Mitigation of secondary phase formation during waste...

B - Operations – Transporting – 09 – B

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B09B 3/00 (2006.01) A62D 3/30 (2007.01)

Patent

CA 2699304

A method for vitrification of high level waste to reduce the formation of persistent secondary phases comprising the steps of providing a high level waste for vitrification; providing a glass frit additive for mixing with said high level waste; redistributing selected constituents of said glass frit for mixing separately as raw chemicals with said high level waste; and, feeding said high level waste, said glass frit additive, and the redistributed glass frit constituents to a melter for vitrification of said high level waste so that formation of secondary phases is suppressed.

L'invention concerne un procédé de vitrification de déchets de haut niveau destiné à réduire la formation de phases secondaires persistantes. Le procédé comprend les étapes consistant à se procurer des déchets de haut niveau pour vitrification ; se procurer un additif à base de fritte de verre destiné à être mélangé avec lesdits déchets de haut niveau ; redistribuer des constituants sélectionnés de ladite fritte de verre pour les mélanger séparément en tant que produits chimiques bruts avec lesdits déchets de haut niveau ; et introduire lesdits déchets de haut niveau, ledit additif à base de fritte de verre et lesdits constituants de la fritte de verre redistribués dans un pot de fusion pour vitrifier lesdits déchets de haut niveau et éviter ainsi la formation de phases secondaires.

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