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Sintered compact aluminium oxide refractory product

A technology for refractory products and alumina, which is applied in the field of sintered dense alumina refractory products to achieve the effects of preventing air bubbles, reducing production costs, and having good corrosion resistance.

Inactive Publication Date: 2012-07-04
淄博裕民基诺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the deficiencies of the existing technology, the technical problem to be solved by the present invention is: to provide a sintered dense alumina refractory product, which can overcome defects such as air bubbles, stones, scratches, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight composition of the sintered dense alumina refractory product described in the present invention is:

[0022] Aluminum Oxide 97%

[0023] Mixed Additives 2.7%

[0024] Debonding agent (sodium polyacrylate) 0.2%

[0025] Moisture (additional) 35%

[0026] Y with particle size less than 44μm 2 o 3 0.5%

[0027] TiO with particle size less than 44μm 2 0.8%

[0028] MgO with particle size less than 44μm 0.3%

[0029] SiO with particle size less than 5 μm 2 1.0%

[0030] Gum Arabic 0.2%

[0031] Put the above-mentioned raw materials into the ball mill according to the requirements of the proportion, ball mill for 60 hours, and the fineness requirement is less than 20μm. After spray drying, the water content is controlled at 1%±0.5%, isostatic pressing, the pressure is 250Mpa, after drying at 80°C, it is fired at 1520°C become.

Embodiment 2

[0033] The weight composition of the sintered dense alumina refractory product described in the present invention is:

[0034] Aluminum Oxide 94.7%

[0035] Mixed Additives 5.0%

[0036] Debonding agent (sodium polyacrylate) 0.3%

[0037] Moisture (additional) 35%

[0038] Wherein the weight composition of mixed additive is:

[0039] Y with particle size less than 44μm 2 o 3 1.0%

[0040] TiO with particle size less than 44μm 2 1.2%

[0041] MgO with particle size less than 44μm 0.6%

[0042] SiO with particle size less than 5 μm 2 2.0%

[0043] Gum Arabic 0.2%

[0044] Put the above-mentioned raw materials into a ball mill according to the requirements of the proportion, ball mill for 60 hours, and the fineness is required to be less than 20 μm. After spray drying, the water content is controlled at 1% ± 0.5%, pouring, drying at 80°C, and firing at 1480°C.

Embodiment 3

[0046] The weight composition of the sintered dense alumina refractory product described in the present invention is:

[0047] Aluminum Oxide 95.85%

[0048] Mixed Additives 3.85%

[0049] Debonding agent (polyacrylic acid) 0.3%

[0050] Moisture (additional) 35%

[0051] Wherein the weight composition of mixed additive is:

[0052] Y with particle size less than 44μm 2 o 3 0.7%

[0053] TiO with particle size less than 44μm 2 1.0%

[0054] MgO with particle size less than 44μm 0.45%

[0055] SiO with particle size less than 5 μm 2 1.5%

[0056] Gum Arabic 0.2%

[0057] Put the above-mentioned raw materials into the ball mill according to the requirements of the proportion, ball mill for 60 hours, the fineness requirement is less than 20μm, after spray drying, the moisture content is controlled at 1%±0.5%, isostatic pressing, the pressure is 250Mpa, after drying at 80°C, it is fired at 1500°C become.

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Abstract

The invention relates to a sintered compact aluminum oxide refractory product which is characterized by comprising the following raw materials in percentage by weight: 94%-98% of aluminium oxide, 0.2%-0.8% of dispergator, 0.1%-1.5% of Y2O3 with particle size less than 44 mu m, 0.5%-1.5% of TiO2 with the particle size less than 44 mu m, 0.1%-1.0% of MgO with the particle size less than 44 mu m, 1.0%-2.5% of SIO2 with the particle size less than 5 mu m and 0.1%-0.3% of gum Arabic. The produced compact aluminum oxide refractory product disclosed by the invention is applied to material supply paths or melting baths and upper structures of ware glass kilns and can reduce the etching rate of materials, prevent the generation of bubbles, stones and scratches during the production process, reduce the production cost and meet of future production development.

Description

technical field [0001] The invention relates to a sintered dense alumina refractory product, which is mainly used for the feed channel, molten pool and upper structure of a glass kiln. Background technique [0002] At present, the commonly used feeding channel materials for vessel glass furnaces mainly include sillimanite, mullite, fused zirconia corundum and α-β corundum bricks, etc. Sintered materials of sillimanite and mullite are poor in compactness and erosion resistance. Not good, it is easy to form defects such as bubbles, stones, scratches, etc. Fused zirconia corundum products have good compactness and are resistant to erosion, but their glass phase is relatively high, and the residual carbon during production is easy to melt into the glass with exudate to cause staining. The α-β corundum bricks used in the year have solved the above shortcomings, and the use effect is better, but it is expensive for glassware and the cost increases. The invention uses high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/10
Inventor 阎继昌陈建文王立平李功文王立洲王丙志
Owner 淄博裕民基诺新材料有限公司