Industries
- PlasticsBunting is the leader for Metal Detection in Plastics. Protect your equipment from costly repairs.
- RecyclingBunting® is a one-stop source for recycling equipment used in material recovery facilities.
- Auto ShreddingWith our line of equipment you can attract and extract all metals from your recycling stream.
- FoodWe have over 50 years of experience in the food industry. Safely remove metals during food processing.
- Grain & MillingSuccessful detection and separation of metal to protect your equipment from damage and save your organization money.
- Powder & Bulk SolidsRemove metals from powder and chemical applications to prevent costly damage to your processing equipment.
- Mining & AggregateOur line of rugged separation equipment protects your belts and crushers from tramp metal while withstanding the harshest environment.
- Non-WovenNeedles, pins, staples and other metals are stopped by a complete line of innovative metal detection and magnetic separation equipment.
- Metal StampingAmerica’s most complete line of permanent magnetic conveyors and conveyor components for the Metal Stamping Industry.
- PrintingPrecision-built Bunting magnetic cylinders and flat bases make your existing press a better, and productive.
- All Industries
Request a Quote

Get in touch with us at our toll-free number 1-800-835-2526 or request a quote here:

Talk to an expert
Products
- Magnetic SeparatorsWe make permanent Magnetic Separation Equipment for any application, suitable for almost any industry.
- Metal DetectionDesigned to monitor gravity-fed products, pneumatically conveyed materials on belts, & liquids and slurries in pipes.
- Material Handling EquipmentA large lineup of material handling equipment for the Recycling, Metal Stamping, Plastics and Food industries.
- Printing ProductsOur magnetic cylinders can be custom built for any type of printing press.
- Buy Magnets OnlinePermanent magnets and assemblies in hundreds of shapes and sizes, available for immediate shipment.
- Custom Magnets & Magnetic AssembliesWe offer a variety of turnkey solutions for custom magnetic assemblies, which are designed and built around our core magnets.
- Product RegistrationTo ensure you receive the full benefits of your warranty, please complete the online registration form.
- All ProductsMagnetic Separation, Metal Detection, and Material Handling solutions for all industries.
Request a Quote

Get in touch with us at our toll-free number 1-800-835-2526 or request a quote here:

Talk to an expert
Request Quote
Catalogs
About
- AboutBunting is a profile in growth and innovation. We are a unified global company under one name.
- Trade ShowsMeet up with our team at a trade show near you to get a first-hand look at our products.
- NewsGet the latest news about Magnets, Bunting, your Industry, and more.
- CareersStart your career at Bunting today. View open positions and apply now.
- BenefitsWe are committed to offering employees a comprehensive benefits program.
- Vision, Mission & ValuesSatisfy our customers’ needs to make their plant more productive and efficient.
Spare Parts
Contact Us
Buy Magnets

Products Industries View Our Catalogs

Request a Quote

Get in touch with us at our toll-free number 1-800-835-2526 or request a quote here:

Electro Crossbelt Magnet Protects Gold Mine

Electro Crossbelt Magnet Protects Goldmine-Bunting

In a remarkable feat of engineering, the Bunting manufacturing plant in Redditch, UK has constructed the largest Electro Crossbelt (Overband) Magnet to date. This colossal magnet, weighing in at 13 tons, has found its home in a gold mine located in Northern Finland. Over the course of twelve months, it will diligently extract and separate harmful tramp metal from approximately 2.7 million tons of conveyed ore, shielding crushers, screens, and other crucial upstream processing equipment.

The Electro Crossbelt Magnet operates on the principle of high-strength magnetic forces, swiftly lifting and automatically discarding any tramp ferrous metal encountered within the conveyed ore. Suspended in a crossbelt orientation across the non-magnetic head pulley of a conveyor, it creates a powerful magnetic field. Any tramp metal drawn into this field is magnetically attracted and hoisted onto the surface of a continuously moving self-cleaning rubber belt. Reinforced with heavy-duty rubber wipers, the belt efficiently removes the captured metal, diverting it away from the conveyed ore and into a designated collection area.

This groundbreaking Electro Crossbelt Magnet is part of a significant expansion initiative at the Kittila Gold Mine in Northern Finland.

Collaborating closely with mine operators, Bunting engineers developed a customized solution tailored to the mine’s unique challenges. Factors such as conveyor width, ore volume, and the characteristics of tramp ferrous metal were meticulously considered in the design process. Utilizing an in-house developed Electro Crossbelt Magnet Selection Program, the design team calculated the optimal magnetic field and force density required for effective separation.

The result is the model 205 OCW50 Electro Crossbelt Magnet, boasting a 17 kW electromagnetic coil cooled by recirculated oil. This cooling mechanism is crucial for maintaining the magnet’s efficiency, as magnetic force diminishes with increasing coil temperature. With dimensions of 4.2m length, 3m width, and 2.2m height, this formidable magnet was assembled at Bunting’s manufacturing facility in Redditch.

The Electro Crossbelt Magnet is meticulously engineered for optimal placement in a crossbelt configuration, precisely positioned above the non-magnetic head pulley of a 1600mm wide conveyor. This conveyor operates at a 12° incline and a speed of 0.75m/sec. The material being conveyed consists of ore particles ranging in size from 70mm to 400mm, with varying capacities between 450 and 765 tons per hour, totaling approximately 2.7 million tons annually.

The tramp iron, diverse in size and composition, encompasses steel rebar (measuring 2400 x 20mm dia.), cable bolts (measuring 600 x 15mm dia.), steel mesh, and fractured drill bits. The Electro Crossbelt Magnet boasts a maximum working gap of 600mm, referring to the distance between the magnet face and the bottom of the ore conveyor. This magnet is adept at lifting and segregating tramp metal amidst a spread burden of up to 500mm, necessitating a robust magnetic field with high force density.

“Large mining projects, such as this, often require bespoke solutions,” says Adrian Coleman, the General Manager of Bunting’s Redditch facility. “Over 40 years, Bunting has gained considerable experience in designing and building large Electro Crossbelt Magnets. However, this was the largest we have ever manufactured at Redditch, presenting many challenges, which were overcome. And the design and manufacturing process all took place during the Covid-19 crisis.”

English