Abstract: A comminuting apparatus is provided for use in an impact pulverizer. The comminuting apparatus includes a cover defining a grinding chamber and a support frame connected to the cover and defining a discharge space. A series of spaced-apart bars is circumferentially angled about a generally cylindrical path positioned between the grinding chamber and the discharge space. Each pair of bars in the series of bars defines a material discharge gap and the series of bars defines a series of spaced-apart material discharge gaps between the bars. Each gap defines a flow path having an inner side in fluid communication with the grinding chamber and an outer side in fluid communication with the discharge space. Each flow path extends in a direction generally parallel to a tangent to the cylindrical path defined at the inner side of each respective flow path.