Coal dust suppressant

Abstract

The invention relates to a coal dust suppressant which comprises a film-forming component, a wetting component, a coagulating component, carboxymethyl starch, chitosan, lauroamide propyl betaine, an auxiliary component and water for preparation, totally 100 parts by weight; the film-forming component is obtained by mixing lactic acid ring opening epoxy resin modified waterborne polyurethane and guar gum in a weight ratio of 0.15: 1; the wetting component is prepared by mixing TMDD, sodium dodecyl benzene sulfonate and a wetting agent ST-83 in a weight ratio of 0.02: 1: 0.06; the coagulating component is prepared by mixing anionic polyacrylamide, polyaluminum chloride and hydroxypropyl methyl cellulose in a weight ratio of 0.1: 0.4: 1; and the auxiliary component is prepared by mixing sodium silicoaluminate and sodium carbonate in a weight ratio of 1: 2.5. The sprayed dust suppressant can quickly form a high-strength film on the surface of the coal, is good in moisturizing property and can be fully degraded.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a coal dust suppressant. Background technique [0002] Coal is an important energy resource in our country, and the mined coal is transported to all parts of the country for production and living. During the transportation of coal, it is easy to be blown up by the wind. The dust not only pollutes the air and endangers human health, but also causes the loss of coal and causes economic losses to enterprises. At present, in view of the above problems, it is mainly solved by spraying dust suppressant on the surface of coal before transportation. The dust suppressant forms a shell on the surface of coal to avoid dust. Dust suppressants on the market are of a great variety and have different components, all of which have the following different defects. For example: the binding force between coal dust and molecules is weak, and during transportation, the water evaporates quick...

AI Technical Summary

Problems solved by technology

For example: the binding force between coal dust and molecules is weak, and during transportation, the water evaporates quickly after being exposed to wind and sun, which weakens the dust suppression effect; the viscosity of the dust suppression agent is too high, and the spraying speed is slow and easy The spraying device is blocked, the viscosity is too small, and a dense protective film cannot be formed on the surface of the coal, and the film strength is low; in addition, the film-forming time of the dust suppressant is long, which affects the use efficiency, and the degradation performance of the dust suppressant is low, which is easy to cause secondary Pollution