SF type flotation machine is self suction, suction of mechanical agitation flotation machine, mainly used in non-ferrous metals, ferrous metals and non-metallic mineral sorting. Flotation machine with suction and flotation of the dual role, the new impeller with backward-style two-blade, and with the increase of volume of the tank design guide pipe and false bottom device, reasonable structure, reliable operation, superior performance in other, suction capacity of flotation machine. The flotation machine commonly used types are 4m3, 8m3, 10m3 and 16m3