Abstract: Hydrocyclone and method for separating and classifying solids in which a slurry is introduced into the cylindrical inlet section of the separation chamber of the hydrocyclone so that the slurry rotates about the axis of the chamber, then passes through a first conically tapered section of the separation chamber, and thereafter through a second conically tapered section which has a smaller cone angle than the first conically tapered section. The finer solids are removed through an overflow outlet toward the upper end of the separation chamber, and the coarser solids are removed through an underflow outlet toward the lower end of the chamber.

Abstract: An improved flotation cell for recovery of minerals from ore using a three phase system flotation process provides improved metallurgical recovery through improved rotor/stator and cell design by establishing good zonal separation within the cell and minimizing froth turbulence, providing uniform aeration in the cell, and accommodating higher aeration volumes before encountering turbulence. Parameters for the rotor/stator pump assembly, a deflector vane forming part of the stator and for pump assembly/cell configuration are disclosed.