Glass melting method and apparatus

Details Glass melting method and apparatus Glass melting method and apparatus

1989-02-21

1991-01-08

Woodard, Joye L.

Glass manufacturing

Processes

Operating under inert or reducing conditions

65136, 65178, 65326, 65356, C03B 5167

Patent

active

049831984

ABSTRACT:
In a method of and an apparatus for melting glass having high reducing activity when melted, a glass raw material charged into a melting vessel having a wall formed of platinum or alloy thereof is heated and melted. Oxygen gas is supplied to an outer surface of the melting vessel to raise oxygen partial pressure within an atmosphere surrounding the melting vessel. The oxygen gas is caused to penetrate through the wall of the melting vessel, thereby supplying the penentrated oxygen to a layer of the molten glass which is in contact with an inner surface of the wall of the melting vessel, so that the layer of the molten glass is formed into a protective glass layer rich in oxygen, for protecting the wall of the melting vessel from the molten glass.

REFERENCES:
patent: 2877280 (1959-03-01), Eden
patent: 2982522 (1961-05-01), Hamilton et al.
patent: 3171731 (1965-03-01), Barger et al.
patent: 3206295 (1965-09-01), Mattern
patent: 3233993 (1966-02-01), Weidel
patent: 3293017 (1966-12-01), Jenkins
patent: 3353943 (1967-11-01), Loutte
patent: 3716349 (1973-02-01), Deeg et al.
patent: 4806138 (1989-02-01), Miura et al.

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