Technology of manufacturing low expansion coefficient honeycomb ceramic kitchen range sheet

A technology with low coefficient of expansion and low coefficient of thermal expansion, used in ceramic products, household appliances, other household appliances, etc., can solve problems such as instability, and achieve the effects of stable water absorption, high softening temperature, and reduced thermal expansion coefficient.

Active Publication Date: 2008-12-24
SHANDONG AOFU ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Water absorption: unstable, not well controlled within the range of 20%-25%;

Method used

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  • Technology of manufacturing low expansion coefficient honeycomb ceramic kitchen range sheet
  • Technology of manufacturing low expansion coefficient honeycomb ceramic kitchen range sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Manufacturing process of low expansion coefficient honeycomb ceramic cooktop:

[0046] A, material selection, select raw materials kaolin, talc, aluminum oxide and silicon dioxide, wherein the purity of kaolin and talc is more than 95%, and the purity of aluminum oxide and silicon dioxide is more than 99%. In order to make the cordierite synthesized in the product oriented, the selected raw materials must have flaky particles. Therefore, the scale-shaped kaolin is selected, generally weathered, sedimentary kaolin, and processed into powder after washing; the diameter-thickness ratio is selected. Large flaky talc, or fine enough granular talc (to ensure that the processed talc is in a flaky shape), so that the synthesized cordierite crystals can be oriented.

[0047] The morphology and particle size of the above-mentioned raw materials are:

[0048] raw material

appearance

granularity

Talc

flaky

D. 50 = 10μm

Kaolin

scaly

...

Embodiment 2

[0068] Manufacturing process of low expansion coefficient honeycomb ceramic cooktop:

[0069] A, material selection, select raw materials kaolin, talc, aluminum oxide and silicon dioxide, wherein the purity of kaolin and talc is more than 95%, and the purity of aluminum oxide and silicon dioxide is more than 99%. In order to make the cordierite synthesized in the product oriented, the selected raw materials must have flaky particles. Therefore, the scale-shaped kaolin is selected, generally weathered, sedimentary kaolin, and processed into powder after washing; the diameter-thickness ratio is selected. Large flaky talc, or fine enough granular talc (to ensure that the processed talc is in a flaky shape), so that the synthesized cordierite crystals can be oriented.

[0070] The morphology and particle size of the above-mentioned raw materials are:

[0071] raw material

appearance

granularity

Talc

flaky

D. 50 =20μm

Kaolin

scaly

D...

Embodiment 3

[0092] Manufacturing process of low expansion coefficient honeycomb ceramic cooktop:

[0093] A, material selection, select raw materials kaolin, talc, aluminum oxide and silicon dioxide, wherein the purity of kaolin and talc is more than 95%, and the purity of aluminum oxide and silicon dioxide is more than 99%. In order to make the cordierite synthesized in the product oriented, the selected raw materials must have flaky particles. Therefore, the scale-shaped kaolin is selected, generally weathered, sedimentary kaolin, and processed into powder after washing; the diameter-thickness ratio is selected. Large flaky talc, or fine enough granular talc (to ensure that the processed talc is in a flaky shape), so that the synthesized cordierite crystals can be oriented.

[0094] The morphology and particle size of the above-mentioned raw materials are:

[0095] raw material

appearance

granularity

Talc

flaky

D. 50 =30μm

Kaolin

scaly

D...

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Abstract

The present invention provides a new process for making honeycombed ceramic stove piece. Said process includes 8 steps of selecting material, mixing, milling, vacuum kneading, extrusion forming, drying, processing and firing. Said honeycombed ceramic stove piece product has low expansion coefficient, high strength, stable water absorption and high softening temperature.

Description

technical field [0001] The invention relates to a process method for manufacturing a ceramic cooker sheet, in particular to a process method for manufacturing a low thermal expansion coefficient honeycomb ceramic cooker sheet. Background technique [0002] At present, the process of manufacturing honeycomb ceramic cooker sheets mainly includes the processes of material selection, raw material mixing, raw material kneading, vacuum kneading, extrusion molding, drying, processing and firing. In the material selection stage, cordierite clinker is mainly used, or flaky kaolin, talc and industrial alumina are used as the main raw materials, and an appropriate amount of cordierite clinker is added. The content of impurities is not strictly controlled, or the crystal shape and powder particle size of raw materials such as kaolin and talc powder are not properly selected; the control of the product firing curve is not set according to the synthesis law of cordierite. The above factor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/16C04B35/622
Inventor 孟萍
Owner SHANDONG AOFU ENVIRONMENTAL PROTECTION SCI & TECH
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