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

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...

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.

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