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

Table 6

Atomization characteristic parameter table of nozzles under 8 MPa pressure.

No.	(μm)	(μm)	(μm)	(μm)	(μm)
1	19.621	41.353	72.306	34.982	44.372
2	19.672	40.022	65.718	34.770	41.933
3	33.075	63.474	105.248	55.575	71.094
4	35.159	62.507	97.962	54.554	63.796
5	22.597	45.320	75.432	38.846	47.944
6	18.804	39.043	62.833	34.393	41.644
7	20.586	40.581	64.996	35.781	42.892
8	18.342	38.541	62.321	33.951	41.162