Abstract
High gradient magnetic separation (HGMS) is widely used to separate feebly magnetic materials. A dynamic buildup equation R4=Et+1 has been built to reflect the change of buildup radius with time and predict these realistic separation processes. In recent years, with the successful application of pulsating slurry in HGMS, the original equation has been increasingly reconsidered to investigate the effect of pulsating slurry. This study explores the particle dynamic accumulation law on a single wire in the transverse HGMS configuration with pulsating slurry. The theoretical expression of the variation of accumulation area with time: Sa2m=Et+1 is derived following the particle trajectory equations. The investigated results of a TV camera system indicate that the realistic buildup process in transverse pulsating HGMS satisfies the derived power equation. The power exponent m is approximately independent of particle size, magnetic field strength, and wire diameter, and it has a positive linear correlation with the pulsating frequency. Similar to previous studies, m is equal to 4 when without pulsation. The coefficient E depends on the force acting on the particle and is related to all parameters affecting the acting force and the power exponent m.
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