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Aluminium oxide ceramic composite lining board and preparing method

A technology of alumina ceramics and alumina ceramic powder, which is applied in the field of alumina ceramic lining materials, can solve the problems of reducing work efficiency, blocking materials, and increasing maintenance costs.

Inactive Publication Date: 2006-08-23
武东生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing oily nylon boards and polymer lining boards used in metallurgy, mining, electric power, chemical industry and other fields have poor wear resistance, so when used in the funnel at the head of the belt conveyor, inside the dumper and in the sintering batching tank, material blocking often occurs , increasing maintenance costs and reducing work efficiency
The above-mentioned oil-containing nylon board and polymer lining board are only suitable for use in places with light material specific gravity and small drop, such as granaries and skating places.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] 7500 grams of alumina ceramic powder, 300 grams of acetone, 350 grams of glass beads, 250 grams of triethylenedimethylsilane, 600 grams of titanate and 1000 grams of quartz sand, the sum of each raw material is 10000 grams; a high-speed mixer of 4500 rpm is used After mixing for 8-12 minutes, put the material in the metal mold by automatic feeding, press on the press at 16-20Mpa for 20 minutes to make it densely formed, and then heat it at a high temperature of 380°C-420°C for 8-12 hours ( According to the thickness of the plate to be produced) hot pressing (18-22Mpa), cooling to room temperature after 1 hour, demoulding, trimming and storage.

Embodiment 2

[0010] 8000 grams of alumina ceramic powder, 300 grams of acetone, 250 grams of glass beads, 150 grams of triethylenedimethylsilane, 500 grams of titanate and 800 grams of quartz sand, the sum of each raw material is 10000 grams; a high-speed mixer of 4500 rpm is used After mixing for 8-12 minutes, put the material in the metal mold by automatic feeding, press on the press at 16-20Mpa for 20 minutes to make it densely formed, and then heat it at a high temperature of 380°C-420°C for 8-12 hours ( According to the thickness of the plate to be produced) hot pressing (18-22Mpa), cooling to room temperature after 1 hour, demoulding, trimming and storage.

Embodiment 3

[0012] 8500 grams of alumina ceramic powder, 400 grams of acetone, 150 grams of glass beads, 50 grams of triethylenedimethylsilane, 400 grams of titanate and 500 grams of quartz sand, the sum of each raw material is 10000 grams; a high-speed mixer of 4500 rpm is used After mixing for 8-12 minutes, put the material in the metal mold by automatic feeding, press on the press at 16-20Mpa for 20 minutes to make it densely formed, and then heat it at a high temperature of 380°C-420°C for 8-12 hours ( According to the thickness of the plate to be produced) hot pressing (18-22Mpa), cooling to room temperature after 1 hour, demoulding, trimming and storage.

[0013] The alumina ceramic composite liner made above is inspected: the density is 1.14g / cm 2 ;Tension strength: 28MPa; Bending strength: 70MPa; Impact strength: 38KJ / m 2 ; Heat distortion temperature: 101 ℃.

[0014] The above products are used for the inner lining of the belt machine head funnel, the inner lining of the dump t...

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Abstract

The present invention is composite alumina ceramic lining board and its preparation process. The composite aluminum oxide ceramic lining board is prepared with alumina ceramic powder 75-85 wt%, acetone 2-4 wt%, glass bead 1.5-3.5 wt%, triethyl dimethyl silane 0.5-2.5 wt%, titanate 4-6 wt% and quartzite 5-10 wt%, and through mixing, cold molding, heating at 380-420deg.c for 8-12 hr, hot pressing at 18 -22 MPa for 0.5-2 hr and cooling to normal temperature. The composite alumina ceramic lining board has the features of high temperature resistance, antioxidizing, high wear resistance, fire retarding, very low friction coefficient, relatively high strength and toughnes, etc. and is suitable for use in mechanical, chemical, and other industrial fields.

Description

technical field [0001] The invention belongs to a liner material, in particular to an alumina ceramic liner material suitable for the fields of metallurgy, mining, electric power, chemical industry and the like. Background technique [0002] The existing oily nylon boards and polymer lining boards used in metallurgy, mining, electric power, chemical industry and other fields have poor wear resistance, so they are often used in the funnel at the head of the belt conveyor, inside the dumper and in the sintering batching tank, and the phenomenon of material blocking often occurs , Increased maintenance costs and reduced work efficiency. The above-mentioned oily nylon boards and polymer lining boards are only suitable for use in places with light specific gravity and small drop, such as granaries and skating places. Contents of the invention [0003] The object of the present invention is to provide a high wear-resistant, corrosion-resistant, self-lubricating alumina ceramic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/632
Inventor 武东生
Owner 武东生
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