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Spontaneous combustion preventing composition, use thereof, preparation method for spontaneous combustion preventing composition and method for inhibiting coal and coal gangue from spontaneous combustion

A composition and anti-spontaneous combustion technology, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as difficulty in eliminating re-ignition and high cost

Active Publication Date: 2016-03-23
BEIJING JINYUANYI ECOLOGICAL ENVIRONMENT IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the treatment measures for the spontaneous combustion of coal gangue hills are fire extinguishing by water injection, alkaline grouting liquid fire extinguishing, or covering and rolling with inert materials, but the above methods are not only costly, but also difficult to rule out the possibility of recombustion

Method used

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Examples

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Effect test

preparation example Construction

[0028] The present invention also provides a preparation method of the above-mentioned anti-spontaneous combustion composition, which may include: mixing polyvinyl acetate, emulsifier, bisphenol A and silicone defoamer with water in sequence, and heating after 5-30 minutes of heat preservation React for 40-80 minutes, wherein, the temperature of heat preservation and temperature rise can be changed in a wide range. In order to obtain a stable and uniformly dispersed emulsion, preferably, the temperature of heat preservation can be 25-30 ° C, and the temperature of temperature rise reaction can be 80 -90°C. The preparation of the anti-spontaneous combustion composition of the present invention by adopting the temperature and time range of the above-mentioned heat preservation and temperature rise reaction can fully mix the components and improve the stability of the composition.

[0029] Wherein, in order to further uniformly mix the above-mentioned anti-spontaneous combustion ...

Embodiment 1

[0043] This example is used to illustrate the anti-spontaneous combustion composition of the present invention and its preparation method.

[0044] Mix 100 parts by weight of polyvinyl acetate, 1.5 parts by weight of sodium lauryl sulfate, 0.1 parts by weight of bisphenol A and 2 parts by weight of silicone defoamer with 50 parts by weight of water in sequence, keep it warm at 25°C for 30 minutes, and heat up React at 80°C for 80 minutes to obtain the anti-spontaneous combustion composition of this example.

Embodiment 2

[0046] This example is used to illustrate the anti-spontaneous combustion composition of the present invention and its preparation method.

[0047] Mix 100 parts by weight of polyvinyl acetate, 30 parts by weight of polyvinyl alcohol, 3 parts by weight of bisphenol A and 0.3 parts by weight of silicone defoamer with 200 parts by weight of water in sequence, keep warm at 30°C for 5 minutes, and heat up to 90°C React for 40 minutes to obtain the anti-spontaneous combustion composition of this embodiment.

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Abstract

The invention discloses a spontaneous combustion preventing composition, use of the composition, a preparation method for the composition and a method for inhibiting coal and coal gangue from spontaneous combustion. The spontaneous combustion preventing composition disclosed by the invention contains the ingredients in parts by weight: 100 parts of polyvinyl acetate, 0.1-3 parts of bisphenol A, 1.5-30 parts of emulsifier, 0.3-2 parts of organosilicon defoamer and 50-200 parts of water. The spontaneous combustion preventing composition disclosed by the invention can be used for forming a layer of protective film on the surface of each coal and coal gangue granule, so that rainwater erosion is prevented, the process that water is evaporated from the coal and the coal gangue and surface ash content is increased is retarded, the circulation of air inside deposits is blocked, and the risk of spontaneous combustion of the coal or coal gangue is reduced.

Description

technical field [0001] The invention relates to the field of mine pollution restoration, in particular to an anti-spontaneous combustion composition and preparation method as well as its use and method in inhibiting spontaneous combustion of coal and coal gangue. Background technique [0002] In the process of mining, stacking, storage and transportation of high calorific value coal, coal spontaneous combustion is often caused by improper construction methods. At the same time, as a by-product of coal mining and processing, coal gangue is more prone to spontaneous combustion during stacking. [0003] Coal gangue is the waste rock discharged during coal mining and processing, mainly including coal gangue discharged from tunneling, coal gangue discharged from coal preparation and stripped coal gangue produced by open-pit coal mining. Under normal circumstances, the comprehensive discharge of coal gangue accounts for 15% to 20% of the raw coal output. According to statistics, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D131/04C09D7/12C09D5/18C09D5/08
Inventor 王夕刚
Owner BEIJING JINYUANYI ECOLOGICAL ENVIRONMENT IND CO LTD
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