Ultra-fine montmorillonite-based core-shell structure anti-explosion agent and preparation method thereof

A technology of montmorillonite and shell structure, which is used in earth-moving drilling, mining equipment, dust prevention, etc., can solve the problem of poor explosion suppression effect, and achieve the effect of excellent explosion suppression performance, low process energy consumption and good fluidity.

Inactive Publication Date: 2019-12-13
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the unmodified montmorillonite only has a simple physical anti-knock effect, and the anti-knock effect is not superior

Method used

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  • Ultra-fine montmorillonite-based core-shell structure anti-explosion agent and preparation method thereof
  • Ultra-fine montmorillonite-based core-shell structure anti-explosion agent and preparation method thereof
  • Ultra-fine montmorillonite-based core-shell structure anti-explosion agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The raw materials of the superfine montmorillonite-based core-shell structure antiknock agent in this embodiment are: 6 parts of montmorillonite, 3 parts of ammonium dihydrogen phosphate, and 1 part of hydrophobic fumed silica.

[0041] Its preparation method is as follows:

[0042] Step 1: Ball mill the montmorillonite and ammonium dihydrogen phosphate for 15 minutes respectively, the ball-to-material ratio is 2.5:1, and the frequency is 40Hz. After ball milling, put it into a drying oven to dry for 8 hours, and control the temperature to be 80 degrees Celsius.

[0043]Step 2: Dissolve 43.9g of dried ammonium dihydrogen phosphate into 100mL of distilled water; under magnetic stirring, disperse 87.8g of dried montmorillonite into 300mL of absolute ethanol, and then slowly pour saturated phosphoric acid After the addition of ammonium dihydrogen aqueous solution, continue magnetic stirring for 4 hours, then age and precipitate for 4 hours, filter out the precipitate, and...

Embodiment 2

[0049] The raw materials of the superfine montmorillonite-based core-shell structure antiknock agent in this embodiment are: 6 parts of montmorillonite, 3 parts of sodium bicarbonate, and 1 part of hydrophobic fumed silica.

[0050] Its preparation method is as follows:

[0051] Step 1: Ball mill the montmorillonite and sodium bicarbonate for 12 minutes respectively, the ball-to-material ratio is 3:1, and the frequency is 42.5Hz. After ball milling, put it into a drying oven to dry for 8 hours, and control the temperature at 60 degrees Celsius.

[0052] Step 2: Dissolve 22.5g of dried sodium bicarbonate into 200mL of distilled water; under magnetic stirring, disperse 45g of dried montmorillonite into 400mL of absolute ethanol, and then slowly pour saturated sodium bicarbonate After the addition of the aqueous solution, continue magnetic stirring for 4 hours, then age and precipitate for 4 hours, filter out the precipitate, and dry at 30 degrees Celsius for 8 hours to obtain a...

Embodiment 3

[0057] The raw materials of the superfine montmorillonite-based core-shell structure antiknock agent in this embodiment are: 6 parts of montmorillonite, 3 parts of potassium bicarbonate, and 1 part of hydrophobic fumed silica.

[0058] Its preparation method is as follows:

[0059] Step 1: Ball mill the montmorillonite and potassium bicarbonate for 15 minutes respectively, the ball-to-material ratio is 2.5:1, and the frequency is 40Hz. After ball milling, put it into a drying oven to dry for 8 hours, and control the temperature at 40 degrees Celsius.

[0060] Step 2: Dissolve 39.1g of dried potassium bicarbonate into 100mL of distilled water; under magnetic stirring, disperse 78.2g of dried montmorillonite into 250mL of absolute ethanol, and then slowly pour saturated hydrogencarbonate After the addition of the potassium aqueous solution, continue magnetic stirring for 4 hours, then age the precipitate for 4 hours, filter out the precipitate, and dry at 30 degrees Celsius for...

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Abstract

The invention belongs to the field of anti-explosion agents, and relates to an ultra-fine montmorillonite-based core-shell structure anti-explosion agent and a preparation method thereof. The ultra-fine montmorillonite-based core-shell structure anti-explosion agent is prepared from the following components in parts by weight: 3-7 parts of montmorillonite, 1-5 parts of a fire-suppressing agent and1-2 parts of a grinding aid. The ultra-fine montmorillonite-based core-shell structure anti-explosion agent is composite powder of an ultra-fine fire-suppressing agent, the montmorillonite and grinding aid formed by composite powder of the fire-suppressing agent and the montmorillonite and the grinding aid through a ball milling method. The ultra-fine montmorillonite-based core-shell structure anti-explosion agent has the characteristics of being environmentally friendly, delicate, uniform, high in efficiency, good in fluidity and the like, and the preparation method is simple to operate andlow in pollution, and liable to realize industrial production.

Description

technical field [0001] The invention belongs to the field of explosion suppressing agents, and relates to an ultrafine montmorillonite-based core-shell structure explosion suppressing agent and a preparation method thereof. Background technique [0002] In the process of coal mining, due to the complexity of the coal mine environment and the limitation of the function of the existing single anti-explosion agent powder, there is no efficient and widely used powder anti-explosion agent. Functional modification of powder materials can improve its fire extinguishing and explosion suppression performance, and the synergistic effect of various powder compounding can also improve its explosion suppression efficiency. [0003] As a natural mineral, montmorillonite has a loose structure, a large specific surface area, and can absorb a large amount of heat. It is a good choice for explosion suppression powder. According to the research of many scholars in the past, the explosion supp...

Claims

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Application Information

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IPC IPC(8): E21F5/08E21F5/12
CPCE21F5/08E21F5/12
Inventor 郑凯王雪燕余明高韩世新阳旭峰
Owner CHONGQING UNIV
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