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Large-size ceramic plate with good forming performance and high strength and preparation method thereof

A technology of ceramic plates and ceramic tiles, which is applied to clay products, other household utensils, household utensils, etc. It can solve the problems of poor oxidation performance of the green body, easy rotten bricks on the glaze line, and high clay content, etc., to achieve good molding performance, The effect of reducing the amount of clay used and increasing the strength after firing

Active Publication Date: 2019-11-22
MONALISA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the drying strength is low, the glaze line is prone to brick rot, and it is difficult to clean
However, in order to meet the higher drying strength, the existing common formula has a large clay content, and when the thickness increases, the oxidation performance of the green body is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of the ceramic green body is not particularly limited, and can be prepared by methods known in the art, for example, the raw materials of the ceramic green body can be mixed and ball milled, granulated, and pressed to form a ceramic green body. The ball milling method may be wet ball milling or the like. The granulation method can be powder spraying granulation and the like. Iron removal and aging can be carried out before granulation. The pressing pressure can be 50000-100000KN.

[0023] The ceramic body can be fired to obtain a ceramic plate, or post-processing such as pattern decoration, glazing, etc. can be performed on the ceramic body as required, and then fired to obtain a ceramic plate. The pattern decoration method is, for example, inkjet printing or the like. In some embodiments, the ceramic body is sequentially applied with surface glaze, decorated with patterns, applied with protective glaze and then fired. Before firing, the ceram...

Embodiment 1

[0028] Step 1: Ingredients according to the following ratio: sodium stone powder: 18%, medium-temperature sand: 8%, acicular kaolin (the diameter of acicular kaolin is 0.1-0.5 μm, and the aspect ratio is 10-15. Purchased from Zhaoqing City, Guangdong Province Huaiji County Jiayuan Mining Co., Ltd.): 10%, black talc 1%, super white bauxite: 13%, high white bentonite 2%, black mud: 3%, potassium aluminum sand: 15%, water milled potassium feldspar powder : 23%, ball clay: 7%, and add 0.2% green body reinforcing agent (purchased from Foshan Boer Ceramic Technology Co., Ltd.), ball mill for 15 hours and mix evenly to obtain a mixture.

[0029] Step 2: Iron removal and staleness: iron removal is carried out on the slurry, and the slurry is stale for 24 hours after iron removal.

[0030] Step 3: Spray granulation: Use a spray tower for spray granulation.

[0031] Step 4: Compression molding: press molding.

[0032] Step 5: Firing: The green body is fired in a high-temperature rolle...

Embodiment 2

[0037]The difference with the steps of Example 1 is that the acicular kaolin is 8%, and the green body formula is: sodium stone powder: 18%, medium temperature sand: 8%, acicular kaolin: 8%, black talc 1%, super white Bauxite: 13%, high white bentonite 2%, black mud: 3%, potash aluminum sand: 15%, water milled potassium feldspar powder: 23%, ball clay: 9%.

[0038] When preparing 760×2550×13.5mm ceramic slabs, the powder did not appear delamination during the pressing process of the press; after drying in a drying kiln, the maximum drying temperature was 250°C, and the drying cycle was 85 minutes, and the drying strength was 2.1MPa; in the roller kiln High-temperature firing, the highest firing temperature is 1191°C, and the firing cycle is 120 minutes. According to the national standard GB / T 3810 "Test Method for Ceramic Tiles", the water absorption rate is 0.05%, the flexural strength is 46MPa, and the shrinkage rate is 9.8%. The whiteness is 50 degrees, and the appearance i...

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Abstract

The invention relates to a large-size ceramic plate with good forming performance and high strength and a preparation method thereof. The raw material of the ceramic green body of the ceramic plate comprises 8-15wt% of needle-like kaolin. According to the invention, the raw material of the ceramic green body comprises the high-plasticity needle-like kaolin, the high-plasticity needle-like kaolin has high plasticity, so that the use amount of clay in the formula is reduced, good strength of the green body can still be maintained, and the use amount of clay is reduced, so that the oxidation performance of the body is good. Meanwhile, the needle-like kaolin crystals are arranged in a crossed manner, so that the reduction of molding layering of a press and the improvement of the strength of the green body after firing are facilitated, and the green body has relatively good molding performance, high strength and oxidation performance.

Description

technical field [0001] The invention relates to a large-size ceramic body with good formability and high strength, a ceramic plate and a preparation method thereof, and belongs to the technical field of ceramic brick production and manufacture. Background technique [0002] With the advancement of ceramic production technology and the development of ceramic equipment, and in order to broaden the application of ceramics in furniture, the specifications of ceramic tiles are getting larger and larger, and the thickness is also increasing accordingly. When the drying strength is low, the glaze line is prone to rotten bricks, and it is difficult to clean. However, in order to meet the higher dry strength, the existing common formula has a large clay content, and when the thickness increases, the oxidation performance of the green body is poor. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a ceramic body and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B41/89
CPCC04B33/131C04B41/89C04B41/52C04B41/009C04B2235/3463C04B2235/3418C04B2235/3472C04B2235/3217C04B2235/95C04B2235/9646C04B2235/61C04B2235/9615C04B41/5022
Inventor 刘一军程科木王贤超杨元东潘利敏
Owner MONALISA GRP CO LTD
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