The flotation machine consists of an impeller (star wheel), a stator, a dispersion cover, a column, a spindle and a bearing. A false bottom and a diversion tube device are provided at the bottom of the flotation machine.

The impeller mechanism is a key component of the flotation machine.

The impeller is star-shaped and has eight radial blades with a blade height of 700 mm and a diameter of φ 700 mm.

The stator has a cylindrical shape with a plurality of elliptical small holes around the cylinder and protruding ribs inside.

The dispersion cover has a truncated cone shape with a taper angle of 90 degrees and a uniform circular aperture on the surface.

There is an air inlet hole in the column, and the air enters the impeller chamber through the column to mix with the slurry.

The guide tube device is in the center of the false bottom, and the adjusting ring is engaged with the lower end of the impeller by 40 mm, and the bottom of the impeller has a circulation hole for circulating the slurry.

The working principle: when the impeller rotates in the stator, the adjacent slurry produces liquid vortex, which forms a negative pressure, and the air is introduced by the suction hole on the vertical cylinder cover. At the same time, the slurry enters the blade from the bottom of the groove through the draft tube. The space between the air and the inhaled air is mixed by the centrifugal force of the impeller. The three-phase mixture leaves the impeller blade and enters the flotation zone through the channel of the cylindrical stator surface and the uniformly distributed small hole on the dispersion cover. The flotation separation process In this area, the slurry is returned to the bottom of the tank for recycling, and the mineralized foam rises to the foam area and is scraped off by the scraper to become a foam product (concentrate or medium mine).

This type of flotation machine has the following characteristics:

(1) It is a self-aspirating mechanical agitating structure, so it can self-suck a sufficient amount of air, and the stirring ability is also relatively strong.

(2) There is a relatively stable separation zone with stable ore surface.

(3) The gap between the impeller and the stator is large (230 mm), and the peripheral speed of the impeller is low (6.6 m/s), which reduces the wear of the impeller and the stator and reduces the power consumption.

The main disadvantage of this flotation machine is that it cannot self-prime the slurry and is a self-flowing ore. When the number of slots is more than six slots, a step configuration is required, and the return of the mine requires a foam pump.

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