Ball Mills - an overview | ScienceDirect Topics
The minimal magnitude of the ball size is calculated in millimeters from the equation: d b . min = 10 d b . max σ 2 0.128 E ρ b D 3 where d b.max is the maximum size of the feed (mm), σ is the compression strength (MPa), E is the modulus of elasticity (MPa), ρ b is the density of material of balls (kg/m 3 ), and D is the inner diameter of ...