FIELD: chemistry.
SUBSTANCE: method for vitrifying radioactive slag includes its mixing with a fluxing additive, calcination, heating the mixture to the melting point, maintaining at that temperature for the homogenization, and subsequent crystallization by means of cooling the melt to obtain chemically and radiation resistant glass ceramic; the fluxing agent for the calcined slag is represented by sodium tetraborate (Na2B4O7) at the following ratio of the components, wt %: slag 55-85; Na2B4O7 - 15-45.
EFFECT: invention allows to obtain glass ceramic in which the silicophosphate phase is formed, firmly fixing actinide elements and having high chemical and radiation resistance and thermodynamic stability.
4 cl, 4 dwg, 3 ex
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