it contained mainly a perovskite phase of a present composition.