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Electric stove wall operational layer brick maintenance method

A working layer and electric furnace technology, which is applied in the maintenance field of electric furnaces for steelmaking furnaces, can solve the problems of reducing the use time of electric furnaces and idleness of electric furnaces, so as to reduce the time for medium repair and overhaul, reduce the consumption of refractory materials per ton of steel, and increase the use time Effect

Active Publication Date: 2008-07-09
MCC BAOSTEEL TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the medium repair and overhaul of the electric furnace, the electric furnace must stop working, which will cause the electric furnace to be idle and reduce the actual use time of the electric furnace

Method used

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  • Electric stove wall operational layer brick maintenance method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1. The method for maintaining bricks on the working layer of the electric furnace wall. For a double-furnace electric furnace, when the age of the furnace is 5 furnaces, the oxygen lance position of the electric furnace and both sides of the furnace door are sprayed; when the age of the furnace is between 31 and 100 furnaces , Since the furnace age of the 31st furnace is increased by 2 furnaces, the oxygen lance position and the furnace lining are gunned once; the amount of gunning material is 0.5 tons each time. When the age of the furnace is between 101 and 300 furnaces, every time the furnace age increases from the 101st furnace by 3 furnaces, the oxygen gun position and the furnace door are gunned once, and the amount of gunning material is 1 ton each time, and the slag line brick after gunning Not naked. When the furnace age is between 301 and 500 furnaces, every time the furnace age increases from the 301st furnace, the bricks in the working layer are s...

Embodiment 2

[0023] For the double-furnace electric furnace, when the age of the furnace is 15 furnaces, the oxygen lance position of the electric furnace and both sides of the furnace door are sprayed, and the remaining methods are the same as in Example 1.

[0024] For a single-furnace electric furnace, when the age of the furnace is 15 furnaces, the oxygen lance position of the electric furnace and both sides of the furnace door are sprayed once, and the rest of the method is the same as that of implementation 1.

Embodiment 3

[0026] For the double-furnace electric furnace, when the furnace age is 25 furnaces, the oxygen lance position of the electric furnace and both sides of the furnace door are sprayed, and the rest of the methods are the same as in Example 1.

[0027] For a single-furnace electric furnace, when the age of the furnace is 25 furnaces, spray the oxygen lance position of the electric furnace and both sides of the furnace door once, and the rest of the method is the same as that of implementation 1.

[0028] The table below shows the electric furnace consumption and maintenance information of Baosteel Group in 2005 and 2006. The method of the present invention was not used in 2005, and the method of the present invention was used in 2006.

[0029]

[0030] Direct benefits: (14.86-12.87) × 100 = 199 (10,000 yuan) (based on an annual steel output of 1 million tons)

[0031] Indirect benefits: In 2006, the furnace age of the electric furnace reached 1935. The annual furnace repair ti...

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Abstract

The invention discloses a method for maintaining working layer bricks on electric furnace wall. The used maintenance method is determined according to dual-furnace or single-furnace of the electric furnace, and spray repair is performed to different sites of different furnaces (furnace life). The inventive method can be used for maintaining working layer bricks on the electric furnace wall for steel. By implementing the inventive method, the furnace life interval of medium repair and heavy repair is increased, the medium repair and heavy repair time is reduced, the actual service life of the electric furnace is increased, and the consumption of durable materials and steels is reduced.

Description

technical field [0001] The invention relates to a method for maintaining an electric furnace of a steelmaking furnace. Background technique [0002] At present, the maintenance of electric furnaces in advanced steel mills in the world can achieve intermediate repairs for furnaces with a furnace age of 700 furnaces, and major repairs for furnaces with a furnace age of more than 2,000 furnaces. Moreover, with the increasingly fierce competition among iron and steel enterprises, the potential for cost reduction is constantly being tapped It is the development trend of electric furnace smelting equipment in steel mills in the world to continue to carry out technical research to safely increase the furnace life. [0003] Several relatively large iron and steel production enterprises in China have built various types of electric furnaces. Among them, Handan Wugang and Tianjin Steel Pipe Co., Ltd. are representative. The 800 furnace was overhauled. Baosteel Electric Furnace curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/16
Inventor 邹新辉陆永刚陈颖张建军宋玉泉蔡祥明李锐
Owner MCC BAOSTEEL TECH SERVICE