A platform for research: civil engineering, architecture and urbanism
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REFRACTORY FOR CONTINUOUS CASTING AND REFRACTORY MEMBER
To improve corrosion resistances and thermal shock resistances of a zirconia-carbonaceous refractory for continuous casting and of a refractory member.SOLUTION: A refractory for continuous casting is provided, including 8 mass% or more and 16 mass% or less of a free carbon component, and the balance including a zirconia component as a main component, and the refractory has less than 5 mass% of the total of contents of other components other than the free carbon component and the zirconia component. When a portion obtained by removing a structure composed of the free carbon component from the structure of the refractory is 100 vol.%, refractory particles each having a particle diameter of more than 0.3 mm are 5 vol.% or more, refractory particles each having a particle diameter of 0.045 mm or less are 5 vol.% or more and 40 vol.% or less, out of the refractory particles in the refractory, a substantially continuous void layer having a shape similar to the shape of coarse particles each having a maximum particle size exists around at least the coarse particles. Apparent porosity of the refractory is 16% or less, and a maximum thermal expansion coefficient up to 1,500°C thereof is 0.6% or less.SELECTED DRAWING: Figure 1
【課題】ジルコニア－炭素質の連続鋳造用の耐火物及び耐火物部材の耐食性及び耐熱衝撃性を向上させる。【解決手段】フリーの炭素成分を８質量％以上１６質量％以下含み、残部の主成分がジルコニア成分であり、かつ、フリーの炭素成分及びジルコニア成分以外のその他の成分の含有量が合計で５質量％未満である連続鋳造用の耐火物である。当該耐火物の構成物からフリーの炭素成分からなる構成物を除いた部分を１００体積％としたときに、粒径０．３ｍｍ超の耐火物粒子が５体積％以上、粒径０．０４５ｍｍ以下の耐火物粒子が５体積％以上４０体積％以下であり、当該耐火物中の耐火物粒子のうち、少なくとも最大粒子サイズの粗大粒子の周りに当該粗大粒子の形状に相似したほぼ連続した空隙層が存在する。当該耐火物の見掛気孔率は１６％以下であり、１５００℃までの最大の熱膨張率は０．６％以下である。【選択図】図１
REFRACTORY FOR CONTINUOUS CASTING AND REFRACTORY MEMBER
To improve corrosion resistances and thermal shock resistances of a zirconia-carbonaceous refractory for continuous casting and of a refractory member.SOLUTION: A refractory for continuous casting is provided, including 8 mass% or more and 16 mass% or less of a free carbon component, and the balance including a zirconia component as a main component, and the refractory has less than 5 mass% of the total of contents of other components other than the free carbon component and the zirconia component. When a portion obtained by removing a structure composed of the free carbon component from the structure of the refractory is 100 vol.%, refractory particles each having a particle diameter of more than 0.3 mm are 5 vol.% or more, refractory particles each having a particle diameter of 0.045 mm or less are 5 vol.% or more and 40 vol.% or less, out of the refractory particles in the refractory, a substantially continuous void layer having a shape similar to the shape of coarse particles each having a maximum particle size exists around at least the coarse particles. Apparent porosity of the refractory is 16% or less, and a maximum thermal expansion coefficient up to 1,500°C thereof is 0.6% or less.SELECTED DRAWING: Figure 1
【課題】ジルコニア－炭素質の連続鋳造用の耐火物及び耐火物部材の耐食性及び耐熱衝撃性を向上させる。【解決手段】フリーの炭素成分を８質量％以上１６質量％以下含み、残部の主成分がジルコニア成分であり、かつ、フリーの炭素成分及びジルコニア成分以外のその他の成分の含有量が合計で５質量％未満である連続鋳造用の耐火物である。当該耐火物の構成物からフリーの炭素成分からなる構成物を除いた部分を１００体積％としたときに、粒径０．３ｍｍ超の耐火物粒子が５体積％以上、粒径０．０４５ｍｍ以下の耐火物粒子が５体積％以上４０体積％以下であり、当該耐火物中の耐火物粒子のうち、少なくとも最大粒子サイズの粗大粒子の周りに当該粗大粒子の形状に相似したほぼ連続した空隙層が存在する。当該耐火物の見掛気孔率は１６％以下であり、１５００℃までの最大の熱膨張率は０．６％以下である。【選択図】図１
REFRACTORY FOR CONTINUOUS CASTING AND REFRACTORY MEMBER
連続鋳造用の耐火物及び耐火物部材
MATSUMOTO SHIGEFUMI (author) / LI LING (author) / TAKAMI KOHEI (author) / MORIKAWA KATSUMI (author) / IGATA TETSUO (author)
2023-09-14
Patent
Electronic Resource
Japanese
REFRACTORY PRODUCT FOR USE IN CONTINUOUS CASTING, AND REFRACTORY PRODUCT MEMBER
| European Patent Office | 2024
REFRACTORY PRODUCT FOR USE IN CONTINUOUS CASTING, AND REFRACTORY PRODUCT MEMBER
| European Patent Office | 2023