Parameters Sphere (LDPE) Cylinder (Biomass pellets)
Size (mm), Diameter - D, Length - L D = 3.75 D = 6.6, L = 13.2
Particle density (g/cm3) 0.931 1.158
Particle sphericity 0.929 0.832
Minimum fluidization velocity (m/s) 0.782 N/A
Group of Geldart’s classification Class D Class D