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1. 发明申请

US20080032882A1 Nozzle for Use in Continuous Casting 失效
标题翻译：喷嘴用于连续铸造
公开(公告)号：US20080032882A1
公开(公告)日：2008-02-07
申请号：US10592658
申请日：2005-03-14
申请人： Koji Ogata , Saeko Koga , Shinichi Fukunaga
发明人： Koji Ogata , Saeko Koga , Shinichi Fukunaga
IPC分类号： C04B35/06
CPC分类号： C04B35/6262 , B22D41/54 , C04B35/03
摘要： Disclosed is a continuous casting nozzle having a refractory portion formed to contain a dolomite clinker and arranged to define a surface region adapted to be in contact with molten steel, which is capable of protecting a working surface of the nozzle from alumina build-up due to alumina in molten steel, while improving corrosion resistance, even during long-term continuous casting of molten steel. The refractory portion is prepared by adding a binder to a mixed material and subjecting the obtained mixture to kneading, forming and heat treatment. The mixed material comprises a dolomite clinker which has an average particle size of 0.8 mm or less and a CaO content of 50 mass % or less. The mixed material has a ratio W1/W2 of 0.33 or more, wherein W1 is a content by mass of CaO, and W2 is a content by mass of MgO. The mixed material comprises a dolomite clinker and a magnesia clinker. Alternatively, the mixed material comprises a dolomite clinker and a magnesia clinker. The mixed material has a ratio WD/WM in the range of 0.5 to 15, wherein WD is a mass % of dolomite clinker particles having a particle size of 1 mm or less in a particle size distribution of the dolomite clinker, and WM is a mass % of magnesia clinker particles having a particle size of 1 mm or less in a particle size distribution of the magnesia clinker. Further, the mixed material has a ratio W1/W2 in the range of 0.33 to 3.0, wherein W1 is a content by mass % of a CaO component in the dolomite clinker, and W2 is a content by mass % of an MgO component in the magnesia clinker.
摘要翻译：公开了一种连续铸造喷嘴，其具有形成为容纳白云石熟料并且布置成限定适于与钢水接触的表面区域的耐火部分，其能够保护喷嘴的工作表面免于氧化铝堆积，这是由于氧化铝在钢水中，同时提高耐腐蚀性，即使在钢水的长期连续铸造中也是如此。通过将粘合剂添加到混合材料中并对所得到的混合物进行捏合，成形和热处理来制备耐火材料部分。混合材料包括平均粒度为0.8mm以下且CaO含量为50质量％以下的白云石熟料。混合材料的W 1 / W 2的比率为0.33以上，其中W 1是CaO的质量含量，W 2是MgO的质量含量。混合材料包括白云石熟料和氧化镁熟料。或者，混合材料包括白云石熟料和氧化镁熟料。混合材料的WD / WM比为0.5〜15，其中WD为白云石熟料的粒度分布中粒径为1mm以下的白云石熟料颗粒的质量％，WM为在氧化镁熟料的粒度分布中，粒径为1mm以下的氧化镁熟料粒子的质量％。此外，混合材料的比例W 1 / W 2为0.33〜3.0，其中W 1为白云石熟料中的CaO成分的质量％，W 2为质量％ MgO组分在氧化镁熟料中。

2. 发明授权

US07591976B2 Nozzle for use in continuous casting 失效
标题翻译：喷嘴用于连铸
公开(公告)号：US07591976B2
公开(公告)日：2009-09-22
申请号：US10592658
申请日：2005-03-14
申请人： Koji Ogata , Saeko Koga , Shinichi Fukunaga
发明人： Koji Ogata , Saeko Koga , Shinichi Fukunaga
IPC分类号： C21C5/44 , C21B7/02 , C21B7/04 , B22D41/00 , B22D41/50 , B22D35/00 , B22D37/00 , B22D11/10 , C04B35/03
CPC分类号： C04B35/6262 , B22D41/54 , C04B35/03
摘要： Disclosed is a continuous casting nozzle having a refractory portion formed to contain a dolomite clinker and arranged to define a surface region adapted to be in contact with molten steel, which is capable of protecting a working surface of the nozzle from alumina build-up due to alumina in molten steel, while improving corrosion resistance, even during long-term continuous casting of molten steel. The refractory portion is prepared by adding a binder to a mixed material and subjecting the obtained mixture to kneading, forming and heat treatment. The mixed material comprises a dolomite clinker which has an average particle size of 0.8 mm or less and a CaO content of 50 mass % or less. The mixed material has a ratio W1/W2 of 0.33 or more, wherein W1 is a content by mass of CaO, and W2 is a content by mass of MgO. The mixed material comprises a dolomite clinker and a magnesia clinker. Alternatively, the mixed material comprises a dolomite clinker and a magnesia clinker. The mixed material has a ratio WD/WM in the range of 0.5 to 15, wherein WD is a mass % of dolomite clinker particles having a particle size of 1 mm or less in a particle size distribution of the dolomite clinker, and WM is a mass % of magnesia clinker particles having a particle size of 1 mm or less in a particle size distribution of the magnesia clinker. Further, the mixed material has a ratio W1/W2 in the range of 0.33 to 3.0, wherein W1 is a content by mass % of a CaO component in the dolomite clinker, and W2 is a content by mass % of an MgO component in the magnesia clinker.
摘要翻译：公开了一种连续铸造喷嘴，其具有形成为容纳白云石熟料并且布置成限定适于与钢水接触的表面区域的耐火部分，其能够保护喷嘴的工作表面免于氧化铝堆积，这是由于氧化铝在钢水中，同时提高耐腐蚀性，即使在钢水的长期连续铸造中也是如此。通过将粘合剂添加到混合材料中并对所得到的混合物进行捏合，成形和热处理来制备耐火材料部分。混合材料包括平均粒度为0.8mm以下且CaO含量为50质量％以下的白云石熟料。混合材料的W1 / W2比为0.33以上，W1为质量百分比，W2为MgO的质量含量。混合材料包括白云石熟料和氧化镁熟料。或者，混合材料包括白云石熟料和氧化镁熟料。混合材料的WD / WM比为0.5〜15，其中WD为白云石熟料的粒度分布中粒径为1mm以下的白云石熟料颗粒的质量％，WM为在氧化镁熟料的粒度分布中，粒径为1mm以下的氧化镁熟料粒子的质量％。此外，混合材料的比例W1 / W2在0.33〜3.0的范围内，其中，W1是白云石熟料中CaO成分的质量％，W2是MgO成分的质量％镁砂熟料

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