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MAGNETIC SEPARATORS – OVE/OVP

Magnetic Separators – OVE/OVP

Overbelt Magnetic Separator – OVE / OVP

For decades, MAG Magnetics overbelt magnetic separators have been extensively used across various industries. These machines are designed to pick up and remove tramp iron objects from bulk materials such as coal, stone, fertilizers, slag, gypsum, and ores. 

These units are designed for installation either in-line over the discharge head pulley or across the conveyor belts, vibratory feeders or gravity chutes. Mounting the separator magnets in-line above the discharge end of the conveyor, increases the efficiency of the separator and facilitates discharging of the extracted iron parts.

OVE/OVP self-cleaning over belt magnet series used when there are substantial quantities of tramp irons, which are contained in the conveyor burden or where access to the magnet for manual cleaning is difficult. The separator attracts tramp irons and carries them out of the magnetic field and ejects by the discharge belt running around the magnet.

MAG Group’s self-cleaning over belt magnets consist of magnetic box, supporting structure for the discharging belt with drive and tail drums and two additional idlers are mounted on the suitable self- aligning bearings. A suitable geared motor is used to drive the discharging belt. For re-tightening the discharging belt, the fixed axle of the tail drum is fitted with a device for tensioning. Suspension lugs, set of turnbuckles and suspension wire ropes are supplied. 

  • Magnetic box
  • Supporting structure for the discharge belt, including drive and tail drums
  • Two additional idlers mounted on self-aligning bearings
  • Geared motor to drive the discharge belt
  • Device for tensioning the discharge belt on the fixed axle of the tail drum
  • Suspension lugs, turnbuckles, and suspension wire ropes

Important Factors for Selecting Overbelt Magnetic Separators:

  • Material size, type, and density
  • Shape and minimum size of tramp iron
  • Maximum material lump size
  • Percentage of tramp iron in the material
  • Conveyor belt/chute width
  • Bulk material capacity (t/hr or m³/hr)
  • Details of machinery or equipment to be protected
  • Conveyor belt speed
  • Angle of trough idlers
  • Head pulley diameter and material (for in-line installations)
  • Ambient temperature
  • Available AC power supply

Product Range

MAG Magnetics offers a range of standard electrical OVE series and permanent OVP series overbelt magnetic separators suitable for belt widths up to 2500 mm and operating heights up to 950 mm. Electrical over-belt magnets can be chosen as “air-cooled” or “oil-cooled,” with oil-cooled magnets generally being shorter and lighter than their air-cooled counterparts.

OVE Electrical Magnetic Separators:

  • Comply with VDE 0580 standards
  • Require DC supply for coil excitation
  • Use DC rectifiers and three-phase motors rated at 415V/50Hz, with options for other voltages and frequencies
  • Operate within ambient temperatures of -20°C to +40°C

For extraordinary operating conditions—such as high ambient temperatures (over 40°C), high humidity, chemically aggressive atmospheres, severe dust pollution, wet and sticky materials, very large tramp iron objects, or hot materials custom-designed magnets are recommended.

OVP Permanent Magnet Separators:

  • Powered by ceramic strontium ferrite magnets
  • Use three-phase motors rated at 415V/50Hz, with options for other voltages and frequencies

Advantages of OVP Magnets:

  • No rectifier required
  • No risk of coil burnout
  • No electrical cabling needed
  • No power consumption
  • No operational costs
  • No maintenance required
  • No risk of failure
  • Easy to mount
  • Uniformly powerful
  • Cost-effective
  • Retains magnetic strength even during power outages
  • Moisture-resistant, anti-corrosion, and flameproof
  • Fully stabilized and non-deteriorating
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