Simulation of particle flows and breakage in crushers using DEM: Part 1 – Compression crushers


Discrete Element Method (DEM) simulation using a breakage model is applied to study a broad range of existing compression based crushers to better understand machine level operation and to demonstrate that such modelling is now possible. Predictions for five types of crushers: jaw crusher, cone crusher, gyratory crusher, impact crusher and double roll crusher are presented. The breakage method used is based on facture of particles using geometric rules for progeny generation and estimates of the force applied to the particles as they flow through the crusher. From these simulations, estimates of power, product size, throughput rate and crusher wear are made.