Improving ball mill control with modern tools based on digital signal processing (DSP) technology

It is a universal goal to improve mill productivity, product quality, energy consumption and decrease production costs. However, the achievement of this objective is not simple in practice due to process time delays, fluctuations in grind-ability of the materials, and variations in the process dynamics by external nonmeasurable factors. This is further complicated due to the lack of a reliable direct measurement of the actual mill level load. This paper specifically addresses this direct measurement issue.