Drum Magnetic Separator Description:

The GREENSORT Drum magnetic separator is a high-performance permanent magnetic separation(Electromagnet drum magnetic separator also available) equipment, It is widely used for ferrous metal removal from shredded materials such as auto scrap, steel scrap, incinerator bottom ash, construction waste, WEEE and household appliance fragments.

Different from conventional magnetic drums, this model adopts an upward attraction design. The magnetic system is installed above the material flow, pulling ferrous metals upward from the material bed to separate ferrous contaminants from non-ferrous metals (copper, aluminium) and non-metallic materials. It serves as the critical pre-treatment unit of complete metal recycling lines.

Typical Applications:

1) Shredded auto scrap & heavy steel scrap processing

2) Municipal solid waste incinerator bottom ash metal recovery

3) Construction waste & steel slag recycling

4) WEEE and waste home appliance shredding lines

5) Pre-iron removal for copper-aluminium and aluminium-plastic separation

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Main Structure

1. Drum Shell Wear-resistant stainless steel shell with high-grade NdFeB permanent magnet assembly inside. Optimized magnetic angle ensures strong upward attraction and smooth self-discharge of ferrous materials. The shell surface is treated for anti-abrasion to withstand impact from coarse shredded materials.

2. Drive Assembly Consists of three-phase asynchronous motor and K-series helical-bevel gear reducer. High torque and strong shock resistance for heavy-duty operation in recycling plants. Rotating speed can be adjusted to match conveyor speed.

3. Steel Frame Integrated welded steel support frame with adjustable mounting bases and maintenance platforms. Modular design allows convenient hoisting and direct installation above belt conveyors.

4. Protective Housing Yellow safety guards for transmission components to prevent collision damage from bulk materials.

5. Diverting Mechanism Ferrous metals stuck to the drum surface rotate away from the magnetic zone, lose magnetic attraction and fall off automatically for separate collection.

Working Principle:

Materials travel on the belt conveyor and pass underneath the magnetic drum. The permanent magnet system generates an upward magnetic field. Ferrous scraps (iron, steel) are attracted upward and adhere to the rotating drum shell. Non-ferrous metals (copper, aluminium), plastics and minerals are unaffected by magnetism and continue moving forward to the downstream eddy current separator. As the drum rotates, captured ferrous materials move to the non-magnetic area and drop down, achieving continuous separation of ferrous and non-ferrous fractions.

Features:

Efficient separation for thick material layers Outperforms suspended magnetic separators on deep material beds, capable of extracting ferrous scraps buried at the bottom of thick shredded material flows.

Protect downstream eddy current separators Removes ferrous fragments in advance to avoid impact damage and abrasion to eddy current rotors, greatly lowering maintenance costs of core equipment.

Low operational cost Permanent magnet design; only the drive motor consumes power during operation. Premium magnet assembly maintains stable magnetic strength for 8–12 years.

Robust heavy-duty construction Specially engineered for harsh solid waste recycling conditions, featuring thickened wear-resistant shell and heavy-load drive system.

Easy system integration Can be directly installed above belt conveyors and combined with eddy current separators to form complete non-ferrous metal recovery production lines.

Technical Specification:

Selection Parameters for Reference:

1) Effective working width: matched to belt conveyor width

Magnet can process 0-150mm mixed material which have ferrous metal. And the good vibrating feeding and the matched belt conveyor transport material out help getting the good performance of magnet separation.

2)  Drum diameter: selected according to hourly throughput and material particle size

The main technical parameters of drum magnetic separator are Diameter of drum and the length of drum, This two factors decided the material thooughput during his work. So consult my engineer to get the right information when you are going to buy Drum magnetic separator to process your ferrous metals. At present, we can produce big model drum magnetic separator to meet your high ferrous feeding capacity like more than 100 Tons per hour, our max GMS(E)-1830 model can match 6000HP hammer mill shredder.

3) Magnetic field strength: high magnetic intensity for ferrous metal processing

GREENSORT choose the high grade Nedymium magnet material(NdFeB magnet) to make the drum magnetic separator. which will bring the stable magnet intensity, and the magnet intensity lost is less compared other supplier' magnet. The magnetic intensity also decided your performance of the ferrous metal processing.  And GREENSORT designed multiple magnet poles can help to clean the ferrous metals to remove some contamination during his turning action.

4) Maintenance cost: Two layers shell for easy maintenance and lower cost.

Choose two layer shells Drum magnetic separator to make the maintenance easier. As when the outside shell damaged, you can replace it by another piece easy and quickly. GREENSORT two stailess steel shells can well protect the inner drum magnet to keep it can be used for a long time.

5)  Processing capacity: specified by production demand

6) Mounting height: adjustable clearance between drum bottom and material surface to guarantee separation efficiency

7) Scientific magnet design: increase the hign recovery and high purity.

Our two stage drum magnetic separator are main equipment for ferrous metal recycling plant, which can get high metal recovery like 99%, and it high purity can be 95-98%-The recovered ferrous metal density can be 1.2-1.4t/m3.

Cases: