Magnetic hydrocyclone separation method and magnetic hydrocyclone separation device

The invention discloses a magnetic hydrocyclone separation method and a magnetic hydrocyclone separation device. The magnetic hydrocyclone separation device comprises an inverted-cone boss cylindrical shell (1), centers of upper and lower ends of the inverted-cone boss cylindrical shell (1) are provided respectively with outlets (2,3), the side of the upper part is provided with a tangential inlet (4), an electrode bar (5) is arranged in the center of the inner cavity of the inverted-cone boss cylindrical shell (1), the electrode bar (5) is used as one electrode, the inverted-cone boss cylindrical shell (1) is used as the other corresponding electrode, an insulated wire (6) is wound on the inverted-cone boss cylindrical shell (1), and two ends of the insulated wire (6) are connected respectively to direct-current positive and negative electrodes so that a vertical magnetic field is formed. Water, waste water or sewage to be treated is input from the tangential inlet (4), flow and pressure are adjusted, and two separated materials are discharged from the outlets (2,3) in the centers of the upper and lower ends of the inverted-cone boss cylindrical shell (1). The magnetic hydrocyclone separation device has functions of flow rotation and magnetization, has good water treatment effects and a simple structure, is convenient for installation and use and widens an application range and efficacy of a hydrocyclone separation technology.