Low-carbon magnesia carbon brick with oxidation resistance and preparation method thereof

A technology of anti-oxidation performance and carbon-magnesium-carbon bricks, applied in the field of refractory materials, can solve the problems of product structure deterioration, reducing the service life of MgO-C bricks, corroding MgO particles, etc., and achieving high thermal shock stability and anti-oxidation performance. Good, improve antioxidant effect

Active Publication Date: 2021-10-01
北京利尔高温材料股份有限公司
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-carbon magnesia-carbon brick with anti-oxidation properties and its preparation method, through the structural design of low-carbon magnesia-carbon bricks with anti-oxidation properties to solve the excellent problems of magnesia-carbon bricks existing in the pr

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
  • Low-carbon magnesia carbon brick with oxidation resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The present invention also provides a method for preparing low-carbon magnesia-carbon bricks with anti-oxidation properties as described in any one of the above, comprising the following preparation steps:

[0032] After dry mixing the fused magnesia, add resin, the speed of adding resin is 15kg / min, then add -196 graphite, mix for 5-10min, add high temperature asphalt, after stirring, finally add metal aluminum powder and ZrB 2 -Cr 7 C 3 Composite materials, after stirring evenly, obtain low-carbon magnesia-carbon brick preparation materials;

[0033] The low-carbon magnesia-carbon brick preparation material is put into the mold, pressed and formed to obtain brick embryos;

[0034] The brick embryos are pushed into a heat treatment kiln for heat treatment to obtain low-carbon magnesia carbon bricks.

[0035] Preferably, during pressing, a 1000T electric screw press is used for pressing; during heat treatment, the temperature inside the heat treatment kiln is 180°C-2...

Embodiment 1

[0039] Preparation of low-carbon magnesia-carbon bricks with excellent oxidation resistance (sample 1):

[0040] In parts by weight, it includes 95 parts of fused magnesia, 1 part of metal aluminum powder, 3 parts of liquid phenolic resin, ZrB 2 -Cr 7 C 3 1 part of composite material, 1 part of high-temperature pitch and 2 parts of -196 graphite.

[0041] 101) According to the parts by weight, after dry mixing the fused magnesia, add liquid phenolic resin, the liquid phenolic resin is added at a rate of 10~15kg / min, then add -196 graphite, mix for 5-10min, add high temperature asphalt, After stirring, finally add metal aluminum powder and ZrB 2 -Cr7 C 3 Composite materials, after stirring evenly, obtain low-carbon magnesia-carbon brick preparation materials;

[0042] 102) The low-carbon magnesia-carbon brick preparation material is put into the mould, pressed and formed, and the brick embryo is obtained;

[0043] 103) Push the brick embryo into a heat treatment kiln for ...

Embodiment 2

[0048] Preparation of low-carbon magnesia-carbon bricks with excellent oxidation resistance (sample 2):

[0049] In parts by weight, it includes 94 parts of fused magnesia, 1 part of metal aluminum powder, 3 parts of liquid phenolic resin, ZrB 2 -Cr 7 C 3 2 parts of composite material, 1 part of high-temperature pitch and 2 parts of -196 graphite.

[0050] 201) According to the number of parts by weight, after dry mixing the fused magnesia, add liquid phenolic resin, the liquid phenolic resin is added at a rate of 10~15kg / min, then add -196 graphite, mix for 5-10min, add high temperature asphalt, After stirring, finally add metal aluminum powder and ZrB 2 -Cr 7 C 3 Composite materials, after stirring evenly, obtain low-carbon magnesia-carbon brick preparation materials;

[0051] 202) The low-carbon magnesia-carbon brick preparation material is put into the mould, pressed and formed to obtain the brick embryo;

[0052] 203) Push the brick embryo into a heat treatment kil...

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 the technical field of refractory materials, in particular to a low-carbon magnesia carbon brick with oxidation resistance and a preparation method thereof. The low-carbon magnesia carbon brick comprises the following components in parts by weight: 88-96 parts of fused magnesite, 1-3 parts of metal aluminum powder, 3 parts of resin, 1-3 parts of a ZrB2-Cr7C3 multi-phase material, 1-3 parts of high-temperature asphalt and 1-3 parts of -196 graphite. Through the structural design of the low-carbon magnesia carbon brick with oxidation resistance, the technical problems that in the prior art, the excellent performance of the magnesia carbon brick depends on the existence of carbon in the brick, the oxidation of the carbon easily causes the deterioration of the product structure in the use process, slag intrudes into the brick along gaps to erode MgO particles, and the service life of the MgO-C brick is shortened are solved.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a low-carbon magnesia-carbon brick with oxidation resistance and a preparation method thereof. Background technique [0002] As a composite refractory material, magnesia carbon brick has a decisive relationship with the introduction of carbon for its excellent performance. Magnesia itself has strong corrosion resistance to alkaline slag and high-iron slag, and magnesia has super high refractoriness. However, the high temperature thermal expansion coefficient of magnesia is relatively high, resulting in poor spalling resistance and thermal shock stability of magnesia. Therefore, carbonaceous elements are introduced, and the high thermal conductivity and low expansion of the carbonaceous elements themselves are used to reduce the temperature difference of the brick body and improve the thermal shock stability of the brick body. At the same time, the wetting angle of t...

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): C04B35/043C04B35/634
CPCC04B35/043C04B35/63496C04B35/634C04B2235/402C04B2235/48C04B2235/3839C04B2235/3813C04B2235/425C04B2235/96C04B2235/77C04B2235/5427
Inventor 赵伟宫磊刘靖轩佟晓松任林赵现堂孙春晖张晗王团收
Owner 北京利尔高温材料股份有限公司
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