Magnetic cyclone separator, separation apparatus and separation method

The present invention discloses a magnetic cyclone separator, a separation apparatus and a separation method. The magnetic cyclone separator comprises a cyclone separator and an additional magnetic field distributed outside, wherein the cyclone separator comprises an inlet pipe, an outlet pipe, a cyclone barrel and a solid-rich phase outlet pipe, the cyclone barrel is arranged on the middle portion of the cyclone separator, the lower portion of the cyclone barrel is connected with the solid-rich phase outlet pipe, the inlet pipe is arranged on the upper portion of the cyclone separator, the outlet pipe is arranged in the middle of the top portion of the cyclone separator, and the additional magnetic field is the magnetic field produced by electric energy or a permanent magnet and providing an adsorption effect for solid particles having magnetic induction. According to the present invention, the magnetic cyclone separator can be used for gas-solid separation and liquid-solid separation, and the oil slurry purification is performed by using the method using the magnetic cyclone separator so as to substantially improve the recovery efficiency of the catalyst dust in the oil slurry, ie., the oil slurry purification efficiency.