Electro Demagnetizing Coils

Enquiry Form

Looking to order or have a query about the product? Fill out the form and our team will reach out to you!

An Electro-Demagnetizing Coil (EDC) is a device used to demagnetize ferromagnetic materials, such as steel, iron, and nickel, by generating a controlled magnetic field. It’s commonly used in industries like:

Metal fabrication

Aerospace

Automotive

Medical Equipment Manufacturing

Magnetic Separation and recycling

BJ Magnets demagnetizing coils reduce magnetization in the remnant of sludge to a significant extent, such that the remained strongly magnetized particles, form magnetic agglomerates of several viscous particles or more under quiescent conditions. In which case, provided solutions are to maintain the optimal viscosity of the medium flowing of the magnetized products. The use of this type of magnetic separation solution in viscous mineral recovery is of utmost importance in terms of inducing residual magnetisation on particles.

BJ Magnets demagnetizing coils provide effective demagnetization while meeting safety and industry standards.

We offer higher power with lower frequency demagnetizers for difficult applications. Let it at this occasion be noted that smaller coils may have a stronger magnetic field than larger coils; particularly suitable for low alloy with high permeability, such as oblong steel parts.

The variety of model sizes we offer ensures enough versatility to handle whatever needs you may have.

PRODUCTS

BJ Magnets Demagnetising Coils are designed to provide demagnetisation of natural magnetite or magnetized slurries that flow through pipelines during the recovery process in the minerals processing industry where sludges containing magnetic solids are targeted to be deslimed after discharge from magnetic separators, thus regulating the magnetic viscosities of mineral streams to acceptable downstream processing standards – In respect of:

Principle:

The EDC consists of a coil of wire (usually copper) wrapped around a core.

When an electric current flows through the coil, a magnetic field is generated.

The magnetic field induces an opposite polarity in the ferromagnetic material, gradually reducing its magnetization.

Process:

The ferromagnetic material is placed within the coil.

The EDC is activated, and the magnetic field is applied.

The magnetic field is gradually reduced, allowing the material to demagnetize.

The process is repeated in a controlled sequence to ensure complete demagnetization.

Apart effective demagnetization of ferromagnetic materials, BJ Magnets Demagnetizing coils reduce residual magnetism, improve material properties (such as reducing magnetic interference), enhances safety (e.g., prevents accidental magnetization), increases efficiency in manufacturing and processing.

By using BJ Magnets Electro-Demagnetizing Coil, you can efficiently demagnetize ferromagnetic materials, and improve their properties, safety, as well as overall quality.

APPLICABLE REQUIREMENTS

BJ Magnets Electro-Demagnetizing Coil have field strengths that range from 230 to 1,200 gauss and are designed to operate either in a continuous [C] or intermittent (I) mode in a dry environment. Units are available for operation in ‘non-dry’ conditions. Intermittent types are rated for 25% duty with a maximum ‘on’ time for 5 minutes. BJ Magnets Electro-Demagnetizing Coil are currently used worldwide and are available in a wide variety of sizes, shapes, field strengths, with options to fit your needs. They can be used for:

BJ Magnets Demagnetizing coils are also manufactured in different versions and according to the customer demand.

Demagnetizing tools and equipment

Removing residual magnetism from materials

Reducing magnetic interference in sensitive equipment

Preparing materials for welding or machining

Ensuring compliance with industry standards (e.g., aerospace, medical

Our Sizes Guide

BJ Magnets Demagnetizing coils come with safety features such as overheat protection, electrical insulation, and operator safety precautions. Their power supply in terms of Voltage and current requirements vary depending on the coil size and material. The temperature range is typically -20°C to 100°C (-4°F to 212°F), but can nevertheless be customized for extreme temperatures. Sizes and shapes can also be designed to fit various sizes and shapes of materials – relatively to magnetic field strength; which depends on the material’s magnetic properties and the desired level of demagnetization. The demagnetization cycle controls sequence of magnetic field reduction to ensure complete demagnetization.

