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Seed crystal introduced chromium tin pink ceramic pigment and preparation method thereof

The technology of ceramic pigment and crystal seed is applied in the field of chrome-tin pink ceramic pigment and its preparation, which can solve the problems of weak research on chrome-tin pink ceramic pigment, complicated synthesis factors, influence on the quality of pigment and the like.

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 chromium-tin pink 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

[0037] 1. Seed crystal preparation:

[0038] 1) Mix calcium carbonate, tin dioxide, quartz and chrome green at a molar ratio of 1:1:1:0.125;

[0039] 2) According to the above mixture: agate ball stone: water = 100: 500: 60; ball milling for about 72 hours, the particle size reaches D after ball milling 90 ≤5um;

[0040] 3) Dry the above mixture in a temperature environment below 150°C so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325 mesh screen;

[0041] 4) Mix the above-mentioned sieved mixture with boric acid with a concentration of 99% in a mass ratio of 96.5:3.5 and stir evenly;

[0042] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30℃-500℃, heating 4H; 500℃-1000℃, heating 4H; 1000℃-1300℃, heating 5H; 1300℃ constant temperature 5H, natural cooling ;

[0043] 6) Ball mill the above-mentioned calcined product to achieve a particle size D90 of 3-5um, dry (≤150℃), and pass through a 325...

Embodiment 2

[0062] 1. Seed crystal preparation:

[0063] 1) Mix calcium carbonate, tin dioxide, quartz and chrome green at a molar ratio of 0.9:1:0.9:0.135;

[0064] 2) According to the above mixture: agate ball stone: water = 100:550:66; ball milling with a ball mill for about 78 hours, the particle size after ball milling reaches D90≤5um;

[0065] 3) Dry the above mixture in a temperature environment below 150°C so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325 mesh screen;

[0066] 4) Mix the above sieved mixture with boric acid with a concentration of 99% in a mass ratio of 95:5 and stir evenly;

[0067] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30℃-500℃, heating 4H; 500℃-1000℃, heating 4H; 1000℃-1300℃, heating 5H; 1300℃ constant temperature 5H, natural cooling ;

[0068] 6) Ball mill the above-mentioned calcined product, particle size D 90 Reach 3-5um, dry (≤150℃), pass through a 325 mesh scr...

Embodiment 3

[0086] 1. Seed crystal preparation:

[0087] 1) Mix calcium carbonate, tin dioxide, quartz, and chrome green at a molar ratio of 0.9:1.1:1:0.135;

[0088] 2) Mix the above mixture with agate balls and water in a 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;

[0089] 3) Dry the above mixture in a temperature environment below 150°C so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325 mesh screen;

[0090] 4) Mix the above sieved mixture with boric acid with a concentration of 99% in a mass ratio of 95:5 and stir evenly;

[0091] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30℃-500℃, heating 4H; 500℃-1000℃, heating 4H; 1000℃-1300℃, heating 5H; 1300℃ constant temperature 5H, natural cooling ;

[0092] 6) Ball mill the above-mentioned calcined product, particle size D 90 Reach 3-5um, dry (≤150℃), pass through a 325 mesh...

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Abstract

The invention discloses seed crystal introduced chromium tin pink ceramic pigment and a preparation method of the seed crystal introduced chromium tin pink 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) to obtain a mixture, mixing and grinding the mixture, agate ball stones and water according to proportion by weight of 100:(450-550):(54-66) until the grain size achieves D90<=5mu m, drying and sieving grinded mixture, then adding boric acid which is 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):(0.005-0.05), adding the seed crystals which are 1%-3% of the total weight and boric acid which is 3%-5% of total weight, evenly mixing, calcinating, grinding and drying to obtain end products. The seed crystal introduced chromium tin pink ceramic pigment has the advantages the thermostability is high, the color development is strengthened, and the stability and the red degree value are improved.

Description

Technical field [0001] The invention relates to the technical field of production of ceramic pigments, in particular to a chromium tin pink ceramic pigment introduced with seed crystals and a preparation method thereof. Background technique [0002] Chrome-tin pink ceramic colorant is a kind of high-temperature ceramic colorant. Because the colorant has a stable crystal structure, it can show a beautiful chrome-tin pink color in the adapted basic glaze. The chrome tin pink is used in wall tiles, floor tiles, and sanitary porcelain to obtain a good decorative effect, so it is currently one of the widely used colors in high-end buildings and sanitary porcelain products. [0003] But for a long time, people's research on the synthesis mechanism of chrome-tin pink ceramic pigment is quite weak, and the factors that affect its synthesis are very complicated. As long as a slight error in a certain link in the middle, it will affect the quality of the final pigment. Therefore, it is of g...

Claims

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Application Information

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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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