Morrell Method for Determining Comminution Circuit Specific Energy and Assessing Energy Utilization Efficiency of Existing Circuits

This guideline is a practical condensation of the works of the Morrell method for predicting the specific energy consumption of conventional crushing, High Pressure Grinding Rolls (HPGRs), and tumbling mill equipment. The guideline reviews the data required for the analysis, including hardness characterization data generated from the SMC Test® (see Annex A), the Bond Ball Mill Test Work Index (WiBM; GMSG, 2016a), and the Morrell equations and their application (see Annex B). A worked example is provided in Annex C.