Explosion Flame and Pressure Characteristics of Nonstick Coal Dust and the Inhibition of Explosion Suppressants

Table 4

Inhibition of an explosion suppressant on the explosion flame of nonstick coal dust.

(%)	lmax (m)
	SiO2	KCl	NH4H2PO4
0	0.59	0.59	0.59
10	0.55	0.53	0.50
20	0.51	0.48	0.42
30	0.47	0.45	0.40
40	0.44	0.42	0.31
50	0.42	0.39	0.24
60	0.38	0.32	0.17
70	0.34	0.28	0

, mass percentage of explosion suppression dust mixed with nonstick coal dust; l_max, maximum flame propagation distance.