Abstract
The results of a model experiment on removing fission products and process impurities from a melt consisting of the salts NaCl-2CsCl by precipitation of weakly soluble phosphates are described. x-Ray phase analysis, scanning electron microscopy, emission spectral analysis, and the MSS-1 test are used to study the chemical and phase composition as well as the thermal and chemical stability of a ceramic produced from the phosphate precipitate. It is shown that the main phase of the ceramic is monazite, which incorporates many rare-earth elements and processing impurities. The ceramic obtained possesses high hydrolytic and thermal stability, making it a promising material for immobilizing wastes.
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