High density chronic oxide refractory block
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United States of America Patent
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-
Feb 9, 1988
Grant Date -
N/A
app pub date -
Aug 1, 1986
filing date -
Aug 1, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Large, dense chromic oxide refractory blocks containing from about 80% to about 98% chromic oxide are made by firing a green block comprising, in addition to the chromic oxide, titania and a colloidal silica having a surface area of at least about 90 m.sup.2 /g. Blocks having porosities as low as 0% are made in either an oxidizing or a reducing atmosphere. The blocks are crack-free and have a good resistance to corrosion by molten glass.
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