Extinguishing material for coal mine, and production method thereof

A kind of fire extinguishing material and coal mine technology, applied in fire prevention equipment, etc., can solve the problems of not being suitable for large area filling, polluting underground air, endangering workers' health, etc., and achieves the effects of less water vapor generation, convenient material extraction, and great adhesion

Active Publication Date: 2013-07-17
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But existing colloid fire prevention technology also exposes many problems in practical application, for example: ammonia gas is released in the colloid formation process, pollutes underground air, endangers worker's health; After colloid is formed, it is easy to delaminate, and the uniformity is poor; The cost of gel is relatively high. High, not suitable for large area filling, etc.

Method used

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  • Extinguishing material for coal mine, and production method thereof
  • Extinguishing material for coal mine, and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Place 3 parts of acrylic acid in an ice bath, neutralize with sodium hydroxide to obtain PH=6, then add 4 parts of acrylamide to form a monomer, and sequentially add persulfuric acid that accounts for 0.25% of the total monomer mass Potassium, N,N-methylenebisacrylamide accounting for 0.25% of the total monomer mass; raise the temperature of the water bath and react at 70°C for 7h, after the reaction product is cooled, filter out the reaction product and put it in a vacuum oven, in Dry to constant weight at 50°C to obtain salt-resistant superabsorbent resin;

[0026] 2) Weigh 4g of salt-resistant super absorbent resin and mix with 40ml of tap water, fully stir for about 10min and stand by;

[0027] 3) Weigh 10g of attapulgite and mix with 46ml of tap water, fully stir for 10-50min, and carry out the next reaction after the aggregate slurry is uniform;

[0028] 4) The two slurries obtained in step 2) and step 3) are fully mixed and stirred to obtain the result.

[0...

Embodiment 2

[0031] 1) Place 3 parts of acrylic acid in an ice bath, neutralize with sodium hydroxide to obtain PH=6, then add 4 parts of acrylamide to form a monomer, and sequentially add persulfuric acid that accounts for 0.25% of the total monomer mass Potassium, N,N-methylenebisacrylamide accounting for 0.25% of the total monomer mass; raise the temperature of the water bath and react at 70°C for 7h, after the reaction product is cooled, filter out the reaction product and put it in a vacuum oven, in Dry to constant weight at 50°C to obtain salt-resistant superabsorbent resin;

[0032] 2) Weigh 2g of salt-resistant super absorbent resin and mix with 30ml of tap water, and fully stir for about 10min for use;

[0033] 3) Weigh 15g of attapulgite and mix with 53ml of tap water, fully stir for 10-50min, and proceed to the next step after the aggregate slurry is uniform;

[0034] 4) The two kinds of slurries obtained in step 2) and step 3) are fully mixed and uniformly stirred to obtain th...

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Abstract

The invention relates to extinguishing material for coal mine and a production method thereof and belongs to the field of coal mine materials for fire preventing and extinguishing. The extinguishing material is made by mixing well 5-15wt% of attapulgite, 1-5wt% of salt-resistant super-absorbent polymer and water. Preparation of the salt-resistant super-absorbent polymer includes: adding 3 parts of acrylic acid into an ice bath, neutralizing with sodium hydroxide, adding 4 parts of acrylamide to from a monomer, and sequentially adding potassium peroxodisulfate accounting for 0.25% of the total weight of the monomer and N, N-methylene bisacrylamide accounting for 0.25% of the total weight of the monomer; heating a water bath to 70 DEG C, allowing for reaction for 7h, and filtering and drying the cooled reaction product. Aggregate using the attapulgite as colloid is fine in suspendability and large in specific area, the obtained colloid is remarkably uniform and long in shelf life.

Description

technical field [0001] The invention belongs to the field of coal mine fire extinguishing materials, in particular to a coal mine fire extinguishing material and a preparation method thereof. technical background [0002] my country's coal mines have complex conditions and harsh environments. Every year, various accidents will cause huge economic and property losses to the country. Among them, spontaneous combustion of coal is a common phenomenon. In my country, the mines with spontaneous combustion have a wide range and a large number, which seriously threatens the personal safety of mines and miners. Coal spontaneous combustion is a natural phenomenon that exists objectively. Under natural conditions, the air enters the coal body with the coal body cracks, and the coal oxygen spontaneously recombines to release a large amount of heat. The heat is accumulated under certain heat storage conditions. When it can meet the needs of the development of the coal spontaneous combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 索红莉陈立佳王鼎元田辉张腾郭艾东
Owner BEIJING UNIV OF TECH
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