Analysis on the Magnetic Field Characteristic of Roll Magnetic Separators with Different Magnetic System Structure

Roll magnetic separators are blandly used to separate moderate and strong susceptibility minerals,but the correlation between the magnetic field characteristic of different magnetic system and the characteristics(density and per magnetic susceptibility) of minerals is rarely discussed.The paper simulated the magnetic field lines distribution and magnetic induction intensity of different magnetic system,including:single ring prototype,four-magnetic splicing poles prototype without yoke,eight-magnetic splicing poles prototype with and without yoke.The function between the magnetic induction intensity and separation distance was given.The function between ratios of the density and magnetic susceptibility of single magnetic particle,and the magnetic field strength of different magnetic system was studied.By comprehensive analysis,the minerals separation standard corresponding to magnetic system prototype was obtained.The magnetic field characteristics of roll magnetic separators with different magnetic system were analyzed,the results could provide basic theoretical guidance for the selection of a suitable roll magnetic separator to efficiently separate moderate and strong magnetic minerals.