Due to the adoption of the eccentric magnetic pole technology, the eddy current separator has an eccentric magnetic pole built in the eddy drum, which can ensure that the magnetic field changes are concentrated in the area where the materials are concentrated. The magnetic pole can be adjusted according to needs to ensure that the parabola effect is maximized, so as to enhance the materials' stress. Thus improving the sorting rate of small materials is mainly used in the environment where the diameter of materials within 5mm is particularly small.