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    HIGH ZIRCONIA REFRACTORY PRODUCT
    51.
    发明公开
    HIGH ZIRCONIA REFRACTORY PRODUCT 审中-公开
    高锆石耐火材料产品

    公开(公告)号：EP2626340A1

    公开(公告)日：2013-08-14

    申请号：EP11830718.0

    申请日：2011-10-05

    申请人： Asahi Glass Company, Limited

    发明人： TOMURA, Nobuo ,  SATO, Hironori

    IPC分类号： C04B35/657 ,  C03B5/43

    CPC分类号： F27D1/0006 ,  C03B5/43 ,  C04B35/484 ,  C04B35/657 ,  C04B2235/3201 ,  C04B2235/3213 ,  C04B2235/3244 ,  C04B2235/34 ,  C04B2235/3409 ,  C04B2235/3418 ,  Y02P40/57

    摘要： To provide a high zirconia fused cast refractory which hardly has cracks, and has excellent durability and reusability, at the time of production of the refractory and during use for a glass melting furnace.
    A high zirconia fused cast refractory which has a chemical composition comprising from 85 to 95 mass% of ZrO 2 , at least 2.5 mass% of SiO 2 , at most 0.04 mass% of Na 2 O, at most 0.04 mass% of B 2 O 3 , and at most 0.04 mass% of P 2 O 5 , containing SrO as an essential component, and containing at least one of K 2 O and Cs 2 O, wherein contents of SrO, K 2 O and Cs 2 O satisfy the relations of the following formula (1) and (2) at the same time: 0.20 ≦ 0.638 × C K ⁢ 20 + 0.213 × C Cs ⁢ 20 + 0.580 × C SrO / C SiO ⁢ 2 ≦ 0.40 0.10 ≦ 0.580 × C SrO / C SiO ⁢ 2
    wherein C K2O is the content (mass%) of K 2 O in the fused cast refractory, C Cs2O is the content (mass%) of Cs 2 O in the fused cast refractory, C SrO is the content (mass%) of SrO in the fused cast refractory, and C SiO2 is the content (mass) of SiO 2 in the fused cast refractory.

    摘要翻译： 本发明提供耐火物制造时和玻璃熔窑的使用时难以产生裂纹，耐久性和再利用性优异的高氧化锆质电熔耐火物。 1。一种高氧化锆质电熔耐火物，其特征在于，含有85〜95质量％的ZrO 2，至少2.5质量％的SiO 2，0.04质量％以下的Na 2 O，0.04质量％以下的B 2 O 3以及0.04质量％ 以SrO为必要成分，含有K2O和Cs2O中的至少一种的P2O5的含量，其中，SrO，K2O和Cs2O的含量同时满足下式（1）和（2）的关系：0.20≤ 0.638×CK20 + 0.213×CCs20 + 0.580×CSrO /CSiO2≤0.400.10≤0.580×CSrO / CSiO2其中CK2O是电熔耐火材料中K2O的含量（质量％），CCs2O是 Cs 2 O在熔铸耐火材料中的含量（质量％），CSrO是熔铸耐火材料中SrO的含量（质量％），CSiO 2是熔铸耐火材料中SiO 2的含量（质量）。