Preparation method for modified fused zirconia and praseodymium yellow pigment

A technology for fused zirconia and praseodymium yellow material, applied in chemical instruments and methods, dyeing and washing, fibrous fillers, etc., can solve the problems of poor temperature resistance, easy fading, and poor temperature resistance, and reduce production costs. , Overcome the application bottleneck, the effect of good tinting strength

Active Publication Date: 2015-04-22
SANXIANG ADVANCED MATERIALS
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  • Abstract
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Problems solved by technology

[0003] After research, it was found that the reason why the ceramic pigments produced by fused zirconia such as praseodymium yellow material has poor temperature resistance is that the specific surface area of ​​fused zirconia powder is small and the reactivity is small, resulting in the inability of coloring elements in the process of pigment synthesis. Completely filled into the crystal lattice, the coloring power of the ceramic pigment will be weakened, and it will be easy to fade when used at high temperature, and the temperature resistance will be deteriorated

Method used

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  • Preparation method for modified fused zirconia and praseodymium yellow pigment
  • Preparation method for modified fused zirconia and praseodymium yellow pigment
  • Preparation method for modified fused zirconia and praseodymium yellow pigment

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preparation example Construction

[0022] Specifically, please refer to figure 1 As shown, the preparation method of the modified fused zirconia in the embodiment of the present invention includes:

[0023] Ordinary fused zirconia particles are ground into zirconia powder with a particle size of 3-5 μm;

[0024] The alkali metal and alkaline earth metal are mixed according to the weight ratio of 6~7:4~5, and then undergo high-temperature melting, water quenching treatment, water washing to neutrality, drying, and grinding to obtain active bonding particles with a particle diameter of 1-1.5 μm. agent, the high-temperature melting temperature is 1200-1400°C;

[0025] Mix the zirconia powder and the active binder, and treat it at 150-300°C and 1-3MPa for 10-20h, so that the zirconia powder and the active binder are completely bonded together to improve the reaction of fused zirconia activity, to obtain modified fused zirconia.

[0026] In the above examples, the specific surface area of ​​the zirconia powder ca...

Embodiment 1

[0043] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0044] Lithium and magnesium are mixed according to the weight ratio of 3:2, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1200°C;

[0045] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.3wt% of the total amount of the mixture, and then treated at 150°C and 1MPa for 10h to make the zirconia powder and the active binder completely bonded together to increase the reactivity of fused zirconia to obtain modified fused zirconia;

[0046] Fully mix the modified fused zirconia and other auxiliary raw materials of the praseodymium yellow material, put them in a bowl and heat them at a heating rate of 150°C / h for calcination, when the calcination temperature reaches 950°C,...

Embodiment 2

[0048] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;

[0049] Sodium and beryllium are mixed according to the weight ratio of 6:5, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1400°C;

[0050] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.2wt% of the total amount of the mixture, and treated at 300°C and 3MPa for 20h, so that the zirconia powder and the active binder are completely bonded. Together, improve the reactivity of fused zirconia to obtain modified fused zirconia;

[0051] Fully mix the modified fused zirconia and other auxiliary raw materials of the praseodymium yellow material, put them in a bowl and heat them at a heating rate of 180°C / h for calcination, when the calcination temperature reaches 1050°C, kee...

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Abstract

The invention relates to a preparation method for modified fused zirconia and praseodymium yellow pigment. The method includes: firstly conducting grinding and homogenization treatment to control the grain composition of fused zirconia in a reasonable scope, improving the specific surface area of fused zirconia, and then adding an appropriate active adhesive to conduct mixing so as to improve the reaction activity of fused zirconia, thus obtaining modified fused zirconia with specific surface area and reaction activity both close to chemical zirconium. The ceramic pigment produced from the modified fused zirconia has temperature resistance close to that of high temperature resistant ceramic pigment prepared from chemical zirconium. The modified fused zirconia can completely replace chemical zirconium to produce high temperature resistant ceramic pigment, the application bottleneck of fused zirconia in the high-end ceramic pigment field can be overcome, and the production cost of high temperature resistant ceramic pigments is reduced.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a preparation method of modified fused zirconia and praseodymium yellow material. Background technique [0002] my country is a big country in the production of ceramics. Zirconium-based pigments occupy an important position in the commonly used pigments for glazes and blanks of ceramics, such as zirconium-based three primary color pigments zirconium vanadium blue (Zr, V)SiO 4 , Zirconium Praseodymium Yellow (Zr, Pr) SiO 4 , Zirconium iron red (Zr, Fe) SiO 4 Therefore, the quality of fused zirconia, especially the high-temperature stability of the pigment, directly affects the quality of the produced zirconium vanadium blue and zirconium praseodymium yellow. At present, the ceramic pigments produced by fused zirconia, such as praseodymium yellow, will fade greatly and have weak tinting strength when used at a temperature above 1200°C, which cannot achieve the effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
CPCC01P2006/12C09C1/0009C09C3/003C09C3/006C09C3/06
Inventor 程诗忠包晓刚陈美育李有成李小毅陈清华
Owner SANXIANG ADVANCED MATERIALS
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