Impeller is composed of the dosed double section cones and it can produce strong slurry cycle downward;

The capacity of air suction is large, and the power consumption is low;

Every tank has three functions of air suction, slurry suction and flotation simultaneously with automatic flotation return circuit; The circuit change is convenient for horizontal position without any supplementary equipment;

The slurry cycle is rational, and the settlement of coarse sand can be reduced largely.

It is convenient to adjust slurry level with auto electro-controlling devices.