US7070134B1 Centrifugal grinding mills Google PatentsIt is a feature of this type of centrifugal grinding mill that the regions surrounding and below the grinding chamber 4 are permeated by slurry discharging from the grinding chamber 4 The slurry discharges with high velocity impacting on and rebounding as a dispersion of slurry particles from the internal surface of the frame member 7 creating a zone of intensely turbulent high velocity