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Fly ash-cement foam material for preventing coal spontaneous combustion and preparation method thereof

A foam material and coal spontaneous combustion technology, applied in fire prevention equipment, etc., can solve the problems of environmental damage, high cost, and low sealing strength

Active Publication Date: 2016-09-14
胡相明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of low plugging strength, high cost, and environmental damage of existing coal mine fire prevention materials, a fly ash-cement foam with high strength, good plugging effect, low cost and simple construction is provided Materials and their preparation methods

Method used

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  • Fly ash-cement foam material for preventing coal spontaneous combustion and preparation method thereof
  • Fly ash-cement foam material for preventing coal spontaneous combustion and preparation method thereof
  • Fly ash-cement foam material for preventing coal spontaneous combustion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0008] Example 1: This embodiment is made of the following components: (amount is weight percent) sulfoaluminate superfine cement 20, fly ash 20, carboxymethyl cellulose 0.2-0.3, sodium fluoride 0.1-0.3, 0.1-0.3 of melamine, 0.1-0.3 of aluminum sulfate, 0.3-0.6 of sodium lauryl sulfate, 0.4-0.6 of sodium dodecylbenzenesulfonate, and the rest is water, and the amounts of all components are percentages by weight.

Embodiment 2

[0009] Example 2: This embodiment is made from the following components: (amount is weight percentage) sulfoaluminate superfine cement 15, fly ash 25, carboxymethyl cellulose 0.5, sodium fluoride 0.2-0.3, melamine 0.1 -0.3, aluminum sulfate 0.1-0.3, sodium lauryl sulfate 0.4-0.6, sodium dodecylbenzenesulfonate 0.4-0.6, and the rest is water, and the amounts of all components are weight percentages.

Embodiment 3

[0010] Example 3: This embodiment is made from the following components: (amount is weight percentage) sulfoaluminate superfine cement 25, fly ash 15, carboxymethyl cellulose 0.5, sodium fluoride 0.2-0.3, melamine 0.1 -0.3, aluminum sulfate 0.1-0.3, sodium lauryl sulfate 0.4-0.6, saponin 0.5-0.6, the rest is water, and the amounts of all components are weight percentages.

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Abstract

The invention discloses a pulverized fuel ash-cement foam material for controlling the spontaneous combustion of coal and a preparation method of the pulverized fuel ash-cement foam material. The pulverized fuel ash-cement foam material is prepared from the following components by weight: 10-40 % of sulfoaluminate superfine cement, 10-40 % of pulverized fuel ash, 0.5-0.9 % of carboxymethyl cellulose, 0.1-0.6 % of sodium fluoride, 0.2-0.6 % of melamine, 0.1-0.4 % of aluminum sulfate, 0.3-0.6 % of lauryl sodium sulfate, 0.4-0.6 % of sodium dodecyl benzene sulfonate, 0.5-0.8 % of saponin and the balance of water. The foam material is high in expansion rate of foam, long in stabilizing time, low in rate of water loss, good in plugging performance, and very suitable for extinguishment underground a coal mine. The pulverized fuel ash-cement foam material has the advantages of being low in cost, good in plugging performance, high in strength, simple to construct and the like.

Description

technical field [0001] The invention relates to the field of coal mine fire prevention materials, in particular to a fly ash-cement foam material for preventing coal spontaneous combustion and a preparation method thereof. Background technique [0002] Coal spontaneous combustion is one of the major hidden dangers threatening the safe production of coal mines in my country. Fires caused by coal spontaneous combustion not only cause a large number of casualties and serious economic losses, but also cause large-scale environmental pollution, vegetation destruction, soil desertification and other problems. In order to prevent coal spontaneous combustion, technologies such as grouting, spraying inhibitors, inert gas injection, colloid injection, three-phase foam injection, aerosol inhibitors, equal pressure fire prevention, and solidified foam plugging are widely used at home and abroad. In terms of grouting materials, there are mainly yellow mud and fly ash, in addition to gan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/02
Inventor 胡相明赵艳云程卫民
Owner 胡相明
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