Eriez Rare Earth Magnetic Drum Produces the Highest Level of Purity

The use of rare earth magnets, which produce magnetic fields up to twenty-five times stronger than ferrite magnets without any increase in size. allow the removal of low mass particles that may have been generated during the grinding process and weakly magnetic materials, such as rust and stainless steel particles rendered paramagnetic through work-hardening.

Tests were carried out at Eriez''s laboratory in South Wales using SEPR material samples on various drums types and feeder systems. It was found that a high performance, double stage Rare Earth Magnetic Drum model RRS in a vertical housing achieved the high level of purity SEPR required.

The drums consist of a permanent, rare earth, high strength and high gradient fixed magnetic arc element and a rotating stainless steel shell. Material is fed onto the drum shell surface by an Eriez electromagnetic HS42 vibratory feeder, which ensures an even, controlled feed of material. As the rotating shell carries the fine powder through the magnetic field any fine magnetic particles are attracted and held to the surface of the drum to be then discharged by gravity into a separate chute. The fine clean feed material simply falls via its normal trajectory from the drum into the clean product discharge chute.

Eriez Europe Sales Director Gareth Meese comments: “The main benefits of our magnetic drum separators are that they allow high volumes of material to be processed, are self-cleaning and require very low maintenance and spare parts.

In addition, thanks to our vast experience and ability to test in our laboratory using different types of separators with different feeders and configurations we expand the potential applications of Eriez permanent magnetic drum separators in the food, ceramics, and mineral processing industries as well as in the recycling industry. They provide cost-effective solutions to the fine and weakly magnetic iron contamination problems.

Eriez'' Rare Earth drum separators are available up to 1220mm in diameter and up to 3m wide in a variety of configurations.