Method and system for negative pressure-induced dust removal in coal preparation plant

The invention discloses a method and a system for negative pressure-induced dust removal. The method comprises that: an atomization plant capable of generating water fog is arranged in a mine roadway,and a plurality of spraying points are arranged according to a temperature and humidity in the mine; the atomization plant comprises a pump station, an air compressor and a plurality of spraying assemblies; and when the atomization plant is used, the coal dust is wetted in advance, the water fog is atomized twice and then rotatably sprayed, and the wetted coal dust is sucked in a dust removing fan, purified by the dust removing fan and then discharged in a mode of slurry water. Compared with the conventional wet type dust removing method, the device of the invention has the advantages of highdust removal efficiency, less water consumption and reliable performance and can more effectively prevent and remove dust in all environments of the coal preparation plant with few influences on coalquality.