Traditional monolithic unit for liquid radioactive waste immobilization comprises concentrated radioactive waste and a mineral-like hardener fixing in its structure radioactive waste components. In the newly-developed technology, at least one compound taken from the group: pyroxene, pyroxylicate, garnet, titanosilicate is used as a mineral-like material. The unit itself has a polycrystal, glass ceramic or amorphous structure. Modifications of the monolithic unit provides for possible replacement of the said compounds by another ones. The following ratio of the unit compounds (by weight, %) are proposed to be fulfilled:

Shestoperov I.N., etc.

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