Method and apparatus for preparing molten glass

Details Method and apparatus for preparing molten glass Method and apparatus for preparing molten glass

C - Chemistry, Metallurgy

03

B

49/77

C03B 5/16 (2006.01) C03B 1/02 (2006.01) C03C 1/02 (2006.01)

Patent

CA 1107510

ABSTRACT OF THE INVENTION Volatile borates and/or fluorides are removed from the hot stack gases of a glass furnace by passing the hot stack gases up through a layer of wet pellets containing ions of an alkaline earth metal or an alkali metal. The pellets may contain solid borates and/or fluorides as part of the feed to the glass furnace, and still absorb volatile materials from the stack gases, so long as the borates and/or fluorides in the pellets are in, or are converted to, a less soluble and volatile form than are the volatile materials in the stack gases. Ca(OH)2 is a preferred material for converting the volatiles into an essentially nonvolatile form. Ion exchange materials, such as clay, can also. he used to capture these volatiles.

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