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Preparation method for ultra-fine mica powder

An ultra-fine mica powder, mica technology, applied in chemical instruments and methods, inorganic pigment treatment, dyeing physical treatment, etc., can solve the problem of poor uniformity and dispersion of ultra-fine mica powder, poor mica powder performance, and unfavorable large-scale production. and other problems, to achieve the effect of high comprehensive quality, small equipment investment and low preparation cost

Inactive Publication Date: 2017-10-20
ANHUI HENGHAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrafine mica powder is a flaky fine powder obtained by crushing and grinding mica flakes. Due to the hard texture of mica powder, in the prior art, the production process of ultrafine mica powder is cumbersome and difficult to produce, which is not conducive to large-scale production. And the uniformity and dispersibility of the ultrafine mica powder produced are relatively poor, resulting in the poor performance of the obtained mica powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of superfine mica powder that the present invention proposes, comprises the following steps:

[0020] S1. Select the mica mineral raw material with the required performance, and add the mica mineral raw material into the pulverizer for coarse pulverization to obtain powder A with a particle size of 0.3 mm;

[0021] S2. Add the powder A obtained in step S1 to a ball mill, add steel balls with a diameter of 3mm of 24% of the total amount of the powder A, and fully grind for 40 minutes to obtain a fine powder B;

[0022] S3. Add the fine powder B obtained in step S3 to an ultrasonic disperser, add deionized water 5 times the total amount of the fine powder B, and after ultrasonic dispersion for 20 minutes, add 1.05 times the total amount of the fine powder B to a concentration of 46%. The sulfuric acid solution continued to disperse for 30 minutes to obtain solution C;

[0023] S4. Place the solution C obtained in step S3 in a sintering furnac...

Embodiment 2

[0025] A kind of preparation method of superfine mica powder that the present invention proposes, comprises the following steps:

[0026] S1. Select the mica mineral raw material with required properties, and add the mica mineral raw material into the pulverizer for coarse pulverization to obtain powder A with a particle size of 0.2 mm;

[0027] S2. Add the powder A obtained in step S1 to a ball mill, add 18% of the total amount of the powder A to a steel column with a diameter of 4 mm, and fully grind for 35 minutes to obtain a fine powder B;

[0028] S3. Add the fine powder B obtained in step S3 into an ultrasonic disperser, add deionized water 4.5 times the total amount of the fine powder B, and after ultrasonic dispersion for 15 minutes, add 1.15 times the total amount of the fine powder B to a concentration of 68%. The phosphoric acid solution continued to disperse for 32 minutes to obtain solution C;

[0029] S4. Place the solution C obtained in step S3 in a sintering f...

Embodiment 3

[0031] A kind of preparation method of superfine mica powder that the present invention proposes, comprises the following steps:

[0032] S1. Select the mica mineral raw material with required performance, and add the mica mineral raw material into the pulverizer for coarse pulverization to obtain powder A with a particle size of 0.5 mm;

[0033] S2, adding powder A obtained in step S1 to a ball mill, adding 36% of the total amount of powder A steel balls with a diameter of 1 mm, and fully grinding for 50 minutes to obtain fine powder B;

[0034] S3. Add the fine powder B obtained in step S3 to an ultrasonic disperser, add deionized water 5.5 times the total amount of the fine powder B, and after ultrasonic dispersion for 22 minutes, add 0.9 times the total amount of the fine powder B to a concentration of 50%. The sulfuric acid solution continued to disperse for 28 minutes to obtain solution C;

[0035] S4. Place the solution C obtained in step S3 in a sintering furnace at 6...

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Abstract

The invention discloses a preparation method for ultra-fine mica powder. The method comprises the following steps: a mica raw mineral material is added to a pulverizer, and coarse crushing is performed, so that powder A is obtained; the powder A is added to a ball grinder, a first grinding medium is added, and full grinding is performed, so that fine powder B is obtained; the fine powder B is added to an ultrasonic dispersion machine, deionized water and an acid solution are successively added, and ultrasonic dispersion is performed, so that a solution C is obtained; and the solution C is placed in a sintering furnace, high-temperature sintering is performed, the obtained sintered products are added to a ball grinder, a second grinding medium is added, and full grinding is performed, so that the required ultra-fine mica powder is obtained. According to the invention, the preparation process is simple, equipment investment is small, and preparation costs are low, with the help of the grinding media, the required mica mineral powder is ground and processed by using a two-stage grinding method, and the mica fine powder is subjected to acid activation, ultrasonic dispersion and high-temperature sintering treatment before the second grinding, and the obtained ultra-fine mice powder has good homogeneity and dispersity, high comprehensive quality, and a wide application range, and is worthy to be promoted.

Description

technical field [0001] The invention relates to the technical field of mica powder preparation, in particular to a preparation method of ultrafine mica powder. Background technique [0002] ​Mica powder is a non-metallic mineral that contains a variety of components, mainly SiO 2 , the content is generally around 49%, Al 2 o 3 The content is about 30%; mica powder has good elasticity, toughness, insulation, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesion and other characteristics. Mica powder is an excellent additive, which is widely used in electrical appliances, welding electrodes, rubber, plastics, papermaking, paints, coatings, pigments, ceramics, cosmetics, new building materials and other industries. It has a wide range of uses. Ultrafine mica powder is a flaky fine powder obtained by crushing and grinding mica flakes. Due to the hard texture of mica powder, in the prior art, the production process of ultrafine mica pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/04C09C3/06
CPCC09C1/405C09C3/006C09C3/041C09C3/043C09C3/06
Inventor 关洪勇万斌
Owner ANHUI HENGHAO SCI & TECH