Replacing method of blast furnace shell and water wall

A blast furnace shell and replacement method technology, which is applied in the direction of cooling devices, internal forms, inspection devices, etc., can solve the problems of affecting the utilization efficiency of blast furnaces, rapid replacement of blast furnace shells and water-cooled walls, and long maintenance and construction time, etc., to achieve saving Effects of machinery use and labor costs, shortened maintenance and construction time, and efficient replacement
CN101570802AActive Publication Date: 2009-11-04CHINA 19TH METALLURGICAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA 19TH METALLURGICAL CORP
Publication Date
2009-11-04

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Abstract

The invention discloses a rapid and efficient replacing method of a blast furnace shell and a water wall, which comprises the following steps: 1) installing support frames around the furnace body to prevent the furnace shell from sinking or slanting; 2) cutting the furnace shell which needs to be replaced, integratively removing the cut-out furnace shell and the water wall connected with the furnace shell; 3) installing a new furnace shell on the furnace body; and 4) after replacing the furnace shell, opening an inlet hole on the furnace shell, introducing the new water wall into the furnace body through the inlet hole and installing the new water wall on the inner wall of the furnace shell. The method directly and integratively removes the furnace shell and the water wall connected together and introduces the new water wall rapidly and conveniently into the furnace body, thus greatly shortening the repair and construction time, saving the use of mechanical devices and labor cost, and realizing rapid and efficient replacement of the blast furnace shell and water wall. The construction method of the invention in particular applies to small-sized blast furnaces with the volume of no more than 1000 cubic meters.
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Description

technical field

[0001] The invention relates to the field of blast furnace maintenance, in particular to a method for replacing a blast furnace shell and a water wall. Background technique

[0002] The temperature of molten steel in blast furnace ironmaking is above 1000°C. In order to prevent overheating and deformation of the furnace shell, a water-cooled wall is installed on the inner wall of the furnace shell as a partition layer between the furnace and the furnace shell to reduce the temperature of the furnace shell. The service life of the water-cooled wall varies according to the quality of the water-cooled wall, the use temperature and the quality of the cooling water. Once the cooling effect of the water-cooled wall is not good, it will cause the water-cooled wall to be burned, the furnace shell will be deformed, and the production will be affected. Therefore, after the blast furnace has been used for a period of time, it must be shut down for major and medium rep...

Claims

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