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Seed crystal introduced agate red ceramic pigment and preparation method thereof

A technology of ceramic pigment and crystal seed is applied in the field of agate red ceramic pigment and its preparation, which can solve the problems of affecting the quality of pigment and weak research, and achieve the effects of improved stability, high redness value and good high temperature resistance.

Inactive Publication Date: 2012-11-14
佛山市南海万兴材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for a long time, people's research on the synthesis mechanism of agate red ceramic pigments is quite weak, and the factors affecting its synthesis are very complicated. As long as there is a slight error in a certain link in the middle, it will affect the quality of the final pigment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Seed crystal preparation:

[0037] 1) Prepare and mix calcium carbonate, tin dioxide, quartz, and chrome green in a molar ratio of 1:1:1:0.125;

[0038] 2) According to the above mixture: agate ball stone: water = 100:500:60; ball mill for about 72 hours, after ball milling, the particle size reaches D 90 ≤5um;

[0039] 3) Dry the above mixture at a temperature below 150°C, so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325-mesh sieve;

[0040] 4) Mix the above-mentioned sieved mixture with boric acid having a concentration of 99% in a mass ratio of 96.5:3.5 and stir evenly;

[0041] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30°C-500°C, heat up for 4H; 500°C-1000°C, heat up for 4H; ;

[0042] 6) Ball mill the above-mentioned calcined product, the particle size is D 90 Reach 3-5um, dry (≤150°C), pass through a 325-mesh sieve, that is, the finished product of the ...

Embodiment 2

[0060] 1. Seed crystal preparation:

[0061] 1) Prepare and mix calcium carbonate, tin dioxide, quartz, and chrome green in a molar ratio of 1:1:1:0.125;

[0062] 2) According to the above mixture: agate ball stone: water = 100: 500: 60; ball mill for about 78 hours, after ball milling, the particle size reaches D 90 ≤5um;

[0063] 3) Dry the above mixture at a temperature below 150°C, so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325-mesh sieve;

[0064] 4) Mix the above-mentioned sieved mixture with boric acid having a concentration of 99% in a mass ratio of 95:5 and stir evenly;

[0065] 5) Put the above mixture into a crucible for calcination. The process conditions for calcination are: 30°C-500°C, heat up for 4H; 500°C-1000°C, heat up for 4H; 1000°C-1300°C, heat up for 5H; cool down;

[0066] 6) Ball mill the above-mentioned calcined product, the particle size is D 90 Reach 3-5um, dry (≤150°C), pass through a 325-mesh si...

Embodiment 3

[0084] 1. Seed crystal preparation:

[0085] 1) Prepare and mix calcium carbonate, tin dioxide, quartz, and chrome green in a molar ratio of 0.9:1.1:1:0.135;

[0086] 2) Mix the above mixture with agate ball stones and water according to the mass ratio of 100:450:56, and use a ball mill for about 80 hours. After ball milling, the particle size reaches D 90 ≤5um;

[0087] 3) Dry the above mixture at a temperature below 150°C, so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325-mesh sieve;

[0088] 4) Mix the above-mentioned sieved mixture with boric acid having a concentration of 99% in a mass ratio of 95:5 and stir evenly;

[0089] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30°C-500°C, heat up for 4H; 500°C-1000°C, heat up for 4H; ;

[0090] 6) Ball mill the above-mentioned calcined product, the particle size is D 90 Reach 3-5um, dry (≤150°C), pass through a 325-mesh sieve,...

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Abstract

The invention discloses a seed crystal introduced agate red ceramic pigment and a preparation method of the seed crystal introduced agate red ceramic pigment. The preparation method comprises the following steps of: (1) preparing seed crystals: evenly mixing calcium carbonate, stannic oxide, quartz and chrome green according to a molar ratio of (0.9-1.1):(0.9-1.1):(0.9-1.1):(0.115-0.135), mixing and grinding the obtained mixture, agate ball stone and water according to proportion by weight of 100:(450-550):(54-66) until the grain size achieves D90<=5mu m, drying and sieving the ground mixture, then adding boron-contained compounds which are 3%-5% of total weight, evenly mixing, burning, grinding and drying to obtain the seed crystals; and (2) preparing the pigment: evenly mixing calcium carbonate, stannic oxide, quartz and chrome green according to a molar ratio of (0.9-1.1):(0.9-1.1):(0.9-1.1):(0.115-0.135), adding the seed crystals which are 1%-3% of the total weight and the boron-contained compounds which are 3%-5% of the total weight, evenly mixing, burning, grinding and drying to obtain end products. The seed crystal introduced agate red ceramic pigment and the preparation method can reduce synthetic difficulties of the pigment and are strong in color development, bright in color and luster and good in thermostability.

Description

technical field [0001] The invention relates to the technical field of ceramic pigment production, in particular to an agate red ceramic pigment introduced with crystal seeds and a preparation method thereof. Background technique [0002] Chromium tin red, also known as agate red, is a high-temperature ceramic pigment. Because the pigment has a stable crystal structure, it can show a beautiful agate red color in an adapted basic glaze. Chromium tin red can be used in wall tiles, floor tiles, and sanitary porcelain to obtain good decorative effects, so it is one of the pigments widely used in high-end buildings and sanitary porcelain products. [0003] But for a long time, people's research on the synthesis mechanism of agate red ceramic pigment is quite weak, and the factors affecting its synthesis are very complicated. As long as there is a slight error in a certain link in the middle, it will affect the quality of the final pigment. Therefore, it is of great significance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
Inventor 周占明
Owner 佛山市南海万兴材料科技有限公司
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