Molten steel pouring nozzle
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United States of America Patent
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-
Feb 11, 1992
Grant Date -
N/A
app pub date -
Nov 28, 1990
filing date -
Jan 23, 1990
priority date (Note) -
Expired
status (Latency 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 89 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 1 to 25 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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