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Coal dust suppressant and use method thereof

A dust suppressant, coal technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of insufficient crust strength, hardness and toughness, etc., achieve rich sources, prevent shell fragmentation, strengthen Effect of wind resistance index and rain resistance performance

Active Publication Date: 2019-04-12
山西晋煤科技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to solve the technical problems that the current coal dust suppressant has insufficient encrustation strength after spraying, cannot achieve sufficient hardness and toughness in a short time, and has certain corrosiveness to carriages and rails, and provides a coal dust suppressant. Dust suppressants and how to use them

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The coal dust suppressant in the present embodiment is made up of the raw material of following percentage by weight: the complex 80% of dimethyl ethyl urea and polyvinyl alcohol, 2% of coumarin, dodecyl dimethyl benzyl bromide ammonium chloride 1% and polystyrene emulsion 17%.

[0020] Among them, the complex of dimethyl ethyl urea and polyvinyl alcohol is used as the main film former; the role of coumarin is to ensure that the shell formed by the dust suppressant is relatively hard and elastic to prevent fragmentation; Benzyl benzyl ammonium bromide is used as a bactericidal penetrating rust inhibitor; polystyrene emulsion is used as a rainproof agent.

[0021] Wherein, the concentration of the polystyrene emulsion is 25-40%.

[0022] Wherein, the preparation method of the complex of dimethyl ethyl urea and polyvinyl alcohol is: mixing and stirring dimethyl ethyl urea and polyvinyl alcohol at a weight ratio of 1:9 at a temperature of 10-40°C 5-30min.

[0023] The u...

Embodiment 2

[0029] The coal dust suppressant in the present embodiment is made up of the raw material of following percentage by weight: the complex 50% of dimethyl ethyl urea and polyvinyl alcohol, 20% of coumarin gum, dodecyl dimethyl benzyl bromide ammonium chloride 12% and polystyrene emulsion 18%.

[0030] Among them, the complex of dimethyl ethyl urea and polyvinyl alcohol is used as the main film former; the role of coumarin is to ensure that the shell formed by the dust suppressant is relatively hard and elastic to prevent fragmentation; Benzyl benzyl ammonium bromide is used as a bactericidal penetrating rust inhibitor; polystyrene emulsion is used as a rainproof agent.

[0031] Wherein, the concentration of the polystyrene emulsion is 25-40%.

[0032] Wherein, the preparation method of the complex of dimethyl ethyl urea and polyvinyl alcohol is: mixing and stirring dimethyl ethyl urea and polyvinyl alcohol at a weight ratio of 1:9 at a temperature of 10-40°C 5-30min.

[0033]...

Embodiment 3

[0039] The coal dust suppressant in the present embodiment is made up of the raw material of following percentage by weight: the complex 70% of dimethyl ethyl urea and polyvinyl alcohol, coumarin 11%, dodecyl dimethyl benzyl bromide Ammonium chloride 6.5% and polystyrene emulsion 12.5%.

[0040] Among them, the complex of dimethyl ethyl urea and polyvinyl alcohol is used as the main film former; the role of coumarin is to ensure that the shell formed by the dust suppressant is relatively hard and elastic to prevent fragmentation; Benzyl benzyl ammonium bromide is used as a bactericidal penetrating rust inhibitor; polystyrene emulsion is used as a rainproof agent.

[0041] Wherein, the concentration of the polystyrene emulsion is 25-40%.

[0042] Wherein, the preparation method of the complex of dimethyl ethyl urea and polyvinyl alcohol is: mixing and stirring dimethyl ethyl urea and polyvinyl alcohol at a weight ratio of 1:9 at a temperature of 10-40°C 5-30min.

[0043] The...

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Abstract

Belonging to the coal transportation field, the invention provides a coal dust suppressant and a use method thereof to solve the problems of insufficient crusting strength after spray coating, lack ofenough hardness and toughness in a short time and certain corrosiveness to carriages and rails in existing coal dust suppressants. The coal dust suppressant is composed of the following raw materialsby weight percentage: 50-80% of a dimethyl ethyl urea and polyvinyl alcohol complex, 2-20% of fenugreek gum, 1-12% of dodecyl dimethyl benzyl ammonium bromide, and 5-20% of a polystyrene emulsion. The coal dust suppressant provided by the invention has high crusting strength after spray coating, also can reach enough hardness and toughness in a short time, and is convenient for construction. Theused raw materials and the produced product belong to green and environment-friendly products, have little corrosion to carriage steel, plastic pipes, carriages, paint and the like and are easily decomposable. The coal dust suppressant has the advantages of environmental protection, safety, no toxicity or odor, abundant sources, low price, further increase of crusting strength on carriage coal dumps at the end of spraying, etc.

Description

technical field [0001] The invention relates to the technical field of coal transportation, in particular to a coal dust suppressant and its application method. Background technique [0002] During railway transportation, due to train bumps and wind force, fine particles such as dust on the coal surface will be scattered on the road or raised, which will cause the following four hazards. One is the pollution of the environment: the main pollution comes from the two sides of the transport railway line because the fine dust on the train will be scattered to the ground when there is wind or bumps, and there will be secondary dust when the locomotive passes by, causing further damage to the environment. Pollution. The second is harmful equipment: the coal dust scattered on the rails will cause damage to the track bed of the line, which will intensify the degree of compaction. If the coal dust accumulates to a certain thickness, it will bury the installation parts on the rails, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 孟志刚姜效军于永生李伟施国学
Owner 山西晋煤科技术有限公司