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Preparation method of opaque glaze

An opaque glaze and product technology, applied in the field of inorganic non-metallic materials (ceramics), can solve the problems of the third method being difficult to achieve, the raw materials are not environmentally friendly, and the cost is high, achieving low cost, simple and easy-to-control processes, and broad market. Foreground effect

Inactive Publication Date: 2015-04-29
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the first and second methods are mostly used in production practice, while the third method is difficult to realize in production
As far as the first method is concerned, in production practice, a considerable amount of zirconia, zirconium silicate, titanium oxide, cerium oxide, tin oxide, etc. are added to the glaze to form a large number of tiny particles during the firing process of the glaze. Crystals devitrify the glaze layer. This method is the most widely used, but the cost is high and the raw materials are not environmentally friendly.

Method used

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  • Preparation method of opaque glaze
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  • Preparation method of opaque glaze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The composition of the formula is expressed in glaze formula, and the glaze formula is as follows:

[0014]

[0015] The raw materials used are feldspar, quartz, burnt talc, clay, burnt clay, light calcium carbonate, and the particle size is less than 100 mesh;

[0016] Preparation process:

[0017] Raw material batching→ball milling→glazing→firing→performance testing, among which firing temperature: 1220℃,

[0018] Firing time: 2 hours, holding time: 0.5 hours.

Embodiment 2

[0020] The composition of the formula is expressed in glaze formula, and the glaze formula is as follows:

[0021]

[0022] The raw materials used are feldspar, quartz, burnt talc, clay, burnt clay, light calcium carbonate, and the particle size is less than 100 mesh;

[0023] Preparation process:

[0024] Raw material batching→ball milling→glazing→firing→performance testing, among which firing temperature: 1250℃,

[0025] Firing time: 2.5 hours, holding time: 0.5 hours.

Embodiment 3

[0027] The composition of the formula is expressed in glaze formula, and the glaze formula is as follows:

[0028]

[0029] The raw materials used are feldspar, quartz, burnt talc, clay, burnt clay, light calcium carbonate, and the particle size is less than 100 mesh;

[0030] Preparation process:

[0031] Raw material batching→ball milling→glazing→firing→performance testing, among which firing temperature: 1250℃,

[0032] Firing time: 3 hours, holding time: 0.5 hours.

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Abstract

The invention relates to a preparation method of an opaque glaze. Firstly, the molar number of all alkaline oxides in the formula of the opaque glaze is determined, and then the molar ratio of silicon oxide in the formula is controlled to be 3.00-4.50 and the molar ratio of aluminium oxide in the formula is controlled to be 0.30-0.40, thus the glaze is opacified in an opacifying area to form the opaque glaze. The raw materials adopted by the preparation method are low in cost, the preparation process is simple and is easy to control, and the opaque glaze is high in brightness, thus the preparation method has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), in particular to a preparation method of opacified glaze. Background technique [0002] Opacity glaze is also called devitrification glaze. When the visible light passes through the glaze layer of the ceramic, it is scattered by the dispersed phase in the glaze to cause opacity, which is devitrification. The formation mechanism of opacity glaze can be divided into three types: one is the formation of a large number of uniformly distributed tiny crystals in the visible light wavelength range during the firing process of the glaze; the other is the formation of two crystals during the firing process of the glaze. A glass phase that is incompatible with each other (that is, glass phase separation); the third is to form a large number of uniformly distributed micro-bubbles with particle sizes in the visible light wavelength range during the firing process of the glaze. Amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
Inventor 刘阳董明堂熊春华
Owner JINGDEZHEN CERAMIC INSTITUTE
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