| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for repairing a coke oven by partial replacement, in which an expansion absorption margin is made proper without using a ceramic board.SOLUTION: When bricks for forming a flue of a combustion chamber of the coke oven are repaired by replacement while leaving a ceiling part 1 as it is, the temperature of a carbonization chamber-side wall of the flue that is connected to the flue to be repaired and is not to be repaired, and the temperature of the opposed side to the wall of the flue to be repaired that is adjacent to the flue to be repaired is retained at the temperature equal to or higher than 400°C. In a horizontal-direction joint 3 of the brick to be replaced, used is mortal which has 30% or higher linear shrinkage rate under 0.1 MPa load and 100-800°C temperature range. The thickness and the number of layers of the mortar are set and the mortar is disposed so that the thickness of the mortar per one place of the joint is lower than the projection height of a convex dowel part of the brick. An amorphous refractory material having 5 MPa or higher bending strength after hardened and dried is used in a connection part of the remaining ceiling part 1 to a newly-replaced portion. |
