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Aluminium oxide fibre overlaying modular and preparation method thereof (dry method)

A technology of alumina fiber and manufacturing method, which is applied in the direction of fireproof coatings, etc., to achieve good application performance and expand application performance

Active Publication Date: 2007-12-05
山东鲁阳浩特高技术纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the domestic application of such products in industrial kilns is only loose fiber cotton, fiber bundles, wet-process products, and other deep-processed products are still blank.

Method used

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  • Aluminium oxide fibre overlaying modular and preparation method thereof (dry method)

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Commercially available Al 2 o 3 The content is 71%, SiO 2 Alumina fiber blanket with a content of 29%, the geometric size is 3600*310*25, and then a layer of commercially available white latex is applied on the surface, and then the layers are bonded. The amount of white latex is per cubic meter 8kg, it must be applied evenly, and a certain pressure should be applied to make the paste firm. After pasting 12 layers of alumina fiber blankets in total, send the pasted composite blanket layer to the drying room for 4.5 hours at 110°C. After it is completely dry, use a round The disk knife is cut into 300*300*35 in the direction perpendicular to the surface of the fiber blanket, and the product is made.

[0024] This product has been tested, and the thermal conductivity of the fiber blanket at a temperature of 1000°C is 0.15W / m.k, and the change of the heating line (1500°C×24h) is -1.2%.

Embodiment 2

[0026] Commercially available Al 2 o 3 Content Aluminum oxide content 73%, SiO 2 Alumina fibers with a content of 27% and geometric dimensions of 3600*310*25, first spray a commercially available adhesive of polyvinyl alcohol and silicone sealant on the surface of the fiber blanket with a mechanical sprayer. The dosage is 10kg per cubic meter of fiber blanket. It must be sprayed evenly, and a certain pressure should be applied to make the paste firm. Then repeat the above iron pinching operation until a total of 12 layers have been pasted. Then send the pasted composite blanket layer into the drying room at 60 Dry at ℃ for 5 hours, and after complete drying, use a band saw to cut into 300*300*35 in the direction perpendicular to the surface of the fiber blanket, and the product is made.

[0027] The product has been tested, and the thermal conductivity of the fiber blanket at a temperature of 1000°C is 0.13W / m.k, and the change in heating line (1500°C×24h) is -1.0%.

Embodiment 3

[0029] Commercially available Al 2 o 3 The content is 72%, SiO 2 Alumina fiber blanket with a content of 28%, the geometric size is 3600*310*25, and then a layer of commercially available white latex is applied on its surface, and then the layers are bonded, and the amount of water glass used is per cubic meter 5kg, it must be applied evenly, and a certain pressure should be applied to make the paste firm. After pasting 12 layers of alumina fiber blankets, send the pasted composite blanket layer to the drying room for 2 hours at 140°C. After it is completely dry, use a round The disk knife is cut into 300*300*35 in the direction perpendicular to the surface of the fiber blanket, and the product is made. All the other are with embodiment 1.

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Abstract

The molded alumina fiber block as one kind of fireproof and heat insulating material is gluing marketable needle-entangled alumina fiber blanket to form adhesive layer in the surface, repeated laminating and pressing to reach required thickness, drying, and precisely cutting to obtain molded alumina fiber block. The molded alumina fiber block is applied directly to the fire countering surface of high temperature thermal apparatus, and can resist high temperature of 1500 deg.c for long term and wind erosion up to 25 m / s.

Description

technical field [0001] The invention belongs to the technical field of fire-resistant and heat-insulating materials, and in particular relates to an alumina fiber veneer module and a preparation method thereof. Background technique [0002] Alumina fiber has outstanding high-temperature resistance, and is mainly used as heat-insulating refractory material, and it is used as heat-insulation material for lining in metallurgical furnaces, ceramic kilns or other high-temperature thermal equipment. due to its low density. With good heat insulation and small heat capacity, it can not only reduce the mass of the furnace body, but also improve the temperature control accuracy, and the energy saving effect is remarkable. The energy-saving effect of alumina fiber used in high-temperature furnaces is much more significant than that of general refractory bricks or high-temperature coatings, and the energy-saving energy is far greater than the heat loss. The convective heat transfer en...

Claims

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Application Information

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IPC IPC(8): C04B35/66C09K21/02
Inventor 鹿成洪任大贵李京友李军良
Owner 山东鲁阳浩特高技术纤维有限公司
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