Research Article

Study on the Atomization and Dust-Reduction Performance of a New Type of External Pneumatic Vortex Fog Curtain Dust Removal Device in Fully Mechanized Excavation Face

Table 2

Total dust sampling concentration.

ConditionProject
Measurement pointDwell time (min)Flow (L·min−1)Filter weight (mg)Filter weight gain (mg)Net weight (mg)Total dust concentration (mg·m−3)

Condition 11433.9
Condition 12306.8
Condition 2 (1)122089.890.30.512.5
Condition 2 (1)222088.989.20.37.5
Condition 2 (2)122085.485.90.512.5
Condition 2 (2)222087.3880.717.5
Condition 2 (3)122090.190.50.410
Condition 2 (3)222082.383.61.332.5