Permanent-magnet roller dry magnetic separator

The utility model discloses a permanent-magnet roller dry magnetic separator, which comprises a permanent magnetic roller (1), a carrying belt (2) and a tail wheel (3). A feeding device which is composed of a feeder (4) and a distributor (5) is arranged above the carrying belt (2), and a dividing panel (6) is arranged below the carrying belt (2) and on the outer side of the permanent magnetic roller (1); the permanent magnetic roller (1) is composed of a plurality of annular magnets of same diameter and pure iron rings which are ranged at interval, and the annular magnets which are arranged on the both sides of the pure iron ring have same polarity. The utility model has the advantages of small size, light weight, high magnetic induction strength, etc. The utility model can be widely used for the separation of magnetic minerals with non-magnetic minerals, and the utility model is particularly suitable for the dry separation of blocky strong magnetic materials whose granularity is 5-80 millimeters.