Study of lifter profile and speed of SAG mills effect on impact forces, moment and tumbling by using 3D DEM

Semi-autogenous grinding mills (SAG mills) are a very important part of today’s mining operations bytransform masses of ores to usable-size particles.Grinding mills are usually lined with lifters to increasetheir efficiency. During the course of operation, thelifters are worn away. Thiswill affect the energy efficiency and capacity of mills and the behavior of theload in the mill and finally leads to replace the wornlifters. The overall goal of this work is to investigate theultimate effect of the various design parameters such asliner inclination angle, height of lifter, mill speed whicheffect on the motion of steel balls trajectory and theirimpact process. In the present work by using DEM theeffects of mentioned parameters on SAG mill behaviorhave been demonstrated and the results havebeen showed good agreement with Sarcheshmeh copper complex’s SAG mills operations.

کلیدواژه ها:

Lifter ، Grinding ، Modeling ، DEM