Process for waste confinement by vitrification in metal cans

US10538448B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Philippe Gruber · Grandvaux, CH
• Olivier Pinet · Poulx, FR
• Hélène Rabiller · Toulouse, FR
• Roger Boen · Pont-Saint-Esprit, FR
• Nicolas Bousquet · Colombes, FR
• Jean-Luc Dussossdy · Jacou, FR
• Jacques Lacombe · Villeneuve-lès-Avignon, FR

Key dates

• Filing date: Jul 28, 2009
• Grant date: Jan 21, 2020
• Expiry date: Jul 28, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/50
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Process for confinement of waste containing at least one chemical species to be confined, by in-can vitrification in a hot metal can into which waste and a vitrification additive are added, the waste and the vitrification additive are melted to obtain a glass melt which is then cooled, characterised in that at least one oxidising agent is also added into the metal can and in that the concentration of oxidising agent(s) expressed as oxide(s) in the glass melt is between 0.1 and 20% by mass, preferably 4 and 20% by mass, even more preferably 5 and 15% by mass, and even more preferably 10 and 13% by mass of the glass melt mass.