Electrostatic Separators

The revolutionary new electrostatic separator from Bunting provides the only known method of separating some important minerals and removing or recovering metals from certain recycled materials.  Separation occurs by induced an electrostatic charge into a conductive dry-liberated particle.  Electrostatic separators are commonly used in conjunction with high-intensity magnetic separators.  The electrostatic technology is successfully used in the mineral processing, plastics and recycling industries, although there is a continual expansion in the application of the technology.


Master Magnets Drum Separators are used in applications where there is a high throughput of material to be processed and where there is a need to extract smaller ferrous particles from a given product stream. Drum separators are available in a wide range of sizes to suit a customers specific throughput requirements and can either have an internal permanent or electro magnet system depending on the application.

Operating Principle

Magnetic Drums are constructed with a 180 degree stationary magnet system, around which a cover revolves. Material is fed onto the drum cover at the leading point of the magnet section. Magnetic materials will adhere to the drum cover as it revolves and will then be discharged behind the normal trajectory. Non-magnetic materials will free-fall forward following their normal trajectory.

For applications that may involve co-mingled materials, Mastermag can offer a magnet system that features an alternating pole arrangement as shown in the image below. This magnet system enables the entrapped ferrous materials to flip over the magnetic poles as they move over the drums surface and become free from the non-metallic product.

We manufacture 4 types of Drum Separators, please click on the models tab above to find out more information, or download a brochure.





Bunting – Electrostatic Separator Datasheet