UNIT FOR AERATING LIQUIDS Russian patent published in 1994 - IPC

FIELD: aerating fluids. SUBSTANCE: unit has atomizer 1 and nipples 2, 3 mounted for introducing pressurized liquid and compressed air. Lattice bushings 4 are positioned in atomizer 1 in a spaced relation to each other and have sleeves 7 with radial holes 8 uniformly distributed along their perimeters. Two flat lattices 9 are also positioned in bushings 4. Lattices have openings 10 and rest on inner shoulder 11 of sleeve 7 so as to form spaces 12. The latter are connected to nipple 3 for introducing compressed air. The connection is achieved through radial holes 8, annual grooves 13 and longitudinal slots 14 which are arranged on the inner surface of atomizer 1. Openings 10 have funnel-shaped nozzles 18 at their both sides. Water and foaming agent are forced through openings 10 after leaving nipple 2. The water jets are carried through spaces 12 filled with compressed air so that air ejection is achieved. Acoustic vibrations are excited to promote mixing water with air and dispersing the latter so that a corresponding mixture is formed, the mixture being discharged to the tank holding pulp under aeration. Then the mixture is passed through openings 10 of lattice bushing 4 positioned as the last in the direction of the mixture flow. EFFECT: enhanced efficiency of dispersing air in liquid and flotation pulp, improvement of flotation. 3 cl, 3 dwg