### Dimensionality in ball mill dynamics

1991 5 1 1 Overload in overflow ball mills is due to the approach to a critical axial flow velocity for pulp of 0.072 m/s. 2 While so far important only with 5.0 and 5.5 m diameter mills it should be found with smaller mills in combinations of very high circulating loads excessive L/D ratios very soft ores or coarse grinds. 3. A proper balancing of lower Lf and higher F values can reduce

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