Melt-out recombined composite aluminum oxide refractory materials

A technology of composite alumina and refractory materials, which is applied in the field of melting and recombining composite αβ or β oxygen, which can solve the problems of high temperature resistance and corrosion resistance damage

Active Publication Date: 2011-08-31
RUITAI MATERIALS TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the impurities brought by these substances will react with β-alumina to form low-melting products, which will seriously damage the high temperature resistance and corrosion resistance of the product.

Method used

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  • Melt-out recombined composite aluminum oxide refractory materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Use 5-1mm fused αβ alumina 53%, 1-0.088mm fused αβ alumina 17%, d 90 95 95 0.6 >1700°C.

[0045] The manufactured product has good manufacturing performance and extremely excellent high temperature resistance, and the experiment has been successful.

Embodiment 2

[0047] Use 5-1mm fused β-alumina 50%, 1-0.088mm fused β-alumina 20%, d 90 95 12MPa was obtained, which was nearly 200% higher than that of the sample doped with magnesia ; Then heat treatment at 1500°C for 3 hours to obtain a flexural strength of 16MPa, a compressive strength of 80MPa, a firing line change of 0.5%, and a load softening temperature of T 0.6 >1700°C.

[0048] The product produced by the invention has good manufacturing performance and extremely excellent high temperature resistance, and is suitable for use as refractory materials such as large-scale and special-shaped refractory products for the upper structure of a glass furnace and refractory lattice bodies.

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Abstract

The invention relates to a melting recombined composite alumina fire proof material, which is characterized in that the formula of the fire proof material comprises: 48 to 56 percent of 5-1mm alpha beta alumina or beta alumina, 12 to 22 percent of 1-0.088mm alpha beta alumina or beta alumina, 16 to 25 percent of d90<0.088mm alpha beta alumina or beta alumina, 0 to 12 percent of d95<0.020mm beta alumina micro powder, 0 to 5 percent of alpha alumina micro powder, 2 to 7 percent of alumina hydrate, 0.5 to 5 percent of magnesium additive, 0.05 to 0.4 percent of plus super-plasticizer, 1 to 6 percent of plus polypropylene acid series latex and 1 to 6 percent of plus water. Goods made by the invention have good manufacturing performance and good high temperature proof performance, and are suitable to be used as fire proof materials of large-sized and special-shaped fire proof products, a regenerator lattice body, and the like of the upper structure of a glass kiln.

Description

technical field [0001] The present invention is a melting and recombination compound αβ or β alumina refractory material. Alumina hydrate, magnesium additives, polyacrylic acid emulsion, chemical admixtures, and water mixing, stirring, forming, demoulding, curing, and drying processes are used to make prefabricated parts, and then fired at high temperature to obtain Na, Mg—β" ss (Na 1.51 Mg 0.69 Al 10.3 70 17 ) as the binding phase, with α-β alumina or β alumina (Na 2 O11Al 2 o 3 or NaAl 11 o 17 ) is a refractory material with the main crystal phase. The material has good forming, demolding and sintering properties, and has particularly excellent high temperature resistance, and is suitable for use as refractory materials such as large-scale and special-shaped refractory products for the upper structure of the glass furnace and refractory lattices for regenerators. Background technique [0002] Modern glass furnaces use large quantities of fused cast alumina refrac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 王杰曾刘锡俊叶亚红王俊涛赵洪亮
Owner RUITAI MATERIALS TECHNOLOGY CO LTD
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