AUTOMATIC FROTH FLOTATION CONCENTRATION PROCESS CONTROL DEVICE Russian patent published in 1994 - IPC

FIELD: froth flotation concentration. SUBSTANCE: device has flow rate meter 2, density meter 11 for determining density of pulp in flotation machine chamber, foamer doser 6 and collector doser 3, regulators 5 and 1 for supplying foamer into tank 7 of recycled water and of collector into conditioner 4, respectively, density meter 8 for determining density of aerated recycled water with foamer, measuring chamber 9, and unit 10 for estimating variations of density of aerated pulp under the action of collector in flotation machine chamber. Output of density meter 11 is connected with first input of unit 10, output of density meter 8 is connected with second input of unit 10 and with first and second inputs of regulator 5 for supplying foamer into recycled water tank 7, which is connected with measuring chamber 9 and flotation machine chamber through pipeline. Output of flow rate meter 2 and first input of regulator 1 for supplying collector are connected with third input of unit 10, whose output is connected with second input of regulator 1. Output of regulator 1 is connected with flow rate meter 3 of collector, which is supplied to conditioner 4. EFFECT: increased efficiency and simplified construction. 2 cl, 1 dwg