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Method for patching side wall of dilution electric furnace

A technology for depleting electric furnaces and side walls, applied in the field of metallurgy, can solve the problems of affecting the service life of electric furnaces, high cost, rapid damage, etc., and achieve the effects of shortening the maintenance period, prolonging the service life and reducing consumption.

Active Publication Date: 2019-12-13
CHUXIONG DIANZHONG NONFERROUS METALS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] During the production process of the depleted electric furnace, the lining refractory brick at the position of the slag line is washed by high temperature, and the damage is rapid, and the position of the slag line is easy to form "pit", which affects the service life of the electric furnace
At present, most of the bricks in the whole furnace are replaced, and the power of the electric furnace electrode must be increased to reduce the freezing and thawing of the furnace to the bottom of the furnace, which takes a long time (about 20 days) and costs a lot.

Method used

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  • Method for patching side wall of dilution electric furnace

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Embodiment

[0022] A method for digging and repairing the side wall of a dilute electric furnace, specifically comprising the following steps:

[0023] 1) Increase the temperature control in the furnace before stopping the furnace to reduce the freezing in the furnace to below the slag line.

[0024] 2) After the furnace is shut down, open the working door of the side wall to cool down, remove 8 layers of refractory bricks in the working door hole, and the cooling time of the furnace shutdown is 7 days. Enter the furnace to set up a whole house of scaffolding, and lay 7000×300×40mm wooden boards on the top to ensure the safety of working in the furnace.

[0025] 3) The position of the slag line is excavated and repaired by demolition and masonry: remove the refractory brick at the position of the slag line along the lower edge of each work door, and only remove one refractory brick facing the furnace during demolition. ×150×75mm. For each demolition, remove 15 refractory bricks: remove ...

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Abstract

The invention relates to a method for patching a side wall of a dilution electric furnace and belongs to the technical field of metallurgy. According to the method for patching the side wall of the dilution electric furnace, in-furnace temperature control is improved before blowing out of the furnace is conducted; in-furnace freezing is lowered to below the slag line position; after blowing out ofthe furnace is conducted, in-furnace cooling is conducted, and a manner of disassembling while masoning is adopted by patching in the slag line position till patching and replacing of furnace bricksin the slag line position is finished. By means of the method for patching the side wall of the dilution electric furnace, the dilution electric furnace can be mended rapidly; the furnace top structure is not influenced; the repair period is effectively shortened; and the production cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for digging and repairing the side wall of a dilute electric furnace. Background technique [0002] During the production process of the depleted electric furnace, the lining refractory brick at the position of the slag line is washed by high temperature, and the damage is rapid, and the position of the slag line is easy to form "pit", which affects the service life of the electric furnace. At present, most of the bricks are replaced by the whole furnace, and the power of the electric furnace electrode must be increased to reduce the freezing and thawing of the furnace to the bottom of the furnace, which takes a long time (about 20 days) and costs a lot. Contents of the invention [0003] In order to overcome the problems existing in the background technology, the present invention provides a dredging method for diluting the side wall of an electric furn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/16
CPCF27D1/16F27D1/1621F27D2001/1605
Inventor 熊国海杨柱李江平王春华惠兴欢朱江张鑫张建波高荣
Owner CHUXIONG DIANZHONG NONFERROUS METALS CO LTD
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