A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GRAPHITE-CONTAINING REFRACTORY, AND IRON-MAKING VESSEL HAVING THE GRAPHITE-CONTAINING REFRACTORY
To provide a graphite-containing refractory which can obtain high durability even if it is used under a condition that temperature rise and temperature fall are repeated over a long period, like a lining refractory such as a converter and a molten iron preliminary treatment vessel, and can obtain high durability even if it is used under a condition that an internal temperature gradient is extremely large, like a tuyere brick of a converter.SOLUTION: Carbon fiber fabrics B formed by knitting carbon fiber bundles b are knitted are embedded inside a refractory body A, the carbon fiber fabrics B contain an adhesive component c in the carbon fiber bundles b, an interval of the neighboring carbon fiber bundles b in the same direction which are adhered to or in closely contact with the refractory body A through the adhesive component c and constitute the carbon fiber fabrics B is larger than a maximum particle diameter of an aggregate constituting the refractory body A, and in a refractory cross section in a plane direction of the carbon fiber fabrics B, an area ratio occupied by the carbon fiber fabrics B to the refractory cross-sectional area is 20% or more.SELECTED DRAWING: Figure 1
【課題】転炉や溶銑予備処理容器などの内張り耐火物のように長期間にわたって昇温と降温が繰り返される条件で使用される場合でも高い耐用性が得られ、また、特に転炉の羽口煉瓦のように内部の温度勾配が非常に大きい条件で使用される場合でも高い耐用性が得られる黒鉛含有耐火物を提供する。【解決手段】耐火物本体Ａの内部に炭素繊維束ｂを編み込んだ炭素繊維織物Ｂが埋設され、この炭素繊維織物Ｂは、炭素繊維束ｂ内に接着剤成分ｃを含むとともに、耐火物本体Ａに対して接着剤成分ｃを介して接着または密着し、炭素繊維織物Ｂを構成する同じ方向の炭素繊維束ｂは、隣り合う炭素繊維束ｂの間隔が耐火物本体Ａを構成する骨材の最大粒径よりも大きく、炭素繊維織物Ｂの面方向での耐火物断面において、耐火物断面積に対する炭素繊維織物Ｂの占める面積割合が２０％以上である。【選択図】図１
GRAPHITE-CONTAINING REFRACTORY, AND IRON-MAKING VESSEL HAVING THE GRAPHITE-CONTAINING REFRACTORY
To provide a graphite-containing refractory which can obtain high durability even if it is used under a condition that temperature rise and temperature fall are repeated over a long period, like a lining refractory such as a converter and a molten iron preliminary treatment vessel, and can obtain high durability even if it is used under a condition that an internal temperature gradient is extremely large, like a tuyere brick of a converter.SOLUTION: Carbon fiber fabrics B formed by knitting carbon fiber bundles b are knitted are embedded inside a refractory body A, the carbon fiber fabrics B contain an adhesive component c in the carbon fiber bundles b, an interval of the neighboring carbon fiber bundles b in the same direction which are adhered to or in closely contact with the refractory body A through the adhesive component c and constitute the carbon fiber fabrics B is larger than a maximum particle diameter of an aggregate constituting the refractory body A, and in a refractory cross section in a plane direction of the carbon fiber fabrics B, an area ratio occupied by the carbon fiber fabrics B to the refractory cross-sectional area is 20% or more.SELECTED DRAWING: Figure 1
【課題】転炉や溶銑予備処理容器などの内張り耐火物のように長期間にわたって昇温と降温が繰り返される条件で使用される場合でも高い耐用性が得られ、また、特に転炉の羽口煉瓦のように内部の温度勾配が非常に大きい条件で使用される場合でも高い耐用性が得られる黒鉛含有耐火物を提供する。【解決手段】耐火物本体Ａの内部に炭素繊維束ｂを編み込んだ炭素繊維織物Ｂが埋設され、この炭素繊維織物Ｂは、炭素繊維束ｂ内に接着剤成分ｃを含むとともに、耐火物本体Ａに対して接着剤成分ｃを介して接着または密着し、炭素繊維織物Ｂを構成する同じ方向の炭素繊維束ｂは、隣り合う炭素繊維束ｂの間隔が耐火物本体Ａを構成する骨材の最大粒径よりも大きく、炭素繊維織物Ｂの面方向での耐火物断面において、耐火物断面積に対する炭素繊維織物Ｂの占める面積割合が２０％以上である。【選択図】図１
GRAPHITE-CONTAINING REFRACTORY, AND IRON-MAKING VESSEL HAVING THE GRAPHITE-CONTAINING REFRACTORY
黒鉛含有耐火物、および黒鉛含有耐火物を備えた製鉄容器
YOSHIDA KEISUKE (author)
2023-09-20
Patent
Electronic Resource
Japanese
GRAPHITE-CONTAINING REFRACTORY AND METHOD OF PRODUCING GRAPHITE-CONTAINING REFRACTORY
| European Patent Office | 2019
Graphite-containing refractory and method of producing graphite-containing refractory
| European Patent Office | 2021
GRAPHITE-CONTAINING REFRACTORY AND METHOD OF PRODUCING GRAPHITE-CONTAINING REFRACTORY
| European Patent Office | 2021