Method for controlling glass furnace atmosphere

Details Method for controlling glass furnace atmosphere Method for controlling glass furnace atmosphere

C - Chemistry, Metallurgy

03

B

C03B 5/16 (2006.01) C03B 5/225 (2006.01) C03B 5/235 (2006.01) F27D 7/00 (2006.01)

Patent

CA 2398742

Glass is produced in a glassmelting furnace by combusting fuel and oxidant having an oxygen content greater than 80 vol.% oxygen in a melting zone to form molten glass, wherein the surface of the molten glass is exposed to the gaseous atmosphere in the melting zone and the water vapor content of the atmosphere at the surface of the molten glass is greater than 35 vol.%, and oxidant having an oxygen content greater than 80 vol.% is injected into the refining zone of the furnace under conditions to minimize mixing of said oxidant with gases above said oxidant and sweep water vapor at the surface of the molten glass into the melting zone to lower the water vapor content of the atmosphere at the surface of the molten glass.

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