Process for the production of glass
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United States of America Patent
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May 9, 1989
Grant Date -
N/A
app pub date -
Oct 27, 1987
filing date -
Feb 28, 1986
priority date (Note) -
Expired
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Abstract
A process for production of a glass by a vacuum melting method using silica as raw materials comprising heating silica powders in the presence of an accelerator for phase conversion to convert them into a sintered body having cristobalite phase; molding or repowdering the sintered body; containing or filling the resulted sintered body in a container having a desired shape; and then heating and melting it in vacuo for glass formation, or accumulating a plurality of the sintered bodies into a desired shape; and then heating and melting it for glass formation, whereby a high-quality glass ingot having a desired shape or a larger glass ingot can be readily obtained without reduction in productivity.
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