Application areas: roughing and sweeping operations in large and medium-sized flotation plants Applicable materials: non-ferrous metals, ferrous metals and non-metallic minerals Equipment advantages: 1. Small impeller diameter, low speed, shallow installation depth and low power consumption; 2. There is a large gap between the impeller and the stator (Fig. 5-5-14). The wear of the ore particles on the two is reduced. The stator is a cylinder with an elliptical hole, which can mix and disperse the air and the pulp, so Also known as a diffuser; 3. The height of the stator is lower than that of the impeller, and the impeller is exposed for a section under the stator, which is conducive to the stirring and circulation of the pulp; 4. The umbrella-shaped dispersing cover with holes of the stator is used as a stabilizer, which can separate the eddy current generated by the impeller from the foam layer, so that the pulp surface can be kept stable and is conducive to the implementation of automatic control; 5. The inhalation volume is large, and the inflation volume can be adjusted within the range of 0.1~1㎥/㎡·min; 6. There is a false bottom above the bottom of the tank, and the pulp can flow between the two and circulate through the guide pipe, so the pulp can be circulated in a fixed route in the lower part (Figure 5-2-14, also It can reduce the depth of the impeller immersed in the pulp, and increase the air volume, so that the foam can be fully dispersed; 7. The degree of stirring is moderate, the solid particles are well suspended, do not sink in the tank, and do not need to draw ore when parking. Working principle: When the impeller rotates, a vortex is generated in the vertical cylinder and the draft tube, which forms a negative pressure, sucks the air from the intake pipe, and mixes with the slurry sucked in through the draft tube in the impeller and stator area. The slurry-gas mixed flow is formed by the impeller to form a tangential motion, and then converted into a radial motion by the action of the stator, and is evenly distributed in the flotation cell. The mineralized foam rises to the foam layer, and the foam product is scraped off from one side or both sides.