Highly refractory glass-ceramics suitable for incorporating...

Details Highly refractory glass-ceramics suitable for incorporating... Highly refractory glass-ceramics suitable for incorporating...

G - Physics

21

F

261/15, 31/89

G21F 9/16 (2006.01) C03C 10/00 (2006.01) G21F 9/30 (2006.01)

Patent

CA 1156681

ABSTRACT OF THE DISCLOSURE This invention is concerned with the production of glass ceramics especially suitable for incorporating radio- active wastes. The inventive glass-ceramics contain at least two crystal phases selected from the group of pollucite, mullite, monazite, and, optionally, tetragonal or cubic zirconia as the predominant crystal phases and consist essentially, expressed in weight percent on the oxide basis, of 5-40% Cs2O, 15-50% Al2O3, 0-30% La2O3 + CeO2, 0-20% P2O5, 0-30% ZrO2, 12-65% La2O3 + CeO2 + P2O5, and 15-50% SiO2.

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