In the magnetic separator, the ore pulp flows into the tank through the feed box. Under the action of the water flow of the feed water pipe, the ore particles enter the feed area of the tank in a loose state. Under the action of the magnetic field, the magnetic ore particles gather to form "magnetic clusters" or "magnetic chains". These "magnetic clusters" or "magnetic chains" are affected by the magnetic force in the ore pulp, move toward the magnetic poles and are adsorbed on the cylinder.