公开(公告)号：US20220388910A1

公开(公告)日：2022-12-08

申请号：US17770387

申请日：2020-10-23

申请人： KROSAKIHARIMA CORPORATION

发明人： Ling LI ,  Katsumi MORIKAWA ,  Akinari SASAKI ,  Shigefumi MATSUMOTO

IPC分类号： C04B35/484 ,  C04B35/057 ,  C04B35/653 ,  C04B41/50 ,  C04B41/87 ,  B22D11/10

摘要： Provided is a ZrO2—CaO—C based refractory material which is capable of maintaining high adhesion resistance over a long period of time, while exhibiting significant slaking resistance, and suppressing self-fluxing, i.e., exhibiting corrosion-erosion resistance. The refractory material comprises a CaO—ZrO2 composition containing a CaO component in an amount of 40% by mass to 60% by mass, wherein a mass ratio of the CaO component to a ZrO2 component is 0.67 to 1.5, and wherein the CaO—ZrO2 composition includes a eutectic microstructure of CaO crystals and CaZrO3 crystals, wherein a width of each of the CaO crystals observable in a cross-sectional microstructure is 50 μm or less.

公开(公告)号：US20160297003A1

公开(公告)日：2016-10-13

申请号：US14777909

申请日：2014-03-19

申请人： KROSAKIHARIMA CORPORATION

发明人： Katsumi MORIKAWA ,  Akinari SASAKI ,  Taro MAKINO ,  Ling LI

IPC分类号： B22D41/54 ,  C04B35/01 ,  C04B35/043

CPC分类号： B22D41/54 ,  C04B35/013 ,  C04B35/043 ,  C04B35/0435 ,  C04B35/106 ,  C04B35/482 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/34 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/3821 ,  C04B2235/3826 ,  C04B2235/401 ,  C04B2235/402 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/428 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5472 ,  C04B2235/72 ,  C04B2235/9607

摘要： Provided is a refractory material having both excellent erosion/corrosion resistance and thermal shock resistance, which has hardly been obtainable by conventional techniques, and a casting nozzle using the refractory material. The refractory material of the present invention contains: MgO in an amount of 40 mass % or more; a free carbon component in an amount of 4 to 30 mass %; and one or more selected from the group consisting of B2O3, P2O5, SiO2 and TiO2, in a total amount of 0.3 to 3 mass %, with the remainder being at least one other type of additional refractory component, wherein a void layer exists in an interface between a carbon-containing matrix microstructure residing at least on opposite sides of a maximum-size one of a plurality of MgO-containing particles in the refractory material, and the maximum-size MgO-containing particle, wherein a sum of respective thicknesses of the void layer at two positions on the opposite sides is 0.2 to 3.0% in terms of a ratio with respect to a particle size of the maximum-size MgO-containing particle, and wherein an inorganic compound comprised of MgO and the one or more selected from the group consisting of B2O3, P2O5, SiO2 and TiO2 exists in an entirety or a part of a surface of each of the plurality of MgO-containing particles.

摘要翻译： 本发明提供耐腐蚀性，耐热冲击性优异的耐火材料，通过现有技术难以获得的耐火材料，以及使用该耐火材料的铸造用喷嘴。 本发明的耐火材料含有：40质量％以上的MgO， 4质量％以上的游离碳成分; 和选自B 2 O 3，P 2 O 5，SiO 2和TiO 2的一种或多种，​​总量为0.3〜3质量％，其余为至少一种其它类型的附加难熔成分，其中空隙层存在于 位于至少位于耐火材料中的多个含MgO颗粒中的最大尺寸的一个的相对侧上的含碳基体微结构和最大尺寸的含MgO颗粒之间的界面，其中， 在相对侧的两个位置的空隙层的比例相对于最大尺寸的含MgO颗粒的粒径的比率为0.2〜3.0％，其中由MgO组成的无机化合物和选自 从由B 2 O 3，P 2 O 5，SiO 2和TiO 2组成的组中，存在于多个含MgO颗粒中的每一个的整个或部分表面。