Glass composition for improved refining and method

Details Glass composition for improved refining and method Glass composition for improved refining and method

C - Chemistry, Metallurgy

03

C

C03C 3/076 (2006.01) C03C 1/00 (2006.01) C03C 3/078 (2006.01) C03C 3/087 (2006.01)

Patent

CA 2615841

A soda-lime-silica based glass composition for manufacturing on a float line that has a faster refining rate due to the introduction of alkali earth oxides such as BaO, ZnO and/or SrO in the amount of from about 1-4 wt % in total. These oxides replace part or all of the MgO in the base glass composition thereby decreasing the overall MgO content in the glass composition to about 2 wt % or less. The glass can realize a lower viscosity at high temperatures so that refining of the melt may occur faster.

Composition de verre à base silico-sodo-calcique pour la fabrication sur une ligne de flottage présentant un taux d'affinage plus rapide du fait de l'introduction d'oxydes alcalino-terreux tels que BaO, ZnO et / ou SrO à une teneur allant d'environ 1 à 4 % en poids au total. Ces oxydes remplacent tout ou partie du MgO dans la composition de verre de base, diminuant ainsi la teneur globale en MgO dans la composition de verre à environ 2 % en poids ou moins. Le verre peut atteindre une viscosité plus faible à haute température, de sorte que l'affinage de la coulée peut se produire plus vite.

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