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Method of preparing low-expansion heat-resistant ceramic plate

A ceramic plate, low-expansion technology, applied in the field of ceramics, can solve the problems of inability to meet basic needs, low market acceptance, large expansion coefficient, etc., and achieve the effects of low expansion coefficient, easy cleaning, and good heat resistance.

Inactive Publication Date: 2019-05-03
FOSHAN SHI WAN YING BRAND CERAMICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing heat-resistant ceramic plates are generally produced by a simple one-time pressing-one-time glazing method, and their expansion coefficient is relatively large and water-absorbing, which cannot meet people's basic needs when used, and because the ceramic plates are relatively rough, resulting in Market acceptance is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 15 parts of kaolin, 10 parts of talcum powder, 0.8 parts of polyvinyl alcohol, 0.3 parts of citric acid, 30 parts of cordierite, 2 parts of barium sulfate, 2 parts of titanium dioxide, 1 part of polyurethane, 3 parts of di-tert-butyl p-cresol and chlorine Mix 0.1 parts of lithium chloride, add an appropriate amount of water, and use a ball mill to perform a ball mill for 18 hours to obtain a fineness of 0.8% with a 250-mesh sieve. After removing iron, adjust the moisture content of the slurry to 40%, and then perform a spray granulation to obtain particles with a particle size of 2-2.5mm, with a moisture content of 1%, and stale for 24 hours through the silo; Bricks are machined into blanks to obtain plate blanks.

[0033] Send the board green body to the roller kiln for firing at 200°C, and the pre-firing cycle is 10 to 15 minutes. Pulverize then, use ball mill to carry out secondary ball milling, obtain fineness and be 250 mesh sieve surplus 0.5%, after removing...

Embodiment 2

[0036] Take 12 parts of kaolin, 11 parts of talcum powder, 0.6 parts of polyvinyl alcohol, 0.3 parts of citric acid, 28 parts of cordierite, 2 parts of barium sulfate, 2 parts of titanium dioxide, 3 parts of polyurethane, 1 part of di-tert-butyl p-cresol and chlorine Mix 1 part of lithium chloride, add an appropriate amount of water, and use a ball mill to perform ball milling for 16 hours to obtain a fineness of 0.6% on a 250-mesh sieve. After removing iron, adjust the moisture content of the slurry to 38%, and then perform a spray granulation to obtain particles with a particle size of 2-2.5mm, with a moisture content of 1%, and stale for 24 hours through the silo; Bricks are machined into blanks to obtain plate blanks.

[0037] Send the board body to the roller kiln for firing at 250°C, and the pre-firing cycle is 10 to 15 minutes. Pulverize then, use ball mill to carry out secondary ball milling, obtain fineness and be 250 mesh sieve surplus 0.6%, after removing iron, adj...

Embodiment 3

[0040] Take 18 parts of kaolin, 9 parts of talcum powder, 0.7 parts of polyvinyl alcohol, 0.2 parts of citric acid, 32 parts of cordierite, 1 part of barium sulfate, 3 parts of titanium dioxide, 2 parts of polyurethane, 2 parts of di-tert-butyl p-cresol and chlorine Mix 0.5 parts of lithium chloride, add an appropriate amount of water, and use a ball mill to perform a ball mill for 16 hours to obtain a fineness of 250 mesh sieve remaining 1.0%. After removing iron, adjust the moisture content of the slurry to 42%, and then perform a spray granulation to obtain particles with a particle size of 2-2.5mm, with a moisture content of 1%, and stale for 24 hours through the silo; Bricks are machined into blanks to obtain plate blanks.

[0041] Send the board body to the roller kiln for firing at 300°C, and the pre-firing cycle is 10 to 15 minutes. Pulverize then, use ball mill to carry out secondary ball milling, obtain fineness and be 250 mesh sieve surplus 0.9%, after removing iro...

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Abstract

The invention provides a method of preparing a low-expansion heat-resistant ceramic plate. The method comprises the following steps: mixing raw materials of the plate according to a formula, performing ball milling by using a ball mill, after iron is removed, adjusting a water content of slurry, performing spray granulation, performing aging in a material bin, and preparing a blank by using an automatic brick machine to obtain a plate blank body; sending the plate blank body to a roller kiln, performing pre-sintering, performing pulverization, performing ball milling by using a ball mill, after iron is removed, adjusting a water content of slurry, performing spray granulation, performing aging in a material bin, and preparing a blank by using an automatic brick machine to obtain a plate; mixing glaze materials according to a formula, performing ball milling by using a ball mill, after iron is removed, adjusting a water content of glaze slurry, and coating the plate for 2-4 times; and sending the glaze-coated plate into a roller kiln, performing temperature programming for firing, and performing polishing to obtain the finished product. According to the method for preparing the low-expansion heat-resistant ceramic plate provided by the invention, the product prepared by the method has the advantages of good heat resistance, high strength, a low expansion coefficient, and no water penetration.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a method for preparing a low-expansion heat-resistant ceramic plate. Background technique [0002] Glass-ceramic plates and heat-resistant ceramic plates are the mainstream choices for induction cooker panels in the market, of which glass-ceramic plates are the main ones. The advantages of glass-ceramic plates are good heat resistance, small expansion coefficient, and impervious to water; the main advantage of ceramic plates is their low price. [0003] However, the glass-ceramic plate has a high melting point and low strength. It cannot be polished by mechanized and automatic methods in the production process. It can only be processed by semi-mechanized or pure manual processing. Therefore, its price is generally relatively high, resulting in a higher price for induction cookers. [0004] People have been hoping to obtain ceramic plates with similar properties to glass-ceramic plates to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195C04B35/622C04B41/86
Inventor 范新晖邱军林金宏袁红邓荣
Owner FOSHAN SHI WAN YING BRAND CERAMICS CO LTD
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