Research on Prediction of Ball Filling Rate of Semi-autogenous Mill
In order to grasp the filling rate of the grinding ball in the semi-autogenous mill in real time of the actual grinding production,based on the theory of grinding ball wear kinetics,the calculation formula of the filling rate of the grinding ball in the semi-autogenous mill under the grinding production condition is derived,and the determination method of the grinding ball rate index is given.Using this formula,the filling rate of the grinding ball can be calculated according to the wear resistance of the grinding ball,the effective volume of the semi-autogenous mill,the number and diameter of the steel balls added daily,and the size of the lattice hole of the lattice plate of the mineral ejection.Applying this formula to grinding production,the filling rate of steel balls in the semi-autogenous mill is well predicted,which has important guiding signifi-cance for determining the number of additional steel balls and evaluating the wear resistance of steel balls in the grinding production of semi-autogenous mill.