Magnetic force selection device, magnetic force selection method and manufacturing method of iron source

摘要

It is possible to efficiently separate the ferromagnetic particles from the powder particles even when the powder particles containing the ferromagnetic particles are mass-processed or the layer of the powder particles to be fed is thick, and it is possible to efficiently separate the ferromagnetic particles from the powder particles, A magnetic force selecting device capable of sorting magnetic force and further solving the problem of adhesion of ferromagnetic particles, which is unique to a belt conveyor type magnetic separator, is provided. At least one pair of guide rolls, and a conveyor belt which is laid across the pair of rolls and conveys the powder containing the ferromagnetic particles, wherein either one of the guide rolls is a hollow roll, And a plurality of magnets arranged along the inner circumferential surface of the roll in a row in which different magnetic poles are alternately arranged in the circumferential direction at an interval, wherein the conveyor belt on the outer circumferential surface of either one of the guide rolls is wound And shielding the magnetic force lines from the magnets by covering the arc regions excluding the arc regions.