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A kind of phosphogypsum-based self-generated gas expansion slurry anti-fire extinguishing material and preparation method thereof

A phosphogypsum, anti-fire technology, applied in the direction of fire prevention equipment, etc., can solve the problems of increasing environmental risks, pollution, etc., and achieve the effect of reducing pollution and improving utilization rate

Active Publication Date: 2021-03-19
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphogypsum contains impurities such as free phosphoric acid and fluoride, and a large amount of accumulation will cause pollution and seriously increase environmental risks.

Method used

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  • A kind of phosphogypsum-based self-generated gas expansion slurry anti-fire extinguishing material and preparation method thereof
  • A kind of phosphogypsum-based self-generated gas expansion slurry anti-fire extinguishing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A phosphogypsum-based self-generated gas expansion slurry fire-fighting material, which consists of the following components and parts by weight: 55 parts of phosphogypsum with a pH value of 2 to 3, 30 parts of water, 9 parts of ordinary portland cement, polystyrene 0.18 part of oxyethylene alkylamine, 0.9 part of hydroxyethyl cellulose, 0.22 part of acrylic acid, 0.39 part of sodium methacrylate, 0.01 part of ammonium persulfate, 4.0 part of sodium bicarbonate, and 0.3 part of microsilica.

[0021] The preparation method of above-mentioned anti-fire extinguishing material, concrete steps are:

[0022] (1) The pH value of the phosphogypsum produced by the wet process phosphoric acid is detected, and the phosphogypsum with a pH value of 2 to 3 is selected, and the selected phosphogypsum is initially screened to remove solid impurities; after the screening is completed, the phosphogypsum is placed in the electric heating In the blast drying oven, set the temperature at 10...

Embodiment 2

[0027] A phosphogypsum-based self-generated gas expansion slurry fire-resistant material, which consists of the following components and parts by weight: 58 parts of phosphogypsum with a pH value of 2 to 3, 28 parts of water, 8 parts of cement, polyoxyethylene alkyl 0.12 parts of amine, 0.8 parts of hydroxyethyl cellulose, 0.22 parts of acrylic acid, 0.39 parts of sodium methacrylate, 0.01 part of ammonium persulfate, 3.7 parts of sodium bicarbonate, and 0.3 parts of microsilica.

[0028] The preparation method of the above-mentioned anti-fire extinguishing material is exactly the same as the preparation method of Example 1, so as to obtain the expansion slurry anti-fire extinguishing material B. The ratio of phosphogypsum to water in the fire prevention material B is about 1:0.49, and the expansion ratio is about 3.4.

Embodiment 3

[0030] A phosphogypsum-based self-generated gas expansion slurry fire-fighting material, which consists of the following components and parts by weight: 60 parts of phosphogypsum with a pH value of 2 to 3, 25 parts of water, 8 parts of ordinary Portland cement, polystyrene 0.07 parts of oxyethylene alkylamine, 0.7 parts of hydroxyethyl cellulose, 0.22 parts of acrylic acid, 0.39 parts of sodium methacrylate, 0.01 part of ammonium persulfate, 3.4 parts of sodium bicarbonate, and 0.3 parts of silica fume.

[0031] The preparation method of the above-mentioned anti-fire extinguishing material is exactly the same as the preparation method of Example 1, so as to obtain the expansion slurry anti-fire extinguishing material C. The ratio of phosphogypsum:water in the fire prevention material C is about 1:0.42, and the expansion ratio is about 3.1.

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Abstract

The invention discloses a phosphogypsum-based self-gas-generating expansion slurry fire-preventing and fire-extinguishing material and a preparation method thereof. The slurry material is composed ofthe following raw materials: 55 to 60 parts of phosphogypsum, 25 to 30 parts of water, 8 to 9 parts of cement, 0.07 to 0.18 part of polyoxyethylene alkylamine, 0.7 to 0.9 part of hydroxyethyl cellulose, 0.22 part of acrylic acid, 0.39 part of sodium methallyl sulfonate, 0.01 part of ammonium persulfate, 3.4 to 4.0 parts of sodium bicarbonate and 0.3 part of silica fume. The preparation method comprises the following steps: adding polyoxyethylene alkylamine and acrylic acid into water, and carrying out stirring to form a mixed solution; then adding cement, hydroxyethyl cellulose, ammonium persulfate, sodium methallyl sulfonate, silica fume and sodium bicarbonate into the phosphogypsum, and carrying out stirring to form mixed powder; and finally, adding the mixed powder into the mixed solution, and carrying out stirring to prepare expansion slurry. The phosphogypsum used in the material is industrial waste residues, so resource reutilization is achieved; the prepared slurry is good in liquidity and high in compressive strength; and carbon dioxide generated through a reaction enables the slurry to expand, so fire preventing and extinguishing effects are achieved.

Description

technical field [0001] The invention relates to a phosphogypsum-based self-generated gas expansion slurry anti-fire extinguishing material and a preparation method thereof, belonging to the field of fire-proof material preparation. Background technique [0002] Spontaneous combustion of coal is the main form of mine fire, and fissures provide conditions for spontaneous combustion as oxygen supply channels. In view of the complex situation where cracks intersect with each other, the use of fire-proof materials is one of the effective measures to prevent coal spontaneous combustion. Fissures are usually blocked by pumping medium. Among the existing fire extinguishing materials, the ammonium salt gel material has a high viscosity and cannot be sprayed to a far area; the polymer gel material has a high cost and poor permeability, which leads to poor plugging effect; the other The conveying foam medium for sealing cracks, such as three-phase foam, can form three-dimensional com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/06
CPCA62D1/06
Inventor 鲁义房秀政吴芳华晏志宏谷旺鑫
Owner HUNAN UNIV OF SCI & TECH
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