FLOTATION MACHINE Russian patent published in 2003 - IPC

FIELD: mineral concentration by methods of flotation; applicable in mining, metallurgical and other industries. SUBSTANCE: flotation machine includes compartment, aeration unit having impeller located round blade stator and connected with hollow shaft for air supply, circular trough installed round hollow shaft with circular clearance formed by inner wall of circular trough and external surface of hollow shaft. Area of circular clearance amounts up to, at least, 20% of area of compartment cross-section. Trough outer wall is located at angle of, at least, 10 dwg. Relative to vertical axis. Trough inner wall is vertical. Trough outer wall is higher than its lower wall. EFFECT: higher efficiency of flotation. 2 dwg