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Mining spraying material for blocking air leakage and preparation device of mining spraying material

A technology for plugging air and mining, which is applied to clay preparation devices, unloading devices, and raw material supply devices for sales, etc., can solve the problems of lack of performance plugging air materials, high cost of foam resin, and lack of strength for three-phase foam. Achieve stable and fast adhesive performance, excellent foam compression performance, and excellent bubble performance.

Inactive Publication Date: 2017-07-07
LONGYAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have some shortcomings. The yellow mud grouting technology needs to consume a large amount of soil, and some areas lacking soil can not be used and the grout is easy to seep downward and cannot seal the cracks; the ammonium salt gel releases toxic and harmful gases, and the colloid is easy to crack; The cost of polymer gel is high, and the plugging effect disappears after the water evaporates; the three-phase foam has no strength, and the stability time is only 8 to 12 hours, and it has not been cured. Once the foam bursts, it will not have the plugging effect; foam resin High cost and high requirements on ambient temperature, it can be burned under high temperature conditions; the sealing effect of expansion cement is poor, and it cannot seal small cracks
[0003] Therefore in the prior art there is no excellent and stable special plugging air material

Method used

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  • Mining spraying material for blocking air leakage and preparation device of mining spraying material
  • Mining spraying material for blocking air leakage and preparation device of mining spraying material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The materials are prepared according to the following weight composition: 100 parts of water, 25 parts of fly ash with a particle size range of 0.5 to 300 μm, 6 parts of gypsum, 20 parts of 42.5R cement, 12 parts of slaked lime, 0.5 parts of fatty alcohol polyoxyethylene ether, hydroxyl 0.8 parts of ethyl methyl cellulose, 2 parts of sodium lauryl sulfate, 1 part of fatty alcohol polyoxyethylene ether sodium sulfate, 2.5 parts of polyphosphoric acid, 1.8 parts of hydroxypropyl starch ether with a viscosity of 600-800 mPas, acetic acid 1.2 parts of redispersible latex powder of ethylene-ethylene copolymer type.

[0021] The preparation steps are:

[0022] 1): Add 80 parts of water and all of the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methyl cellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator will evenly form a fly ash slurry. Rotation speed 1000 rpm;

[0023] 2): Add 15 parts of water and all the polyphosphoric acid, hydroxyp...

Embodiment 2

[0027] Prepare materials according to the following weight composition: 100 parts of water, 15 parts of fly ash with a particle size ranging from 0.5 to 300 μm, 6 parts of gypsum, 25 parts of 42.5R cement, 10 parts of slaked lime, 0.8 parts of fatty alcohol polyoxyethylene ether, hydroxyl 0.5 parts of ethyl methyl cellulose, 1.2 parts of sodium lauryl sulfate, 1 part of fatty alcohol polyoxyethylene ether sodium sulfate, 2.5 parts of polyphosphoric acid, 1.6 parts of hydroxypropyl starch ether with a viscosity of 600-800 mPas, acetic acid 1 part of redispersible latex powder of ethylene-ethylene copolymer type.

[0028] The preparation steps are:

[0029] 1): Add 80 parts of water and all of the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methyl cellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator will evenly form a fly ash slurry. Rotation speed 1000 rpm;

[0030] 2): Add 15 parts of water and all the polyphosphoric acid, hydroxypropyl ...

Embodiment 3

[0034] The materials are prepared according to the following weight composition: 100 parts of water, 20 parts of fly ash with a particle size of 0.5 to 300 μm, 8 parts of gypsum, 25 parts of 42.5R cement, 10 parts of slaked lime, 0.8 parts of fatty alcohol polyoxyethylene ether, hydroxyl 0.7 parts of ethyl methyl cellulose, 1.5 parts of sodium lauryl sulfate, 1 part of fatty alcohol polyoxyethylene ether sodium sulfate, 2 parts of polyphosphoric acid, 1.6 parts of hydroxypropyl starch ether with a viscosity of 600 to 800 mPas, acetic acid 1.2 parts of redispersible latex powder of ethylene-ethylene copolymer type.

[0035] The preparation steps are:

[0036] 1): Add 82 parts of water and all the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methyl cellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator will evenly form a fly ash slurry. Rotation speed 1000 rpm;

[0037] 2): Add 12 parts of water and all the polyphosphoric acid, hydroxypropyl ...

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Abstract

The invention relates to mining materials and aims at providing a mining spraying material for blocking air leakage. According to the technical scheme, the material contains the following components in parts by weight: 100 parts of water, 13-25 parts of coal ash, 6-8 parts of gypsum, 20-26 parts of cement, 8-12 parts of slaked lime, 0.5-0.8 parts of fatty alcohol-polyoxyethylene ether, 0.4-0.8 parts of hydroxyethyl methylcellulose, 1-2 parts of lauryl sodium sulfate, 1-1.2 parts of fatty alcohol-polyoxyethylene ether sodium sulfate, 1.8-2.5 parts of polyphosphoric acid, 1.6-2 parts of hydroxypropyl starch ether with a viscosity of 600mPas-800mPas and 0.8-1.2 parts of vinyl acetate-vinyl copolymer type redispersible powder. The technical process of the material is simple, and the bubbling performance of the material is excellent; by utilizing a compound bubbling agent, the cost is lowered, the bubbling time is high, and the material has good high temperature resistance and heat-insulating property. The mining spraying material has wide use values in blockage of earth surface fractures in coal mines and sealed fire areas of the coal fields.

Description

Technical field [0001] The invention relates to a spraying wind blocking material for mines and a preparation device. Background technique [0002] Coal spontaneous combustion is one of the main natural disasters in my country's coal mines, causing significant economic losses and seriously threatening the safety of coal mine personnel. The spontaneous combustion of coal in the mine is mainly caused by underground air leakage. Therefore, in order to effectively prevent the spontaneous combustion of coal in mines, it is critical to block down the air leakage points, reduce or eliminate oxygen supply, and prevent coal-oxygen recombination. The spontaneous combustion of coal in mine mining mainly occurs in goaf areas with air leakage channels, open cuts, stop mining lines, geological structural belts, and roadway high-collapse areas. In order to effectively plug the air leakage in coal mines, grouting, gel, foam resin, three-phase foam, expanded cement, etc. are often used in Chin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14B28C5/16B28C5/46B28C7/06B28C7/16
CPCB28C5/16B28C5/464B28C7/06B28C7/16C04B28/14C04B2111/00663C04B2111/00724C04B2201/50C04B18/08C04B7/00C04B22/064C04B24/32C04B24/383C04B24/16C04B24/166C04B22/165C04B24/38C04B24/2623
Inventor 郭玉森仲涛刘淑金刘谦袁广民杨馥源刘铮杨志平曾斌徐树生
Owner LONGYAN UNIV
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