Superfine kaoline lamellar material preparation

A technology of ultra-fine kaolin and lamella materials, applied in the direction of benzanthrone dyes, etc., can solve the problems of time-consuming, large amount of potassium acetate, etc., and achieve the effect of simple peeling process, low production cost and low equipment requirements

Inactive Publication Date: 2008-07-23
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the amount of potassium acetate is large and time-consuming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: Preparation of Sandwich Composite

[0028] Weigh 3g and 2g of kaolin and potassium acetate respectively, put them into a vortex mixer, and mix evenly. When the air humidity is 70%, while grinding, potassium acetate absorbs the moisture in the kaolin and the air. After 35 minutes, an interlayer composite is obtained. thing;

[0029] Step Two: Intercalation of the Sandwich Complex

[0030] The intercalation compound prepared in the previous step was left to stand for 24 hours to complete the intercalation treatment of kaolin, and the intercalation rate was 83%;

[0031] The third step: washing and peeling

[0032] Inject 150 g of water into the interlayer compound obtained in the previous step, stir for 1 hour, dissolve the potassium acetate in the interlayer compound in water, and after centrifugal dehydration, repeat this step once, the potassium acetate is eluted, and the kaolin is naturally peeled off;

[0033] Step Four: Finished Product

[0034] The kaol...

Embodiment 2

[0036] Step 1: Preparation of Sandwich Composite

[0037] Weigh 3g and 3g of kaolin and potassium acetate respectively, put them into a vortex mixer, and mix them evenly. When the air humidity is 70%, while grinding, potassium acetate absorbs the moisture in the kaolin and the air. After 25 minutes, an interlayer composite is obtained. thing;

[0038] Step Two: Intercalation of the Sandwich Complex

[0039] The intercalation compound prepared in the previous step was left to stand for 24 hours to complete the intercalation treatment of kaolin, and the intercalation rate was 90%;

[0040] The third step: washing and peeling

[0041] Inject 150 g of water into the interlayer compound obtained in the previous step, stir for 1 hour, dissolve the potassium acetate in the interlayer compound in water, and after centrifugal dehydration, repeat this step once, the potassium acetate is eluted, and the kaolin is naturally peeled off;

[0042] Step Four: Finished Product

[0043] Bak...

Embodiment 3

[0045] Step 1: Preparation of Sandwich Composite

[0046] Weigh 3g and 4.5g of kaolin and potassium acetate respectively, put them into a vortex mixer, and mix evenly. When the air humidity is 70%, while grinding, potassium acetate absorbs the moisture in the kaolin and the air, and the interlayer is obtained after 20 minutes. Complex;

[0047] Step Two: Intercalation of the Sandwich Complex

[0048] Under the same air humidity as that of the previous step, the interlayer compound prepared in the previous step was left to stand for 24 hours to complete the intercalation treatment of kaolin, and the intercalation rate was 97%;

[0049] The third step: washing and peeling

[0050] Inject 150 g of water into the interlayer compound obtained in the previous step, stir for 1 hour, dissolve the potassium acetate in the interlayer compound in water, and after centrifugal dehydration, repeat this step once, the potassium acetate is eluted, and the kaolin is naturally peeled off;

...

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Abstract

A superfine kaolin flake material is prepared through mixing potassium acetate as sandwich agent with kaolin grinding, intercalating, laying aside, water washing, centrifugal separating of patassium acetate, stripping kaolin flakes, baking and grinding. Its advantages are high intercalating rate and slake-stripping effect, and low cost.

Description

technical field [0001] The invention relates to a preparation method of superfine kaolin sheet material, especially the interlayer process does not need to add water, directly utilizes the moisture-absorbing properties of potassium acetate, and can achieve good intercalation effects under various weather conditions, and can be directly washed with water A method for exfoliating kaolin belongs to the technical field of preparation of inorganic ultrafine sheet materials. Background technique [0002] Kaolin is a very important non-metallic mineral material, mainly used in papermaking, plastics, rubber, ceramics, pigments, cement, building materials, refractory materials and other industries. In the production of many high-end products in the above industries, the requirements for the particle size of raw materials are getting higher and higher, such as papermaking, coatings, fine ceramics, etc., all require the content of ultrafine particles (particle size is about 2 μm) in ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B3/08
Inventor 单永奎戴立益孙红刘志强何鸣元
Owner EAST CHINA NORMAL UNIV
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