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Chromium-aluminum-zinc red pigment preparation method

A chrome-aluminum and pigment technology, applied in the field of preparation of chrome-aluminum-zinc red pigments, can solve the problems of uneven coloring, long time, expensive equipment cost, etc.

Inactive Publication Date: 2019-01-04
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid-phase method is to mix and grind the reactants in a certain proportion, and the ground mixed solid is calcined at high temperature to directly obtain the pigment powder. Although the solid-phase method is convenient for industrial production, the quality of the obtained product is poor and the color is uneven. The particles are large. For pigment powders, the color rendering ability of the product and the uniformity of the particles are particularly important factors affecting the quality of the pigment.
Moreover, the solid-phase method also has the disadvantages of high reaction temperature, long time, high energy consumption, low reactivity, and easy agglomeration of the reaction.
However, the wet chemical method has problems such as complex process and expensive equipment, which limit its application in industry.

Method used

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  • Chromium-aluminum-zinc red pigment preparation method
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  • Chromium-aluminum-zinc red pigment preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Zinc oxide, aluminum oxide, and chromium oxide are selected as raw materials, and the molar ratio of zinc element and aluminum element is 1:2. The total mass of zinc source and aluminum source accounts for 95% of the total mass of reactants, and chromium oxide is a coloring agent. The content of chromium oxide accounts for 5% of the total mass of the ingredients, and borax is selected as the mineralizer, and the content of borax is 7% of the mass of the reactant. After being mixed evenly, it is loaded into a ball mill tank.

[0034] (2) Add grinding balls according to the ball-to-material ratio of 30:1, cover the lid, and seal the ball mill jar.

[0035] (3) Put the ball mill jar into the hearth of the high-temperature energy ball mill for vacuuming.

[0036] (4) Start the ball mill, continue to rotate, and at the same time raise the temperature of the furnace to 700°C, and keep it warm for 0.5h.

[0037] (5) Turn off the ball mill and wait for the furnace to cool ...

Embodiment 2

[0039] (1) Zinc oxide, aluminum hydroxide, and chromium oxide are selected as raw materials, and the molar ratio of zinc to aluminum is 1:2. The total mass of zinc source and aluminum source accounts for 85% of the total mass of reactants, and chromium oxide is the colorant , the content of chromium oxide accounts for 15% of batching total mass, selects borax as mineralizer for use, and borax content is 5% of reactant quality, mixes and packs in the ball mill jar.

[0040] (2) Add grinding balls according to the ball-to-material ratio of 30:1, cover the lid, and seal the ball mill jar.

[0041] (3) Put the ball mill jar into the hearth of the high-temperature energy ball mill for vacuuming.

[0042] (4) Start the ball mill, continue to rotate, and at the same time raise the temperature of the furnace to 700°C and keep it warm for 3 hours.

[0043] (5) Turn off the ball mill and wait for the furnace to cool down to room temperature, and take out the ball mill jar to obtain chr...

Embodiment 3

[0045] (1) Zinc hydroxide, aluminum oxide, and chromium oxide are selected as raw materials, and the ingredients are formulated according to the molar ratio of zinc and aluminum elements at 1:2. The total mass of zinc source and aluminum source accounts for 95% of the total mass of the reactants, and chromium oxide is the colorant , the content of chromium oxide accounts for 5% of batching total mass, selects borax as mineralizer for use, and borax content is 8% of reactant quality, mixes and packs in the ball mill jar.

[0046] (2) Add grinding balls according to the ball-to-material ratio of 20:1, cover the lid, and seal the ball mill jar.

[0047] (3) Put the ball mill jar into the hearth of the high-temperature energy ball mill for vacuuming.

[0048] (4) Start the ball mill, continue to rotate, and at the same time raise the temperature of the furnace to 750° C., and keep it warm for 2 hours.

[0049] (5) Turn off the ball mill and wait for the furnace to cool down to ro...

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Abstract

The invention provides a chromium-aluminum-zinc red pigment preparation method. The method includes steps: taking a zinc-containing compound, an aluminum-containing compound and chromium oxide as reactants, adding a mineralizing agent, mixing, and adding into a ball milling tank; adding a grinding ball into the ball milling tank; putting the ball milling tank into a chamber of a high-temperature energy ball mill, and subjecting the chamber to vacuumizing treatment; starting the ball mill, keeping continuous rotation, heating the chamber to 700-950 DEG C, and keeping the temperature for 0.5-3h;shutting the ball mill, and taking out the ball milling tank after the chamber is cooled to the room temperature, so that high-quality chromium-aluminum-zinc red pigment powder can be obtained. The chromium-aluminum-zinc red pigment preparation method has advantages that high color uniformity and high quality of products are realized, a production process is simple, and low production cost is realized.

Description

technical field [0001] The invention relates to the technical field of pigment preparation, in particular to a method for preparing chrome aluminum zinc red pigment. Background technique [0002] Chromium Aluminum Zinc Red is a high-temperature artificial synthetic ceramic pigment with strong color rendering power and bright colors. The coloring mechanism is that the colorant Cr 2 o 3 Solid solution in ZnAl 2 o 4 A solid solution pigment is formed in the spinel lattice. Its pigment crystal has a stable structure, so its color is stable, its adaptability is strong, and it does not dissolve in the glaze melt. At present, the preparation methods of chromium aluminum zinc red pigments can be divided into two categories: solid phase method and wet chemical method. The solid-phase method is to mix and grind the reactants in a certain proportion, and the ground mixed solid is calcined at high temperature to directly obtain the pigment powder. Although the solid-phase method i...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C1/40
Inventor 李斌川张伟业陈建设刘奎仁韩庆王飞
Owner NORTHEASTERN UNIV
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