| 摘要 |
A refractory material for steelmaking is comprised of 50 to 95% zirconia (ZrO<SUB>2</SUB>), 0 to 35% of silica (SiO<SUB>2</SUB>), 5 to 35% carbon (C), less than 5% alumina (Al<SUB>2</SUB>O<SUB>3</SUB>) and anti-oxidant such as silicon (Si) metal and a carbide. The anti-oxidant may be in amounts up to about 10% by weight. The refractory material has application in making delivery nozzles and transition pieces. Disclosed also is a method of continuous casting steel strip comprising the steps of assembling a pair of casting rolls having a nip between them; assembling a delivery system for delivering molten steel to form a casting pool comprised of at least some refractory material for contacting the molten steel comprised of 50 to 95% zirconia, 0 to 35% silica, 5 to 35% carbon, less than 5% alumina and anti-oxidant and carbides, and rotating the casting rolls to form thin steel strip delivered downwardly through the nip.
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