Bunting has introduced an advanced Electromagnetic Dry Filter designed to remove free fine iron particles from powders. This high-intensity magnetic separator generates ultra-strong magnetic fields, ensuring enhanced separation efficiency in a wide range of applications, including mineral processing, chemical and pharmaceutical production, ceramics, and recycling.

The Filter features a centrally located vibrating canister within a specially designed electromagnetic coil. This coil produces magnetic fields between 3,500 and 5,000 gauss in the canister, concentrating on matrix points to reach peaks of up to 12,000 gauss. As fine powder flows under gravity through the vibrating canister, magnetic stainless-steel matrix elements attract and retain ferrous particles. Once the batch feed is stopped, the electromagnet deactivates, releasing the captured particles into a separate collection area before resuming processing.

The Filter is different from permanent magnetic separators, which sometimes struggle with challenges such as bridging, ratholing, and poor flowability due to particle characteristics, electrostatic charges, and environmental factors like humidity. Its ultra-high magnetic fields and multiple capture points significantly improve separation efficiency, making it ideal for purifying high-value fine powders processed in controlled batches.

To streamline operations, the Electromagnetic Dry Filter integrates into production lines via a Siemens S7-1200 PLC and Human Machine Interface (HMI) control system. Designed for minimal maintenance and downtime, it includes a built-in jig crane, enabling quick and easy removal of the matrix canister for inspection and cleaning.

“The development of the Electromagnetic Dry Filter has been customer-driven,” said Adrian Coleman, Bunting’s Technical Director. “Processing powders is often challenging due to material behavior, and our design engineers focused on optimizing powder flow while maximizing magnetic separation efficiency.”