SF type flotation machine integrates the characteristics of the existing flotation machine in China, and is a kind of energy saving and efficient self aspirated flotation machine. The machine has the features of horizontal configuration, self-sucking air, self-priming slurry, self-return of middling foam etc, the ancillary equipment is not needed. Compare with type A flotation machine, energy consumption of single-capacity type is saved by15% ~ 25%, the use cycle the wearing parts is double extended. It is suitable for non-ferrous, black and non-metallic mineral separation.