Comminuting apparatus with tangentially directed discharge

A comminuting apparatus for use in an impact pulverizer having a circumferential grinding chamber which includes a plurality of circumferentially spaced beaters having a rotation path therein, a material inlet end, a material discharge end, and a support frame, said apparatus comprising

• a series of bars circumferentially angled about the periphery of the grinding chamber, each bar being generally parallel to a tangent of the rotation path of the beaters defined at each bar, the bars in the series of bars being coupled together in a generally parallel overlapping relationship so that a material discharge gap is formed between adjacent bars in the series to create flow paths, each flow path being generally parallel to each respective tangent of the rotation path of the beaters defined at each flow path.

A comminuting apparatus for use in an impact pulverizer having a circumferential grinding chamber which includes means for beating brittle materials so that the materials are converted from a small size to a reduced fineness, a material inlet end, a material discharge end, and a support frame, said apparatus comprising

• means for retaining the brittle material in the interior grinding chamber until it is pulverized to the reduced fineness, said retaining means being mounted on the support frame and comprising a series of bars circumferentially angled about the periphery of the grinding chamber, each bar being generally parallel to each respective tangent of the beating means defined at each bar, each bar having surface means for pulverizing the brittle material to the reduced fineness and for deflecting the brittle material into engagement with the beating means, and the bars being coupled together to create a material flow path between adjacent bars in the series so that the reduced fine materials are released from the retaining means into the material discharge end.

A comminuting apparatus for use in an impact pulverizer comprising

• a cover defining a grinding chamber,
• a support frame connected to the cover and defining a discharge space, and
• a series of spaced-apart bars 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 defining a material discharge gap and the series of bars defining a series of spaced-apart material discharge gaps between the bars, each gap defining 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 extending in a direction generally parallel to a tangent to the cylindrical path defined at the inner side of each respective flow path.

A comminuting apparatus for use in an impact pulverizer comprising

• a cover defining a grinding chamber,
• a support frame connected to the cover and defining a material discharge space, and
• a screen defining a series of flow paths spaced apart about a generally cylindrical path for directing material therethrough, each flow path having an inner side in fluid communication with the grinding chamber and an outer side in fluid communication with the discharge space, and each flow path extending in a direction generally parallel to a tangent to the cylindrical path defined at the inner side of each respective flow path.