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    High-zirconia electrocast refractory and method for manufacturing the same
    2.
    发明授权
    High-zirconia electrocast refractory and method for manufacturing the same 有权

    公开(公告)号：US10815155B2

    公开(公告)日：2020-10-27

    申请号：US16124913

    申请日：2018-09-07

    Applicant: AGC CERAMICS CO., LTD.

    Inventor： Kenji Matano ,  Nobuo Tomura

    IPC: C04B35/484 ,  C03B5/43 ,  C04B35/05 ,  C04B35/48 ,  F27D1/00 ,  C04B35/66 ,  C04B35/657

    Abstract: To provide a high-zirconia electrocast refractory in which occurrence of cracks in manufacture and occurrence of cracks in use as a furnace material is further reduced while maintaining extremely high corrosion resistance to molten glass. The high-zirconia electrocast refractory contains 96.7 to 98.5 mass % of ZrO2, 0.8 to 2.7 mass % of SiO2, 0 to 0.2 mass % of Na2O, 0.21 to 1 mass % of K2O, 0.1 to 0.4 mass % of Al2O3, and does not substantially contain B2O3, in terms of oxide, as a chemical composition, wherein contents of the Na2O and the K2O satisfy a relation of following Formula (1) 0.15 mass %≤CK2O/2+CNa2O≤0.6 mass %  (1) where CK2O is the content of K2O and CNa2O is the content of Na2O, and each of the contents is expressed by mass % in the refractory.

    High zirconia fused cast refractory
    8.
    发明授权
    High zirconia fused cast refractory 失效
    高氧化锆熔融耐火材料

    公开(公告)号：US08563453B2

    公开(公告)日：2013-10-22

    申请号：US13840040

    申请日：2013-03-15

    Applicant: Asahi Glass Company, Limited

    Inventor： Nobuo Tomura ,  Hironori Sato

    IPC: C04B35/484

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

    Abstract: 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 ZrO2, at least 2.5 mass % of SiO2, at most 0.04 mass % of Na2O, at most 0.04 mass % of B2O3, and at most 0.04 mass % of P2O5, containing SrO as an essential component, and containing at least one of K2O and Cs2O, wherein contents of SrO, K2O and Cs2O satisfy the relations of the following formula (1) and (2) at the same time: 0.20≦[0.638×CK2O+0.213×CCs2O+0.580×CSrO]/CSiO2≦0.40  (1) 0.10≦0.580×CSrO/CSiO2  (2)

    Abstract translation: 为了提供在耐火材料制造时和玻璃熔化炉的使用时难以产生裂纹的高耐久性和再利用性的高的氧化锆熔融铸造耐火材料。 具有85〜95质量％的ZrO 2，2.5重量％以上的SiO 2，0.04重量％以下的Na 2 O，0.04重量％以下的B 2 O 3和0.04质量％以下的高氧化锆熔融耐火材料 ％的含有SrO作为必需成分的P2O5，并含有K2O和Cs2O中的至少一种，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×CK2O + 0.213×CCs2O + 0.580×CSrO] /CSiO2@0.40（1）0.10@0.580×CSrO/CSiO2（2）

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