DYNAMICS OF PLANETARY BALL-MILLING - A COMPARISON OF COMPUTER-SIMULATED PROCESSING PARAMETERS WITH CUO NI DISPLACEMENT REACTION MILLING KINETICS/

A two dimensional, discrete element method computer program has been c onstructed to predict grinding media motion in a planetary ball mill. Various impact models have been assessed for suitability to simulate a ctual milling impacts. They include Kelvin and Maxwell viscoelastic mo dels and an elastic/plastic yield model. The computer simulation has t hen been used to consider variations in processing parameters such as impact frequency and energy associated with different milling configur ations. These results have then been compared to the kinetics of the C uO/Ni displacement reaction propagated under these conditions.