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Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base

A technology of clustered oxygen lances and large clustered oxygen lances, which is applied in the field of metallurgy, can solve problems such as erosion and leakage of water cooling plates under the lances, and achieve the effects of saving equipment costs, increasing furnace life, and reducing erosion consumption

Inactive Publication Date: 2010-05-19
NANJING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the above prior art, a water leakage prevention method for the electric furnace cluster oxygen lance holder and the water cooling plate under the gun is proposed, which can solve the water leakage of the electric furnace cluster oxygen lance holder and the water cooling plate under the gun solve the problem of severe lining erosion under the cluster oxygen lance, and reduce furnace wear-through accidents

Method used

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Examples

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Effect test

Embodiment 1

[0016] This embodiment is a method for preventing water leakage of the electric furnace cluster oxygen lance holder and the water cooling plate under the lance, including the following steps:

[0017] Divide the water-cooled plate of the cluster oxygen lance into upper and lower parts for separate fabrication.

[0018] The upper water-cooled plate is made of steel, and the original radian of the middle part of the water-cooled plate is straightened, so that the cluster oxygen lance seat protrudes 30mm into the electric furnace, and the horizontal distance between the cluster oxygen lance, the lower water-cooled plate and the lower furnace lining is enlarged , the original distance is 0, as the cluster oxygen lance seat protrudes 30mm into the electric furnace, the horizontal distance between the cluster oxygen lance and the lower water cooling plate and the lower furnace lining also increases by 30mm accordingly.

[0019] The lower water cooling plate is made of copper, which ...

Embodiment 2

[0024] This embodiment is a method for preventing water leakage of the electric furnace cluster oxygen lance holder and the water cooling plate under the lance, including the following steps:

[0025] Divide the water-cooled plate of the cluster oxygen lance into upper and lower parts for separate fabrication.

[0026] The upper water-cooled plate is made of steel, and the original radian of the middle part of the water-cooled plate is straightened, so that the cluster oxygen lance seat protrudes 35mm into the electric furnace, and the horizontal distance between the cluster oxygen lance and the lower water-cooled plate and the lower furnace lining is enlarged , the original distance is 0, as the cluster oxygen lance seat protrudes 35mm into the electric furnace, the horizontal distance between the cluster oxygen lance and the lower water cooling plate and the lower furnace lining also increases by 35mm accordingly.

[0027] The lower water cooling plate is made of copper, whi...

Embodiment 3

[0032] This embodiment is a method for preventing water leakage of the electric furnace cluster oxygen lance holder and the water cooling plate under the lance, including the following steps:

[0033] Divide the water-cooled plate of the cluster oxygen lance into upper and lower parts for separate fabrication.

[0034] The upper water-cooled plate is made of steel, and the original radian of the middle part of the water-cooled plate is straightened, so that the cluster oxygen lance seat protrudes 40mm into the electric furnace, and the horizontal distance between the cluster oxygen lance and the lower water-cooled plate and the lower furnace lining is enlarged , the original distance is 0, as the cluster oxygen lance seat protrudes 40mm into the electric furnace, the horizontal distance between the cluster oxygen lance and the lower water cooling plate and the lower furnace lining also increases by 40mm accordingly.

[0035] The lower water cooling plate is made of copper, whi...

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Abstract

The invention relates to a water leakage preventing method in the metallurgical field, in particular to a method for preventing water leakage of the base of a coherent oxygen lance of an electric furnace and a water cooling plate under the base. The mounted water cooling plate of the coherent oxygen lance is divided into an upper water cooling plate and a lower water cooling plate; the upper water cooling plate is made of steel, the original radian at the middle part of the upper water cooling plate is straightened to ensure that the base of the coherent oxygen lance bulges about 30 mm to the inner part of the electric furnace, so as to enlarge the distance between the coherent oxygen lance and a lower furnace liner and the distance between the lower water cooling plate and the lower furnace liner; the lower water cooling plate is made of copper; the mounting position of the base of the coherent oxygen lance is raised by 200 mm upwards on the original basis, and both the upper water cooling plate and the lower water cooling plate are changed. The method can basically solve the problem of water leakage of the base of the coherent oxygen lance and the water cooling plate under the base, greatly reduce erosion and depletion to the lower liner of the furnace by the coherent oxygen lance, obviously prolong the electric furnace life, reduce the labor intensity of workers, improve the production rhythm and reduce the production cost.

Description

technical field [0001] The invention relates to a water leakage prevention method in the field of metallurgy, in particular to a water leakage prevention method for an electric furnace cluster oxygen lance holder and a water cooling plate under the lance. Background technique [0002] Compared with converter steelmaking, electric furnace steelmaking has a higher production cost. One is because domestic scrap steel, the main raw material for electric furnace steelmaking, is more expensive than molten iron, and the other is because electric furnace steelmaking consumes more electricity. Based on these two main reasons, in order to reduce the production cost of electric furnace steelmaking, domestic electric furnace factories generally promote the hot charging hot metal process of electric furnace, and the hot charging ratio of electric furnace hot metal is increasing day by day. However, the hot charging ratio of electric furnaces has been greatly increased, and the oxygen sup...

Claims

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Application Information

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IPC IPC(8): C21C5/52
CPCY02P10/20
Inventor 刘亚洲李德波
Owner NANJING IRON & STEEL CO LTD
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