The Effect of Static Blasting Materials on Coal Structure Changes and Methane Adsorption Characteristics

Table 2

Density and proximate analysis of coal sample.

Parameters
Proximate analysis
Total moisture (Mt %)	2.7
External moisture (Mf %)	1.0
Inherent moisture (Minh %)	1.7
Ash content (Ad %)	15.12
Volatility ( %)	31.03
Total sulphur (St,d %)	0.42
Calorific value (Qnet,ar MJ/kg)	26.98
Density
True relative density (g/cm^3)	1.46
Apparent relative density (g/cm^3)	1.43