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Method for preparing manganese doped corundum type pink coloring material

A corundum type, pink technology, applied in the direction of fibrous filler, dyeing physical treatment, etc., can solve the problems of affecting the environment, incomplete reaction, high calcination temperature, etc., and achieve the effect of uniform particle size, low cost and high purity

Active Publication Date: 2007-10-10
FOSHAN DOWSTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional process has the following disadvantages: on the one hand, high calcination temperature is required for production, and on the other hand, the metal salts of oxides, carbonates or hydroxides do not react completely at high temperatures; in addition, in order to reduce the calcination temperature and make each Oxides fully react at high temperatures. The traditional production process uses chlorides, fluorides, nitrates, borates and carbonates containing alkali metals and alkaline earth metals, and these salt compounds are decomposed at high temperatures. Gas can seriously affect the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Take by weighing 375 grams of aluminum nitrate (Al(NO 3 ) 3 .9H 2 O), 78 grams of aluminum hydroxide (Al(OH) 3 ), 37.65 grams of manganese nitrate (Mn(NO 3 ) 2 .4H 2 O) and 17.25 grams of manganese carbonate (MnCO 3 ) four kinds of raw materials, and mix into the solution of 200 milliliters of ethanol and water that the volume ratio is 30:70;

[0015] (2) Put the prepared mixed solution into the container connected to the liquid inlet pipe of the spray gun, and stir vigorously, and connect 0.4kg / cm2 to the air inlet of the spray gun 2 compressed air at pressure;

[0016] (3) Raise the temperature to 200°C in the front section of the continuous furnace, and raise the temperature to 550°C in the rear section and keep the temperature of the two sections of the continuous furnace constant;

[0017] (4) Open the spray gun and spray the mixed solution into the furnace for drying and atomization decomposition;

[0018] (5) Calcinate the powder collected at the end...

Embodiment 2

[0020] (1) Take by weighing 375 grams of aluminum nitrate (Al(NO 3 ) 3 .9H 2 O), 78 grams of aluminum hydroxide (Al(OH) 3 ), 50.2 grams of manganese nitrate (Mn(NO 3 ) 2 .4H 2 O) and 23 grams of manganese carbonate (MnCO 3 ) four kinds of raw materials, and mix into the solution of 200 milliliters of ethanol and water that the volume ratio is 30:70;

[0021] (2) Put the prepared mixed solution into the container connected to the liquid inlet pipe of the spray gun, and stir vigorously, and insert 0.5kg / cm2 into the air inlet of the spray gun 2 compressed air at pressure;

[0022] (3) Raise the temperature to 200°C in the front section of the continuous furnace, and raise the temperature to 550°C in the rear section and keep the temperature of the two sections of the continuous furnace constant;

[0023] (4) Open the spray gun and spray the mixed solution into the furnace for drying and atomization decomposition;

[0024] (5) Calcinate the powder collected at the end of...

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Abstract

This invention discloses a method for preparing manganese-doped corundum-type pink pigment. The method utilizes aluminum nitrate, aluminum hydroxide, manganese nitrate and manganese carbonate as the raw materials, and adopts spray-pyrolysis combined with calcination to obtain manganese-doped corundum-type pink pigment with certain particle sizes and uniform morphologies. The method has such advantages as low cost and simple process. The obtained manganese-doped corundum-type pink pigment has such advantages as uniform particle sizes, controllable components and high purity.

Description

technical field [0001] The invention relates to a preparation method of a manganese-doped corundum-type pink material. Background technique [0002] At present, the preparation process of the manganese-doped α-alumina corundum crystal-form pink material produced in the industry is to use the traditional production process, that is, the hydroxide, oxide or carbonate of manganese and aluminum according to a certain ratio. Calcining at high temperature, and finally grinding the calcined color material to a particle size of 1-10 microns by ball milling to obtain the required manganese-doped α-alumina corundum crystal form pink material. This traditional process has the following disadvantages: on the one hand, high calcination temperature is required for production, and on the other hand, the metal salts of oxides, carbonates or hydroxides do not react completely at high temperatures; in addition, in order to reduce the calcination temperature and make each Oxides fully react a...

Claims

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Application Information

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IPC IPC(8): C09C3/04C09C1/40
Inventor 王海张春霞田广
Owner FOSHAN DOWSTONG TECH
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