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Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe

A repair method and supporting technology, applied in blast furnaces, blast furnace details, blast furnace parts and other directions, can solve problems such as affecting output and affecting furnace conditions, and achieve the effect of reducing wind breaks

Inactive Publication Date: 2005-06-29
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent wind breaks not only affect the forward flow of the furnace condition, but also affect the output

Method used

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  • Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe
  • Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe
  • Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: refer to figure 1 , the air supply branch pipe 3 is the thermal equipment connecting the surrounding pipe 1 and the blast furnace 4 tuyere, and it is the only channel for the hot air required to maintain the normal production of the blast furnace to enter the blast furnace 4 furnace. The transition part between the surrounding pipe 1 and the branch pipe 3 is called the branch Metatube 2. The branch pipe 2 is integrated with the surrounding pipe 1 in the inner lining structure, and its masonry method is to build bricks from the nozzle to the center of the surrounding pipe. When the inner lining of branch tube 2 is damaged and needs to be replaced, firstly seal and insulate branch tube 2: refer to figure 2 , since the implementation of this technology is carried out in the hot state of blast furnace shutdown, effective sealing and heat insulation is the prerequisite for the implementation of this technology, and the ceramic fiber cushion layer 5 containing...

Embodiment 2

[0012] Embodiment 2: set the arch tire in the branch pipe 2, the distribution of the flat iron is 3 points, and the rest are the same as the embodiment 1.

Embodiment 3

[0013] Embodiment 3: the distribution of flat irons is 5 points, and all the other are the same as embodiment 1.

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Abstract

The invention relates to a repair technology for blast furnace lining refractory materials, in particular to a hot state repair method for blast furnace surrounding tube branch element nozzles. The defect that the inner lining of the nozzle of the existing branch element is damaged and cannot be repaired in a hot state is solved. The technical solution is: the thermal state repair method of the branch nozzle of the blast furnace surrounding pipe, including the following steps: a. The ceramic fiber cushion layer containing the metal skeleton in the branch nozzle is sealed and insulated; b. The inner ring refractory brick is selected to close the door The bricks are first disassembled; c. The ring brick is fixed by welding the flat iron on the surface of the second ring refractory brick to the support of the iron shell of the pipe body; d. The closed door of the repaired refractory brick is selected from the closed door brick. It is mainly used for thermal repair when the inner lining of the branch nozzle of the blast furnace casing is damaged and causes air leakage.

Description

1. Technical field [0001] The invention relates to a repair technology for blast furnace lining refractory materials, in particular to a hot state repair method for blast furnace surrounding tube branch element nozzles. 2. Background technology [0002] The air supply branch pipe is the thermal equipment connecting the surrounding pipe and the blast furnace tuyere. It is the only channel for the hot air required to maintain the normal production of the blast furnace to enter the blast furnace. The transition part between the surrounding pipe and the branch pipe is called the branch pipe. The branch pipe is integrated with the surrounding pipe in the inner lining structure, and its masonry method is to build bricks from the nozzle to the center of the surrounding pipe. During the construction of the blast furnace infrastructure, the service life of the branch tubes and surrounding tubes is synchronized with the first generation of the blast furnace (more than ten years). If s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/16C21B9/10
Inventor 王立辉鲍戟万强张龙来蒋基洪关丕东沈恒元宋家齐
Owner BAOSHAN IRON & STEEL CO LTD
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