Permanent Overband Magnets

Permanent Overband Magnets are a highly efficient solution for separating ferrous metals from bulk materials in various industries, including recycling, mining, and quarrying. These magnets are designed to be installed above conveyor belts, where they automatically attract and remove harmful tramp metal, protecting processing equipment and ensuring product purity. Unlike electro overband magnets, Permanent Overband Magnets do not require continuous electrical power to maintain their magnetic field, resulting in significant cost savings on energy and maintenance.

The performance of Permanent Overband Magnets rivals that of traditional electro overband magnets, offering comparable or even superior effectiveness in ferrous metal recovery. With advancements in magnet materials and manufacturing techniques, these magnets feature robust designs that enhance safety and reliability. They are constructed with sealed stainless steel shielding to withstand harsh environments while minimizing maintenance needs.

In operation, as bulk materials pass under the magnet, ferrous contaminants are lifted away from the non-magnetic burden and disposed of automatically. This process is crucial for industries that need to protect their equipment from damage caused by metal debris while also recovering valuable materials for reuse. The versatility of Permanent Overband Magnets allows them to be tailored to specific applications, making them an essential component in modern material handling systems.

For optimal performance, selecting the right type of overband magnet, whether permanent or electro, depends on factors such as the size and shape of the ferrous materials, the depth of the conveyed burden, and the specific operational requirements. With decades of experience in designing and manufacturing magnetic separation solutions, companies like Bunting provide expert guidance to ensure that clients choose the most effective system for their needs.

Cost-Effective Operation: Permanent Overband Magnets offer significant cost savings compared to electromagnetic alternatives, with lower purchase prices and minimal energy consumption.

Reliable Performance: Designed for continuous 24/7 operation, these magnets provide consistent ferrous metal separation without the need for a constant power supply.

Versatile Application: Ideal for various industries, including recycling, quarrying, and mining, effectively removing tramp iron and recovering ferrous metals.

Low Maintenance: Heavy-duty construction and durable components reduce maintenance requirements, ensuring long-term reliability.

Deep Field Separation: Advanced magnetic designs allow for adequate separation even with deeper burden depths, rivalling the performance of some electromagnetic systems.

Environmentally Friendly: With no need for continuous electrical power to generate the magnetic field, these magnets offer a more sustainable solution for metal separation.

Compact Design: Lightweight and compact models are available, making them suitable for mobile recycling plants and installations with limited space.

Magnet Type

Rare Earth Neodymium or Ceramic Ferrite

Magnetic Strength

Up to 10,000 Gauss at magnet face

Materials Handled

Suitable for dry and wet bulk materials

Standard Sizes

Width: 24" to 60" (600 mm to 1500 mm)
Custom sizes available upon request

Suspension Height

Typically 6" to 16" (150 mm to 400 mm), adjustable

Frame Construction

Powder-coated mild steel or stainless steel options

Positioning Options

Inline (over head pulley) or Crossbelt

Safety Features

Belt guard, emergency stop controls

Drive Options

Available in Electric or Hydraulic, providing flexibility for different operational setups.

ATEX 22 Certification

Suitable for use in potentially explosive dust atmospheres, ensuring safety in specific industrial environments.

Heat Resistant, Antistatic Belt

Designed to withstand high temperatures and reduce static buildup, enhancing safety and performance.

Armoured Belt

Offers increased durability for heavy-duty applications in harsh environments.

Stainless Steel Frame

Provides enhanced corrosion resistance and durability, ideal for demanding industrial settings.

Custom Design Mounting Brackets

Tailored mounting solutions for seamless integration into existing systems.

Cantilever Frame Design

Allows for easier installation and maintenance in certain conveyor setups.

Full Sheet Guarding

Enhances safety by providing comprehensive protection around moving parts.

Belt Tracking Limit Switches

Ensures proper belt alignment and prevents potential damage or misalignment.

Rotation Sensor

Monitors belt movement, providing operational feedback and enhancing safety.

Permanent Magnetic Extension

Extends the magnetic field for improved separation efficiency.

Magnetic System Options

Single Pole: Standard configuration for general applications.
Tri-Pole: Provides advanced separation capabilities for challenging materials.

Special Paint Coatings

Custom finishes are available for specific environmental or aesthetic requirements.