Dynamic capture behavior of rotating matrix to paramagnetic particles in centrifugal HGMS process: Based on FEM

Abstract

Centrifugal high gradient magnetic separation (CHGMS) was developed to produce a high-quality magnetic product from weakly magnetic materials. In this research, the dynamic behavior of particles in the CHGMS process and the magnetic capture of rotating wires to paramagnetic particles were analyzed through Finite Element Method (FEM). It was found that particles move spirally with slurry in the separation area of the separator, due to the stirring of magnetic wires, and the motion traces of paramagnetic particles are more tortuous and complicated than those of non-magnetic particles. The capture capacity of elliptical wire to paramagnetic particles is stronger than that of circular wire, but is weaker than that of square one. The distance from rotating wires to the center of matrix significantly influences the mass weight of paramagnetic particles captured onto the wires, and there is a clear interaction between wire layers during the capture process of rotating matrix.