Dust Concentration Changing Regularities and Dust Reduction Technology by Spray Negative Pressure in Fully Mechanized Mining Face

Table 4

Atomization characteristic parameter table of nozzles under 4 MPa pressure.

No.	(μm)	(μm)	(μm)	(μm)	(μm)
1	23.658	53.669	90.793	43.633	56.344
2	24.066	50.636	82.936	42.703	52.668
3	42.843	77.647	124.600	66.840	80.353
4	51.627	86.723	135.630	72.746	89.276
5	25.109	54.049	87.664	44.546	55.444
6	22.426	49.404	81.704	41.471	51.436
7	24.645	51.669	83.909	43.986	53.651
8	21.902	48.869	81.159	40.957	50.942