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Preparation method of sericite nano micro-sheets

A technology of nano-microflakes and sericite, which is applied in the field of sericite powder, can solve problems such as poor product performance and damage to the crystal structure of silicate minerals

Inactive Publication Date: 2016-07-06
ANHUI HENGHAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing technologies mostly use the traditional exfoliation of layered silicate minerals, most of which use simple mechanical exfoliation and grinding: such as wet and dry grinding, the disadvantage of this method of mechanical grinding alone is that it will be excessive Destroys the crystal structure of silicate minerals, resulting in poor performance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of sericite nano-chip that the present invention proposes, comprises the following steps:

[0020] S1, material preparation: select the required sericite mineral raw materials, manually select high-quality mineral raw materials, roughly crush the mineral raw materials, and then reprocess the sericite through wet stripping and grading processes. to get the first graded sericite;

[0021] S2, dispersion: put the sericite slurry into a high-temperature drying box, dry the sericite, then put the dried sericite into an ultrasonic disperser, disperse by ultrasonic waves, increase the mesh number of the sericite, and Put the dispersed sericite into a mixer, add an aqueous solution of an acidic medium or an alkaline medium to the mixer for chemical treatment, or add an organic solvent to extract, separate impurities, extract metals and their compounds, and keep the temperature at 35 ° C, fully Stir for 2 hours to get a kind of superfine sericite th...

Embodiment 2

[0025] A kind of preparation method of sericite nano-chip that the present invention proposes, comprises the following steps:

[0026] S1, material preparation: select the required sericite mineral raw materials, manually select high-quality mineral raw materials, roughly crush the mineral raw materials, and then reprocess the sericite through wet stripping and grading processes. to get the first graded sericite;

[0027] S2, dispersion: put the sericite slurry into a high-temperature drying box, dry the sericite, then put the dried sericite into an ultrasonic disperser, disperse by ultrasonic waves, increase the mesh number of the sericite, and Put the dispersed sericite into the mixer, add an aqueous solution of acidic medium or alkaline medium to the mixer for chemical treatment, or add organic solvents for extraction, separate impurities, extract metals and their compounds, and keep the temperature at 30°C-50°C ℃, fully stirred for 1-3 hours, you can get a kind of ultra-f...

Embodiment 3

[0031] A kind of preparation method of sericite nano-chip that the present invention proposes, comprises the following steps:

[0032] S1, material preparation: select the required sericite mineral raw materials, manually select high-quality mineral raw materials, roughly crush the mineral raw materials, and then reprocess the sericite through wet stripping and grading processes. to get the first graded sericite;

[0033] S2, dispersion: put the sericite slurry into a high-temperature drying box, dry the sericite, then put the dried sericite into an ultrasonic disperser, disperse by ultrasonic waves, increase the mesh number of the sericite, and Put the dispersed sericite into a mixer, add an aqueous solution of an acidic medium or an alkaline medium to the mixer for chemical treatment, or add an organic solvent to extract, separate impurities, extract metals and their compounds, and keep the temperature at 45 ° C, fully Stirring for 1.5h, a kind of ultra-fine sericite throug...

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Abstract

The invention discloses a preparation method of sericite nano micro-sheets.The preparation method includes the following steps that S1, material selection is performed: required sericite ore raw materials are selected, high-quality ore raw materials are manually picked out and are coarsely broken, and then sericite reprocessing is performed through wet-process stripping and grading processes so as to obtain sericite graded at the first time; S2, dispersion is performed: sericite slurry is fed into a high-temperature drying oven for sericite drying, then the dried sericite is put into an ultrasonic dispersion machine, the mesh number of the sericite is increased through ultrasonic dispersion, and the dispersed sericite is put into a stirring machine.The thin-sheet-layer, complete-crystal-structure and high-quality sericite nano micro-sheets are finally obtained by combining lithium chloride and the sericite, dispersing the lithium chloride and the sericite through the ultrasonic dispersion machine and the fusing the sericite ultra-refined through a wet process and the lithium chloride.

Description

technical field [0001] The invention relates to the technical field of sericite powder, in particular to a preparation method of sericite nano-chips. Background technique [0002] Sericite is a kind of mica, which belongs to silicate minerals with a layered structure. Sericite has a wide range of uses, such as rubber, plastics, coatings, paints, ceramics, thermal insulation, cosmetics, pigments, In papermaking, metallurgy and other industries, the appearance of sericite is translucent, rich in texture and silky luster. It has a unique high-diameter-thickness ratio structure and excellent ultraviolet shielding performance, especially the fine scale-like thin-layer structure has soft and smooth characteristics. . my country's sericite ore reserves are large and widely distributed, but few are worthy of development and utilization. According to the origin of the deposit, sericite deposits can be divided into: schist type (Chuzhou, Anhui), porphyry alteration type (Jingdezhen,...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/04C09C3/06
CPCC01P2002/20C09C1/405C09C3/003C09C3/006
Inventor 万斌关洪勇金瑞
Owner ANHUI HENGHAO SCI & TECH
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