Opacified glaze and preparation method thereof

A technology of opacifying glaze and opacifying agent, which is applied in the field of opacifying glaze and its preparation, which can solve the problems of scarce resources, high cost, high viscosity of opacifying glaze at high temperature, etc., and achieve good opacifying effect, easy operation and simple process Effect

Active Publication Date: 2017-05-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tin oxide system opacity glaze has good opacification effect but is expensive and high cost; the zirconium-zirconium silicate system opacity glaze has high viscosity at high temperature, which is prone to glaze defects, and its resources are becoming more and more scarce, and the price has risen sharply in recent years; The opaque glaze of the titanium system tends to precipitate out of the melt in the form of rutile crystals during high-temperature sintering and crystallization, causing the glaze to change color

Method used

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  • Opacified glaze and preparation method thereof
  • Opacified glaze and preparation method thereof
  • Opacified glaze and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare a kind of opacity glaze, concrete method is as follows:

[0026] 1) Prepare glaze powder: weigh each raw material one by one according to the formula data in Table 1;

[0027] 2) Preparation of opacified glaze: put the glaze powder obtained in step 1) with ball stones and water in a mass ratio of 1:2:0.6 in a rapid mill and ball mill until the fineness is less than 0.1 wt% after passing through a 250 mesh sieve, and the obtained The glaze slurry is opacified glaze. The specific experimental formula and test results are shown in Table 1 below:

[0028] Table 1

[0029]

[0030] Apply the opacified glaze obtained in this example on the ceramic green body by dipping the glaze. The thickness of the glaze is 1.0 mm. After the glaze is dried, it is fired in a roller kiln. After the kiln is cooled, high white opacity ceramics are obtained, and the entire firing cycle is about 60-70 minutes. The glazed surface of the tiles fired in the above-mentioned manner has ...

Embodiment 2

[0032] Prepare two opacifying glazes, the specific method is as follows:

[0033] 1) Preparation of glaze powder: Weigh the following materials in parts by weight: 26 parts of albite, 6 parts of potassium feldspar, 30 parts of quartz, 15 parts of calcite, 10 parts of kaolin, 6 parts of potassium feldspar, barium titanate (the (2) 8 parts of zirconium silicate instead of barium titanate), 3 parts of talc, 2 parts of zinc oxide, and mix the weighed materials evenly to obtain glaze powder;

[0034] 2) Preparation of opacified glaze: put the glaze powder obtained in step 1) with ball stones and water in a mass ratio of 1:2:0.6 in a rapid mill and ball mill until the fineness is less than 0.1 wt% after passing through a 250 mesh sieve, and the obtained The glaze slurry is opacified glaze, and the water content of the glaze slurry is 38%.

[0035] 3) The specific experimental data and results are shown in Table 2 below:

[0036] Table 2

[0037]

[0038]

[0039] The two ki...

Embodiment 3

[0041] Prepare a kind of opacity glaze, concrete method is as follows:

[0042] 1) Preparation of glaze powder: Weigh the following materials in parts by weight: 26 parts of albite, 6 parts of potassium feldspar, 26 parts of quartz, 15 parts of calcite, 12 parts of kaolin, 6 parts of potassium feldspar, and 8 parts of barium titanate , 3 parts of talc, 4 parts of zinc oxide, and mix the weighed materials evenly to obtain glaze powder;

[0043]2) Preparation of opacified glaze: put the glaze powder obtained in step 1) with ball stones and water in a mass ratio of 1:2:0.6 in a rapid mill and ball mill until the fineness is less than 0.1 wt% after passing through a 250 mesh sieve, and the obtained The glaze slurry is opacified glaze. The specific experimental data and results are shown in Table 3 below:

[0044] table 3

[0045]

[0046] Apply the opacified glaze obtained in this example on the ceramic green body by spraying glaze, the glaze thickness is 1.0mm, after the gl...

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Abstract

The invention relates to opacified glaze and a preparation method thereof. The opacified glaze is prepared by using barium titanate power of a tetragonal system as an opacifier, wherein the particle size of the barium titanate power is 400-800 nm. The preparation method comprises the following steps that 1, glaze powder is prepared, wherein raw materials for preparing the glaze powder are weighed in proportion and then are mixed evenly to obtain the glaze powder; 2, the opacified glaze is prepared, wherein the glaze powder obtained in the step 1, water and ballstone are arranged in a rapid mill to be milled till screen residues after screening of a 250-mesh screen are 0.1% or below by weight, the obtained glaze slip is the opacified glaze. The high-temperature stable barium titanate power of the tetragonal system is used as the opacifier to prepare the opacified glaze good in opacifying effect and high in whiteness after firing, and the used raw materials are environmentally friendly. Compared with the prior art, the opacified glaze further has the advantage of low cost. In addition, the preparation method of the opacified glaze is simple in process and easy to operate and facilitates large-scale production.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and relates to an opacified glaze and a preparation method thereof. Background technique [0002] Opaque glaze is one of the commonly used glazes for daily-use ceramics, also known as devitrification glaze. When visible light passes through the glaze layer of ceramics, it is scattered by the dispersed phase in the glaze and produces opacity, which is devitrification. Its good covering property enables a large amount of low-quality minerals to be used in blanks, so it has been widely used in my country's ceramic industry. The formation mechanism of opacity glaze can be divided into three types: one is the formation of a large number of tiny crystals with smaller particles and uniform distribution during the firing process of the glaze; The third is to form a large number of uniformly distributed tiny bubbles with particle sizes in the visible light wavelength range during the firing process of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/20C04B41/86C01G23/00
CPCC01G23/006C03C8/20C04B41/5022C04B41/86
Inventor 裴新美唐赋李苗何京晶戴英
Owner WUHAN UNIV OF TECH
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