Refractory ceramics for contact with molten metal
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United States of America Patent
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Dec 19, 1989
Grant Date -
N/A
app pub date -
May 5, 1988
filing date -
May 5, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A refractory article and a process for making the same are provided. The article is derived from dissociated zircon and zirconia (99:1 to 80:20, weight basis). These components are formed into a slip, which can be conventionally processed to provide a sintered article. The resulting article can be subsequently heat treated to react any resulting glass phase with the zirconia present; further, the heat treated article can be subsequently redensified. These refractories are well-suited for such applications as tundish nozzle inserts and sliding gate valves.
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