Magnetic Drum/Roller for Magnetic Separators

Product Specifications

Technical details and manufacturing context for Magnetic Drum/Roller

Definition

The magnetic drum or roller is the core functional component of a magnetic separator system. It consists of a cylindrical shell that rotates around a stationary magnetic assembly, creating a magnetic field on its surface. As material flows over or under the rotating drum, ferrous particles are attracted and held to the drum surface, while non-magnetic materials continue their trajectory, achieving separation. The drum continuously rotates, carrying captured ferrous materials out of the material stream to a discharge point where the magnetic field weakens or ceases, allowing for their release and collection.

This component is available in a range of configurations to suit different separation tasks. Drum diameters typically range from 200 to 1200 mm, and widths from 300 to 3000 mm, matching feed width for even material distribution. Magnetic field strength can vary from 1000 to 12000 Gauss, with higher values for fine or weakly magnetic particles. Rotational speed is adjustable between 10 and 100 rpm, affecting separation efficiency and throughput. Processing capacity ranges from 1 to 100 tons per hour, depending on material density and drum size. Separation precision is typically ±0.5% non-ferrous content in the concentrate. Operating temperature limits are -20 to 80°C; outside this range may demagnetize or damage components. Ingress protection ratings from IP54 to IP65 (per IEC 60529) are available for dusty or wet environments. Drum surface hardness is HRC 50-60 for wear resistance. Drum material options include SS304 or SS316 (per ASTM A240), with SS316 for corrosive environments. Weight ranges from 500 to 5000 kg, affecting installation and structural support.

When selecting a magnetic drum or roller, verify model-specific values and standards with the legal manufacturer or supplier. Confirm that the chosen unit meets your process requirements, including material characteristics, feed rate, and environmental conditions. Regular inspection of the drum surface for wear and the magnetic assembly for integrity is essential to maintain separation performance.

Working Principle

The drum rotates around a fixed, multi-pole magnetic circuit (often made of permanent magnets or electromagnets). This creates a strong, alternating magnetic field on the drum's outer surface. When a mixture of materials passes by this surface, ferromagnetic particles (like iron or steel) are magnetically attracted and adhere to the drum. The rotation then transports these captured particles away from the main material flow. Separation occurs as non-magnetic materials are unaffected by the field and fall or continue moving based on gravity and inertia.

Common Materials

Stainless Steel (Shell), Neodymium Iron Boron (NdFeB) Magnets or Ferrite Magnets (Core), Mild Steel (Internal Structure/Shaft)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Drum Diameter	200–1200 mm	Determines capacity and magnetic field depth
Drum Width	300–3000 mm	Matches feed width for even material distribution
Magnetic Field Strength	1000–12000 Gs	Higher for fine or weakly magnetic particles
Rotational Speed	10–100 rpm	Affects separation efficiency and throughput
Processing Capacity	1–100 t/h	Depends on material density and drum size
Separation Precision	±0.5 %	Percentage of non-ferrous material in concentrate
Operating Temperature	-20–80 °C	Outside range may demagnetize or damage components
Ingress Protection	IP54–IP65	Higher for dusty or wet environmentsIEC 60529
Drum Surface Hardness	HRC 50–60	Wear resistance for abrasive materials
Drum Material	SS304/SS316	SS316 for corrosive environmentsASTM A240
Weight	500–5000 kg	Affects installation and structural support

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Drum Shell/Casing Part
The outer cylindrical body that rotates, providing the surface to which ferrous materials adhere. Often made of non-magnetic stainless steel to allow the magnetic field to penetrate.

Material: Stainless Steel (304/316)
Magnetic Assembly/Core Part
The stationary internal structure containing an array of permanent magnets or electromagnetic coils that generates the magnetic field.

Material: Neodymium Magnets (NdFeB) / Ceramic Ferrite Magnets / Electrical Windings (for electromagnets)
Shaft and Bearings
The central shaft supports the drum shell and allows it to rotate smoothly on bearings around the fixed magnetic core.

Material: Carbon Steel / Stainless Steel
Drive System (Motor, Gearbox)
Provides the torque to rotate the drum at the required speed.

Material: Various (Steel, Aluminum, Copper)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Magnetic Drum/Roller.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Magnetic Separator

View system integration details

Manufacturers of Magnetic Drum/Roller

Manufacturer profiles associated with Magnetic Drum/Roller.

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Frequently Asked Questions

What is the typical range of drum diameter and width?

According to directory data, drum diameter typically ranges from 200 to 1200 mm, and width from 300 to 3000 mm. These values must be confirmed for the specific model and application with the manufacturer.

What magnetic field strengths are available?

Magnetic field strength can range from 1000 to 12000 Gauss. Higher strengths are used for fine or weakly magnetic particles. The exact value depends on the magnet type and design, so verify with the supplier.

What are the operating temperature limits?

The operating temperature range is -20 to 80°C. Operating outside this range may demagnetize or damage components. Always check the manufacturer's specifications for your specific environment.

What materials are used for the drum shell?

The drum shell is typically made of stainless steel, with options SS304 or SS316 (per ASTM A240). SS316 is recommended for corrosive environments. Confirm the material grade with the supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 2 bar (typical), up to 5 bar with reinforced construction
flow rate:	0.5 to 500 m³/h depending on drum diameter and magnetic strength
temperature:	-20°C to 120°C (standard), up to 200°C with special seals/materials
slurry concentration:	Up to 40% solids by weight (varies with particle size and viscosity)

Magnetic Drum/Roller

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards