This is an Alternating Current powered electrical device creating an alternating and decreasing magnetic field for the demagnetisation of containing magnetised ferromagnetic particles such as Magnetite or Ferrosilicon recovered by Wet Drum Separators [LIMS] in Dense Media Separation Plants.
Wet Drum Separators [LIMS] are part of the process in “Dense Media Separation” and Magnetite Ore Concentrator plants, magnetic particles discharge from a LIMS in the form of magnetic agglomerates and if not dispersed they can have a detrimental impact on the process and separation efficiency.
In a Dense Media Separation application magnetised particles can increase the viscosity of the medium leading to inefficient separation. In Magnetite Ore upgrading the magnetised particles can entrain non-magnetic particles which are carried from one separation stage to the next, where they can be incorrectly classified as large particle on a screen or in a cyclone. The magnetic agglomerates can be dispersed by passing them through an air cored AC solenoid coil at 50 or 60 Hz