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Coal mine composite colloid fire prevention and extinguishing material and preparation method thereof

A technology for fire prevention and colloid, applied in fire protection equipment and other directions, can solve the problems of inability to accumulate in high places, easy to block pipes, long gel time, etc., to improve mechanical properties, good water retention and flame retardant properties, and high fluidity. Effect

Active Publication Date: 2022-02-01
河南中煤矿业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the colloidal materials mainly include cement fly ash gel materials and polymer gel materials. Among them, cement fly ash gel materials have been used earlier, and are cheap, non-toxic, and have good permeability. They have been used until now. The disadvantages are: The usage amount is large, the gel time is long, it cannot be piled up at a high place, and the fluidity is poor, it is easy to block the pipeline, and it is easy to crack after the gel layer is formed; the polymer gel material has good fluidity, good fire prevention effect, and the gel layer High strength, but its cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A coal mine composite colloid fire-preventing material is made of the following raw materials in parts by weight: 1 part of sodium carboxymethylcellulose, 2 parts of agar, 12 parts of fly ash, 0.1 part of polyacrylamide, 6 parts of crosslinking agent, 1 part of sodium bicarbonate, 3 parts of flame retardant, 3 parts of foaming agent, 90 parts of water.

[0029] Wherein the crosslinking agent is a metal ion crosslinking agent supported by montmorillonite.

[0030] The cross-linking agent is prepared by the following steps:

[0031] 1) Slowly drop the sodium hydroxide solution into the aluminum chloride solution. After the drop is completed, the temperature is raised rapidly until the solution boils. After 30 minutes, it is cooled to obtain aluminum hydroxy;

[0032] 2) Add montmorillonite to hydroxyaluminum, stir and mix at 70°C for 60-70min, filter under reduced pressure, and dry to obtain the product;

[0033] The molar ratio of sodium hydroxide to aluminum chloride ...

Embodiment 2

[0042] A coal mine composite colloid fire prevention material is made of the following raw materials in parts by weight: 1.2 parts of sodium carboxymethylcellulose, 1.8 parts of agar, 13 parts of fly ash, 0.12 parts of polyacrylamide, 6.5 parts of crosslinking agent, 1.2 parts of sodium bicarbonate, 3.2 parts of flame retardant, 3.5 parts of foaming agent, 90 parts of water.

[0043] Wherein the crosslinking agent is a metal ion crosslinking agent supported by montmorillonite.

[0044] The cross-linking agent is prepared by the following steps:

[0045]1) Slowly drop the sodium hydroxide solution into the aluminum chloride solution. After the drop is completed, the temperature is raised rapidly until the solution boils. After 30 minutes, it is cooled to obtain aluminum hydroxy;

[0046] 2) Add montmorillonite to hydroxyaluminum, stir and mix at 70°C for 60-70min, filter under reduced pressure, and dry to obtain the product;

[0047] The molar ratio of sodium hydroxide to alu...

Embodiment 3

[0052] A coal mine composite colloid fire-preventing material is made of the following raw materials in parts by weight: 1.5 parts of sodium carboxymethylcellulose, 1.5 parts of agar, 14 parts of fly ash, 0.15 parts of polyacrylamide, 7 parts of crosslinking agent, 1.5 parts of sodium bicarbonate, 3.5 parts of flame retardant, 4 parts of blowing agent, 95 parts of water.

[0053] Wherein the crosslinking agent is a metal ion crosslinking agent supported by montmorillonite.

[0054] The cross-linking agent is prepared by the following steps:

[0055] 1) Slowly drop the sodium hydroxide solution into the aluminum chloride solution. After the drop is completed, the temperature is raised rapidly until the solution boils. After 30 minutes, it is cooled to obtain aluminum hydroxy;

[0056] 2) Add montmorillonite to hydroxyaluminum, stir and mix at 75°C for 60-70min, filter under reduced pressure, and dry to obtain the product;

[0057] The molar ratio of sodium hydroxide to alumin...

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PUM

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Abstract

The invention discloses a coal mine composite colloid fire-preventing material, which is made of the following raw materials in parts by weight: 1-2 parts of carboxymethyl cellulose sodium, 1-2 parts of agar, 12-15 parts of fly ash, polyacrylamide 0.1-0.2 parts, 3-5 parts of crosslinking agent, 1-2 parts of sodium bicarbonate, 3-4 parts of flame retardant, 3-5 parts of foaming agent, 90-100 parts of water. The material cost is low, the water retention and flame retardancy are good, and the fire prevention performance is excellent.

Description

technical field [0001] The invention relates to the technical field of fire prevention and extinguishing materials for mines. Background technique [0002] Coal mine fires are likely to cause accidents such as gas and dust explosions, which are extremely harmful. Therefore, fire prevention and control is the focus of coal mine safety production. The main cause of fires in coal mines is coal seam spontaneous combustion, and due to fully mechanized top coal mining and gas drainage technologies used in coal mine mining, air leakage in gobs or a large amount of residual coal are likely to cause coal seam spontaneous combustion. The main means of fire prevention and extinguishing in coal mines at present adopts fire extinguishing materials, which have high safety and remarkable effect. [0003] Commonly used anti-fire extinguishing materials include colloidal materials, mud, foam, and inhibitors, etc. The mechanism of anti-fire extinguishing is: using quantitative addition equip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00A62D1/06A62D1/04
CPCA62D1/0064A62D1/06A62D1/005A62D1/0071
Inventor 郝宇吴立军
Owner 河南中煤矿业科技发展有限公司
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