The　application　of　rotating　magnetic　field　can　reduce　the　effect　of　agglomeration　of　fine-grained　strong　magnetic　minerals　in　the　sorting　process.　In　this　study,　a　three-dimensional　finite　element　model　of　two　spherical　magnetic　particles　agglomerated　in　a　rotating　magnetic　field　is　established,　and　a　rotating　magnetic　field　is　constructed　using　a　quadrupole　magnet　to　verify　the　simulation　results.　The　results　show　that　the　numerical　simulation　results　can　predict　the　experimental　results　more　accurately,　and　the　trajectories　of　the　magnetic　particles　in　the　agglomeration　process　are　centrosymmetric　spiral　curves.　The　utilization　of　the　rotating　magnetic　field　as　well　as　increasing　the　rotating　magnetic　field　speed,　magnetic　field　strength,　and　the　initial　spacing　of　the　magnetic　particles　will　enhance　the　tendency　of　the　magnetic　particles　to　get　rid　of　the　agglomeration.