PNEUMATIC FLOATATION MACHINE Russian patent published in 2002 - IPC

FIELD: concentration of minerals by floatation. SUBSTANCE: pneumatic floatation machine includes vertical cylindrical chamber above which pulp loading unit is located; loading unit is provided with air supply branch pipe; foam collector secured on cylindrical chamber has diameter exceeding diameter of cylindrical chamber; it is also provided with concentrate unloading branch pipe and chamber product unloading unit with outlet hole. Aerator is made in form of cylinder rigidly secured in lower portion of vertical chamber; it is provided with taper central hole with narrowing portion directed towards bottom of floatation machine at taper angle of 40-50 deg. Ratio of diameter of cylinder to its height is 2:1. EFFECT: optimization of hydraulic and aerodynamic modes. 2 dwg, 1 tbl