Dipl.-Ing. Th. Fahrland, Dr.-Ing. K.-H. Zysk, Loesche ...
terial present in the ball mill cement, which in turn reflects the greater number of impacts and the inherent inefficiency of ball mill grinding. In more general terms, a typical particle size distribution for a ball mill system in closed-circuit operation with a high- efficiency, third-generation classifier would be between 0.75 and 0.98.
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