The invention discloses a heavy medium
cyclone separation device applied to separation of non-magnetic ore such as coarse slime. The heavy medium
cyclone separation device comprises a
cyclone column, and a cyclone cone arranged at the lower end of the cyclone column, wherein a cyclone feeding
pipe is arranged at the upper part of the cyclone column; a cyclone center
pipe which stretches into the cyclone column is arranged in the cyclone column; an inner magnetic pole
excitation coil is arranged on the exposed section of the cyclone center
pipe; an outer magnetic pole group is arranged at the periphery of the lower part of the cyclone column; the outer magnetic pole group consists of multiple electromagnets; outer magnetic pole excitation coils of the electromagnets are connected in series together and load exciting current I1together, and the inner magnetic pole excitation coils load current I2; the
magnetic polarity on one side, which is close to the cyclone column, of the electromagnets is different from the
magnetic polarity at the lower end of the cyclone center pipe. The
magnetic field distribution in a cyclone area of the cyclone is controlled by adjusting the current of inner and outer dual-control electromagnetic pole coils, and motion of magnetic mineral
powder in a special heavy medium cyclone is subjected to magnetic interference, so that a
density field inside the cyclone is changed, and an effect of controlling separation of the heavy medium cyclone is achieved.