Features

BJ Magnets Demagnetizing coils are designed and manufactured with features to enhance the performance, safety, and usability, making it a reliable solution for demagnetization applications across various industries:

Adjustable Magnetic Field: Control over magnetic field strength and direction.
Multi-Turn Coils: Increased magnetic field strength and uniformity.
Water Cooling: Improved heat dissipation for high-power applications.
Insulation and Protection: Electrical insulation, thermal protection, and mechanical robustness.
Digital Control: Precise control over demagnetization cycles and magnetic field strength.
Automatic Demagnetization: Pre-programmed demagnetization cycles for ease of use.
Manual Override: Option for manual control and adjustment.
Safety Interlocks: Protection against accidental start-up or incorrect operation.
Remote Control: Option for remote operation and monitoring.
Data Logging: Recording of demagnetization cycles and parameters.
Compact Design: Space-saving design for integration into production lines.
Customizable: Tailored to specific applications, materials, and industry requirements.
High-Efficiency: Optimized for energy efficiency and reduced heat generation.
Low Maintenance: Easy maintenance and repair access, with minimal downtime.
Certifications and Compliance: Meets relevant industry standards and regulations

Specifications

The magnetizing field must fully overcome the residual magnetism in your parts to be effective – which parts should be slowly fed through the demagnetizer and completely out of the magnetic field before it is removed or the coil shut-off. Moreso, parts must be demagnetized in an East-West direction to minimize the effect of the Earth’s field, and in an area free of magnetic interference.

The following specifications would help ensure that our EDC meets your required performance, safety, and compatibility standards for your specific applications relevant to your industry.

Coil Dimensions: Inner diameter, outer diameter, length, and shape.
Magnetic Field Strength: Measured in Gauss (G) or Tesla (T), indicating the coil’s magnetic power.
Frequency: AC, DC, or pulse frequency, measured in Hertz (Hz).
Power Supply: Voltage (V), current (A), and power (W) requirements.
Demagnetization Cycle: Time, waveform, and sequence of magnetic field reduction.
Material Compatibility: Types of ferromagnetic materials the EDC can demagnetize.
Protection Class: IP (Ingress Protection) rating for dust and water resistance.
Connectors and Cabling: Type and size of electrical connectors and cables.
Safety Features: Overheat protection, electrical insulation, and operator safety features.

BJ Magnets Electromagnetic Demagnetizing Coils are also designed for high and low rated heat rise capacity, to give many years of maintenance–free service for demagnetizing natural magnetite that is set to flow through the processing pipelines. The unit is installed to provide free fall of the magnetic pulp through a flexible rubber hose through the coil core. It is advisable that the coil should be close enough to the point of discharge of the magnetized sludge to reduce the speed of the pulp through the coil.

Either Alternating Current (AC) or Direct Current (DC) demagnetizing coils are offered – Thus, in the purpose of decreasing the excess of magnetic field found in goods made from ferrous materials or NDT (Non-Destructive Testing). To the bargain, we also offer Pulse coils and Permanent magnet demagnetizers to best suit your need.

BJ Magnets Electromagnetic Demagnetizing Coils are also designed for high and low rated heat rise capacity, to give many years of maintenance–free service for demagnetizing natural magnetite that is set to flow through the processing pipelines. The unit is installed to provide free fall of the magnetic pulp through a flexible rubber hose through the coil core. It is advisable that, the coil should be close enough to the point of discharge of the magnetized sludge to reduce the speed of the pulp through the coil.

Our Range (is not limited to…)

BJ Magnets is ISO 9001:2015 certified company by SABS for Quality Management System. All our Magnetic Separator Equipment are designed, manufactured and supplied under observation of the principles of the HACCP International Food Safety Standard 0909MAGSEP 1-2010. Moreso, to the bargain of their effectiveness, the internal and external aspect of the magnetic equipment is produced according to the food health and safety standard in terms of the building materials; which is austenitic stainless steel of grade 304 or 316. Thereof upon completion, a certificate of Factory Acceptance Test (FAT) which is valid for 12 months is issued; in which case the equipment shall not be subjected to the anual validation.