Sealing method of blast furnace cooling wall joint and its used sealing part

Abstract

The present invention relates to a sealing method of blast furnace cooling wall joint and its special-purpose seal component. Said method includes the following steps: firstly, providing a seal component, its width and length are correspondent to the size of blast furnace cooling wall joint; utilizing stainless steel wire to tie two spaced steel bars on the seal component, the length of said steel bar is identical to that of seal component; butt-jointing cooling wall and cooling wall, utilizing welding electrode to spot-weld and connect the above-mentioned two steel bars ad cooling wall self-body together so as to make the seal component and cooling wall be jointed together.

Description

technical field [0001] The invention belongs to the technical field of installation of blast furnace staves, and more specifically relates to a method for sealing joints of blast furnace staves and a sealing member used therein. Background technique [0002] Usually, after stave installation of stave blast furnace, there are gaps between staves due to the requirement of stave installation process, for example, the gap between staves of Baosteel No. At the same time, there is also a gap between the stave and the furnace shell, and high thermal conductivity refractory materials need to be pressed in to ensure a good cooling effect of the stave and prevent the blast furnace gas from flowing into the furnace shell, causing the temperature of the iron shell to rise. In order to ensure the normal operation of pressing the refractory material, the joints between the staves must be sealed, otherwise it will be difficult to press the refractory material into the back of the stave. ...

AI Technical Summary

Problems solved by technology

[0004] The seam sealing of staves in the infrastructure is carried out in the blast furnace. Once the blast furnace takes advantage of the scheduled repair time (the conventional wind-off time is 24 hours, and the replacement of damaged staves in thermal state is controlled within 100 hours), the thermal state of damaged staves will be implemented. Replacement, because the temperature in the furnace is generally above 200°C, and the gas concentration is above 1000ppm, there is a great potential safety hazard, and there is no time or condition to build a construction platform in the furnace for construction personnel to work in the furnace, so the conventional infrastructure The technology used cannot be implemented

At the same time, since the stave is partially replaced, and there are still old staves around, if flat steel is welded on the new stave in advance (the welding of steel and cast iron is still very difficult), it will affect the placement of the new stave

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