Abstract: A distributor plate (10) is shown for use in an impelling rotor of a vertical shaft impactor (14). Typically the impelling rotor is a chamber (12) arranged to rotate about a vertical axis A-A. Feed materials for breakage are gravity-fed into the rotating chamber (12). These materials strike the rotating distributor plate (10) which is located at the base of the rotor chamber (12). The plate has a substantially planar single-piece upper surface (24) onto which the feed materials are received. This substantially flat surface (24) facilitates rapid and easy expulsion of feed materials there across and out of the rotor chamber (12). The plate shown is a circular disc made of metal carbide. Use of a single-piece upper surface of the distributor plate (10) also will not result in the development of preferential wear sites at corners, edges, join lines etc, as can happen with the known distributor plates.

Abstract: A distributor plate (10) is shown for use in an impelling rotor of a vertical shaft impactor (14). Typically the impelling rotor is a chamber (12) arranged to rotate about a vertical axis A-A. Feed materials for breakage are gravity-fed into the rotating chamber (12). These materials strike the rotating distributor plate (10) which is located at the base of the rotor chamber (12). The plate has a substantially planar single-piece upper surface (24) onto which the feed materials are received. This substantially flat surface (24) facilitates rapid and easy expulsion of feed materials there across and out of the rotor chamber (12). The plate shown is a circular disc made of metal carbide. Use of a single-piece upper surface of the distributor plate (10) also will not result in the development of preferential wear sites at corners, edges, join lines etc, as can happen with the known distributor plates.

Abstract: A distributor plate (10) is shown for use in an impelling rotor of a vertical shaft impactor (14). Typically the impelling rotor is a chamber (12) arranged to rotate about a vertical axis A-A. Feed materials for breakage are gravity-fed into the rotating chamber (12). These materials strike the rotating distributor plate (10) which is located at the base of the rotor chamber (12). The plate has a substantially planar single-piece upper surface (24) onto which the feed materials are received. This substantially flat surface (24) facilitates rapid and easy expulsion of feed materials there across and out of the rotor chamber (12). The plate shown is a circular disc made of metal carbide. Use of a single-piece upper surface of the distributor plate (10) also will not result in the development of preferential wear sites at corners, edges, join lines etc, as can happen with the known distributor plates.

Abstract: Prism-shaped anvil blocks (10) are arranged about the inner circumferential wall (12) of a rotating shaft impactor chamber (14). Each anvil block has a planar face 16 oriented to receive material thereonto for breakage. The breakage face (16) of each anvil block (10) is not obscured (that is, shadowed) by an adjacent anvil block (10A), so that the trajectory of travel of material ejected from a rotor (18) is uninterrupted by the shape or position of the adjacent anvil block (10A), to reduce the unevenness of abrasive wear. Each anvil block (10) is retained at the inner circumferential wall (12) by a concealed post (24) which is located on a lateral, inwardly projecting peripheral ledge 26 of the chamber (14). Each post (24) is received in a respective mating cavity (28) formed in each anvil block (10). The ingress of any material into the small gap between the mating cavity (28) and the post (24) is substantially prevented by its concealment, thus avoiding jamming of the anvil.

Abstract: A distributor plate (10) is shown for use in an impelling rotor of a vertical shaft impactor (14). Typically the impelling rotor is a chamber (12) arranged to rotate about a vertical axis A-A. Feed materials for breakage are gravity-fed into the rotating chamber (12). These materials strike the rotating distributor plate (10) which is located at the base of the rotor chamber (12). The plate has a substantially planar single-piece upper surface (24) onto which the feed materials are received. This substantially flat surface (24) facilitates rapid and easy expulsion of feed materials there across and out of the rotor chamber (12). The plate shown is a circular disc made of metal carbide. Use of a single-piece upper surface of the distributor plate (10) also will not result in the development of preferential wear sites at corners, edges, join lines etc, as can happen with the known distributor plates.

Abstract: Prism-shaped anvil blocks (10) are arranged about the inner circumferential wall (12) of a rotating shaft impactor chamber (14). Each anvil block has a planar face 16 oriented to receive material thereonto for breakage. The breakage face (16) of each anvil block (10) is not obscured (that is, shadowed) by an adjacent anvil block (10A), so that the trajectory of travel of material ejected from a rotor (18) is uninterrupted by the shape or position of the adjacent anvil block (10A), to reduce the unevenness of abrasive wear. Each anvil block (10) is retained at the inner circumferential wall (12) by a concealed post (24) which is located on a lateral, inwardly projecting peripheral ledge 26 of the chamber (14). Each post (24) is received in a respective mating cavity (28) formed in each anvil block (10). The ingress of any material into the small gap between the mating cavity (28) and the post (24) is substantially prevented by its concealment, thus avoiding jamming of the anvil.