A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GRAPHITE-CONTAINING REFRACTORY
To provide graphite-containing refractory having high durability by suppressing crack development caused by thermal stress, even when used in a condition of repeated heating up and cooling down over a long time, like the refractory liner of a converter, and having high durability, even when used in a condition of very large inner temperature gradient, particularly like tuyere bricks of the converter.SOLUTION: There is provided graphite-containing refractory in which carbon fiber fabric B is embedded along one direction, inside a refractory body A containing 1-80 mass% of graphite. The carbon fiber fabric B has mass of 40-1300 g per 1 m2, preferably, existing density of the carbon fiber forming the carbon fiber fabric B, in the refractory cross section parallel to a refractory work face, is 10-2000 pieces/mm2.SELECTED DRAWING: Figure 1
【課題】転炉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、熱応力により発生する亀裂の進展が抑制されて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】黒鉛含有量が１～８０質量％の耐火物本体Aの内部に、一方向に沿って炭素繊維織物Bが埋設された黒鉛含有耐火物であって、炭素繊維織物Bは１ｍ２あたりの質量が４０～１３００ｇであり、好ましくは、耐火物稼働面と平行な耐火物断面における、炭素繊維織物Bを構成する炭素繊維の存在密度が１０～２０００本／ｍｍ２である。【選択図】図１
GRAPHITE-CONTAINING REFRACTORY
To provide graphite-containing refractory having high durability by suppressing crack development caused by thermal stress, even when used in a condition of repeated heating up and cooling down over a long time, like the refractory liner of a converter, and having high durability, even when used in a condition of very large inner temperature gradient, particularly like tuyere bricks of the converter.SOLUTION: There is provided graphite-containing refractory in which carbon fiber fabric B is embedded along one direction, inside a refractory body A containing 1-80 mass% of graphite. The carbon fiber fabric B has mass of 40-1300 g per 1 m2, preferably, existing density of the carbon fiber forming the carbon fiber fabric B, in the refractory cross section parallel to a refractory work face, is 10-2000 pieces/mm2.SELECTED DRAWING: Figure 1
【課題】転炉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、熱応力により発生する亀裂の進展が抑制されて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】黒鉛含有量が１～８０質量％の耐火物本体Aの内部に、一方向に沿って炭素繊維織物Bが埋設された黒鉛含有耐火物であって、炭素繊維織物Bは１ｍ２あたりの質量が４０～１３００ｇであり、好ましくは、耐火物稼働面と平行な耐火物断面における、炭素繊維織物Bを構成する炭素繊維の存在密度が１０～２０００本／ｍｍ２である。【選択図】図１
GRAPHITE-CONTAINING REFRACTORY
黒鉛含有耐火物
YOSHIDA KEISUKE (author) / MATSUNAGA HISAHIRO (author)
2023-11-22
Patent
Electronic Resource
Japanese
IPC:
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
/
C04B
Kalk
,
LIME
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