Abstract: Magnetic cyclone separator is a new equipment and developed for magnetite reconcentration, it is characterized by the use of vertical rotating magnetic system with spiral arrangement of magnet poles and rotational inner cylinder which rotation direction is opposite to the system, they can form a compound force field consist of magnetic force, centrifugal force, rising water force, gravity and other forces, thereby, it is beneficial to separate the gangue and deficient accrete body from concentrate efficiently.The semi-industrial test with the equipment is complicated in Dashihe concentrator base on laboratory tests, the result show margin of grad increased and recovery is respectively 1.22%, 2.01% higher than complex glittering magnetic field concentrating machine.

Key words: Magnetic cyclone separator, Magnetite reconcentration, Magnetic system speed, Inner cylinder rotational speed, Rising water flow