Table 1: Particle size distribution, heating value, bulk density, surface area for coke and lignite.

Fuel Volume based particle distribution – Q3 Heating value
in kJ/kg (wf)		 Bulk density
in kg/m3
10% 50% 90%
in µm
Coke 13.8 79.3 239.9 29.8 525
Lignite 13.1 67.9 232.1 25.4 461
German DIN Standard 66165-2 51900 51705

wf: water free