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Preparation method of micro-pore permeation resistance high-alumina brick

A high-alumina brick, anti-penetration technology, used in ceramic products, applications, household appliances, etc., can solve the problems of poor wear resistance, reduced service life, large porosity, etc., and achieve good wear resistance and low room temperature wear. , the effect of small porosity

Inactive Publication Date: 2017-09-08
吴迪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problems of traditional high-alumina bricks with large porosity, poor wear resistance and reduced service life, a preparation method of microporous anti-permeation high-alumina bricks is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Weigh 120g of zircon, 12g of bauxite, and 35g of anthracite, put them into a ball mill, mill them at 400r / min for 2 hours, and pass through a 200-mesh sieve to obtain a sieved composite powder. Put the sifted composite powder into a muffle furnace. In a nitrogen atmosphere, heat to 1600°C and heat-preserve for calcination for 4 hours, cool to room temperature, put it into a grinder and grind it, and pass through a 320-mesh sieve to obtain zirconium nitride-based ceramic powder; weigh 12kg of super-grade high-alumina bauxite and add it to the grinder Pulverize, cross 200 mesh sieves, get super-grade high-alumina bauxite powder after sieving, then take by weighing 8kg of super-grade high-alumina bauxite powders after sieving, 0.6kg of alumina micropowder 100g that crosses 200 mesh sieves Magnesia and 5L of sucrose solution with a mass fraction of 25% were mixed evenly and put into a grinder to grind for 30 minutes to obtain a mixture; then the obtained mixture was placed i...

example 2

[0022] Weigh 100g of zircon, 10g of bauxite, and 32g of anthracite, put them into a ball mill, mill them at 300r / min for 1 hour, pass through a 200-mesh sieve to obtain a sieved composite powder, and put the sifted composite powder into a muffle furnace. In a nitrogen atmosphere, heat to 1500°C and heat-preserve for calcination for 3 hours, cool to room temperature, put it into a grinder and grind it, and pass through a 320-mesh sieve to obtain zirconium nitride-based ceramic powder; weigh 10kg of super-grade high-alumina bauxite and add it to the grinder Pulverize, cross 200 mesh sieves, get super-grade high-alumina bauxite powder after sieving, then take by weighing 7kg super-grade high-alumina bauxite powders after sieving, 0.5kg crosses the alumina micropowder of 200 mesh sieves, 80g crosses the electric powder of 200 mesh sieves Fused magnesia and 4L mass fraction of 20% sucrose solution were evenly mixed and put into a grinder to grind for 20 minutes to obtain a mixture; ...

example 3

[0025]Weigh 110g of zircon, 11g of bauxite, and 33g of anthracite, put them into a ball mill, mill them at 350r / min for 2 hours, pass through a 200-mesh sieve to obtain a sieved composite powder, and put the sifted composite powder into a muffle furnace. In a nitrogen atmosphere, heat to 1550°C and heat-preserve for calcination for 3 hours, cool to room temperature, put it into a grinder and grind it, and pass through a 320-mesh sieve to obtain zirconium nitride-based ceramic powder; weigh 11kg of super-grade high-alumina bauxite and add it to the grinder Pulverize, cross 200 mesh sieves, get super-grade high-alumina bauxite powder after sieving, then take by weighing 7kg super-grade high-alumina bauxite powders after sieving, 0.6kg crosses the alumina micropowder of 200 mesh sieves, 90g crosses the electric powder of 200 mesh sieves Fused magnesia and 4L of sucrose solution with a mass fraction of 23% were evenly mixed and put into a grinder to grind for 25 minutes to obtain a...

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PUM

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Abstract

The invention belongs to the technical field of preparation of refractory materials and particularly relates to a preparation method of a micro-pore permeation resistance high-alumina brick. The preparation method comprises the following steps: firstly, ball-milling, preparation method and calcining raw materials: zirconite, bauxite and the like, so as to obtain zirconium nitride-based ceramic powder; smashing and sieving special grade high-alumina bauxite, mixing the special grade high-alumina bauxite, saccharose, alumina micro powder and the like and grinding the mixture; after grinding, screening out micro-pore high-alumina bauxite clinkers with all grades of granularity; mixing the micro-pore high-alumina bauxite clinkers with all grades of granularity, which is screened out, the zirconium nitride-based ceramic powder and the like, pressing the mixture into a green brick and calcining the green brick. The micro-pore permeation resistance high-alumina brick prepared by the invention is small in porosity and low in apparent porosity; the apparent porosity reaches 12-14%, so that the wear-resisting property is improved, and the abrasion loss at normal temperature is 5cm<3> or lower; the breaking strength at normal temperature reaches 29MPa or higher, and the pressure-resistant strength at normal temperature reaches 151MPa or higher.

Description

technical field [0001] The invention belongs to the technical field of refractory preparation, and in particular relates to a preparation method of a microporous anti-permeation high alumina brick. Background technique [0002] High alumina brick is a kind of refractory material. Its main component is alumina. It has high thermal stability and a refractoriness above 1790°C. The alumina content of high alumina brick must be more than 48%. Raw materials with high aluminum content are formed and calcined. The refractoriness and load softening temperature of high alumina bricks are stronger than those of clay products, and the slag resistance is also better. With the increase of alumina content, the slag resistance of high alumina bricks and other The performance in all aspects has also been improved accordingly. High-alumina bricks are mainly used on the top of steelmaking electric furnaces to shield arc light and high-temperature radiation generated by electric plates and mai...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/66C04B35/10C04B35/622
CPCC04B35/10C04B35/622C04B35/66C04B38/0645C04B2235/349C04B2235/3886C04B2235/96C04B38/0074
Inventor 吴迪薛洋杨阳
Owner 吴迪
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