Blast furnace main runner repairing process

A blast furnace and process technology, applied in the field of blast furnace main ditch repair technology, can solve the problems of blast furnace slow wind operation and restriction of blast furnace economic and technical indicators, and achieve the effects of saving time, improving repair efficiency, and improving economic and technical indicators

Pending Publication Date: 2022-02-18
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal circumstances, it takes 120 minutes to 180 minutes or even longer to discharge the residual molten iron in the main ditch, which will undoubtedly cause the blast furnace to be forced to operate with slow wind, which seriously restricts the economic and technical indicators of the blast furnace

Method used

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Embodiment Construction

[0017] The present invention will be further described below in combination with specific embodiments.

[0018] It should be noted that if there are directional indicating terms in the present invention, such as up, down, left, right, front, back direction and orientation terms, they are for the convenience of describing the relative positional relationship between components, not for related components and positions between components The absolute position of the relationship is specified, and it is only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "many", "multiple", "several", etc., it specifically refers to two or more.

[0019] The blast furnace main ditch repair process of the present invention comprises the following steps:

[00...

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PUM

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Abstract

The invention discloses a blast furnace main runner repairing process, belongs to the technical field of blast furnace smelting, and provides a blast furnace main runner repairing process capable of remarkably shortening the main runner repairing time. The process comprises the following steps: a an iron notch is blocked and supply is cut off; b hoisting equipment is used for hoisting a special brake block, and the special brake block is put into the main runner, so that residual molten iron in the main runner is extruded, replaced and discharged, wherein the size of the special brake block matches that of the accommodating cavity of the main channel; c after the residual molten iron in the main runner is discharged, the special brake block is hoisted out by hoisting equipment, and then the residual molten iron residues in the main runner are cleaned; and d the part to be repaired in the main trench is repaired. According to the method, the special brake block is directly hung in the main runner, so that the residual molten iron in the main runner can be quickly replaced and discharged, and the residual molten iron can be discharged only in 10 to 15 minutes, so that the time can be greatly saved, the repairing efficiency of the main runner is improved, the economic and technical indexes of the blast furnace are improved, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting, in particular to a blast furnace main ditch repair process. Background technique [0002] In recent years, blast furnaces use iron-storage main channels, which greatly reduces the labor intensity of workers and improves work efficiency. After a period of high-temperature slag iron erosion and chemical erosion, it needs to be repaired. However, the service life of the iron-storage main ditch cannot be synchronized with the regular maintenance of the blast furnace. In order to ensure the normal production of the blast furnace, it is necessary to repair the iron-storage main ditch during normal production. [0003] Before repairing the main ditch, there is a large amount of liquid slag and iron in the main ditch. The traditional operation method releases the residual iron through the sand hole at the bottom of the skimmer, cleans the slag and iron in the main ditch, and then repairs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/14
CPCC21B7/14Y02P10/20
Inventor 赵晓占张德荣岳增先温怀礼曾华锋岳彩东张良刘明黄守恒黄昌荣郭刚何远辉王小军张紫刚
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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