Abstract
Spray dust technology is one of the main methods of the coal mine dust prevention, comprehensive dust spray technology are summarized, the principle of the spray nozzle, water quality, spray dust system automation affect efficiency: common pressure type nozzle when the nozzle pressure and aperture around 8 MPa and 1.5 mm respectively when the dust efficiency is higher, magnetized water and the addition of wetting agents to further improve the efficiency of dust, spray dust system automation and intelligent development promoted the improvement of the downhole working conditions and improve work efficiency, and through the comparison of different nozzle type, compare the advantages and disadvantages, puts forward the future development direction of the nozzle.
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