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Preparation method of corundum honeycomb ceramic with slag resistance

A technology of honeycomb ceramics and corundum, which is applied in the field of preparation of corundum honeycomb ceramics, which can solve the problems of short service life and poor slag resistance of corundum honeycomb ceramics, and achieve the effects of improving slag resistance, good heat storage performance, and prolonging service life

Active Publication Date: 2010-01-20
姚光纯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor slag resistance and short service life of corundum honeycomb ceramics in the above existing engineering applications, the present invention provides a corundum honeycomb ceramic with large specific surface area, high porosity, strong heat storage performance and good slag resistance preparation method

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0010] Example 1, the corundum honeycomb ceramic shape cylinder, it adopts bauxite, kaolin, talc and potassium feldspar weight ratio of 7:87:5:1 raw materials mixed into 200kg, ball milled for 2 hours, passed through 250 mesh After sieving, add it to the kneader, then add 9% water and 2.5% tung oil of the total weight of the raw materials into the kneader, knead in the kneader, stale for 24 hours after kneading, choose a triangular hole mold, and press it into a triangular hole by hydraulic method The corundum honeycomb ceramics, and then the corundum honeycomb ceramics are dried at 60-120 ° C, and then fired at a high temperature of 1380 ° C to form corundum honeycomb ceramics. The corundum honeycomb ceramic has uniformly sized triangular holes arranged in parallel. Then dilute the aluminum chromium phosphate compound and water at 1:1 to form an aluminum chromium phosphate solution, spray the aluminum chromium phosphate solution on the surface of the inner wall of the corundu...

Embodiment 2

[0011] Example 2, the shape of the corundum honeycomb ceramics is a cuboid, and it uses bauxite, kaolin, talc and potassium feldspar with a weight ratio of 10:82:6:2 to mix into 200kg, ball milled for 2 hours, and passed through 250 mesh After sieving, add it to the kneader, then add 7% water and 2% tung oil of the total weight of the raw materials into the kneader, knead in the kneader, stale for 24 hours after kneading, select a square hole mold, and press it into a square hole by hydraulic method Corundum honeycomb ceramics, then dry the corundum honeycomb ceramics at 60-120°C, and then fire them at 800-1100°C to make corundum honeycomb ceramics. The corundum honeycomb ceramic has square holes of uniform size and parallel arrangement. Then dilute the aluminum chromium phosphate compound and water by 1:1 to form an aluminum chromium phosphate solution, impregnate the corundum honeycomb ceramics in the aluminum chromium phosphate solution for 30 minutes, dry at 105°C after im...

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Abstract

The invention discloses a preparation method of corundum honeycomb ceramic with slag resistance. The method comprises the following steps: following raw materials of bauxite, kaolin, soapstone and feldspar are added in a ball mill according to proportion and are mulled into mixed material, then the mixed material is added in a kneader, then a proper amount of water and adhesive agent are added in the kneader, then the triteness, the pug milling, the drying, the cutting and the high-temperature sintering are performed after kneading to obtain a honeycomb ceramic, aluminium-chromium phosphate solution is coated on the surface of the inner wall of a corundum honeycomb ceramic hole, then the corundum honeycomb ceramic is dried and then baked at 1380 DEG C, and the aluminium-chromium phosphate is dehydrated, cured and stuck on the surface of the inner wall of the corundum honeycomb ceramic hole. The prepared honeycomb ceramic not only has high specific surface area, high porosity and good heat storage property; since an aluminium-chromium phosphate compound protective layer is coated on the surface of the inner wall of the honeycomb ceramic hole, the protective layer does not react with the ferrous oxide in the iron scale and is not stuck with the liquid-phase residue formed by the iron scale at the high temperature to ensure that the honeycomb ceramic hole is not blocked, the slag resistance of the corundum honeycomb ceramic is enhanced and the service life of the corundum honeycomb ceramic is prolonged.

Description

technical field [0001] The invention relates to a method for preparing corundum honeycomb ceramics with anti-slag performance. Background technique [0002] As we all know, in the regenerative industrial heating furnaces of various industrial furnaces such as steel and petrochemical industries, honeycomb ceramics are ideal materials for manufacturing regenerative industrial heating furnace regenerators. It is a key component in the furnace, which can not only improve the combustion effect, save energy, but also reduce harmful gas emissions and reduce environmental pollution. However, the repeated exposure of the honeycomb ceramic regenerator to flue gas and air erosion will lead to frequent changes in the temperature of the ceramic honeycomb regenerator, thus putting forward higher requirements for its material. The honeycomb ceramic materials used in engineering are often not resistant to rapid cooling and rapid heating, and are prone to damage. Corundum honeycomb ceramic...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B41/85
Inventor 姚光纯李顺
Owner 姚光纯
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