Choosing the Right Permanent Crossbelt Magnet for Aggregate and Mining

The Aggregate, Mining & Minerals industry relies on permanent crossbelt (overband) magnets to protect crushers, screens, and conveyors from damage caused by harmful tramp ferrous metal. However, there is not a “one size fits all” solution for every operation. There are various designs of permanent crossbelt magnets, each tailored to specific applications. A thorough understanding of the installation is crucial for selecting the appropriate magnet. Bunting has designed a wide variety of crossbelt magnets for different applications to help customers address their unique needs. 

The Crossbelt Magnet, A Workhorse of Efficiency

In the early 1980s, Bunting pioneered the development and production of the first permanent crossbelt magnets, marking a significant milestone in industrial innovation. Since then, the company has distributed thousands of these cutting-edge devices to enterprises worldwide. While the fundamental principles remain unchanged, continual advancements in magnet materials and manufacturing methodologies have markedly augmented the efficiency of ferrous metal separation.

Crossbelt magnets serve as indispensable tools, seamlessly lifting and eliminating unwanted tramp ferrous metal from conveyed mined or quarried materials. Featuring a permanent design, these magnets consist of a magnet block housed within a sturdy frame, complemented by two or four pulleys and a revolving self-cleaning rubber belt.

During operation, mined or quarried materials pass beneath the crossbelt magnet, which adeptly attracts, lifts, and subsequently eliminates detrimental tramp ferrous metal. The selection of the magnetic system—whether Permanent or Electro—is contingent upon factors such as conveyor width, material depth, and the characteristics of the tramp ferrous metal at hand.

Crossbelt Models and Applications

Bunting’s OCW Heavy Duty Oil Cooled Electro Crossbelt Magnetic Separator is engineered for robust ferrous extraction, offering unparalleled power within our product lineup. Its high magnetic strength allows for operation at wider gaps and with heavier loads, making it ideal for deep troughed conveyors in recycling operations. Available in various sizes, the OCW fits seamlessly into any setup, whether positioned inline over head pulleys or spanning conveyor belts from 36″ to 84″ in width.

Similarly, the ACW Heavy Duty Air Cooled Crossbelt Magnetic Separator provides a formidable magnetic separation solution with minimal maintenance requirements. Utilizing an air-cooling system, it reduces upkeep compared to oil-cooled alternatives without compromising on power. The intense electromagnetic field efficiently captures ferrous particles, ensuring a purer end product.

Bunting’s Heavy-Duty Electro Crossbelt Magnetic Separators stand as the pinnacle of our product range, delivering unmatched power and versatility. Available in a wide range of sizes, these separators boast exceptional magnetic strength, capable of efficiently extracting ferrous material from deep troughed conveyors. Positioned across conveyor belts or inline over head pulleys, they offer standard models suitable for belts ranging from 24″ to 78 ½” in width.

Choosing the Right Crossbelt Magnet

Choosing the right crossbelt magnet, whether permanent or electro, depends on the specific application. Bunting’s team of applications engineers evaluates factors such as the objective of ferrous metal separation (e.g., protecting the plant), the characteristics of tramp ferrous metal (e.g., shape, size), and the properties of the conveyed material (e.g., size range, burden depth). By considering these criteria, the team can determine the most suitable crossbelt magnet for each application.

With a legacy stretching across decades and a commitment to tailored solutions, Bunting continues to lead the charge in developing innovative magnetic separation solutions finely tuned to the needs of mining and quarrying operations.

Contact us today to discuss your application or request a quote.