Deep maintenance method on coke-oven charcoal bottom bricks

Abstract

The invention relates to a deep maintenance method on coke-oven charcoal bottom bricks. The method comprises the following steps: (1) controlling the oven temperature; (2) carrying out thermal insulation and maintaining the temperature at 850 DEG C; (3) adding an interval type roof protection; (4) applying a safety protection technology for constructors in a limited space; (5) controlling the construction quality of charcoal bottom bricks; (6) applying a furnace end silicon brick thermal insulation and gap treatment technology, constructing the furnace ends on the machine side and the coke side, grouting; (7) applying a whole discharge charcoal bottom brick buffer protection technology, carrying out maintenance and temperature rising control after the construction; (8) carrying out a buffer protection control when the coke-oven is used for production for the first time. The method solves the problems that operators cannot enter a small and high temperature space, and replaces the common silicon bricks, which is easy to explode at a high temperature, with zero-expansion silicon bricks. At the same time, the great oven temperature rising is avoided, the construction brick quality is guaranteed, the service life of coke oven body is prolonged, the construction speed is fast, the maintenance time is greatly shortened, the labor strength is reduced, and the safety of constructors is guaranteed.

Description

technical field [0001] The invention relates to a maintenance method for coke oven carbon bottom bricks, in particular to a method for repairing carbon bottom bricks at temperatures above 850°C. [0002] In this state, operators enter the center of the coke oven carbonization chamber for deep maintenance of coke oven carbon bottom bricks. [0003] Background technique [0004] The whole row of carbon bottom bricks in the carbonization chamber of the Meishan Iron and Steel Coking Oven was severely damaged. The production of the chamber is shut down, and it seriously affects the production capacity of the adjacent carbonization chamber. The quality of maintenance construction is directly related to whether the follow-up production can be carried out stably, related to the service life of the carbonization chamber and adjacent carbonization chambers, and may even cause the carbonization chamber to fail to produce. The carbon bottom bricks of most coke ovens in China are part...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction technique for building a whole row of carbon bottom bricks with zero-expansion silica bricks when workers enter the carbonization chamber at a temperature above 850°C, mainly to solve the traditional repair technology for the damage of the whole row of carbon bottom bricks in the carbonization chamber intractable problem

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