The magnetic particles on the conveyor belt was sent into the magnetic separation, manganese grain due to roll with magnetic, immediately be strong magnetic field adsorption in magnetic roller, and gangue minerals (with quartz primarily, followed by dolomite, calcite, sericite, feldspar, clay minerals, etc.) with no magnetic, magnetic roller of strong magnetic to it not produce suction, with magnetic roller rotation, manganese grain has been sucked in magnetic roller, while the gangue grains in magnetic roller turned to front position thrown off in front of ore insulation board (by changing the size of every ore board Angle can be adjusted concentrate grade), manganese grain continue to be magnetic roller to take off the magnetic trap automatically fall into a fight for the collection selection ore concentrate finished products.

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