Method for replacing whole circle of blast furnace copper cooling wall without entering people

Abstract

The invention belongs to the field of blast furnace cooling wall replacement, and particularly relates to a method for replacing a whole circle of blast furnace copper cooling wall without entering people. According to the method, two symmetrical access holes are dug in a cooling wall furnace shell near a platform located above an old cooling wall to be dismantled to serve as a conveying channel of the cooling wall; water spraying guns uniformly arranged on a frustum of a furnace top are dismantled, and corresponding electric chain blocks and electric chain block chains are hung by utilizing water gun mounting holes and large square holes of the furnace top; the old cooling wall is detached and poured out from the outside of the furnace shell, and then a new cooling wall is installed; the diameter of a new cooling wall water pipe sleeve is reduced, the influence of refractory materials between the original furnace shell and the cooling wall on installation is reduced, and mud jacking sealing of the cold face of the cooling wall is guaranteed. According to the method, the danger caused by the influence of adverse factors such as coal gas, high temperature and objects falling from high altitudes can be greatly reduced by adopting a replacement mode that people do not enter the furnace; and residual iron slag in the furnace is not removed, so that the construction time can be greatly shortened.

Description

technical field [0001] The invention belongs to the field of replacement of blast furnace cooling staves, in particular to a method for replacing a whole circle of blast furnace copper cooling staves without entering a person. Background technique [0002] Blast furnace production has the characteristics of continuous, high temperature and high pressure, and the quality of stave is the key factor related to the safe production of blast furnace. With the arrival of the first generation of blast furnace age, the copper cooling stave at the furnace waist of the blast furnace is affected by the blanking in the furnace, the wall thickness is severely worn, and the furnace condition fluctuates, which is very easy to cause damage to the water pipes, and more and more. After the stave water pipe is damaged, the blast furnace process is generally adopted to shut off the air, and the two ends of the part of the damaged stave exposed outside the furnace shell are cut off, and then the ...

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Problems solved by technology

[0014] This method does not involve how to pull and install the stave when hoisting the new stave, how to remove the hook after the installation is completed, and how to remove the furnace shell and stave The refractory materials that cannot be completely cleaned up will affect the installation. At the same time, there is no relevant situation when replacing the cooling wall of the blast furnace.

[0015] To sum up, in the published documents searched, there is no related technology of replacing the entire circle of copper staves without entering the blast furnace

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