Eriez has expanded its Salient Pole Rare Earth (SPRE) drum line to include food processing applications. Building on the product’s success in the mineral processing and recycling industries, SPRE drums are optimised to meet food processing requirements, ensuring the purity and safety of food products.
Eriez Salient Pole Rare Earth Drum Separators feature a self-cleaning design and generate a magnetic field of up to 6,000 gauss. This allows SPRE drums to remove foreign contaminants in food processing applications.
Utilising neodymium or samarium-cobalt rare earth magnets, SPRE drums offer magnetic forces that exceed conventional magnets such as ferrite or alnico. Rare earth magnets also maintain a strong magnetic field over an extended distance, facilitating thorough separation of metal contaminants.
The arrangement of magnetic poles on the drum surface creates distinct magnetic fields, enhancing the efficiency of material separation based on magnetic properties. Used across various industries, drum separators remove ferrous and other magnetic contaminants from product flows. As the drum rotates, magnetic particles are attracted to its surface and subsequently removed.
Eriez SPRE drums can capture fine ferrous particles with precision. The durability of rare earth magnets further ensures long operational efficiency.
An example of the SPRE drum in action is Comercializadora de Mani (COMASA), a Nicaraguan peanut company that recently installed 14 SPRE drum separators at its Chinandega plant. This installation reduced reprocessing time while maintaining food quality and purity standards.
“Beyond extracting magnetic impurities from ore streams and recyclables like plastics and metals, our SPRE drum separators are now widely used to safeguard food products against metal contamination,” said Chris Ramsdell, sales manager of magnetic separation. “This ensures consumer safety and product integrity for food processors like COMASA.”
