Preparation method for special activation powder for nanoscale painting by using coal-series kaolin

A coal-based kaolin, nano-scale technology, applied in chemical instruments and methods, coatings, fibrous fillers, etc., can solve the problems of application limitations and different structures, and achieve the effects of reducing moisture, eliminating air bubbles, and eliminating odors

Active Publication Date: 2016-03-02
INNER MONGOLIA TIANZHIJIAO KAOLIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it is associated with coal, its appearance is very different from non-coal series kaolin, and its structure is also slightly different, so its application is greatly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Coal-series kaolin raw ore is prepared into 300-500-mesh particles by using advanced equipment vertical high-pressure mill, and then prepared into slurry, wet-ground into kaolin powder with a particle size of 1-5μm, and then dried and depolymerized , sent to the feeding system of the rotary kiln, and calcined at a high temperature of 650-920°C in the rotary kiln for 1-3 hours. The ultra-fine and highly active metakaolin prepared by secondary depolymerization will be mixed according to the mass ratio of 350:320:2000 Mix superfine and highly active metakaolin powder, industrial sodium hydroxide, and industrial water, stir at room temperature for 2 hours, and uniformly prepare a gel reactant, age for 6 hours, start stirring and heat up to crystallize, and the heating temperature is 55°C. The heating time is 24 hours. After crystallization, filter through the plate and frame, wash with tap water until the pH is 10.5, dry in the oven, and then enter the rotary kiln again for ...

Embodiment 2

[0015] Coal-series kaolin raw ore is prepared into 300-500-mesh particles by using advanced equipment vertical high-pressure mill, and then prepared into slurry, wet-ground into kaolin powder with a particle size of 1-5μm, and then dried and depolymerized , sent to the feeding system of the rotary kiln, and calcined in the rotary kiln at a high temperature of 650-920°C for 1-3 hours, and the ultra-fine and highly active metakaolin prepared by secondary depolymerization, according to the mass ratio of 380:360:2400 Mix ultra-fine and highly active metakaolin powder, industrial sodium hydroxide, and industrial water, stir at room temperature for 2 hours, and uniformly prepare a gel reactant, age for 8 hours, start stirring and heat up to crystallize, and the heating temperature is 75°C. The heating time is 30 hours. After crystallization, filter through the plate frame, wash with tap water until the pH is 10.5, dry in the oven, and then enter the rotary kiln again for calcination ...

Embodiment 3

[0017] Coal-series kaolin raw ore is prepared into 300-500-mesh particles by using advanced equipment vertical high-pressure mill, and then prepared into slurry, wet-ground into kaolin powder with a particle size of 1-5μm, and then dried and depolymerized , sent to the feeding system of the rotary kiln, and calcined at a high temperature of 650-920°C in the rotary kiln for 1-3 hours, and the ultra-fine and highly active metakaolin prepared by secondary depolymerization, according to the mass ratio of 400:380:2600 Mix ultra-fine and highly active metakaolin powder, industrial sodium hydroxide, and industrial water, stir at room temperature for 2 hours, and uniformly prepare a gel reactant, age for 8 hours, start stirring and heat up to crystallize, and the heating temperature is 95°C. The heating time is 36 hours. After crystallization, filter through the plate frame, wash with tap water until the pH is 10.5, dry in the oven, and then enter the rotary kiln again for calcination ...

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PUM

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Abstract

The present invention relates to a preparation method for special activation powder for nanoscale painting by using coal-series kaolin. The preparation method is characterized by: preparing coal-series kaolin into ultra fine high-activity metakaolin; converting the metakaolin into a silicon-aluminum compound with very strong activity through high-temperature activation; uniformly mixing the ultra fine high-activity metakaolin power, sodium hydrate and water to obtain a gel reactant; ageing the gel reactant for 6-9 hours after the gel reactant is uniformly stirred; beginning steps of stirring, increasing the temperature for heating and crystallization, wherein the temperature is 55-95 DEG C, and the time is 24 hours to 36 hours; performing filtration, washing, drying after the crystallization; then placing the mixture into a rotary kiln again and performing high-temperature calcination at 450-650 DEG C, wherein the calcination time is 1-3 hours; and obtaining special activation powder for 300-500 nanoscale painting. The preparation method has the advantages that Inner Mongolia coal-series kaolin is used as a raw material to prepare the special activation powder for the nanoscale painting; the prepared activation powder not only has a good effect of kaolin when the kaolin is used in painting, but also has the effects of reducing water content, eliminating air bubbles and improving the uniformity and strength of materials.

Description

technical field [0001] The invention relates to a method for preparing special activated powder for nano-scale coatings from coal series kaolin, in particular to a method for synthesizing special activated powder for nano-scale coatings by modifying coal series kaolin, and belongs to the field of preparing special coating powders from coal series kaolin. Background technique [0002] Coal-measure kaolin is a kind of kaolin, so named because it is associated with coal. my country's coal-measure kaolin reserves are very rich, accounting for more than half of the world's total reserves. Abandoned coal series kaolin pollutes water quality and spontaneously combusts to generate H 2 S, SO 3 And other harmful gases, pollute the air, and caused the hazards of acid rain. A large amount of coal-measure kaolin has also encroached on more and more cultivated land, which constitutes a double damage to ecology and environment. Since very early our ancestors have mastered the art of us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/42C09C3/04C09C3/06C09D7/12
Inventor 周建国赵继承赵宇驰孔永林王永录桂海燕
Owner INNER MONGOLIA TIANZHIJIAO KAOLIN CO LTD
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