Experimental Study for Influence of Surfactants Chemical Microstructures on Wetting Effect about Coal Dust in Tongchuan Mining Area

Figure 8

Contact angles of surfactants on the coal sample dust. (a) FMEE 41.79°. (b) BS-12 48.07°. (c) AEC 43.73°. (d) DDBAC 24.13°.

(a)

(b)

(c)

(d)