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Large-size porcelain thin plate and production method thereof

A production method and large-scale technology, applied in the field of ceramic processing, can solve the problems of high cost, environmental pollution, easy chipping, and reduced green body strength, etc., to improve thermal stability and mechanical strength, reduce production costs, and sintering performance. stable effect

Inactive Publication Date: 2019-04-02
佛山市高明贝斯特陶瓷有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of displaying the decorative performance of large-scale porcelain thin plates, the decorative glaze in the industry mostly adopts the method of digital spray glaze. This digital glaze is oily, which is different from the water-based glaze applied on the surface of ordinary ceramic tiles. It is not only costly but also There are negative effects such as environmental pollution, which in the final analysis is that the green body strength cannot meet the requirements of using water-based glaze
Because the moisture content of the green body is high, the strength of the green body will be relatively reduced, resulting in an increase in the breakage rate of the green body
On the other hand, large-scale porcelain thin plates have a relatively high firing dimensional shrinkage. If the conventional ceramic tile body formula design is used, during the cooling process after firing, it is very easy to make the interior of the product due to the phase transition of quartz and temperature differences. Crack due to large thermal stress, or easy to chip when cutting in the later stage, resulting in a low rate of excellent products and limiting the later application space of large-scale porcelain thin plate products
At present, there is no technical solution for large-scale porcelain thin plate products with high quality and high-quality products and its stable production.

Method used

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  • Large-size porcelain thin plate and production method thereof
  • Large-size porcelain thin plate and production method thereof
  • Large-size porcelain thin plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the actual chemical composition of a certain batch of raw materials (see Table 1 for the characteristic chemical composition of raw materials), the ingredients are weighed (wt%) according to the ratio in Table 2 below, and the total amount of ingredients is 48t.

[0040] Table 2

[0041] raw material

Proportion

SiO 2

Al 2 o 3

Fe 2 o 3

TiO 2

CaO

MgO

K 2 o

Na 2 o

Potassium sand

10％

71.1

18.6

0.83

0.1

0.32

0.11

2.92

0.19

wollastonite

11％

47.5

3.31

0.64

0.05

37.8

1.21

0.1

0.07

Xinbeini

17.5％

54.1

30.6

1.05

0.17

0.05

0.16

3.06

0.27

Bentonite

4.5％

71.4

15.6

0.8

0.01

0.77

1.13

4.64

1.61

Sodium Potassium Powder

12％

68.6

17.1

0.17

0.02

1.58

0.5

7.07

4.38

High alumina vanadium

9％

31.4

60.8

1.69

2.65

0.34

1.26

0...

Embodiment 2

[0047] According to the actual chemical composition of the same batch of raw materials in Example 1 (see Table 1 for the characteristic chemical composition of the raw materials), the ingredients were weighed (wt %) according to the ratio in Table 3 below, and the total amount of ingredients was 48t.

[0048] table 3

[0049]

[0050] Add 0.05% sodium carboxymethylcellulose of the total weight of raw materials, 0.1% composite sodium phosphate, 0.3% water glass and 33% water and send them into a ball mill together to form a slurry with a million-hole sieve residue of 0.9%. The resulting slurry was spray-dried to make green body powder with a moisture content of 7.2%, which was stale for 60 hours before use. The green body powder is pressed under 16800t pressure to form a large size thin green body with a thickness of 0.9m×2.6m and a thickness of 5.7mm. The body is dried in a hot air drying kiln at 200°C for 10 minutes; the surface is wet-sprayed with glaze, the moisture con...

Embodiment 3

[0055] According to the actual chemical composition of another batch of raw materials (see Table 1 for the characteristic chemical composition of raw materials), the ingredients were weighed (wt%) according to the ratio in Table 4 below, and the total amount of ingredients was 48t.

[0056] Add 0.06% sodium carboxymethylcellulose of the total weight of raw materials, 0.09% composite sodium phosphate, 0.25% water glass and 35% water and send them into a ball mill together to form a slurry with a million-hole sieve residue of 0.7%. Spray-dry the resulting slurry to make green body powder with a moisture content of 7.5%, and stale for 48 hours. The green body powder is pressed into a large-scale thin green body with a thickness of 1m×2m and a thickness of 4.8mm through a pressure of 15000t. The green body is dried in a hot air drying kiln at 180°C for 15 minutes; the surface is wet-sprayed with glaze, the moisture content of the glaze is 30%, and the amount of glaze sprayed is 55...

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Abstract

The invention discloses a large-size porcelain thin plate and a production method thereof, wherein the large-size porcelain thin plate has an upper surface area of 1.62-2.88 m<2> and a thickness of 3.5-5.5 mm, and comprises the following raw materials by weight: 10-12% of potassium sand, 10-11% of wollastonite, 14.5-17.5% of Xinbei mud, 4-4.5% of bentonite, 12-13% of potassium sodium stone powder,7-9% of high bauxite, 21-22% of high sodium stone particles, 3-4% of talc, and 11-13% of ball clay. According to the present invention, by reducing the SiO2 content, the residual stress caused by thevolume change due to the quartz crystal form transformation during the firing cooling stage is reduced, and the content of the SiO2 glass phase is reduced, such that the product structure stability is good, the residual stress is low, no corner-chipping is generated during the machining, and the processing performance is significantly improved.

Description

technical field [0001] The invention relates to a preparation of a porcelain thin plate, in particular to a large-size porcelain thin plate and a production method thereof. It belongs to the technical field of ceramic processing. Background technique [0002] The thinning of ceramic tiles is a major trend in my country's building ceramics industry. The national standard "Ceramic Tiles" released in May 2015 added restrictions on the thickness of ceramic tiles, and the national standard "Ceramic Plates" released as early as March 2009 defined that the thickness is not greater than 6mm, and the upper surface area Not less than 1.62m 2 The plate-shaped ceramic products are called ceramic plates. The thinning and weight reduction of architectural ceramic products has forward-looking significance for saving natural resources and energy and realizing the sustainable development of the industry. Thinning and large-scale ceramic products have released a larger decoration and appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/34C04B41/89
CPCC04B33/13C04B33/34C04B41/52C04B41/89C04B2235/3201C04B2235/3217C04B2235/3427C04B2235/3454C04B2235/3472C04B2235/61C04B2235/656C04B41/504C04B41/4578C04B41/0072C04B41/50C04B41/5022
Inventor 钟建光刘建新辛雷陈鹏程
Owner 佛山市高明贝斯特陶瓷有限公司
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