Title:
黒鉛含有耐火物
Document Type and Number:
Japanese Patent JP6974801
Kind Code:
B2
Abstract:
To provide a graphite-containing refractory in which the spread of crack generating by heat stress is suppressed, and high durability is obtained even when it is used under such a condition that the temperature rising and dropping are repeated for a long term like the lining refractory of a converter, or that an inside temperature gradient is extremely large, particularly like a tuyere brick of the converter.SOLUTION: There is provided a graphite-containing refractory in which a carbon fiber fabric y of 40 to 1,300 g in mass per 1 m2 is adhered to at least a part of the surface of a refractory body x having a graphite content of 1 to 80 mass% via an adhesive-hardening material a. The difference between the thermal expansion coefficient of the adhesive-hardening material a and that of the refractory body x when rising a temperature from normal temperature to 1,000°C is 2.0% or less, and the difference between the residual expansion coefficient of the adhesive-hardening material a and that of the refractory body x when lowering the temperature from 1,000°C to the normal temperature is also 2.0% or less.SELECTED DRAWING: Figure 1
Inventors:
Keisuke Yoshida
Daisuke Kondo
Hisahiro Matsunaga
Daisuke Kondo
Hisahiro Matsunaga
Application Number:
JP2019057751A
Publication Date:
December 01, 2021
Filing Date:
March 26, 2019
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C04B35/52; B32B18/00; C04B35/043; C04B35/103; C04B35/622; C04B35/80; C21C5/48; F27D1/06
Domestic Patent References:
| JP9110540A | ||||
| JP2007106618A | ||||
| JP11337267A | ||||
| JP7206535A | ||||
| JP59156971A |
Attorney, Agent or Firm:
Hideto Tomabechi