Slurry covering flame-retardant slurry for fire extinguishing of gangue dump and application thereof

A gangue dump and slurry technology, which is applied in the field of flame retardant slurry coating, can solve the problems of large environmental impact, large engineering volume, large pores of gangue dump, etc., and achieve the effect of good cooling effect, low preparation cost and fast cooling

Inactive Publication Date: 2021-10-29
国家能源集团煤焦化有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the disadvantages of covering soil are: large amount of engineering, great environmental impact, and it is difficult to ensure the compactness of covering soil, and the effect of fire extinguishing and cooling is not significant
Water is the most widely and economical method at present to extinguish fires and cool down gangue hills. However, gangue hills have large pores and are not easy to store water. Simply using water or ordinary slurry to extinguish fires and cool down will cause solid-liquid phase segregation in the slurry of gangue hills, and water will flow along the dominant channel. The phenomenon of running away, or the water vaporizes immediately after reaching the high-temperature area, that is, the fire area, cannot achieve the effect of rapid fire extinguishing and cooling

Method used

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  • Slurry covering flame-retardant slurry for fire extinguishing of gangue dump and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment is used in the application of a plasma flame retardant slurry for a mesiushan fire extinguishing, including the following steps:

[0055] (1) According to the mass, 60 parts of the fly ash, 20 desulfurization gypsum, 25 pieces of lime powder, 20 melamine residue, melamine formaldehyde resin modified polyphosphate 10 parts and 160 parts of water, stir evenly Squirting barrier. The measuring fluid degree was measured using cement rubber sand.

[0056] (2) Pour the slurry into a mortar triple test die of 70.7 × 70.7 × 70.7, together with the test mold on the temperature (20 ± 2) ° C, relative humidity ≥ 50%, 48h, after 48 hours, the test block is placed In the temperature (20 ± 1) ° C, the relative humidity is not less than 90% of the maintenance case, the pressure resistance intensity of the test block is 4.2 MPa, and the softening coefficient of the softening coefficient of 0.91 is 0.91.

Embodiment 2

[0058] This embodiment is used in the application of a plasma flame retardant slurry for a mesiushan fire extinguishing, including the following steps:

[0059] (1) According to mass, 70 copied coal ash, 25 desulfurized gypsum, 30 pieces of lime powder, 25 parts of melamine residue, 20 parts of polycanoamide modified by melamine formaldehyde resin, 3 parts of polyacrylamide, carboxamide Methylcellulose 5 parts, 2 parts of expandable graphite, 5 parts of polyethylene glycol 400 and 200 parts of water, and stir evenly gave a plaquaculus. The measuring fluid degree was determined using cement rubber sand.

[0060] (2) Pour the slurry into a mortar triple test die of 70.7 × 70.7 × 70.7, together with the test mold on the temperature (20 ± 2) ° C, relative humidity ≥ 50%, 48h, after 48 hours, the test block is placed In the temperature (20 ± 1) ° C, the relative humidity is not less than 90% of the maintenance case, the compressive strength of the test block is 4.6 MPa, and the softeni...

Embodiment 3

[0062] This embodiment is used in the application of a plasma flame retardant slurry for a mesiushan fire extinguishing, including the following steps:

[0063](1) According to the mass, 80 copied coal ash, 40 desulfurized gypsum, 45 pieces of lime powder, 30 pieces of melamine, melamine formaldehyde resin modified polyphosphate 15 parts, 4 parts of polyacrylamide, carboxarboxy The methylcellulose, 4 parts of expandable graphite, 10 parts of polyethylene glycol 400 and 270 moisture, stirred and uniformly obtained. The measuring fluid degree was determined using cement rubber sand.

[0064] (2) Pour the slurry into a mortar triple test die of 70.7 × 70.7 × 70.7, together with the test mold on the temperature (20 ± 2) ° C, relative humidity ≥ 50%, 48h, after 48 hours, the test block is placed In the temperature (20 ± 1) ° C, the relative humidity is not less than 90% of the maintenance case, the compressive strength of the test block is 4.8 MPa, and the softening coefficient of the ...

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Abstract

The invention provides slurry covering flame-retardant slurry for fire extinguishing of a gangue dump and application thereof. The flame-retardant slurry is prepared from the following raw materials in parts by mass: 60 to 80 parts of fly ash, 20 to 40 parts of desulfurized gypsum, 25 to 45 parts of lime powder, 20 to 30 parts of carbide slag, 10 to 15 parts of a flame retardant and 110 to 270 parts of water. The flame-retardant slurry has a good fire extinguishing effect and can achieve the purpose of rapidly extinguishing fire and cooling a gangue dump, and a cured layer formed after the flame-retardant slurry is cured has good strength and good water resistance.

Description

Technical field [0001] The present invention belongs to the technical field of metallurgical materials, and in particular, a flubbed flame retardant slurry for the fire extinguishing of the meteorite and its application thereof. Background technique [0002] The self -ustrability cause of coal gangue mountain lies in that the heat released during the oxidation in the meteorite is all emitted in the surrounding environment, and the temperature increases will further accelerate the oxidation reaction. After reaching the critical temperature point, the rate of oxidation will be rapidly accelerated. If it is still possible to get sufficient oxygen supply, the meteorite will quickly enter the self-ignition state. The presence of a large amount of coal in the meteorite maintains the bumbler of the gangue, and the temperature gradient formed at the time of coal has accelerates the convection of the air (ie, the chimney effect), allowing the gangue to obtain sufficient to maintain combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00A62C2/04
CPCA62D1/00A62C2/04
Inventor 李绪萍任晓鹏张宽郭亮东付海刚鲁绪强袁治国郭永红刘艳青时磊
Owner 国家能源集团煤焦化有限责任公司
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