Method of vacuum refining of glassy materials with selenium foam

Details Method of vacuum refining of glassy materials with selenium foam Method of vacuum refining of glassy materials with selenium foam

1989-04-03

1989-12-12

Kellogg, Arthur

Glass manufacturing

Processes

Fining or homogenizing molten glass

65 183, 65 184, 65 20, 65 27, 65136, C03B 5225

Patent

active

048865397

ABSTRACT:
In a method of vacuum refining molten glass or the like, selenium is provided in the molten glass to serve as a foaming agent, which yields improved refining. Alternatively, colored glass compositions that include selenium as a colorant are refined at higher than normal pressures to retain selenium in the glass without sacrificing refining performance.

REFERENCES:
patent: 3203816 (1965-08-01), Bull et al.
patent: 3291585 (1966-12-01), Okamura et al.
patent: 3499743 (1970-03-01), Fanica et al.
patent: 3779734 (1973-12-01), Simonfi et al.
patent: 4110097 (1978-08-01), Chevallier et al.
patent: 4110098 (1978-08-01), Mattmuller
patent: 4211568 (1980-07-01), Davis
patent: 4794860 (1989-01-01), Welton

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