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Mining water base foam preventing coal spontaneous combustion and manufacturing method thereof

A coal spontaneous combustion, water-based technology, used in mining equipment, dust prevention, earthwork drilling and other directions, can solve the problem that the performance of water-based foam cannot meet the performance requirements of foam materials, the foaming ratio of water-based foam is low, and the stabilization time is short, etc. problem, to achieve the effect of convenient production, high foaming ratio and long stability time

Inactive Publication Date: 2014-08-06
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-based foam prepared by the existing technology has a low expansion ratio, short stabilization time, and high liquid drainage rate, which leads to the performance of the water-based foam not meeting the performance requirements of the foam material.

Method used

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  • Mining water base foam preventing coal spontaneous combustion and manufacturing method thereof

Examples

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Comparison scheme
Effect test

preparation example Construction

[0024] like figure 1 Shown, the preparation method of the water-based foam of a kind of mine prevention and control coal spontaneous combustion of the present invention, comprises the following steps:

[0025] (1) Add 10-20 parts of sodium lauryl sulfate and 0.5-4 parts of bovine hoof horn hydrolyzate to 70-80 parts of water, and stir to form a surfactant dilution;

[0026] (2) Add 1-2 parts of hydroxypropyl methylcellulose, 2-4 parts of dodecanol, 1-2 parts of cationic guar gum, 0.1-0.5 parts of Polystyrene-acrylic latex particles, 0.5-2 parts of sodium chloride, and stirring to form a premixed foam;

[0027] (3) By stuffing steel balls, metal screens or glass microspheres in the cavity of the foamer, and from the raw material inlet to the water-based foam outlet, the porosity of the filling medium increases step by step to form the required porous foam 3, and then through the air compressor 1, pass compressed air with a pressure of 100-200kPa into the porous foamer 3, and ...

Embodiment 1

[0029] A kind of water-based foam for preventing and controlling coal spontaneous combustion for mining, the water-based foam is prepared according to the following steps in parts by weight:

[0030] (1) Add a foaming agent consisting of 10 parts of sodium lauryl sulfate and 4 parts of cow's hoof horn hydrolyzate to 80 parts of water, and fully stir to form a surfactant dilution;

[0031] (2) Add 1.5 parts of hydroxypropyl methylcellulose, 2 parts of dodecyl alcohol, 1 part of cationic guar gum, and 0.5 parts of polystyrene-acrylic latex particles to the dilution of step (1). (particle size of 10 μm) and 0.5 parts of sodium chloride as a stabilizer, and stirred to form a premixed foam;

[0032] (3) By stuffing steel balls in the cavity of the foamer, and from the raw material inlet to the outlet of the water-based foam, the porosity of the filling medium increases step by step to make the required porous foamer 3, the porous foamer The compressed air inlet of 3 and the premix...

Embodiment 2

[0034] A kind of water-based foam for preventing and controlling coal spontaneous combustion for mining, the water-based foam is prepared according to the following steps in parts by weight:

[0035] (1) Add a foaming agent consisting of 12 parts of sodium lauryl sulfate and 3 parts of cow's hoof horn hydrolyzate to 78 parts of water, and fully stir to form a surfactant dilution;

[0036] (2) Add 2 parts of hydroxypropyl methylcellulose, 2.5 parts of dodecanol, 1 part of cationic guar gum, and 0.3 parts of polystyrene-acrylic latex particles to the dilution of step (1). (particle size of 10 μm) and 1.2 parts of sodium chloride as a stabilizer, and stirred to form a premixed foam;

[0037](3) By stuffing steel balls in the cavity of the foamer, and from the raw material inlet to the outlet of the water-based foam, the porosity of the filling medium increases step by step to make the required porous foamer 3, the porous foamer The compressed air inlet of 3 and the premixed foam...

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Abstract

The invention discloses mining water base foam preventing coal spontaneous combustion. The mining water base foam comprises, by weight, 10-20 parts of lauryl sodium sulfate, 0.5-4 parts of cattle hoof and horn hydrolysate, one to two parts of hydroxypropyl methyl cellulose, two to four parts of dodecanol, one to two parts of cationic guar gum, 0.1-0.5 part of polystyrene-acrylic based emulsion particles, 0.5-2 parts of sodium chloride and 700-1500 parts of water. A manufacturing method of the water base foam comprises the steps that foaming agents are diluted by the water, stable adjusting agents are added to the foaming agents to form premixed foam liquid, compressed air with the pressure intensity of 100 kPa to 200 kPa is guided to a foam maker, after stable air flow exists on an outlet of the foam maker, the diluted premixed foam liquid is injected into the foam maker, the compressed air and the premixed foam liquid generate turbulent vortex in the foam maker, and the turbulent vortex is enhanced constantly to form the water base foam. The water base foam is high in foaming time, long in stable time and low in liquid drainage rate, the performance needs of foam materials are fully met, and meanwhile the water base foam can independently carry out oxygen isolation and cooling on a high-temperature fire source point.

Description

technical field [0001] The invention relates to a water-based foam and a preparation method thereof, in particular to a mine-used water-based foam for preventing and controlling coal spontaneous combustion and a preparation method thereof, belonging to the technical field of coal mine fire prevention and extinguishing. Background technique [0002] Coal spontaneous combustion is one of the main disasters faced by coal mine safety production. Coal spontaneous combustion not only brings significant economic losses to the country, but also seriously threatens the safety of coal mine personnel. At present, the spontaneous combustion of coal in mines is mainly caused by underground air leakage. Therefore, sealing the underground air leakage points to reduce or eliminate oxygen supply and prevent coal-oxygen recombination is the key to preventing coal spontaneous combustion. Foam materials have become a new direction of coal spontaneous combustion prevention materials in mines du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/06
Inventor 秦波涛李方磊鲁义贾玉威史全林
Owner CHINA UNIV OF MINING & TECH
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