Assessment of the influence of the magnetic filter type on the magnetic field of a separator type MCR-5

The magnetic separation is a process of great practical relevance. The specifics of the separated material determine the type of the used separator. The aim is to achieve the maximum degree of purification of the processed product. The article examines a construction of real magnetic separator type MCR 5 with a specific problem defined by the practice. The analysis was conducted using a specially developed mathematical models based on the finite elements method. Models of the separator's structure with ferrite material concentrators and gaps of non-magnetic material were examined as well as those with different orientation of the magnetic induction vector of the individual permanent magnets. The stationary magnetic field of the system is analyzed as a flat parallel system, taking into account the nonlinear properties of the materials, which are separated by the separating apparatus. Also are examined the influence of the thickness and the material of the outer body (housing) of the separator. The distribution of the field is modeled numerically using the finite elements method and the software package FEMM 4.2. The results allow to optimize the structure of the magnetic separator and to achieve the highest level of purification.