Tooth formation and tooth pick formation

A tooth formation for use in a mineral processing machine, comprising:

• a pick formation comprising an elongate body comprising a shaft having first and second axial ends, wherein one of the first and second axial ends comprises a mineral breaking pick head extending radially beyond the elongate body to define a rearwardly facing first seating surface;
• and
• a support formation defining a receiving aperture having a shape and size complementary to the shaft and capable of receiving the shaft, and a forwardly facing second seating surface configured to abut the first seating surface of the pick formation in an assembled state,
• wherein the first and second seating surfaces comprise arrangements of one or more complementary projections and recesses radially symmetrically disposed about an axial direction of the elongate body.

A mineral processing machine including at least one tooth formation, wherein the tooth formation comprises:

• a pick formation comprising an elongate body comprising a shaft having first and second axial ends, wherein one of the first and second axial ends comprises a mineral breaking pick head extending radially beyond the elongate body to define a rearwardly facing first seating surface;
• and
• a support formation defining a receiving aperture having a shape and size complementary to the shaft and capable of receiving the shaft, and a forwardly facing second seating surface configured to abut the first seating surface of the pick formation in an assembled state,
• wherein the first and second seating surfaces comprise arrangements of one or more complementary projections and recesses radially symmetrically disposed about an axial direction of the elongate body.

A drum assembly for a mineral sizer or breaker, wherein the drum assembly comprises a plurality of toothed annuli mounted on a drive shaft, and wherein each annulus comprises a plurality of tooth formations, where each tooth formation comprises:

• a pick formation comprising an elongate body comprising a shaft having first and second axial ends, wherein one of the first and second axial ends comprises a mineral breaking pick head extending radially beyond the elongate body to define a rearwardly facing first seating surface;
• and
• a support formation defining a receiving aperture having a shape and size complementary to the shaft and capable of receiving the shaft, and a forwardly facing second seating surface configured to abut the first seating surface of the pick formation in an assembled state,
• wherein the first and second seating surfaces comprise arrangements of one or more complementary projections and recesses radially symmetrically disposed about an axial direction of the elongate body.