Refractory sliding nozzle plate
OwnerHiroshi Shikano, Tsutomu Haradainventors
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Abstract
A refractory for use in casting of molten metal which essentially comprises refractory material comprising corundum and monoclinic zirconia as principal mineral phase and including Al.sub.2 O.sub.3 and ZrO.sub.2, silicon-containing powder and carbon-containing powder and which optionally includes first additional refractory material comprising mullite, baddellite and corundum as principal mineral phase and including Al.sub.2 O.sub.3, ZrO.sub.2 and SiO.sub.2, one or more second additional refractory materials and/or alumina.
Claims10
A refractory sliding nozzle plate for use in casting of molten metal, based on the weight of said refractory, comprising,
- (A) 5-90% by weight of refractory material consisting of corundum and monoclinic zirconia as principal mineral phase and having the composition including 80-98% by weight of Al.sub.2 O.sub.3 and 2-20% by weight of ZrO.sub.2 based on the weight of said refractory material;
- (B) 1-10% by weight of silicon-containing powder containing at least 80% by weight of silicon based on the weight of said powder and having a particle size less than and up to 100 mesh;
- and
- (C) 1-15% by weight of carbon powder containing at least 80% by weight of fixed carbon based on the weight of siad carbon powder and having a particle size less than and up to 100 mesh.
Dependencies are inferred from the claim text.