Dust suppressant, preparation method thereof, and dustproof method in opencast coal mining and coal transportation

A dust suppressant and dust-proof technology, applied in the field of dust suppressant, dust-proof and preparation in open-pit coal mining and coal transportation, can solve the problems of aggravating capital consumption, unable to effectively ensure dust-suppression efficiency, and increasing workload, etc.

Pending Publication Date: 2020-10-20
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Coagulation-type dust suppressants composed of inorganic salts have the problems of serious pollution and affecting later greening, and adhesive-type dust suppressants composed of ordinary water-absorbing resins have problems such as poor wettability and poor coverage, and this type of dust suppressant is Disposable products, if the covering effect is not good or the shell layer is broken, it needs to be re-sprayed with dust suppressant, which not only cannot effectively guarantee the dust suppression efficiency, but also increases the workload and aggravates the consumption of funds.

Method used

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  • Dust suppressant, preparation method thereof, and dustproof method in opencast coal mining and coal transportation
  • Dust suppressant, preparation method thereof, and dustproof method in opencast coal mining and coal transportation
  • Dust suppressant, preparation method thereof, and dustproof method in opencast coal mining and coal transportation

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preparation example Construction

[0036] Such as figure 1 Shown, the preparation method of dust suppressant provided by the invention may further comprise the steps:

[0037] S101: After dissolving the cellulose in water, add sodium lauryl sulfate and stearyl acrylate, set the temperature of the constant temperature stirrer at 50°C and stir for 2 hours to completely dissolve the stearyl acrylate. Add an initiator to the above solution and react at 50°C for 2 hours;

[0038] S102: adding acrylamide and a crosslinking agent to the solution to continue the reaction for 1 hour to obtain a final product;

[0039] S103: Add antifreeze to the final product, stir well, and adjust the pH value to obtain a highly efficient self-healing coal dust inhibitor.

[0040] In an embodiment of the present invention, the mass ratio of inhibitor to water is 1:80.

[0041] In an embodiment of the present invention, the reaction process of step S101 is:

[0042]

[0043] In an embodiment of the present invention, the reaction...

Embodiment 1

[0049] The embodiment of the present invention weighs 4g of hydroxyethyl cellulose and dissolves it in 200ml of water, extracts 4ml of stearyl acrylate and 2ml of sodium lauryl sulfate into the water with a rubber dropper, and waits until the stearyl acrylate is completely After dissolving and emulsifying, 0.5 g of sodium peroxide was added to the solution, and the reaction was stirred at a constant temperature of 50° C. for 2 hours. Add 2 g of acrylamide and 0.5 g of N-N sodium borate to the solution, keep stirring at 60° C. for 3 hours. After the reaction was completed, 0.3g of calcium chloride was added to the solution to adjust the pH and test related properties.

Embodiment 2

[0051] The embodiment of the present invention weighs 4g of hydroxyethyl cellulose and dissolves it in 200ml of water, extracts 6ml of stearyl acrylate and 2ml of sodium lauryl sulfate into the water with a rubber dropper, and waits until the stearyl acrylate is completely After dissolving and emulsifying, 0.5 g of sodium peroxide was added to the solution, and the reaction was stirred at a constant temperature of 50° C. for 2 hours. Add 2 g of acrylamide and 0.5 g of sodium borate to the solution, and keep stirring at 60° C. for 3 hours. After the reaction was completed, 0.3g of calcium chloride was added to the solution to adjust the pH and test related properties.

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PUM

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Abstract

The invention belongs to the technical field of dust suppressants for dust prevention in open pit coal mining, coal transportation and stockpiling processes, and discloses a preparation method of a dust suppressant, and a dust prevention method in opencast coal mining and coal transportation. 100% of the dust suppressant is prepared from, by mass, 2-5% of cellulose, 1-3% of sodium lauryl sulfate,2-4% of octadecyl acrylate, 10-15% of acrylamide, 0.05-0.1% of an initiator, 0.02-0.04% of a cross-linking agent, 0.3-0.6% of an anti-freezing agent, and the balance of water. An inhibitor not only can further improve the wettability of the dust suppressant to coal dust, so that water wets and bonds the coal dust to the greatest extent, and greatly reduces the diffusion degree of the dust, but also can play a self-healing role to complete the wrapping and covering of the dust by adding a certain amount of water after the dust bonding layer is broken, thereby improving the dust suppression efficiency and ensuring the long-term dust suppression.

Description

technical field [0001] The invention belongs to the technical field of dust suppressant for dust prevention in open-pit coal mining, coal transportation and storage, and in particular relates to a dust suppressant, a preparation method, and a dust-proof method in open-pit coal mining and coal transportation. Background technique [0002] At present, with the advancement of science and technology, the output of coal is getting higher and higher, the frequency of coal mining, transportation and stockpiling in the open pit is greatly increased, and the dust generated by the coal industry is also increasing. Coal dust is one of the main disaster sources that seriously threaten the health of surrounding personnel and the environment. The hazards of coal dust mainly include the following aspects: First, affected by wind disturbance, a large amount of respirable dust is filled in the air, which seriously threatens the health of workers. The probability of suffering from pneumoconio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22E21F5/08
CPCC09K3/22E21F5/08
Inventor 周刚李帅龙姜文静王存民刘冬刘宗奇牛琛茜张欣远薛轶方孙健王钰颖孟群智
Owner SHANDONG UNIV OF SCI & TECH
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