Magnetic separation is a separation of mineral beneficiation methods, suffered the size of the magnetic force in the magnetic field are sorted according to magnetic differences between the mineral particles and minerals. According to different magnetic properties of various materials in the future by the magnetic field generated, where that can be magnetized material, are…

Currently, artificial sand has gradually occupy the market has become a major source of sand and gravel, but illegal mining behavior persists in many places. Today the ecological situation is grim, the full protection of the ecological environment can not be delayed. We must take effective measures to prevent illegal excavation of sand and gravel…