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Figure 9.2 shows a permanent magnetic drum separator, which consists mainly of a permanent magnet system, a rotating drum, a separating chute, a feed tank, and a flushing pipe. For magnetite separation, the magnetic field intensity on the surface of the drum is between 0.1 and 0.4 T.
Permanent Magnet Motor Material Use. In the permanent magnet, a rotor can now be a solid piece made from press and sinter powder metallurgy magnetic material, for example. You can design the rotor in such a way as to have the magnets glued to the outer diameter or encased within the rotor, as shown below: (Comparison of AC induction motor vs ...
The HydroFloat Separator is an aerated fluidized bed separator. The synergistic effect of combining flotation with gravity concentration results in an outcome that cannot be achieved by either approach alone.
The NEMA Premium Motor efficiency drops from about 90% to about 72% at 600 RPM and the ECPM drops from about 94% to 83%. While system operation affects equipment efficiency, permanent magnet motors have been proven to show higher efficiencies over AC Induction Motors. Figure 2.
13.4.3 Material Transport in Magnetic Separators. Commercial magnetic separators are continuous process machines, and separation is carried out on a moving stream of particles passing into and through the magnetic field. Close control of the speed of passage of the particles through the field is essential, which typically rules out free fall as ...
Synchronous speed is the fastest theoretical speed a motor can possibly spin when the rotor spins at the same speed as the motors internal rotating magnetic field.
Therefore, if the speed of the vibrating trough exceeds a certain limit, the magnetic force is not enough to suck them up because of the sudden increase in inertial force, so the weak magnetic minerals The speed of movement in the magnetic field of the magnetic separator should be lower than the speed of movement of the ferromagnetic mineral.
the number of poles in the motor winding. The synchronous speed can be calculated as: n = f 60 where. n = shaft rotation speed f = frequency of electrical power supply p = number of poles. Note an induction motor will never reach its synchronous speed. If it did the rotor would appear to be stationary to the rotating stator field since it would rotate with the same speed.
June 10, 2020
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