Effect Of Particle Size Distribution On Grinding Kinetics In Dry And Wet Ball Milling Operations

It is now well known that the size distribution of the particulate solid has a significant effect on the breakage behavior of particles in the wet as well as dry modes of ball milling operation. In the context of the size discretized batch grinding kinetic model, grinding behavior of particles is characterized by the breakage rate parameters, k, and breakage distribution parameters, B. Understanding the nature of variation of these two sets of parameters with particle size distribution is important for simulation and control of operation of production mills. However, so far it has not been possible to track the variation of both the set of parameters with grinding time simultaneously. In this paper an attempt has been made in this direction by using a modified functional form approach with time dependent constants. Keywords: dry and wet ball milling, breakage rate and distribution parameters, effect of particle size distribution