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1. (WO1999007500) REFRACTORY COMPOSITION FOR THE PREVENTION OF ALUMINA CLOGGING

Pub. No.:    WO/1999/007500    International Application No.:    PCT/US1998/015716
Publication Date: Fri Feb 19 00:59:59 CET 1999 International Filing Date: Thu Jul 30 01:59:59 CEST 1998
IPC: B22D 41/54
Applicants: NORTH AMERICAN REFRACTORIES CO.
Inventors: PERICH, Regis, M.
RICHTER, Tomas
Title: REFRACTORY COMPOSITION FOR THE PREVENTION OF ALUMINA CLOGGING
Abstract:
A molten steel pouring nozzle (10) having a bore (22) therethrough, at least a portion (26) of the nozzle (10) forming the bore (22) being comprised of a refractory having calcium zirconate: from 20 to 75 weight %, graphite: from 5 to 30 weight %, and calcium silicide: from 0.5 to 15 weight %.