Magnetic interference heavy medium cyclone

Abstract

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.

Description

technical field [0001] The invention relates to a cyclone separation device, in particular to a magnetic interference dense medium cyclone suitable for dense medium cyclone separation in the coal industry. Background technique [0002] At present, the dense medium cyclone is widely used as the main sorting equipment in the coal industry. Its online control means include adjusting the feeding pressure, adjusting the split flow, etc. Although these means can adjust the sorting effect of the equipment, they have great side effects. Although the feeding pressure can increase the actual separation density, the separation accuracy will decrease; adjusting the split flow to control the amount of slime in the suspension can improve the stability of the suspension, but the rheology of the suspension will deteriorate. At present, the control method of the dense medium cyclone directly acts on the mixture of the medium suspension and the selected mineral, and cannot only directly act o...

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Problems solved by technology

[0002] At present, the dense medium cyclone is widely used as the main sorting equipment in the coal industry. Its online control means include adjusting the feeding pressure, adjusting the split flow, etc. Although these means can adjust the sorting effect of the equipment, they have great sid

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