ABSTRACT
The paper discusses a model of ore particles crushing with a JK Drop Weight Tester, created using the method of discrete elements in the Rocky DEM software. The mathematical relationship between output parameters of the JK Drop Weight Test (JK DWT) and parameters of the breakage model in Rocky DEM is shown. A JK DWT was performed on a technological sample of copper-nickel ore. The JK DWT results were used in Rocky DEM to calibrate its breakage model by factorial experiment using two parameters that are not related to the results of the JK DWT. The achieved accuracy of the resulting model is ± 3.1% of the t10 value. The resulting model can be used to obtain the particle size distribution of crushing products for various comminution machines, as well as for determination the parameters for calibrating mathematical models of crushers, autogenous and semi-autogenous mills in the JKSimMet.
