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Hot repairing method of steel ladle air brick

A technology of permeable bricks and hot repair, applied in casting melt containers, metal processing equipment, casting equipment, etc., can solve the problems of molten steel easily infiltrating into voids, inconsistent life, cold steel and other problems, and improve the rate of argon blowing. , The effect of reducing production delays and improving service life

Active Publication Date: 2010-09-29
ANGANG STEEL CO LTD
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AI Technical Summary

Problems solved by technology

The service life of the two is inconsistent. The breathable bricks of the large tank are gradually consumed during the use of argon blowing. When the length is insufficient, they need to be replaced. Generally, the service life of the externally installed breathable bricks is 3 to 6 times.
After several times of use, the breathable bricks will sink to form gaps. On the one hand, molten steel can easily penetrate into the gaps, which can easily lead to steel leakage accidents. On the other hand, the breathable bricks are concave. , resulting in large tank blowing argon and not being able to fold the tank

Method used

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Embodiment Construction

[0009] A method for hot-repairing a ladle air-permeable brick. The method is to use a repair material to heat-repair the sunken air-permeable brick when the air-permeable brick is sunken, use the heat of the ladle itself to quickly sinter the repair material, and use the dispersive air permeability of the sintered repair material Guaranteed breathability. The sintering temperature is 800-1200°C.

[0010] The air-permeable brick heat repair compound used in the present invention has good air permeability and thermal stability, which is equivalent to the combination of the slit-type air-permeable brick and the diffuse-type air-permeable brick.

[0011] The breathable brick heat repair material is used to quickly heat repair the sunken breathable brick, and the repair material is quickly sintered by the heat of the large tank itself, which is resistant to erosion and does not float up. The diffuse air permeability of the sintered repair material is used to ensure the breathable e...

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Abstract

The invention relates to a hot repairing method of a steel ladle air brick, comprising the following steps: under the condition that the air brick is depressed, adopting a repairing material to carry out hot repairing on the depressed air brick, utilizing the self heat energy of a steel ladle to sinter the repairing material quickly, and utilizing the dispersed air permeability of the sintered repairing material to guarantee the effect of air permeability. The hot repairing method has the advantages of being simple and convenient in operation, effectively prolonging the service life of the air brick and argon-blowing turning up rate, simultaneously effectively avoiding the occurrence of the bleed-out accidents of the steel ladle, reducing the production delay and equipment loss due to the accidents and also reducing the cost.

Description

technical field [0001] The invention relates to a preparation process of a ladle air-permeable brick. Background technique [0002] At present, domestic iron and steel plants generally use air-permeable bricks and air-permeable seat bricks for separate installation. The service life of the two is inconsistent. The breathable bricks of the large tank are gradually consumed during the use of argon blowing, and need to be replaced when the length is insufficient. Generally, the service life of the externally installed breathable bricks is 3 to 6 times. After several times of use, the breathable bricks will sink to form gaps. On the one hand, molten steel can easily penetrate into the gaps, which can easily lead to steel leakage accidents. On the other hand, the breathable bricks are concave. , causing the large tank to blow argon and not be able to fold the tank. Contents of the invention [0003] The purpose of the present invention is to provide a hot repair method for th...

Claims

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Application Information

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IPC IPC(8): B22D41/02
Inventor 邢贵彬白鹏李泽林徐向阳田勇
Owner ANGANG STEEL CO LTD
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