STUDY ON THE MOTION STATES OF IMPURITY PARTICLES IN STATIC MAGNETIC FIELD

摘要

The physical property differences between impurity particles and mother metal including conductivity and magnetic suscepbility were used for electromagnetic separation, which would arise different motion rules in magnetic field to make the mother metal more purified. The motion states of impurity particles (metallic particles magnetized) imposed by magnetic force in static magnetic field were studied mainly. After analyzing of force imposed and theoretic calculation, the final motion velocities of impurity particles imposed by magnetic force were confirmed. The separating efficiencies of impurity particles were made out adopting the models of piston and trajectory according to the different fluxion states of molten metal, respectively. From the results, it was found that the influence factors of separating efficiency were different obviously when the melt was in different fluxion states. This conclusion was applicable to weak magnetism melt, especially to molten aluminum.