Immersion nozzles for metal melts
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United States of America Patent
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-
Dec 15, 1992
Issued Date -
N/A
app pub date -
Oct 11, 1991
filing date -
Aug 12, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A refractory immersion nozzle which can be used for processing metal melts, and a process for producing the nozzle by providing a mixture containing alumina having a maximum grain size of 250 microns, an aggregate having less tendency than alumina to form incrustations during use of the nozzle, boron nitride, a fluxing agent, a bonding agent and a mixing liquid, molding the mixture to form a shaped body, and drying the shaped body. The nozzle inhibits accretion of slag constituents from the metal melts, and has sufficiently good spalling resistance.
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