关键词: 高梯度磁选, 菱形磁介质, 单介质, 多介质, 磁场分布, 数值模拟

Abstract: The ANSYS numerical simulation software was used to study the distribution characteristics of the induced magnetic field of rhombic matrix with different characteristic parameters. The numerical simulation results of the induced magnetic field of a single rhombic matrix indicated that the magnetic flux is the magnetic particle adsorption zone， and the magnetic particle exclusion zone is perpendicular to the magnetic field. As the long axis dimension of the magnetic medium increases， the range of the induced magnetic field increases， the magnetic induction intensity decreases， and the effective adsorption area of the magnetic medium decreases.When the long axis dimension is 2.6 mm， the magnetic field gradient and magnetic field force of the medium surface are higher. Numerical simulation results of induced magnetic fields in multiple rhombic matrix composite systems indicated that as the long axis dimension of the medium increases， the interaction of the induced magnetic field between the magnetic media increases， and the larger the long axis dimension of the medium， the smaller the magnetic induction， magnetic field gradient and magnetic force of the magnetic medium surface. As the dielectric gap decreases， the interaction between the magnetic media increases， and the magnetic induction intensity of the magnetic medium surface increases， but the magnetic field gradient and magnetic field force of the induced magnetic field decrease. The interaction between the magnetic media has no significant effect on the size of the magnetic particle exclusion zone and the adsorption zone.

Key words: High gradient magnetic separation, Rhombicmagnetic matrix, Single magnetic matrix, Multiple magnetic matrix, Magnetic field distribution, Numerical simulation