Method for replacing converter bottom blowing seat brick

A converter bottom blowing and converter technology, which is applied in the field of metallurgy, can solve the problems that the bottom blowing point cannot be replaced multiple times, and the converter bottom blowing seat brick cannot be replaced.

Active Publication Date: 2019-08-30
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current bottom blowing rapid thermal replacement technology can only replace the embedded bottom blowing gun, and cannot replace the bottom blowing seat brick of the converter. As a result, the bottom blowing rapid thermal replacement can only be replaced once at the same position, and the same bottom blowing point cannot be realized. replacement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for replacing converter bottom blowing seat brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for replacing the bottom blowing seat brick of a converter, comprising the steps of:

[0033] Step A, the converter is shut down and the furnace is cooled

[0034] The converter is shut down and cooled for 7 days. After the converter is shut down, the converter is parked vertically. The primary dedusting fan of the converter runs at high speed for 8 hours. Afterwards, the furnace mouth of the converter is moved forward to a horizontal position, and an axial flow fan is installed in front of the converter to blow air into the furnace. Speed ​​up the cooling of the furnace, use an infrared thermometer to measure the temperature in the furnace, and lower it to 37°C to replace the furnace base brick;

[0035] Step B. Determining the filling position of the converter bottom

[0036] Park the converter after the cooling furnace in step A vertically, release the oxygen lance high-pressure water and oxygen chain, lower the lance to zero, and pass the oxygen lance head...

Embodiment 2

[0046] A method for replacing the bottom blowing seat brick of a converter, comprising the steps of:

[0047] Step A, the converter is shut down and the furnace is cooled

[0048] The converter was shut down and cooled for 8 days. After the converter was shut down, the converter was parked vertically. The primary dedusting fan of the converter was operated at high speed for 9 hours. Then, the furnace mouth of the converter was moved forward to a horizontal position, and an axial flow fan was installed in front of the converter to blow air into the furnace. Speed ​​up the cooling of the furnace, use an infrared thermometer to measure the temperature in the furnace, and lower it to 40°C to replace the furnace base brick;

[0049] Step B. Determining the filling position of the converter bottom

[0050] Park the converter after the cooling furnace in step A vertically, release the oxygen lance high-pressure water and oxygen chain, lower the lance to zero, and pass the oxygen lan...

Embodiment 3

[0060] A method for replacing the bottom blowing seat brick of a converter, comprising the steps of:

[0061] Step A, the converter is shut down and the furnace is cooled

[0062] The converter is shut down and cooled for 10 days. After the converter is shut down, the converter is parked vertically. The primary dedusting fan of the converter runs at high speed for 10 hours. Then, the furnace mouth of the converter is moved forward to a horizontal position, and an axial flow fan is installed in front of the converter to blow air into the furnace. Speed ​​up the cooling of the furnace, use an infrared thermometer to measure the temperature in the furnace, and lower it to 42°C to replace the furnace base brick;

[0063] Step B. Determining the filling position of the converter bottom

[0064] Park the converter after the cooling furnace in step A vertically, release the oxygen lance high-pressure water and oxygen chain, lower the lance to zero, and pass the oxygen lance head cen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for replacing a converter bottom blowing seat brick. The method specifically comprises the following steps of stopping and cooling a converter, determining a patchingposition at the bottom of the converter, patching, installing a new converter bottom blowing seat brick, maintaining the new converter bottom blowing seat brick, and thermally replacing a bottom blowing element. According to the method, the old converter bottom blowing seat brick is replaced with the converter bottom blowing seat brick, and therefore the problems that the bottom blowing element isblocked and cannot be used after serious erosion in the later service period of the converter are solved; multiple replacement of bottom blowing at the same bottom blowing point of the converter is achieved, and the service life of the bottom blowing element is synchronous with that of the single-service converter, thus, the full-service bottom blowing of the converter is ensured, and the methodhas important significance for achieving the full-service bottom blowing and the repeated quick replacement of the bottom blowing at the same bottom blowing point; and the converter bottom and jointsafter the bottom blowing replacement have no redness and steel infiltration.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and relates to furnace type control of a converter and maintenance of a converter bottom blowing, in particular to a method for replacing a converter bottom blowing block. Background technique [0002] my country's converter bottom blowing technology has made great progress in recent decades, and the converter bottom blowing gas source has been N 2 、Ar 2 , O 2 , CO, CO 2 and other gas sources, and the bottom blowing gas supply components are also diversified. Through the improvement of the material, molding process, structure, and gas supply component protection bricks of the gas supply components, the converter bottom masonry process, re-blowing process and Maintenance system, thus greatly improving the life of the converter blowing system. [0003] The development process of converter bottom blowing technology is essentially the process of improvement and perfection of bottom blowing gas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C21C5/44
CPCC21C5/44Y02P10/20
Inventor 朱青德魏国立阮强王德勇胡绍岩张英嘉周正德茹作栋
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap