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Mullite-high-silica glass complex-phase refractory material for ceramic burner and manufacturing method thereof

A technology for high-silica glass and ceramic burners is applied in the field of refractory materials for ceramic burners, and can solve the problems of low use temperature, low strength of refractory materials, and low service life.

Inactive Publication Date: 2013-03-27
REFRACTORY MATERIAL OF SINOSTEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refractory material for traditional burners is phosphate-bonded high-alumina castable or low-cement castable. Poor stability, resulting in a very low service life, generally 2-3 months, which seriously affects the normal operation of the hot blast stove

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Get mullite-high silica glass frit 40%, andalusite 15%, α-Al 2 o 3 Put 10% micropowder, 15% clay, and 15% cordierite into the sand mixer, including 10% mullite-high silica glass frit with a particle size of 5-3mm, and mullite-high silica glass frit with a particle size of 3-1mm Glass frit 15%; mullite-high silica glass frit with a particle size of 1-0mm 15%; andalusite with a particle size of 1-0mm 5%; andalusite with a particle size of 200 mesh 10%; andalusite with a particle size of 2-0mm 5% cordierite, 10% cordierite with a particle size of 200 mesh. Put the granules into the sand mixer, add 1% water and 2% binder, mix for 2-3 minutes, put in fine powder, and then mix at a high speed for 10-15 minutes, use a high-tonnage brick press to mix the mixture The refined mud is pressed into a high-density semi-finished product, and the semi-finished product is dried in a dryer at a drying temperature of 150 ° C for 30 hours. The dried biscuit is placed in an electric furna...

Embodiment 2

[0023] Get mullite-high silica glass frit 45%, andalusite 13%, α-Al described in above-mentioned technical scheme 2 o 3 Put 10% micropowder, 12% clay, and 18% cordierite into the sand mixer, including 20% ​​mullite-high silica glass frit with a particle size of 5-3mm, and mullite-high silica glass frit with a particle size of 3-1mm 10% of glass frit; 15% of mullite-high silica glass frit with a particle size of 1-0mm; 5% of andalusite with a particle size of 1-0mm; 8% of andalusite with a particle size of 200 mesh; 8% cordierite, 10% cordierite with a particle size of 200 mesh. Put the granules into the sand mixer, add 2% water and 3% binder, mix for 2-3 minutes, put in fine powder, and then mix at a high speed for 10-15 minutes, use a high-tonnage brick press to mix the mixture The refined mud is pressed into a high-density semi-finished product, and the semi-finished product is dried in a dryer at a drying temperature of 150°C for 30 hours. The dried biscuit is placed in a...

Embodiment 3

[0025] Get mullite-high silica glass frit 50%, andalusite 12%, α-Al 2 o 3 Put 8% micropowder, 8% clay, and 20% cordierite into the sand mixer, among which 20% of mullite-high silica glass frit with a particle size of 5-3mm, and mullite-high silica glass frit with a particle size of 3-1mm Glass frit 20%; mullite-high silica glass frit with a particle size of 1-0mm 10%; andalusite with a particle size of 1-0mm 5%; andalusite with a particle size of 200 mesh 7%; andalusite with a particle size of 2-0mm 10% cordierite, 10% cordierite with a particle size of 200 mesh. Put the granules into the sand mixer, add 3% water and 3% binder, mix for 2-3 minutes, put in fine powder, and then mix at high speed for 10-15 minutes, use a high-tonnage brick press to mix the mixture The refined mud is pressed into a high-density semi-finished product, and the semi-finished product is dried in a dryer at a drying temperature of 150 ° C for 30 hours. The dried biscuit is placed in an electric furn...

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Abstract

The invention discloses a mullite-high-silica glass complex-phase refractory material for a ceramic burner. The mullite-high-silica glass complex-phase refractory material for the ceramic burner comprises the following the materials in percentage by weight: 40%-50% of mullite-high-silica glass, 10%-15% of andalusite, 5%-10% of alpha-Al2O3, 10%-15% of clay and 15%-20% of cordierite. The refractory material for the ceramic burner has the characteristics of good thermal shock resistance, good high-temperature strength and good resistance to chemical attack.

Description

technical field [0001] The invention relates to a refractory material for a ceramic burner, in particular to a mullite-high silica glass composite refractory material for a hot blast furnace ceramic burner. Background technique [0002] With the development of ironmaking technology, the design of blast furnace high blast temperature hot blast stove has been generally paid attention to by people. The material selection of the ceramic burner of the hot blast stove is the key point. The working conditions of the ceramic burner of the blast furnace hot blast stove are harsh, the temperature of the upper part can reach 1500 ℃, while the lower part is only below 200 ℃, and the temperature difference can reach 1300 ℃. Therefore, its material is required to have high refractoriness, strength, excellent thermal shock stability and chemical corrosion resistance. In addition, the ceramic burner is located at the bottom of the hot blast stove combustion chamber, which is extremely dif...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 杨俊瑞王玉霞王征想张玉涛杨秀丽段桂芳杨志宾陈晓芳郭晓伟
Owner REFRACTORY MATERIAL OF SINOSTEEL CORP
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