Glass melting tanks and refractory material therefor
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United States of America Patent
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Aug 16, 1988
Issued Date -
N/A
app pub date -
Oct 29, 1987
filing date -
Nov 30, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The glass melting tank for supplying a flat glass forming process has a melting zone for melting solid batch material and a refining zone with reduced return flow of glass. The base of the refining zone comprises a fusion cast refractory material comprising alumina, silica and between 31% and 43% by weight of zirconia. The refractory is conditioned by oxidation at at least 1450.degree. C. for 24 hours.
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