Molten steel pouring nozzle
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United States of America Patent
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Apr 9, 1996
Grant Date -
N/A
app pub date -
Dec 29, 1994
filing date -
Jan 25, 1994
priority date (Note) -
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Abstract
A molten steel pouring nozzle having, along the axis thereof, a bore through which molten steel flows. At least part of an inner portion of the molten steel pouring nozzle, which inner portion forms the bore, is formed of a refractory consisting essentially of: zirconia clinker comprising calcium zirconate: from 40 to 64.9 wt. %, where, a content of calcium oxide in the zirconia clinker being within a range of from 8 to 35 weight parts relative to 100 weight parts of the zirconia clinker, graphite: from 10 to 35 wt. %, and calcium silicate: from 25.1 to 50 wt. %, where, a content of calcium oxide in the calcium silicate being within a range of from 40 to 54 weight parts relative to 100 weight parts of the calcium silicate.
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