BALL SPIRAL MILL Russian patent published in 2015 - IPC B02C17/00 

FIELD: machine building.

SUBSTANCE: mill comprises grinding bodies, loading and unloading ports, a hollow drum with spiral guides on the inner surface. A coil-like tube is mounted on the outer drum surface. Cylindrical chambers are connected to the mill ends on two sides. One chamber is communicated with the loading device. The other chamber is communicated with the unloading device and is fitted by blades and ports to unload the ready product. Ports are provided in the drum in the unloading zone.

EFFECT: high efficiency of grinding.

3 dwg