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    • 8. 发明申请
    • Ceramic compositions
    • 陶瓷组合物
    • US20010036894A1
    • 2001-11-01
    • US09867534
    • 2001-05-31
    • Foseco International Limited
    • Kassim JumaSumihiko Kurita
    • C04B035/00
    • C04B35/58078C04B35/013C04B35/117C04B35/488C04B35/583C04B35/63476C04B35/6348C04B35/63484C04B35/63496C04B35/66
    • Ceramic compositions which are of particular value in the handling or casting of steel, for example as lining materials or for producing nozzles or shrouds used in continuous casting, comprise a mixture of particles of boron nitride, zirconium diboride and at least one other refractory material, bonded together by carbon produced by the decomposition of an organic binder such as a resin or pitch. The other refractory material may be for example a refractory metal, an oxide, a carbide, a boride or a nitride. Zirconium oxide containing compositions comprising 5-70% by weight boron nitride, 5-60% by weight zirconium diboride and 5-80% by weight of zirconium oxide are particularly suitable for forming at least that part of a nozzle which in use is at the slag line in a molten steel vessel. Aluminum oxide containing compositions comprising 5-70% by weight boron nitride, 15-50% by weight zirconium diboride and 10-70% by weight aluminum oxide are particularly suitable for forming the inside of nozzles as they resist alumina build up and prevent clogging of the nozzles.
    • 在钢的处理或铸造中具有特别价值的陶瓷组合物,例如作为衬里材料或用于生产连续铸造中使用的喷嘴或护罩,包括氮化硼颗粒,二硼化锆和至少一种其它耐火材料的混合物, 通过有机粘合剂如树脂或沥青的分解产生的碳键合在一起。 另一种耐火材料可以是例如难熔金属,氧化物,碳化物,硼化物或氮化物。 包含5-70重量%氮化硼,5-60重量%二硼化锆和5-80重量%氧化锆的含氧化锆的组合物特别适于形成至少一部分喷嘴,该喷嘴在使用中为 在钢水容器中的渣线。 包含5-70重量%氮化硼,15-50重量%二硼化锆和10-70重量%氧化铝的含氧化铝的组合物特别适用于形成喷嘴内部,因为它们抵抗氧化铝堆积并防止堵塞 喷嘴。