Method for repairing blast furnace cooling stave

A technology for cooling staves and blast furnaces, applied in the direction of cooling devices, etc., can solve problems such as affecting blast furnace production, wasting manpower, material resources, and threatening blast furnace safety production.

Inactive Publication Date: 2009-06-17
TIANJIN TIANTIE METALLURGICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The four-stage stave is a smooth stave and is located in the furnace hearth, which has seriously threatened the safe production of the blast furnace
In order to maintain the original cooling intensity and ensure the normal production of the blast furnace, according to the ex

Method used

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  • Method for repairing blast furnace cooling stave
  • Method for repairing blast furnace cooling stave
  • Method for repairing blast furnace cooling stave

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specific Embodiment approach

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS: The present invention will be further described below in conjunction with the accompanying drawings.

[0019] The first step is preparatory work. according to figure 1 , figure 2 The shape of the stave and the fractured part 4 are shown, which are made in advance image 3 , Figure 4 Power drill stand shown.

[0020] The second step is to drill holes. Cut off the blast furnace skin 11 after the blast furnace is shut down, exposing such as figure 1 Damaged staves shown, according to Figure 5 As shown, the electric drill stand is welded and fixed to the blast furnace skin 11 through the connecting device 12 . according to Figure 6 As shown, the position of the serpentine pipe 3 in the stave is calibrated according to the stave manufacturing drawings. At the fractured part 4 of the stave, drill holes 17 and 18 with a φ20mm drill bit 9 to find the position of the serpentine pipe 3 in the stave. Since there is a ...

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Abstract

The invention relates to a method for repairing a damaged cooling wall of a blast furnace and is applicable to the blast furnace ironmaking production in the metallurgical industry. The invention aims at overcoming the disadvantage that the cooling wall is completely replaced after the blast furnace is blown down for a long time in the prior art, and provides a method for boring on a ruptured cooling wall by a self-made electric drill arranged on a rack, drilling through a coiler in the cooling wall, and then connecting the coiler with a hose to pass by a ruptured part to perform a water leakage test and a pressurizing test. The cooling wall repaired by the method can achieve the cooling intensity of a normal cooling wall in operation, thus ensuring the normal production of the blast furnace.

Description

Technical field: [0001] The invention relates to a method for repairing the damaged stave of the blast furnace during the ironmaking production process of the blast furnace in the metallurgical industry. Background technique: [0002] Blast furnace longevity is the goal pursued by modern blast furnaces, and the longevity of blast furnaces means the improvement of economic benefits. The cooling stave is the main equipment for blast furnace cooling, and the working condition of the stave directly affects the life of the blast furnace. The damage of the stave is an inevitable situation in the production process of the blast furnace. There are three ways to deal with the damage of the stave. First, reduce water or cut off water, which is not conducive to the enhanced smelting of the blast furnace and the life of the blast furnace; second, replace the stave as a whole, this method takes a long time to stop the wind, and the loss of output is large; The enterprise has had a prec...

Claims

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Application Information

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IPC IPC(8): C21B7/10B23P6/00
Inventor 刘瑞东庞顺清安国良李苗义
Owner TIANJIN TIANTIE METALLURGICAL GRP
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