PNEUMATIC COLUMN-TYPE FLOTATION MACHINE Russian patent published in 2000 - IPC

FIELD: concentration of minerals; processing minerals containing non-ferrous, ferrous, rare-earth and noble metals, as well as non-metallic minerals. SUBSTANCE: flotation machine includes housing, loading device mounted in its bottom portion, air-lift pump and mechanism for separation of tailings. This mechanism is made in form of reservoir with butterfly valve and branch pipe for fine discharge of tailings and branch pipe for control of the machine filling procedure which is directed inside housing. Provision is made for telescopic motion of this branch pipe inside upper portion of housing. Ratio of diameter of unloading device in bottom portion of machine housing to diameter of branch pipe for fine discharge of tailings is equal to 3: 1. EFFECT: enhanced stability and selectivity of flotation process. 3 cl, 1 dwg