Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Maintaining method for blast furnace

A technology for protecting the furnace and furnace shell of a blast furnace, which is applied to blast furnaces, blast furnace details, blast furnace parts and other directions, can solve problems such as poor furnace conditions, falling off of spray paint on blast furnace linings, damage to cooling walls, etc., to achieve changes in production indicators and improve cooling Effects, effects for ease of operation and control

Inactive Publication Date: 2008-08-27
CHONGQING IRON & STEEL (GRP) CO LTD
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if this method is adopted to protect the furnace, the spray coating on the blast furnace lining will still be seriously peeled off, the furnace condition will be poor, and the stave will be damaged at the end of the blast furnace age. Effective furnace protection measures for blast furnaces are required by those in the field. unresolved issues

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Example: In 2007, the lining of a certain blast furnace was seriously eroded, which greatly increased the heat flow intensity of the stave, and many stave water pipes were washed through by gas, and the 6th string was No. 36, the 7th string was No. 35, the 8th string was No. 5, and the 8th string was No. 36 The grim situation of four cooling staves burning out one after another severely affected the production of the blast furnace, and the technical and economic indicators dropped sharply. Using the method of the present invention to implement repair and other furnace protection technologies on the damaged parts of the blast furnace, the phenomenon of stave burnout was effectively suppressed. In 2007, only one stave was burned out, and the technical and economic indicators of the blast furnace were greatly improved. The related furnace protection technology of the present invention is as follows:

[0023] 1. Blast furnace operation: properly control the smelting intensi...

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 provides a protection process of a blast furnace, which is a process which combines the furnace body grouting for the positions where furnace shell has high temperature, the installation of copper cooling sticks on cooling wall damaging positions, and the spraying lining for furnace body lining, wherein grouting adopts the way of indentation grouting, high aluminum fire-proof material is pressed into the furnace shell through a grouter, and furnace body damaging positions are sprayed after spraying lining and descending stock-line through damping down. Through the process of the invention, the copper cooling sticks are installed on burned-out cooling walls through damping out after the cooling wall is burned out, and thereby reaching the same cooling effect with the cooling walls, simultaneously cooling wall acid cleaning technology is adopted to conduct treatment, thereby increasing cooling effect. The process can significantly increase the cooling effect of the blast furnace cooling walls, thereby making the blast furnace working type basically stable, significantly delaying the damage of cooling walls and reducing blowing-out medium repair time, and obtaining excellent economical benefits.

Description

technical field [0001] The invention relates to a process for protecting a blast furnace in an ironworks, in particular to a method for protecting a blast furnace at a later stage of service life. Background technique [0002] The modern ironmaking process is mainly carried out in the blast furnace. The blast furnace is a vertical cylindrical furnace body made of refractory materials. The furnace shell made of steel plates is reinforced and sealed outside, and the inner cooler is protected. The furnace is from top to bottom. It is divided into furnace throat, furnace body, furnace waist, furnace bosh and hearth in turn. Ironmaking is the process of smelting ore into metallic iron at high temperature in a blast furnace. The whole process is completed in the mutual contact process of furnace materials from top to bottom and gas from bottom to top. Due to the influence of factors such as design capabilities, materials, and construction, the blast furnace in an iron factory usu...

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): C21B7/00
Inventor 魏功亮蒲军罗小兵黎均红尹卫国
Owner CHONGQING IRON & STEEL (GRP) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com