Foam control method for vacuum refining of glassy materials

Glass manufacturing – Processes – Fining or homogenizing molten glass

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65136, 65 27, C03B 5225

Patent

active

047948604

ABSTRACT:
In a process for refining molten glass or the like by vacuum, the collapse of foam is accelerated by contacting the foam with foam breaking substances. The foam breaking substances include water, alkali metal compounds such as sodium hydroxide or sodium carbonate, and solutions of such compounds.

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