Overband magnetic separator STM


Overband magnetic separator STM

The STM type overband magnetic separator is designed for automatic separation of ferrous metals from bulk materials transported on belt conveyors or vibrating feeders. The magnetic separator protects mills, crushers and other process machines against damage caused by iron parts such as screws, pipe pieces, bearings or crusher teeth. The STM separator is also used to recover valuable ferrous scrap in waste recycling processes.

The STM suspended separator is reliable, very robust and designed for continuous operation. The separator is characterized by high metal separation efficiency. The ferrite or neodymium permanent magnets used in the separator have high coercivity, which makes them difficult to demagnetize. Therefore, the magnetic separator has a long service life.

Performance features of the overband separator from Magnetix

  • Custom made overband separator according to individual requirements.
  • Optimal adaptation to the width and speed of the conveyor belt.
  • Robust and durable design for continuous operation 24/7 under difficult working conditions.
  • Ferrite or neodymium magnetic block.
  • Magnetic circuit with deep magnetic field and high flux density.
  • High coercive magnetic material.
  • Magnetic field range up to 500 mm in accordance with DIN VDE 0580.
  • Reinforced rubber belt with hot vulcanized cleats.
  • NORD or SEW helical-bevel geared motor. Other manufacturers on request.
  • Accessories from leading manufacturers.
  • Optional explosion-proof design in accordance with the requirements of the ATEX directive.

Applications of the overband magnetic separator

  • Separation of tramp metal from coal, granite, limestone, basalt and other aggregates to protect mills and crushers.
  • Removal of metal contaminants at particular stages of cement production.
  • Recovery of iron scrap from mining and processing heaps.
  • Separation of tramp iron from moulding sand.
  • Recovery of ferrous scrap from municipal and industrial waste.
  • Purification of alternative fuels RDF and compost.
  • Purification of cullet, rubber, plastics and other materials coming from recycling.
  • Purification of chips, shavings and other shredded wood materials.
  • Installation on mobile screens and crushers (light neodymium separators).


Suspended separator during operation


Versions of the overband separator

  • STM-F type overband magnetic separator
    Equipped with a ferrite magnet with a deep magnetic field.
  • STM-N type overband magnetic separator
    Equipped with a neodymium magnet with high flux density.
  • Separator for mobile installations type STM-H
    Equipped with a Danfoss hydraulic motor.
  • STM-EX type explosion-proof separator
    Manufactured in compliance with the ATEX directive and certified by a notified body.

Separator accessories

  • Automatic bearing lubricators.
  • Belt alignment switches and rotation sensor.
  • Power supply and control cabinet.
  • Supporting structure with adjustable chain slings.
  • Discharge chute and self-unloading scrap container.

Working principle of the overband separator

The magnetic separator is usually suspended on a special support structure above the conveyor belt transporting the material. There are two ways to suspend the magnetic separator - transversely to the direction of the transported material or longitudinally above the conveyor drive drum. The magnetic block made of permanent magnets built into the separator attracts metals contained in the transported material. After connecting the power supply to the electric motor of the extractor belt drive, the captured metals are conveyed to a discharge chute and then to a scrap container.

Videos featuring the suspended separator

Why choose our overbelt magnetic separators?

The magnetic separators in our offer are devices that can be tailored to the needs of a given company. The machines we produce have a magnetic circuit with a long range and magnetic field intensity, which allows them to operate effectively and efficiently. Moreover, it is possible to optimally adjust them to the width of the conveyor and the speed of the belt. The advantages of belt magnetic separators are also: low operating costs - the permanent magnet does not consume electricity and a solid structure ensuring long service life. To manufacture the devices, we use equipment from renowned manufacturers.

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