#### Determination of lifter design, speed and filling effects in AG mills ...

In the present work, Particle Flow Code 3D (PFC3D) has been used to model the effects of lifter height (525 cm) and mill speed (5090% of critical) on the power draw and frequency distribution of specific energy (J/kg) of normal impacts in a 5 m diameter autogenous grinding (AG) mill, with a mill charge volume varying between 7% and 20%.