An Experimental Study on Wetting of Coal Dust by Surfactant Solution

Table 3

Surface tension of four surfactant solutions at different mass concentrations.

No.	cm1 (%)	Surface tension (mN/m)
		SDS	SDBS	Tween-80	OP-10
1	0	73.0	71.3	73.0	72.0
2	0.00005	59.5	58.0	62.6	54.8
3	0.0005	51.5	42.8	47.4	43.8
4	0.005	35.9	28.8	43.5	32.6
5	0.05	31.3	28.4	40.8	31.9
6	0.5	30.4	28.0	39.7	32.5