### Dynamic modelling and simulation of semi-autogenous mills ...

The equation used to predict the power consumed by the mill (power-draw), M p, is based on a modification of Bond's Law (Austin, 1990): (3) M p = K p · D 2.5 · L (1-A · J) W V ϕ c 1-0.1 2 9-10 ϕ c where D (m) and L (m) are the mill dimensions, V (m 3) is the mill effective volume, ϕ c is the mill speed (fraction of critical speed), J is ...