Magnetic Roll Separator
Magnetic roll separators are used to remove fine iron contamination from items like Silica sand, quartz, magnesite, feldspar, dolomite, food, chemicals, and ceramics, among others. A hopper, electromagnetic feeder with dimmer control, roll construction, driving motor, adjustable splitter plates, and control panel make up the magnetic separator.
A powerful rare earth magnetic roll serves as a head pulley in the rare earth roll separator. Ferrous particles stick to the belt when it passes over the rare-earth magnetic roll, while non-ferrous particles drop smoothly off the belt into the non-magnetic chute due to the centrifugal force.
Adjustable splitters are included to achieve the best magnetic/non-magnetic separation possible. The roll speed can be changed from 40 to 400 RPM, allowing for the use of centrifugal force in the separation of magnetic and non-magnetic materials.
Feed Hopper
This is non-magnetic stainless steel construction with a precisely controlled variable feed gate that has a positive shut–off and is designed for consistent feed with minimal bounce.
Roll Construction
Our machines’ magnetic rolls have been specifically designed and developed to provide an extremely strong magnetic field and gradient. The rare earth Nd-Fe-B rolls are made to extremely tight dimensional tolerances.
Magnetic Roll Separator
How Magnetic Roll Separators Work
The basic principle of a magnetic roll separator involves feeding material onto a moving belt that passes over a strong magnetic roll.The magnetic roll creates a powerful magnetic field that attracts magnetic particles, causing them to adhere to the belt or alter their trajectory. Non-magnetic particles are unaffected and follow a different path, allowing for separation.
Several types of magnetic roll separators exist, each designed for specific applications and materials.
Types and Applications
Material Feeding: The material to be separated is fed onto a conveyor belt, often using a vibratory or electromagnetic feeder to ensure even distribution.
Magnetic Field Exposure: The conveyor belt carries the material over a rotating magnetic roll. This roll generates a strong magnetic field.
Separation: Magnetic particles are attracted to the roll and held against the belt, while non-magnetic particles continue along their original trajectory.
Discharge: As the belt moves away from the magnetic field, the magnetic particles are released and collected separately. Splitter plates are often used to direct the separated materials into different chutes.
Magnetic roll separators are used in a variety of industries and applications, including:
Induced Roll Separators: These separators are designed to extract small magnetic particles from minerals, resulting in a high-purity final product. They are commonly used in mineral and ceramic processing industries to separate weakly magnetic or paramagnetic minerals from non-magnetic minerals.
Rare Earth Roll Magnetic Separators: These separators utilize high-strength neodymium magnets for enhanced separation efficiency. They are suitable for a wide range of materials, including minerals, and can be scaled for commercial applications.
Wet High-Intensity Magnetic Separators: These separators are designed for wet separation processes, utilizing strong magnetic induction to separate materials.
Perm-Roll Magnetic Separators: These separators can create a magnetic field over the belt and are used in various applications, including feldspar beneficiation.
Magnetic roll separators typically consist of several key components:
Key Components and Features
Mineral Processing: Separating valuable minerals from waste materials, such as in the processing of feldspar, silica sand, and rare earth ores.
Recycling: Removing ferrous metals from non-ferrous materials.
Food Processing: Removing tramp iron and other magnetic contaminants from food products.
Ceramics and Plastics: Purifying raw materials used in the production of ceramics and plastics.
Magnetic roll separators offer several advantages:
Benefits of Magnetic Roll Separators
Magnetic Roll: The core of the separator, containing strong permanent magnets, often made of rare earth materials like neodymium.
Conveyor Belt: A moving belt that carries the material through the magnetic field.
Feed System: A mechanism for evenly distributing the material onto the belt, such as a vibratory feeder or hopper.
Splitter Plates: Used to direct the separated materials into different collection points.
Drive System: A motor and gearbox to rotate the magnetic roll and move the conveyor belt.
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