Glass manufacturing – Processes – Fining or homogenizing molten glass
Patent
1974-11-29
1976-04-20
Bashore, S. Leon
Glass manufacturing
Processes
Fining or homogenizing molten glass
65136, 65178, 65179, 65347, C03B 516, C03B 518
Patent
active
039516350
ABSTRACT:
In accordance with the method and apparatus of this invention, glass-forming materials are subjected to heat and agitation sufficient to form a molten glass having mostly dissolved glass-forming materials, mostly completed chemical reactions between the glass-forming materials and containing a high number of gaseous inclusions, and containing up to 50 volume percent entrapped gases. This glass appears foamy. The molten glass is transferred to a second chamber to complete melting of any unmelted sand grains remaining from the glass-forming materials, and completes the chemical reactions that remain incompleted, and to remove any remaining cords, and to reduce the foamy character of the melt to a dense molten glass which contains only small-sized gaseous inclusions. This molten glass is then subjected to centrifugal forces sufficient to remove the small-sized gaseous inclusions and thereby produce a refined molten glass having a desired quality of homogeneity and both a reduced number and a different size distribution of gaseous inclusions.
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patent: 3350185 (1967-10-01), Rough
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patent: 3594259 (1971-07-01), Coen et al.
patent: 3725025 (1973-04-01), Gimenez
patent: 3754886 (1973-08-01), Richards et al.
patent: 3819350 (1974-06-01), Pellet et al.
patent: 3885945 (1975-05-01), Rees et al.
Bashore S. Leon
Holler E. J.
Innis D. T.
Miga Frank W.
Owens--Illinois, Inc.
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