A kind of porous ceramics, light-weight high-strength ceramic plates fired rapidly and preparation method thereof

A technology of porous ceramics and ceramic plates, applied in the field of architectural ceramics, can solve the problems of difficulty in controlling high-temperature foaming, fuel consumption, etc., and achieve the effects of ensuring product flatness, reducing emissions, and shortening the firing cycle.

Active Publication Date: 2022-01-07
GUANGDONG NEWPEARL CERAMIC GRP CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the external foaming agent is difficult to control during the high-temperature foaming stage of the kiln firing process, the existing technology can only control the uniformity of the internal structure of the porous ceramic material by prolonging the holding time and cooling time
At present, the production and preparation of lightweight high-strength ceramic plates for construction is usually carried out at a sintering temperature of 1150-1200 ° C, and the production sintering cycle is usually as high as 180-240 minutes, compared with conventional building ceramic tiles (sintering cycle is usually 60-100 minutes) minutes), more fuel is consumed and more CO is emitted 2 exhaust gas

Method used

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  • A kind of porous ceramics, light-weight high-strength ceramic plates fired rapidly and preparation method thereof
  • A kind of porous ceramics, light-weight high-strength ceramic plates fired rapidly and preparation method thereof
  • A kind of porous ceramics, light-weight high-strength ceramic plates fired rapidly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is a light-weight and high-strength ceramic plate of rapid firing according to the present invention, and the preparation method of the light-weight and high-strength ceramic plate of rapid firing comprises the following steps:

[0038] (1) According to the formula of porous ceramics, weigh each raw material;

[0039] (2) In the raw material of porous ceramics described in step (1), add silicon carbide foaming agent (addition accounts for 0.1% of the total weight of porous ceramic raw materials) and water glass (addition accounts for 0.7% of the total weight of porous ceramic raw materials) %); after mixing evenly, wet ball milling was carried out with water for 4 hours to obtain ceramic slurry, which was spray-dried at a flow rate of 46 s to obtain a sieve residue of 0.8% on a 250-mesh sieve and a moisture content of 6.4 %ceramic powder;

[0040] (3) Press the ceramic powder obtained in step (2) into a ceramic body, and then sequentially dry, glaze, an...

Embodiment 2

[0044] This embodiment is a light-weight and high-strength ceramic plate of rapid firing according to the present invention, and the preparation method of the light-weight and high-strength ceramic plate of rapid firing comprises the following steps:

[0045] (1) According to the formula of porous ceramics, weigh each raw material;

[0046] (2) In the raw material of porous ceramics described in step (1), add high-temperature blowing agent carbon black (addition accounts for 1% of porous ceramic raw material gross weight) and dispersant sodium tripolyphosphate (addition accounts for porous ceramic 1.8% of the total weight of raw materials), after mixing evenly, wet ball milling was carried out with water for 4 hours to obtain ceramic slurry, and the ceramic slurry was spray-dried at a flow rate of 40 seconds to obtain a sieve residue of 250 mesh sieves less than 1.0 %, ceramic powder with a moisture content of 5%;

[0047] (3) Pressing the ceramic powder obtained in step (2) ...

Embodiment 3

[0051] This embodiment is a light-weight and high-strength ceramic plate of rapid firing according to the present invention, and the preparation method of the light-weight and high-strength ceramic plate of rapid firing comprises the following steps:

[0052] (1) According to the formula of porous ceramics, weigh each raw material;

[0053] (2) In the porous ceramic raw material described in step (1), add polishing slag containing silicon carbide (the addition accounts for 10% of the total weight of the porous ceramic raw material) and dispersant sodium tripolyphosphate (the addition accounts for 10% of the porous ceramic raw material). 1% of the total weight of ceramic raw materials), after mixing evenly, wet ball milling was carried out with water for 6 hours to obtain ceramic slurry, and the ceramic slurry was spray-dried at a flow rate of 60 seconds to obtain a sieve residue of 250 mesh sieve less than 1.0%, moisture content 8% ceramic powder;

[0054] (3) Press the ceram...

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Abstract

The invention relates to a porous ceramic, a fast-fired light-weight and high-strength ceramic plate and a preparation method thereof, and belongs to the technical field of architectural ceramics. The porous ceramic of the present invention, in terms of weight percentage, comprises the following preparation raw materials: clay 10-20%, wollastonite 6-20%, bauxite 10-20%, talc 1-5%, potassium sodium Feldspar water abrasive 28-50%, alumina 2-7%; the preparation method of the fast-fired light-weight high-strength ceramic plate according to the present invention is to add a certain proportion of high-temperature foaming agent to the base porous ceramic formula , the sintering time, holding temperature and time are controlled, and the preparation method realizes the light-weight and high-strength ceramic plate with internal pore structures with two different formation mechanisms and different size effects; the light-weight and high-strength ceramic plate according to the present invention has It is characterized by short firing time, flexible and controllable internal porous structure designed with two different formation mechanisms, high whiteness, and strong high temperature deformation resistance.

Description

technical field [0001] The invention relates to a porous ceramic, a fast-fired light-weight high-strength ceramic plate and a preparation method thereof, belonging to the technical field of building ceramics. Background technique [0002] Lightweight and high-strength ceramic materials have been applied to building curtain walls or exterior walls in recent years because of their combination of thermal insulation, low water absorption, weather resistance, and rich surface decoration effects. According to the industry standard requirements of "Lightweight and High-Strength Ceramic Plates for Construction" issued by JG / T 567-2019, the definition of lightweight and high-strength ceramic plates is "a bulk density of 1.75g / cm 3 ~1.95g / cm 3 , the average bending strength ≥ 28MPa, the minimum value ≥ 23MPa micro-foamed ceramic plate". At present, the preparation process of this kind of light and high-strength ceramic plate to achieve low bulk density and high strength is usually to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B35/19C04B35/63
CPCC04B38/02C04B35/19C04B35/6303C04B2235/349C04B2235/3454C04B2235/3217C04B2235/96C04B2235/77C04B38/0067C04B38/0054
Inventor 陈然王亚婕黄佳奇马杰陈章武彭君简润桐叶德林
Owner GUANGDONG NEWPEARL CERAMIC GRP CO LTD
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