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Zirconium silicate coated cadmium yellow ceramic pigment and preparation method thereof

A technology of ceramic pigment and zirconium silicate, which is applied in the field of zirconium silicate wrapped cadmium yellow ceramic pigment and its preparation, can solve the problems of poor stability and easy oxidation and blackening, and achieves improved fineness and activity, good high temperature resistance performance, Strong hair color effect

Inactive Publication Date: 2013-06-12
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

At present, cadmium yellow in the market has color in ceramic glazes below 800°C, but it has the problem of poor stability and easy oxidation and blackening. At the same time, it also has the problem of being completely oxidized in ceramic products without color when the use condition exceeds 800°C.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of zirconium silicate wrapped cadmium yellow ceramic pigment of the present invention comprises the following steps:

[0027] 1) Dissolve zirconium oxychloride and cadmium sulfate in molar ratio (1.3-1.5): (0.13-0.15) in water to prepare A solution with a mass concentration of 27%-45%;

[0028] 2) Dissolve sodium sulfide, sodium metasilicate pentahydrate and sodium hydroxide in molar ratio (0.25-0.35): (1.13-1.23): (0.31-0.35) in water to prepare a mass concentration of 7%-15% B solution;

[0029] 3) Stir the B solution, and at the same time, titrate with the A solution to carry out the neutralization reaction until the pH value is 8.0-8.5 and the reaction is completed;

[0030] 4) Press filter after the reaction is completed, and then dry until the moisture content is less than 4%, to obtain a dried product;

[0031] 5) Grinding the dry matter so that the fineness is 400-500 mesh;

[0032] 6) Mix 100 parts by weight of the crushed dry product ...

Embodiment 1

[0042] The preparation method of the zirconium silicate wrapped cadmium yellow ceramic pigment in the present embodiment comprises the following steps:

[0043] 1) Dissolve zirconium oxychloride and cadmium sulfate in water at a molar ratio of 1.3:0.15 to prepare A solution with a mass concentration of 27%, and mix well;

[0044] 2) Dissolve sodium sulfide, sodium metasilicate pentahydrate and sodium hydroxide in water at a molar ratio of 0.25:1.13:0.31 to prepare B solution with a mass concentration of 15%, and mix well;

[0045] 3) Put the B solution in the stirring reaction barrel, titrate with the A solution while stirring, and carry out the neutralization reaction. The reaction time is 4 hours. After the reaction is completed, the pH value is 8.0;

[0046] 4) After the reaction is completed, press filter the obtained semi-finished product, and dry it at a temperature of 250°C until the moisture content is less than 4%;

[0047] 5) Grinding the dried semi-finished product...

Embodiment 2

[0065] The preparation method of the zirconium silicate wrapped cadmium yellow ceramic pigment in the present embodiment comprises the following steps:

[0066] 1) Dissolve zirconium oxychloride and cadmium sulfate in water at a molar ratio of 1.5:0.15 to prepare A solution with a mass concentration of 27%, and mix well;

[0067] 2) Dissolve sodium sulfide, sodium metasilicate pentahydrate and sodium hydroxide in water at a molar ratio of 0.25:1.13:0.31 to prepare B solution with a mass concentration of 15%, and mix well;

[0068] 3) Put the B solution in the stirring reaction barrel, titrate with the A solution while stirring, and carry out the neutralization reaction. The reaction time is 5 hours. After the reaction is completed, the pH value is detected to be 9;

[0069] 4) After the reaction is completed, press filter the obtained semi-finished product, and dry it at a temperature of 250°C until the moisture content is less than 4%;

[0070] 5) Grinding the dried semi-fin...

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Abstract

The invention discloses a method for preparing a zirconium silicate coated cadmium yellow ceramic pigment. The method comprises the following steps of: (1) dissolving zirconium oxychloride and cadmium sulfate into water in the molar ratio of (1.3-1.5):(0.13-0.15) to prepare a 27-45% solution A; (2) dissolving sodium sulfide, sodium metasilicate pentahydrate and sodium hydroxide in the molar ratio of (0.25-0.35 ):(1.13-1.23):(0.31-0.35) into water to prepare a 7-15% solution B; (3) stirring the solution B, titrating by using the solution A, and carrying out neutralization reaction until the pH value reaches 8.0-8.5; (4) filtering by pressing after the reaction finishes, and drying until the content of water is less than 4%; (5) grinding the dried substance until the finesses reaches 400-500 meshes; (6) mixing 100 parts by weight of ground dried substance with 3-5 parts by weight of a mineralizing agent uniformly, calcining at the temperature of 1,000-1,050 DEG C, mixing 45-55 parts by weight of a calcination product with 25-35 parts by weight of 45-55% sulfuric acid, soaking the mixture for 20-48 hours, washing with water until the mixture is neutral, grinding until the finesses D90 reaches 22-28mum, and drying to obtain the zirconium silicate coated cadmium yellow ceramic pigment.

Description

technical field [0001] The invention relates to a preparation method of a ceramic pigment, in particular to a zirconium silicate-wrapped cadmium yellow ceramic pigment and a preparation method thereof. Background technique [0002] With the development of social economy, a large number of ceramic products are required in the decoration market and people have higher and higher requirements for decorative effects. At present, cadmium yellow in the market has color in ceramic glazes below 800°C, but it has the problem of poor stability and easy oxidation and blackening. At the same time, it also has the problem of complete oxidation and no color development in ceramic products when the use condition exceeds 800°C. . [0003] It can be seen that how to carry out technical improvement, provide a zirconium silicate-wrapped cadmium yellow ceramic pigment and its preparation method, the obtained zirconium silicate-wrapped cadmium yellow ceramic pigment has strong color development,...

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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