Electrofusion-recombined corundum bricks

A recombination, corundum brick technology, applied in the field of corundum brick, can solve the problem of high temperature mechanical properties to be improved and so on

Inactive Publication Date: 2019-03-29
淄博八陡耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the technical defects of the prior art, and provide an electro-fused rebonded corundum brick to solve the technical problem that the high-temperature mechanical properties of related products in the prior art need to be improved

Method used

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Effect test

Embodiment 1

[0019] Electrofusion rebonded corundum bricks, the raw materials for the preparation of the electrofusion rebonded corundum bricks are: 75% w / w of fused AZS waste bricks, 18% w / w of alumina, and kaolin as the balance. The fused rebonded corundum brick is prepared by the following method: take 75% w / w of fused AZS waste bricks, 18% w / w of alumina, and kaolin as the balance, mix them, and burn them at a temperature of 1600-1700°C become. The glass phase content in the fused AZS waste brick is 15% w / w. The composition of the fused rebonded corundum brick includes: Al 2 o 3 50~60% w / w, ZrO 2 20~30%w / w, SiO 2 14-20% w / w.

Embodiment 2

[0021] Electrofusion rebonded corundum bricks, the raw materials for the preparation of the electrofusion rebonded corundum bricks are: AZS frit 75% w / w, alumina 18% w / w, and kaolin as the balance. The fused rebonded corundum brick is prepared by the following method: take 75% w / w of AZS frit, 18% w / w of alumina, and kaolin as the rest, mix and fire at a temperature not lower than 2000°C . The composition of the fused rebonded corundum brick includes: Al 2 o 3 50~60% w / w, ZrO 2 20~30%w / w, SiO 2 14-20% w / w.

Embodiment 3

[0023] Electrofusion rebonded corundum bricks, the raw materials for the preparation of the electrofusion rebonded corundum bricks are: 75% w / w of fused AZS waste bricks, 18% w / w of alumina, and kaolin as the balance.

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Abstract

The invention provides electrofusion-recombined corundum bricks. According to the electrofusion-recombined corundum bricks, AZS fused blocks or electro-fused AZS crushed bricks serve as a raw material, and a small amount of kaolin or alumina is added as a binder. When the temperature of the raw material is heated to a certain temperature, electro-fused AZS aggregates seep a glass phase, the glassphase forms mullite with the binder, brick bodies can be burnt, and the burnt temperature is 1,600 DEG C to 1,700 DEG C. Chemical composition fluctuation ranges of the recombined product provided by the invention are as follows: 50%w / w to 60%w / w of Al2O3, 20%w / w to 30%w / w of ZrO2 and 14%w / w to 20%w / w of SiO2. Compared with electrofusion products, the electrofusion-recombined corundum bricks have the advantages that the seepage of the glass phase is alleviated greatly, the seepage temperature is increased, high-temperature mechanical properties are relatively high, and particularly, the creep resistance and glass erosiveness resistance are good. According to the electrofusion-recombined corundum bricks, a good technical effect is achieved by innovative technological improvement, the cost isrelatively low, the realization is easy, and thus, the electrofusion-recombined corundum bricks have a broad application prospect.

Description

technical field [0001] The invention relates to the technical field of corundum bricks, in particular to an electrofused and rebonded corundum brick. Background technique [0002] Fused corundum bricks are melted alumina in an electric arc furnace and then cast into a specified model of a specific shape. After annealing and heat preservation, and then processing with a diamond abrasive tool, the desired product is obtained. Fused rebonded corundum brick is a white solid formed by pouring pure alumina powder and zircon sand containing 65% zirconia and 34% silicon dioxide into the model after melting in an electric furnace and cooling. The phase structure is composed of eutectoid and glass phase of corundum and zirconite, which is the eutectoid of corundum phase and zirconite phase in terms of phaseology, and the glass phase is filled between their crystals. The manufacturing process of electric fused cast bricks mixes selected zircon sand and industrial alumina powder at a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
CPCC04B35/10C04B35/62204C04B2235/3244C04B2235/3418C04B2235/349
Inventor 陈艳鸣修敬惠马泽亮
Owner 淄博八陡耐火材料有限公司
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