Immobilization of high-level wastes in stable mineral-like materials in a self-propagating high-temperature synthesis regime

The minerals which are most resistant to natural corrosive media and posses s perovskite, zirconolite, fergusonite, and Y-Al garnet type structures are selected on the basis of an analysis of the mineralogical data. The minera ls contain elements that are isomorphic to radionuclides appearing in high- level wastes. Synthesis of the analogs of calcinites, using metallothermal processes in a self-propagating high-temperature synthesis regime, was inve stigated on model systems in application to the immobilization of calcinate s of high-level wastes. Compaction of the analogs of perovskite and zircono lite was investigated most completely, and the effect of various formulatio ns and technological parameters on the process is studied.