A New Approach to the Grinding Kinetics of Magnetite Ore Based on the Population Balance Model

A new approach to batch grinding kinetics was established based on the conventional population balance model, with magnetite as experimental object. The distribution function commonly used in model is a sum of two power functions, i.e., Bi1=φ(xi−1x1+1−φ(xi−1x1)β. Based finding that cumulative mass fraction coarser than size class discharge consistent first-order kinetic, gi only single function, =+k1xia, which will greatly reduce parameter error and make fit more accurate. maximum between simulation calculations actual experiment using methods did not exceed 1%, indicating both models can accurately predict fracture characteristics magnetite. Because has fewer derived parameters, it addresses model’s problems large computational effort poor fitting accuracy, making applicable study impact parameters status, simpler process higher accuracy. In addition, this method minerals other Further research required verify its applicability wide ranges continuous grinding.