Low temperature baking process of heat conductive corundum-mullite ceramic tile

A technology of mullite and ceramic bricks, which is applied in the field of production and firing of corundum-mullite ceramic bricks with good heat conduction at low temperature, can solve the problems of large energy consumption, achieve the promotion of sintering process, improve the compactness, The effect of superior mechanical properties and thermal conductivity

Inactive Publication Date: 2007-06-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a corundum-mullite ceramic brick with good thermal conductivity for the construction field that consumes a lot of energy at present, that is, use alumina and spodumene, etc. Raw materials, improving the main crystal phase of existing ceramic tiles, increasing the content of corundum-mullite phase, reducing its defects, thereby improving its thermal conductivity, effectively utilizing natural geothermal resources, not only can obtain higher economic and social benefits , and is conducive to energy saving

Method used

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  • Low temperature baking process of heat conductive corundum-mullite ceramic tile

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Using kaolin, ball clay, alumina, feldspar, corundum and spodumene as the main raw materials, the chemical composition of corundum-mullite ceramic bricks is shown in Table 2, and the calorific value of the fuel used is shown in Table 3.

[0047] As shown in Figure 1, it is a process flow diagram of the present invention; Figure 2 is a firing temperature curve of the present invention.

[0048] (1) Raw material processing: including raw material crushing and wet ball milling process, crushing the raw materials, weighing 55.8Kg of raw ball clay, 45.3Kg of kaolin, 33Kg of alumina, 4.3Kg of corundum, 97.8Kg of feldspar, and 13.2kg of spodumene , 27.9Kg of quartz and 34.8Kg of wollastonite are mixed, adding 0.5% sodium tripolyphosphate by weight percentage, then the material is wet ball milled, the ball milling medium is alumina, the ball milling time is 20h, and the moisture content is 31%. The sieve residue is less than 1%, and the fluidity is about 36s in Tu-4 cups.

[0...

Embodiment 2

[0054] Using kaolin, ball clay, alumina, feldspar, corundum and spodumene as the main raw materials, the chemical composition of corundum-mullite ceramic bricks is shown in Table 2, and the calorific value of the fuel used is shown in Table 3. Under the same process conditions and additives, spodumene is used to replace part of feldspar as flux raw material.

[0055] (1) Raw material processing: including raw material crushing and wet ball milling process, crushing the raw material, weighing 50.4Kg of raw material ball clay, 34.8Kg of alumina, 41.1Kg of kaolin, 8.5Kg of corundum, 88.5Kg of feldspar, and 28.2 kg of spodumene , quartz 25.2Kg, wollastonite 31.5Kg, add 0.5% sodium tripolyphosphate by weight percentage, and then carry out wet ball milling to the material, the ball milling medium is alumina, the ball milling time is 22h, and the sieve residue is less than 1%. A mud with a water content of 32% is obtained, and its fluidity is 40 seconds after Tu-4 cups of outflow.

...

Embodiment 3

[0061] With kaolin, ball clay, alumina, corundum, feldspar and spodumene as the main raw materials, the chemical composition of corundum-mullite ceramic bricks is shown in Table 2, and the calorific value of the fuel used is shown in Table 3. Under the same process conditions and additives, spodumene is used to replace part of feldspar as flux raw material, and corundum is added as the main raw material to increase the content of corundum main crystal phase.

[0062] (1) Raw material processing: including raw material crushing and wet ball milling process, crushing raw materials, weighing 46.5Kg of raw materials ball clay, 32.1Kg of alumina, 37.8Kg of kaolin, 24Kg of corundum, 81.9Kg of feldspar, and 26.1Kg of spodumene , 22.8Kg of quartz and 28.5Kg of wollastonite are mixed, adding 0.5% sodium tripolyphosphate by weight percentage, and then the material is wet ball milled, the ball milling medium is alumina, the ball milling time is 24h, and the moisture content is 33%. The s...

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Abstract

The present invention discloses low temperature baking process of heat conductive corundum-mullite ceramic tile. The process includes the steps of material treatment, powder preparation, pressing to form and sintering. The heat conductive corundum-mullite ceramic tile has certain energy saving effect, high mechanical performance and high heat conductivity. Using the heat conductive corundum-mullite ceramic tile can utilize geothermal resource effectively, lower energy consumption of building and protect ecological environment.

Description

technical field [0001] The invention belongs to the technical field of production and firing of corundum-mullite ceramic bricks with good thermal conductivity fired at low temperature, and specifically refers to a method for firing corundum-mullite ceramic bricks with good thermal conductivity at low temperature. Background technique [0002] Low-temperature fired good thermal conductivity corundum-mullite ceramic brick refers to clay-based raw materials, mixed with alumina spodumene, feldspar and quartz and other raw materials, after ball milling, molding and heating in the temperature range of 1180 ~ 1200 ℃ A ceramic brick with high density and good thermal conductivity obtained by sintering. [0003] In the traditional method of making ceramic tiles, the main raw materials are plastic raw materials (such as ball clay, kaolin), flux raw materials (such as feldspar) and barren raw materials (such as quartz). Due to the short firing cycle and holding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/10C04B35/622
Inventor 吴清仁李清陶吴建青余其俊郑树龙唐奇王首杨孙创奇
Owner SOUTH CHINA UNIV OF TECH
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