Industrial application and results of two-stage grinding

Two-stage grinding is a natural technological development to maximize the use of roller press technology while guaranteeing a product quality consistent with that of conventional ball mills. In addition, two-stage grinding offers the optimum method to increase the capacity of existing ball mills. Capacity increases between 100 and 200% can be realized as is demonstrated in this paper. Specific power consumption for the overall milling system is also significantly reduced. This paper outlines the industrial experience and results of several two-stage grinding systems to allow for a conclusive report on this type of grinding technology