Bunting Unveils High-Intensity Electromagnetic Wet Filter for Enhanced Separation

Bunting has introduced a new Electromagnetic Wet Filter, specifically designed to tackle the challenges of high-intensity magnetic separation in liquids and slurries. The filter uses a magnetic field strength ranging from 3,500 to 10,000 Gauss, allowing it to separate fine iron particles and paramagnetic minerals from materials in the ceramics, mineral processing, and recycling industries. This innovation fills a gap left by traditional magnetic separation technologies that cannot effectively capture weakly magnetic particles.

Advanced Magnetic Technology for Multiple Industries
The Electromagnetic Wet Filter offers enhanced separation capabilities, enabling industries to extract magnetic contamination more efficiently. In the ceramics sector, the filter removes problematic magnetic particles—both free iron and paramagnetic minerals—from ceramic slips and glazes, improving product quality. In mineral processing, the filter is adept at eliminating fine iron and paramagnetic minerals like hematite from non-metallic minerals, such as kaolin, silica sand, and calcium carbonate. Moreover, it is an essential tool for wastewater treatment in steel production plants and power stations, where it helps remove scale and free iron from water.

Enhanced Efficiency and Customizable Design
Bunting’s new filter stands out for its ability to generate a high magnetic field gradient on the matrix surface, which enhances the separation efficiency. With a background magnetic field ranging from 2,500 Gauss to 10,000 Gauss, the filter produces a much stronger localized magnetic field—up to three times the field strength on the matrix surface. This advanced design allows for more effective removal of even the most difficult magnetic particles, especially in industries where precision and high separation rates are critical.

Streamlined Operation and Maintenance
To ensure efficient operation and reduce downtime, the Electromagnetic Wet Filter is designed with automated cleaning systems and easy maintenance features. It is equipped with a Siemens S7-1200 PLC and Siemens HMI interface for precise control over the cleaning and operation parameters. Operators can set cleaning frequencies and manage the separation process effectively. The system also includes a directional flushing mechanism that helps to remove captured magnetics from the matrix, improving the filter’s performance for subsequent batches.

Cost and Time Efficiency for Industrial Applications
One of the major advantages of the Electromagnetic Wet Filter is its energy efficiency and thermal stability, made possible by oil-cooled electromagnetic coils. This not only ensures low operating temperatures but also reduces energy consumption over time. The filter’s built-in jig further enhances operational efficiency by making matrix handling safer and faster, reducing maintenance time and increasing overall production uptime.

Solving Key Challenges in Wet Magnetic Separation
Adrian Coleman, Bunting’s European Technical Director, highlighted the significance of the new filter in solving the challenges of high-intensity magnetic separation, particularly in liquid and slurry applications. By effectively removing magnetic contaminants from materials, the filter reduces reject rates and minimizes rework costs in the ceramics industry. In mineral processing, it allows for higher-quality material processing without the need for costly drying stages, thus improving operational cost efficiency.