Opacifier, preparation method thereof and ceramic glaze with the opacifier

A technology of opacifying agent and content, which is applied in the field of ceramic glazes, can solve the problems of inhibiting the promotion and application of titanium glazes, and achieve the effects of avoiding yellowing of ceramic glazes, high glaze whiteness, good hiding power and smoothness

Active Publication Date: 2015-09-16
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the related art, the traditional titanium glaze is to directly add titanium oxide as an opacifying agent to the raw glaze, which is often caused by the precipitation of rutile TiO 2 As a result, the glaze surface is yellow, which inhibits the promotion and application of titanium glaze.

Method used

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  • Opacifier, preparation method thereof and ceramic glaze with the opacifier
  • Opacifier, preparation method thereof and ceramic glaze with the opacifier
  • Opacifier, preparation method thereof and ceramic glaze with the opacifier

Examples

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Effect test

Embodiment 1

[0043] The composition of the emulsifying agent provided in this embodiment includes: 5% calcium carbonate, 40% titanium dioxide, 0.05% dispersing aid and the balance of water.

[0044] Preparation:

[0045] S11: Using water as the medium, add calcium carbonate to it to make it account for 10% of the total amount, disperse evenly and grind thoroughly to obtain a calcium carbonate suspension, in which the particle size distribution of calcium carbonate requires D 50 1-5 microns, D 90 1-10 microns;

[0046] S12: Using the same amount of water as in step S11 as the medium, add titanium dioxide to it, accounting for 80% of the total amount, and then add a dispersing aid to account for 0.1% of the total, and grind thoroughly to obtain a titanium dioxide suspension, wherein titanium White powder particle size distribution requirements D 50 0.2-1 micron, D 90 1-10 microns;

[0047] S13: Mix the calcium carbonate suspension and the titanium dioxide suspension evenly, and perform ...

Embodiment 2

[0050] The composition of the emulsifying agent provided in this embodiment includes: 40% of calcium carbonate, 5% of titanium dioxide, 2.5% of dispersing aid and the balance of water.

[0051] Preparation:

[0052] S21: Using water as the medium, add calcium carbonate to it to make it account for 80% of the total amount, disperse evenly and grind thoroughly to obtain a calcium carbonate suspension, wherein the particle size distribution of calcium carbonate requires D 50 1-5 microns, D 90 1-10 microns;

[0053] S22: Using the same amount of water as in step S21 as a medium, add titanium dioxide to it to make it account for 10% of the total amount, then add a dispersing aid (dispersant aid DC-854) to account for 5% of the total amount, and grind thoroughly , to obtain titanium dioxide suspension, wherein the particle size distribution of titanium dioxide requires D 50 0.2-1 micron, D 90 1-10 microns;

[0054] S23: Mix the calcium carbonate suspension and the titanium diox...

Embodiment 3

[0057] The emulsifying agent that present embodiment provides, its composition comprises:

[0058] Calcium carbonate 10%, titanium dioxide 35%, dispersing aid 2%, and water balance. Among them, titanium dioxide is anatase titanium dioxide, and TiO 2 The content exceeds 95%; the purity of calcium carbonate is not less than 99.9%; among them, the content of lead, chromium, cadmium and arsenic is less than 0.0001%, and the content of mercury is less than 0.00001%; ​​the whiteness of calcium carbonate is ≥ 93%, and the specific surface area is ≥ 0.3m 2 / g, oil absorption ≤50g / 100g.

[0059] Preparation:

[0060] S31: Using water as the medium, add calcium carbonate to it, accounting for 20% of the total amount, disperse evenly and grind thoroughly to obtain a calcium carbonate suspension, in which the particle size distribution of calcium carbonate requires D 50 1-5 microns, D 90 1-10 microns;

[0061] S32: Using the same amount of water as in step S31 as the medium, add tita...

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Abstract

The invention relates to opacifier, a preparation method thereof and ceramic glaze with the opacifier and belongs to the field of ceramic glaze. The opacifier is mainly prepared from 5-40% of calcium carbonate, 5-40% of titanium dioxide, 0.05-2.5% of dispersing aid and rest of water by weight. The ceramic glaze with the opacifier is prepared from raw materials including 6 to 10 parts of opacifier, 30 to 35 parts of quartz, 25 to 30 parts of potash feldspar, 2 to 4 parts of aluminum oxide, 10 to 12 parts of calcite, 4 to 6 parts of dolomite, 2 to 3 parts of zinc oxide, 4 to 5 parts of kaolin and 1 to 2.5 parts of clinker by weight. Because the opacifier is composite particle which uses calcium carbonate as core and crystalline titanium dioxide as film, the opacifier can enable the ceramic glaze to form stable titanite crystal form, and the ceramic glaze surface yellowing due to directly adding titanium dioxide particles is effectively avoided.

Description

technical field [0001] The invention relates to the field of ceramic glazes, in particular to an opacifying agent, a preparation method thereof and ceramic glazes containing the opacifying agent. Background technique [0002] Glazes containing opacifiers are an important raw material widely used in the production of architectural ceramics and sanitary ceramics in my country, mainly to cover the bottom of ceramic blanks. At present, the zirconium opacifying glaze containing zirconium silicate opacifying agent is the most widely used. However, from the point of view of performance, zirconium opacifying glazes have defects such as low hiding power, high viscosity at high temperature, uneven glaze surface, etc., and zircon sand, the raw material for preparing zirconium opacifying agents, is heavily dependent on imports, expensive and radioactive. A series of problems, so, urgently need the novel emulsifying agent of good performance, cheap and easy to popularize and use to repl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/14C04B41/86
Inventor 敖卫华丁浩常亮
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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