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

Table 3

Atomization characteristic parameter table of nozzles under 2 MPa pressure.

No.	(μm)	(μm)	(μm)	(μm)	(μm)
1	28.833	65.546	113.142	53.363	68.985
2	25.716	54.966	86.534	45.485	56.285
3	48.874	86.483	132.942	75.410	89.000
4	51.577	93.528	145.390	80.718	96.097
5	33.047	73.819	127.594	58.829	78.308
6	24.844	53.743	85.320	44.235	55.053
7	26.609	55.939	87.507	46.458	57.278
8	23.917	53.212	84.784	43.759	54.539