An Improved Control Strategy for Ball Mill Grinding Circuits

An improved control strategy is proposed to control ball mill grinding circuits for energy saving and pollution reduction. A two-layer optimization architecture combined by particle size optimization layer and energy optimization layer is developed, where the optimal particle size set-point is calculated first, followed by the energy optimization step. A control method adaptive to the wear of liner in ball mills is also proposed. Simulation studies demonstrate that the fresh ore feed rate has been increased and the energy efficiency has been increased.