Micro-nano treatment method of fibrous clay

A processing method, micro-nano technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as weakening of secondary agglomeration, and achieve the effects of high product quality, elimination of secondary agglomeration, and low energy consumption

Inactive Publication Date: 2015-10-28
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adjustment of the force field in this patent is based on the pressure change caused by the vaporization of the solvent. Since the solvent and the clay have an optimal ratio relationship, the adjustment range has certain limitations; secondly, although the high-pressure expansion makes the micro-nano clay The second reunion of the has been weakened somewhat, but its impact is still clearly present

Method used

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  • Micro-nano treatment method of fibrous clay
  • Micro-nano treatment method of fibrous clay
  • Micro-nano treatment method of fibrous clay

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Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: process attapulgite clay according to the following steps

[0019] (1) Clay pretreatment: mix attapulgite clay with ammonium bicarbonate, add solvent water, and squeeze the rollers three times; ammonium bicarbonate is 20% of the mass of attapulgite clay, and water is the mass of attapulgite clay 1 times;

[0020] (2) High-pressure expansion: Put the pretreated clay into a pressure-resistant airtight container, seal and heat to 100°C, keep it warm for 30 minutes, and quickly release it to normal pressure;

[0021] (3) Drying: The clay after high-pressure expansion treatment is spread out and dried naturally to obtain micro-nano attapulgite clay powder in a soft agglomerated state.

Embodiment 2

[0022] Embodiment 2: process sepiolite according to the following steps

[0023] (1) Clay pretreatment: fully mix sepiolite and ammonium chloride, then add solvent isopropanol, and squeeze the rollers 4 times; ammonium chloride is 45% of the mass of sepiolite, and isopropanol is the 1.2 times the mass of stone;

[0024] (2) High-pressure expansion: Put the pretreated sepiolite into a pressure-resistant airtight container, seal and heat to 150 °C, keep warm for 20 minutes, and quickly release to normal pressure;

[0025] (3) Drying: The sepiolite after high-pressure expansion treatment is spread out and dried naturally to obtain micro-nano sepiolite powder in a soft agglomerated state.

Embodiment 3

[0026] Embodiment 3: process attapulgite clay according to the following steps

[0027] (1) Clay pretreatment: Attapulgite clay is fully mixed with urea, then mixed with solvent ethanol, and squeezed 5 times on rollers; urea is 70% of the mass of attapulgite clay, and ethanol is 1.5 times the mass of attapulgite clay ;

[0028] (2) High-pressure expansion: Put the pretreated clay into a pressure-resistant airtight container, seal it and heat it to 200 °C, keep it warm for 15 minutes, and quickly release it to normal pressure;

[0029] (3) Drying: The clay after high-pressure expansion treatment is removed from the solvent at low temperature to obtain micro-nano attapulgite clay powder in a soft agglomerated state.

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Abstract

The invention discloses a micro-nanocrystallization treatment method for fiber-type clay. The method comprises the following steps of fully mixing clay with a hydrogen bond breaker, and then doping with a solvent, roll extruding for3-5 times; putting pretreated clay into a pressure-resistant sealed container, sealing and heating to 100-250 DEG C, maintaining the temperature for 5-30 minutes, quickly releasing the pressure to an atmospheric pressure; naturally spreading clay after being subjected to high pressure expansion treatment and airing or removing the solvent at a low temperature to obtain the micro-nanocrystallized clay powder in a soft agglomeratic state, wherein the mass of the hydrogen bond breaker is 20-100% of the mass of clay and the mass of solvent is 1-2 times of the mass of clay. By virtue of the treatment method disclosed by the invention, the force field can be more finely regulated, and secondary agglomeration formed due to the hydrogen bonds is further eliminated, the crystal structure with a high length-diameter ratio of the fiber-type clay mineral is protected, the disaggregation and micro-nanocrystallization of mineral fibers are achieved and the energy consumption is low and no waste gas, waste water, industrial residues can be generated.

Description

technical field [0001] The invention belongs to the technical field of deep processing of natural mineral resources, and in particular relates to a micro-nano processing method of fiber-type clay. Background technique [0002] Patent ZL201110176554.3 "Clay micro-nanoization method based on high-pressure expansion to protect material with high aspect ratio structure" introduces a high-pressure expansion force field with control advantages after fibrous clay ore is pretreated by "fluffing", and initially forms a possible Industrialized clay micro-nano technology. This technology improves the micro-nanoization efficiency of fiber-type clay, greatly reduces energy consumption and improves product quality. Compared with the traditional wet or dry micro-nano technology, it can truly realize energy saving, emission reduction and consumption reduction. However, the adjustment of the force field in this patent is based on the pressure change caused by the vaporization of the solven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40B82Y40/00B82Y30/00
Inventor 王礼君惠剑陈静陈权金叶玲徐婷婷
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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