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

Preparation method and proportion of components of low-carbon magnesium-calcium carbon brick for manufacturing inner lining of steel-making refining furnace

A technology of carbon-magnesium-calcium-carbon bricks and refining furnaces, which is applied in the field of component distribution and preparation of low-carbon magnesium-calcium-carbon bricks, and can solve problems that are not suitable for smelting low-carbon steel and ultra-low carbon steel

Inactive Publication Date: 2011-05-04
ZHENGZHOU ANNEC IND
View PDF1 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The magnesia-carbon bricks that emerged in the 1970s have been the first choice for the lining of steelmaking furnaces for many years, but due to the high carbon content (C≥10%), it is easy to cause carburization of molten steel and is not suitable for smelting low-carbon steel and ultra-low carbon steel. technical requirements

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

example 1

[0034] Sintered magnesia calcium sand (MgO~70%, CaO~30%) 5-3mm 20%

[0035] Sintered magnesia calcium sand (MgO~70%, CaO~30%) 3-1mm 25%

[0036] Sintered magnesia calcium sand (MgO~70%, CaO~30%) 1-0mm 25%

[0037] Fused magnesia fine powder (MgO≥97%) <0.088mm 23%

[0038] Micropowder graphite <44um 2%

[0039] Nano carbon black 0.5%

[0040] High temperature asphalt powder <0.088mm 1.5%

[0041] Metal Al powder <0.088mm 1.5%

[0042] Metal Si powder <0.044mm 1.0%

[0043] B 4 C 0.5%

[0044] LW901 anhydrous resin +4% (additional)

example 2

[0046] Sintered magnesia-calcium sand particles (MgO~80%, CaO~20%) 5-3mm 20%

[0047] Sintered magnesia-calcium sand particles (MgO~80%, CaO~20%) 3-1mm 25%

[0048] Sintered magnesia-calcium sand particles (MgO~80%, CaO~20%) 1-0mm 25%

[0049] Sintered magnesia-calcium sand fine powder (MgO~80%, CaO~20%) <0.088mm 25%

[0050] Micropowder graphite ≤10um 1%

[0051] Nano carbon black 0.5%

[0052] High temperature asphalt powder <0.088mm 1%

[0053] Metal Al powder 2%

[0054] B 4 C 0.5%

[0055] SD911 anhydrous resin +4% (additional)

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 relates to a preparation method and proportion of components of a low-carbon magnesium-calcium carbon brick for manufacturing an inner lining of a steel-making refining furnace. In the invention, electro-fused or sintered magnesium-calcium powder, magnesia micro-powder, nano-carbon block, graphite, an antioxidant and a binding agent are mainly adopted as main components for proportioning, the carbon content in the components is lower than 5%, and a finished product can be prepared by controlling the components of raw materials and the grain size, and carrying out mixing, molding and heat treatment. The product is conductive to smelting of low-carbon steel and can smelt high-quality pure steel and clean steel and overcome the problems of environmental pollution and shortage of resources caused by using magnesium-chromium bricks for the inner lining of the refining furnace.

Description

technical field [0001] The invention relates to a component distribution ratio of a high-temperature-resistant brick for manufacturing the lining of a steelmaking refining furnace and a preparation method thereof, more specifically, to a component distribution ratio of a low-carbon magnesia-calcium-carbon brick and a preparation method thereof. Background technique [0002] With the improvement of people's living standard and industrial technology level, the demand for some pure steel and clean steel is increasing, which promotes the development of iron and steel smelting technology. The carbon content requirements of some steels are getting lower and lower, and the carbon content requirements of the refractory lining of the refining ladle for smelting low carbon steel and ultra-low carbon steel are also getting lower and lower. For example, the lining of VOD furnaces for smelting stainless steel, mainly use carbon-free fired magnesia-chrome bricks at home and abroad, but be...

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): C04B35/66
Inventor 李建涛孙庚辰周国录陈泉锋
Owner ZHENGZHOU ANNEC IND
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