A Novel Semiautogenous Mill Liner Wear Kinetics Model

摘要

Liner condition is the main factor that influences the availability of the industrial semi-autogenous (SAG) mill. Therefore having a mathematical model that can determine the liner conditions is very important. In this study, a method was proposed and tested to make a mathematical model for determination of SAG mill liner wear. It was found that a first order kinetics model could well be used to describe the loss of liner thickness over time (R{sup}2 = 0.955). The model is an exponential formula that is based on the wear rate constant (k) and operating time. To determine the rate constant and also to examine the validity of the first order kinetics model, the normalized liner thickness versus operating time was drawn in a log-normal graph. This model could calculate the liner thickness at any given time.