Sialon combined fireproof material containing aluminum silicon alloy

An aluminum-silicon alloy and refractory technology, applied in the field of sialon combined refractory materials, can solve the problems of inability to meet the use and construction, and achieve the effect of improving the resistance to high temperature thermal stress damage, improving the bonding strength, and increasing the fracture toughness.

Inactive Publication Date: 2004-03-31
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The standard specification of 230×115×65mm can no longer meet the requirements of use and construction. It is recommended to adopt a specification of 415×200×154mm or more, which has become the development direction

Method used

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  • Sialon combined fireproof material containing aluminum silicon alloy
  • Sialon combined fireproof material containing aluminum silicon alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The Sialon bonded corundum brick containing aluminum-silicon alloy of the present invention is composed of brown corundum aggregate, brown corundum fine powder, clay, alumina fine powder and aluminum-silicon alloy fine powder according to the following weight percentages:

[0046] Brown fused alumina aggregate: 70%

[0047] Brown corundum fine powder: 10.5%, 180-320 mesh

[0048] Al-Si alloy fine powder: 9.5%, 180-320 mesh

[0049] Guangxi clay: 2%, 180-320 mesh

[0050] Alumina fine powder: 8%, 180-320 mesh

[0051] The preparation method of aluminum-silicon alloy fine powder: when Z=1, Si: 93.98%, Al: 6.02%. The ratio of mixing to melting or sintering.

[0052] The preparation method of Sialon bonded corundum brick: according to the conventional method, after mixing the raw materials, molding, and then sintering to obtain the product of the present invention.

Embodiment 2

[0054] The Sialon bonded corundum brick prepared by the aluminum-silicon alloy method of the present invention is composed of brown corundum aggregate, brown corundum fine powder, clay, alumina fine powder and aluminum-silicon alloy fine powder according to the following weight percentages:

[0055] Brown fused alumina aggregate: 65%

[0056] Brown corundum fine powder: 17.25%, 180-320 mesh

[0057] Al-Si alloy fine powder: 9.25%, 180-320 mesh

[0058] Guangxi clay: 2%, 180-320 mesh

[0059] Alumina fine powder: 6.5%, 180-320 mesh

[0060] The preparation method of aluminum-silicon alloy fine powder: when Z=3, Si: 75.75%, Al: 24.25%. The ratio of mixing to melting or sintering.

[0061] The preparation method of Sialon bonded corundum brick: same as embodiment 1

Embodiment 3

[0063] The Sialon bonded corundum brick prepared by the aluminum-silicon alloy method of the present invention is composed of brown corundum aggregate, brown corundum fine powder, clay, alumina fine powder and aluminum-silicon alloy fine powder according to the following weight percentages:

[0064] Brown fused alumina aggregate: 68.5%

[0065] Brown corundum fine powder: 10%, 180-320 mesh

[0066] Al-Si alloy fine powder: 10.8%, 180-320 mesh

[0067] Guangxi clay: 2%, 180-320 mesh

[0068] Alumina fine powder: 8.7%, 180-320 mesh

[0069] The preparation method of aluminum-silicon alloy fine powder: when Z=4, Si: 60.95%, Al: 39.05%. Proportions for mixing to prepare for melting or sintering.

[0070] The preparation method of Sialon bonded corundum brick: same as embodiment 1

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Abstract

A fireproof material containing aluminum-silicon alloy. the material contains 60-75úÑ corumdum aggregate, 10-20úÑ fine corumdum powder, 5-15úÑ fine powder of aluminum-silicon alloy, 1.5-5úÑ clay, 5-12úÑ aluminum oxide. The fine powder of aluminum-silicon alloy is formed by melting or sintering metallic aluminum and metallic silicon. Due to introduction of fine powder of aluminum-silicon alloy, in producing corundum brick, the coupling phase could be quickly formed, the coupling strength between the coupling phase and brown corumdum aggregate will be improved. Compared the burning temperature of 1500degree C in the conventional process, the burning temperature of the invention is reduced to about 1430degree C , which improves the capacity of resisting rupture and high temperature.

Description

technical field [0001] The invention relates to a sialon bonded refractory material, in particular to a sialon bonded refractory material containing an aluminum-silicon alloy. Background technique [0002] G. Ervin first discovered the practicability of SiC-AlN solid solution in 1970 and applied for a patent for the first time. [0003] In the early 1970s, British and Japanese researchers discovered that Al 2 o 3 Added to Si 3 N 4 Hot pressing in Si 3 N 4 Solid solution of Al in the lattice 2 o 3 up to 60-70% by weight, and found that Si in this solid solution 3 N 4 The silicon atoms and N atoms in the system are replaced by Al atoms and oxygen atoms respectively, forming a new Si-Al-O-N system, which is named Sialon in order of their first letters. [0004] Jacques.P.R. proposed a method of adding 23-90% of the metal silicon powder with a particle size of less than 150 μm and 9-62% of the particle size with a particle size of less than 20 μm in high melting point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/185C04B35/584C04B35/66
Inventor 陈仕华洪彦若甘菲芳孙加林何胜平刘雄章
Owner BAOSHAN IRON & STEEL CO LTD
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