Glass manufacturing – Processes – Fining or homogenizing molten glass
Patent
1998-10-01
2000-09-19
Vincent, Sean
Glass manufacturing
Processes
Fining or homogenizing molten glass
65157, 6537412, 6537413, C03B 542
Patent
active
061194840
ABSTRACT:
A vacuum degassing apparatus for molten glass includes a vacuum housing where a vacuum is created; a vacuum degassing vessel housed in the vacuum housing to degas the molten glass; an introduction device communicated to the vacuum degassing vessel so as to introduce untreated molten glass into the vacuum degassing vessel, or preferably an uprising pipe; and a discharge device to discharge treated molten glass from the vacuum degassing vessel, or preferably a downfalling pipe. In the apparatus, at least a portion of at least one of the vacuum degassing vessel, the uprising pipe and the downfalling pipe that directly contact the molten glass is constituted by refractory material having a porosity of not greater than 5%. The apparatus can increase quantity of flow of the molten glass and consequently a degassing throughput of the molten glass, having the same size and the same pressure loss. The apparatus can further increase the quantity of flow and the degassing throughput without making the size of the apparatus excessively larger.
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Imamaki Katsuharu
Ishino Toshihiro
Kawaguchi Toshiyasu
Kijima Takashi
Matsuwaki Masataka
Asahi Glass Company Ltd.
Vincent Sean
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