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High-strength thermal-shock-resistant refractory brick

A technology of thermal shock resistance and refractory bricks, which is applied in the field of refractory bricks, can solve the problems of low softening temperature, poor thermal shock resistance, and short service life of loads, and achieve high mechanical strength, strong thermal shock resistance, and shock resistance. The effect of hot and cold

Inactive Publication Date: 2017-11-24
XUZHOU SUPAI HIGH TEMPERATURE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the existing temperature requirements for steel-making electric furnaces and glass melting furnaces are getting higher and higher, that is, high-alumina refractory bricks with a refractoriness of more than 1800 degrees are required for masonry. Due to the high corrosion in steel-making electric furnaces, how to increase Corrosion resistance of high-alumina refractory bricks, increasing the service life of high-alumina refractory bricks has become a design problem for high-alumina refractory bricks, and the existing refractory bricks have poor thermal shock resistance and low softening temperature when they are born, so they are used as industrial kilns Refractory bricks are prone to bursting, wear, erosion, etc., and their service life is short

Method used

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  • High-strength thermal-shock-resistant refractory brick

Examples

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Effect test

Embodiment 1

[0020] Example 1: A high-strength thermal shock-resistant refractory brick, comprising the following raw materials in weight percentages: 16 parts of fused corundum powder, 12 parts of tabular corundum, 48 parts of alumina micropowder, 2 parts of magnesia fine powder, zirconia powder 2 parts, 1 part of silicon carbide, 1 part of silica powder, 2 parts of sodium silicate, 2 parts of andalusite powder, 1 part of titanium boride additive, 5 parts of sillimanite fine powder, 5 parts of Guangxi clay, 10 parts of scrap iron ditch Parts, 10 parts of waste silicon bricks. The particle diameter of the andalusite fine powder and the sillimanite fine powder is 40 μm; the particle diameter of the silicon micropowder is ≤5 μm. Described waste silica molybdenum brick is the waste silica molybdenum brick that getting particle size is 2mm after crushing and screening. The waste iron trench material is scrap iron trench material with a particle size of 1 mm after being crushed and screened. ...

Embodiment 2

[0021] Example 2: A high-strength thermal shock-resistant refractory brick, comprising the following raw materials in weight percentages: 20 parts of fused corundum powder, 16 parts of tabular corundum, 52 parts of alumina micropowder, 6 parts of magnesia fine powder, zirconia powder 6 parts, 4 parts of silicon carbide, 4 parts of silica powder, 6 parts of sodium silicate, 6 parts of andalusite powder, 6 parts of titanium boride additive, 15 parts of sillimanite fine powder, 8 parts of Guangxi clay, 15 parts of scrap iron ditch Parts, 15 parts of waste silicon bricks. The particle diameter of the andalusite fine powder and the sillimanite fine powder is 80 μm; the particle diameter of the silicon micropowder is ≤5 μm. Described waste silica molybdenum brick is the waste silica molybdenum brick that getting particle size is 12mm after crushing and screening. The waste iron trench material is scrap iron trench material with a particle size of 10mm after being crushed and screen...

Embodiment 3

[0022] Example 3: A high-strength thermal shock-resistant refractory brick, comprising the following raw materials in weight percentages: 18 parts of fused corundum powder, 14 parts of tabular corundum, 50 parts of alumina micropowder, 4 parts of magnesia fine powder, zirconia powder 4 parts, 2 parts of silicon carbide, 2 parts of silica powder, 4 parts of sodium silicate, 4 parts of andalusite powder, 1 part of titanium boride additive, 10 parts of sillimanite fine powder, 7 parts of Guangxi clay, 12 parts of scrap iron ditch Parts, 12 parts of waste silicon bricks. The particle diameter of the andalusite fine powder and the sillimanite fine powder is 60 μm; the particle diameter of the silicon micropowder is ≤5 μm. Described waste silica molybdenum brick is the waste silica molybdenum brick that getting particle size is 6mm after crushing and screening. The scrap iron ditch material is the scrap iron ditch material with a particle size of 5 mm after being crushed and screen...

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Abstract

The invention discloses a high-strength thermal-shock-resistant refractory brick. The high-strength thermal-shock-resistant refractory brick is characterized by being prepared from the following raw materials in parts by weight: 16-20 parts of fused corundum powder, 12-16 parts of tabular corundum, 48-52 parts of aluminum oxide micro powder, 2-6 parts of magnesia fine powder, 2-6 parts of zirconium dioxide powder, 1-4 parts of silicon carbide, 1-4 parts of silica powder, 2-6 parts of sodium silicate, 2-6 parts of andalusite powder, 1-2 parts of a titanium boride additive, 5-15 parts of sillimanite fine powder, 5-8 parts of Guangxi clay, 10-15 parts of waste iron trough materials and 10-15 parts of waste silicon mullite bricks. The material proportion of the refractory brick is optimized, and the refractory brick is good in high temperature resistance, corrosion resistance and thermal shock resistance, improves refractoriness under load, is not liable to have cracks and damages in use, and prolongs the service life.

Description

technical field [0001] The invention relates to a refractory brick, in particular to a high-strength thermal shock-resistant refractory brick. Background technique [0002] High alumina refractory brick, that is, an aluminum silicate refractory material with an alumina content of more than 48%. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, strong refractoriness and good slag resistance. As the existing temperature requirements for steel-making electric furnaces and glass melting furnaces are getting higher and higher, that is, high-alumina refractory bricks with a refractoriness of more than 1800 degrees are required for masonry. Due to the high corrosion in steel-making electric furnaces, how to increase Corrosion resistance of high-alumina refractory bricks, increasing the service life of high-alumina refractory bricks has become a design problem for high-alumina refractory bricks, and the existing refrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185
CPCC04B35/185C04B35/66C04B2235/3206C04B2235/3217C04B2235/3244C04B2235/3418C04B2235/3427C04B2235/3463C04B2235/349C04B2235/3813C04B2235/3826C04B2235/77C04B2235/96C04B2235/9607
Inventor 吴树全
Owner XUZHOU SUPAI HIGH TEMPERATURE NEW MATERIAL CO LTD
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