EFFECT OF TWOSTAGE STIRRED PULPMIXING ON COAL FLOTATION
flotation reagents were fed into a twostage stirring tank with diameter of m. With valves 1 and 3 closed and valves 2 and 4 opened, coal slime and flotation reagents were fed into a singlestage tank with diameter of m. Impeller speed was changed by adjusting drive motor speed through the inverter.