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A white matt glaze with wide firing range, small glaze thickness and good glaze effect

A technology of matt glaze and small thickness, which is applied in the field of ceramic products, which can solve the problems of large glaze thickness, narrow firing temperature range, and insufficient texture, and achieve the effects of improving ceramic performance, balancing expansion coefficient, and increasing fluidity

Active Publication Date: 2022-06-03
福建省德化尚本道陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The firing temperature of matte glaze is generally controlled at 1200°C to 1250°C. Although it has a matte effect, the texture is not enough
Moreover, the thickness of the glaze is large, and it is difficult to reflect the angular design for the angular shape, which in turn affects the appearance of the product.
In addition, the firing temperature range of the existing matt glazes on the market is narrow, and a slight change in the kiln temperature will affect the quality of the fired glaze surface, resulting in a reduction in the appearance and sense of the entire ceramic product

Method used

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  • A white matt glaze with wide firing range, small glaze thickness and good glaze effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation process steps of white matt glaze ceramic products:

[0029] S1. Grind 10Kg of frit for 1-2h to a particle size of 8-15μm, for later use; then according to the ratio of raw materials, 20Kg of nepheline, 15Kg of talc, 15Kg of kaolin, 5Kg of shuangfei powder, 1Kg of zirconium silicate, 0.1 kg of sodium tripolyphosphate Kg is mixed and then ground, and ground for 30-35h until the particle size is 20-30μm, and frit is added to obtain mixed raw materials for later use.

[0030] S2. Add water to the obtained mixed raw materials, mix evenly to obtain glaze slurry, control the solid content of the glaze slurry to be 60-65%, and then vacuum defoaming for 20-25 minutes to obtain glaze slurry.

[0031] S3. Finely rub the fired ceramic green body, then wash the powder of the green body with clean water, then immerse the obtained glaze slurry for glazing, take out and dry naturally to obtain the first ceramic product; the thickness of the glaze layer is 0.05 ~0.1mm. ...

Embodiment 2

[0036] The preparation process steps of white matt glaze ceramic products:

[0037] S1. Grind 15Kg of frit for 1-2h to a particle size of 15-20μm, for later use; then according to the ratio of raw materials, mix 30Kg of nepheline, 25Kg of talc, 30Kg of kaolin, 12Kg of double fly powder, 5Kg of zirconium silicate, 10Kg of quartz, and 10Kg of dolomite 5Kg, 6Kg of animal bone meal, and 0.5Kg of sodium tripolyphosphate are mixed and then ground, and ground for 30-35 hours until the particle size is 30-50 μm, and frit is added to obtain mixed raw materials for later use.

[0038] S2. Add water to the obtained mixed raw materials, mix evenly to obtain a glaze slurry, the solid content of the glaze slurry is 60-65%, and then vacuum defoaming for 20-25 minutes to obtain a glaze slurry.

[0039] S3. Finely rub the fired ceramic green body, then wash the powder of the green body with clean water, then immerse the obtained glaze slurry for glazing, take out and dry naturally to obtain th...

Embodiment 3

[0044] The preparation process steps of white matt glaze ceramic products:

[0045] S1. Grind 10Kg of frit for 1-2h to a particle size of 13-17μm, for later use; then according to the ratio of raw materials, mix 20Kg of nepheline, 15Kg of talc, 15Kg of kaolin, 5Kg of double fly powder, 1Kg of zirconium silicate, 1Kg of quartz, and 1Kg of dolomite 1Kg of animal bone meal, 1Kg of animal bone meal, and 0.1Kg of sodium tripolyphosphate are mixed and then ground, and ground for 30-35 hours until the particle size is 40-50 μm, and frit is added to obtain mixed raw materials for later use.

[0046] S2. Add water to the obtained mixed raw materials, mix evenly to obtain a glaze slurry, the solid content of the glaze slurry is 60-65%, and then vacuum defoaming for 20-25 minutes to obtain a glaze slurry.

[0047] S3. Finely rub the fired ceramic green body, then wash the powder of the green body with clean water, then immerse the obtained glaze slurry for glazing, take out and dry natur...

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Abstract

The invention discloses a white matte glaze with wide firing range, small glaze thickness and good glaze effect, which comprises: 20-30 parts of nepheline, 15-25 parts of talc, 15-30 parts of kaolin, and 10 parts of frit ‑15 parts, 5‑12 parts of double fly powder, 1‑5 parts of zirconium silicate, 0‑10 parts of quartz, 0‑5 parts of dolomite, 0‑6 parts of animal bone meal, 0.1‑0.5 parts of sodium tripolyphosphate. The frit is a matt frit, which can balance the expansion coefficient of the glaze during sintering and avoid defects such as pinholes. Sodium tripolyphosphate mainly plays the role of ceramic debonding agent in ceramic production, increasing the fluidity of glaze slurry and improving ceramic performance. The matt glaze of the present invention has a wide firing range and a small glaze thickness through raw material selection and content setting, and cooperates with the high-temperature firing process to have some high-temperature porcelain characteristics, which are perfectly combined with the matt glaze surface, fully It takes advantage of the crystal clear porcelain under high temperature and the moist, smooth and silky texture brought by the matte glaze. It is not limited by the shape of the vessel and has the advantages of a wide range of applications.

Description

technical field [0001] The invention belongs to the technical field of ceramic products, in particular to a white matte glaze with wide firing range, small glazing thickness and good glaze effect and a preparation method thereof. Background technique [0002] Matt glaze is a special glaze between glossy glaze and matt glaze. Its glaze surface has weak reflective ability and no vitreous luster on the surface, but presents a soft silky or velvety luster. After the glaze of the matte glaze is melted at high temperature, a part of the glaze component analyzes the crystal during the cooling process. Many ceramic matt glazes on the market have a smoother and brighter matte effect, and most of them are thick glazes and fired at medium temperature. The firing temperature of matte glaze is generally controlled at 1200 ℃ ~ 1250 ℃, although it has a matte effect, the texture is insufficient. Moreover, the thickness of the glazing is large, and it is difficult to reflect the angular d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/20C03C8/16C03C8/02C03C1/04C04B41/86
CPCC03C8/20C03C8/16C03C8/02C03C1/04C04B41/86C04B41/5022C04B41/0072C04B41/4539Y02P40/60
Inventor 李德龙
Owner 福建省德化尚本道陶瓷有限公司
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