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High temperature bright red glaze and its preparation process

A bright red, high-temperature technology, applied in the field of high-temperature bright red glaze and its preparation, can solve the problems of application limitations, high temperature resistance, poor thermal stability, etc., achieve pure and saturated hue, reduce decomposition speed, and increase active energy.

Inactive Publication Date: 2006-05-03
胡天霏 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it is not resistant to high temperature and has poor thermal stability. When it is heated in the air, it will start to decompose when it exceeds 500 ° C, and the color will fade. It can only be made into ceramic low-temperature red pigments (such as pepper red) and low-temperature red glaze.
The disadvantages of cadmium sulfoselenide greatly restrict its application in ceramic production. Therefore, it is still a big problem for the ceramic industry to solve the problem of using cadmium sulfoselenide in ceramic production at high temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0008] 1. Preparation of active negative catalyst: slowly add sodium hydroxide solution to the potassium fluorotantalate solution, and stir at the same time until the precipitation no longer increases, let it stand for a while, then filter, wash with water until the effluent is close to neutral, and wash the The material is dried at a temperature of 150° C. to obtain a negative catalyst, tantalum pentoxide. In order to further improve the inhibitory effect of the negative catalyst, carry out active treatment to the negative catalyst: mix and grind according to the negative catalyst: magnesium oxide: zinc oxide weight ratio of 10: 0.2: 0.2, rapidly heat to 1200 ° C, and then quench , that is, an active negative catalyst is obtained.

[0009] Two, get the above-mentioned active negative catalyst 8, lead silicate 49, magnesium oxide 2, calcium oxide 5, sodium oxide 5, cadmium sulfur selenide 8, cerium dioxide 4, lanthanum oxide 3, lithium silicate 1, three by weight % Diboron ox...

Embodiment approach 2

[0012] 1. Preparation of active negative catalyst: slowly add sodium hydroxide solution to the potassium fluorotantalate solution, and stir at the same time until the precipitation no longer increases, let it stand for a while, then filter, wash with water until the effluent is close to neutral, and wash the The material is dried at a temperature of 150° C. to obtain a negative catalyst, tantalum pentoxide. In order to further improve the inhibitory effect of the negative catalyst, carry out active treatment to the negative catalyst: mix and grind according to the negative catalyst: magnesium oxide: zinc oxide weight ratio of 10: 0.5: 0.4, rapidly heat to 1250 ° C, and then quench , that is, an active negative catalyst is obtained.

[0013] Two, get the above-mentioned active negative catalyst 10, lead silicate 47, magnesium oxide 2, calcium oxide 5, sodium oxide 5, cadmium sulfur selenide 10, cerium dioxide 3, lanthanum oxide 3, lithium silicate 1, three by weight % Diboron ...

Embodiment approach 3

[0016] 1. Preparation of active negative catalyst: slowly add sodium hydroxide solution to the potassium fluorotantalate solution, and stir at the same time until the precipitation no longer increases, let it stand for a while, then filter, wash with water until the effluent is close to neutral, and wash the The material is dried at a temperature of 200°C to obtain a negative catalyst, tantalum pentoxide. In order to further improve the inhibitory effect of the negative catalyst, the negative catalyst is then subjected to active treatment: mix and grind the negative catalyst: magnesium oxide: zinc oxide weight ratio of 10:1:2, rapidly heat to 1300 ° C, and then quench , that is, an active negative catalyst is obtained.

[0017] Two, get the above-mentioned active negative catalyst 6, lead silicate 52, magnesium oxide 3, calcium oxide 6, sodium oxide 4, cadmium sulfur selenide 7, cerium dioxide 2, lanthanum oxide 2, lithium silicate 1, three by weight % Diboron oxide 16, potas...

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PUM

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Abstract

The invention discloses a high-temperature bright red glaze and a preparation method thereof. The components of the high-temperature bright red glaze are (percentage by weight): active negative catalyst 0.1-28%, lead silicate 40-56%, magnesium oxide 1-5%, oxide Calcium 5-10%, sodium oxide 1-5%, sulfur selenide 3-20%, cerium oxide 0.5-10%, lanthanum oxide 0.1-3%, lithium silicate 0.2-8%, boron trioxide 3 ~ 20%, potassium oxide 1 ~ 5%, the preparation method is to add water 50% to the above-mentioned high-temperature red glaze components, grind, filter, and then soak in hydrochloric acid with a concentration of 2 ~ 5% for 5 ~ 9 days, filter, Wash with water until the pH value of the liquid is not lower than 5, and dilute the washed final material with water to 40-45 baume. The refractoriness of the high-temperature bright red glaze of the present invention can reach 1200-1350°C, which is enough to realize the baking and drawing of gold on the bright red glaze surface of ceramics. The ceramic products fired by it have bright color, uniform color development and bright glaze surface, which can be used for high-grade art porcelain. Decorative materials can also be used for glazed decoration of daily-use porcelain.

Description

Technical field: [0001] The invention relates to a high-temperature scarlet glaze and a preparation method thereof. Background technique: [0002] Cadmium sulfoselenide plays an important role in ceramic pigments because of its bright red color. Its disadvantage is that it is not resistant to high temperature and has poor thermal stability. When heated in the air, it will start to decompose when it exceeds 500°C, and the color will fade. It can only be made into ceramic low-temperature red pigments (such as capsicum red) and low-temperature red glaze. The disadvantages of cadmium sulfoselenide greatly restrict its application in ceramic production. Therefore, it is still a big problem for the ceramic industry to solve the problem of using cadmium sulfoselenide in ceramic production at high temperature. Invention content: [0003] The object of the present invention is to provide a high-temperature red glaze that can inhibit the decomposition of cadmium sulfur selenide and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/22C03C8/10
CPCC03C8/10
Inventor 胡天霏胡晓鸿胡晓沩
Owner 胡天霏