Magnetic Drum Selection & Customization

Magnetic Drum Separator for Continuous Ferrous Removal

Choose the drum from the real process: dry or wet material, feed method, particle size, throughput conditions, target ferrous material, and discharge layout. OSENC reviews the application before defining the magnetic circuit, drum interface, drive, wear protection, and acceptance method.

Send Material and Layout Check Selection Inputs

Family-level configuration Dry, conveyor, wet, and OEM routes are not treated as one universal machine.

Condition-based performance Gauss, capacity, and recovery require defined measurement and feed conditions.

RFQ-ready engineering Drawing, process, discharge, testing, and maintenance inputs are reviewed together.

Magnetic drum separator operating in an industrial bulk material line

Quick Answer: Start With the Material Path

A magnetic drum uses a rotating shell and a magnetic field to carry ferrous material away from the main product stream. The correct equipment is decided by how material reaches the drum and how each fraction must discharge.

Dry free-fall material

Review a housed dry drum when powder, granules, cullet, scrap, sand, or similar bulk material enters from a chute or feeder.

Décharge du convoyeur

Review a magnetic head drum or pulley when the belt itself must carry captured ferrous material beyond the normal discharge point.

Wet or slurry process

Use a wet-drum route only after reviewing slurry concentration, particle liberation, tank arrangement, flow direction, and water handling.

OEM machine component

Define the shaft, bearings, runout, load, speed, magnetic arc, test points, and machine interface from the buyer’s drawing.

Magnetic Drum Applications and Operating Conditions

Review magnetic drum configurations by material condition, feed method, installation position, and discharge requirements.

Wet magnetic drum handling slurry in an industrial process line

Choose the Magnetic Drum Family Before Discussing Strength

Magnetic strength is only one input. Feed stability, working distance, material behavior, discharge geometry, wear, and acceptance method often decide whether the equipment will work on the actual line.

Process condition	First equipment route	Critical inputs	Risque principal
Dry, free-flowing bulk material	Housed dry magnetic drum	Particle size, moisture, bulk density, feed width, throughput, iron size, splitter position	Uneven feed or excessive burden hides ferrous particles
Material leaving a conveyor	Magnetic head drum or pulley	Belt width, speed, pulley interface, material depth, discharge trajectory, available splitter space	Incorrect belt geometry causes product carryover or poor iron release
Slurry or wet mineral process	Wet magnetic drum system	Solids concentration, particle liberation, flow direction, tank geometry, wash water, corrosion and wear	A dry-drum layout cannot simply be submerged and expected to work
Buyer-built equipment	OEM magnetic drum component	Drawing, shaft, bearing, speed, load, magnetic arc, shell, runout and test method	A magnetically strong drum can still fail mechanically or integrate badly

Diagram showing feed, magnetic capture, non-magnetic discharge and ferrous discharge around a magnetic drum

How a Magnetic Drum Works

Controlled feed: material must enter across the useful drum width without uncontrolled surges.
Magnetic capture: ferrous particles are held while the main non-magnetic fraction follows its normal trajectory.
Rotating transport: the shell carries captured material beyond the active separation zone.
Separate discharge: the splitter and release point determine product carryover and iron collection.
Continuous operation: the process does not require manual wiping of the drum during normal separation.

What Actually Controls Separation?

A catalog gauss number cannot answer these questions. The field must interact with the real material at the real working distance and speed.

Magnetic circuit and field depth

Ferrite, rare-earth, permanent, or electromagnetic systems create different field shapes. The project must define where the field is measured.

Distribution de l'alimentation

A full-width, stable feed exposes particles consistently. Surges and dead zones create missed contamination.

Particle liberation

Iron locked inside non-magnetic material may not separate until crushing, grinding, or another liberation step occurs.

Burden or slurry condition

Deep dry burden, moisture, caking, viscosity, and solids concentration change particle movement and working distance.

Drum speed

Speed changes retention time, centrifugal force, material trajectory, discharge position, and mechanical load.

Splitter and discharge geometry

A poor splitter position can lose clean product or return captured iron to the main stream.

Configuration Items OSENC Reviews

Exact dimensions and performance values are not published without a defined project. This prevents the usual human ritual of comparing numbers stripped from their test conditions.

Article	Configuration route	What must be confirmed
Equipment family	Dry housed drum, head drum, wet drum, or OEM component	Material path, process state, installation and discharge
Magnetic system	Selected after contaminant and working-distance review	Target material, size, concentration, temperature and measurement method
Drum and working width	Drawing-controlled	Feed width, throughput conditions, shaft, bearings, load and available space
Shell, housing and wear protection	Selected after abrasion and corrosion review	Material hardness, impact, moisture, chemistry, cleaning and expected wear
Drive and speed	Selected after mechanical and process review	Duty, torque, speed range, power supply, controls and guarding
Field measurement	Agreed project test	Probe, points, gap, temperature, tolerance and reporting format
Capacity or recovery	Calculated or tested for defined conditions	Feed, burden/slurry, sampling, contaminant, target and repeat method
Acceptance package	Agreed before order release	Drawing, dimensions, runout, field map, no-load test, trial and documents

Suitable Starting Conditions

Continuous removal or recovery of ferrous material
Dry bulk material with controlled feeding
Conveyor discharge where a magnetic head drum fits the layout
Wet or slurry duty using a purpose-designed wet drum route
OEM machinery requiring a drawing-controlled magnetic drum
Lines that can provide separate product and ferrous discharge paths

Not Suitable Without Further Engineering

Heavy caking or sticky material around a standard dry drum
Very deep, uncontrolled material burden
Non-ferrous metal separation as the only objective
Guaranteed stainless-steel recovery without sample testing
Fine ferrous particles locked inside unliberated material
Published capacity or recovery targets without a defined test method

Dry and Wet Drums Are Different Systems

A wet drum is not a dry drum with water added. The tank, feed, magnetic zone, solids concentration, flow direction, discharge, sealing, corrosion, wear, and water balance must work as one process.

Do Not Choose From the Photo Alone

Two drums can look similar and perform differently. A useful review needs the material, process flow, target fraction, installation envelope, and acceptance method.

Wet magnetic drum separator showing the drum body, drive system, and slurry discharge area

Testing and Acceptance Route

Define acceptance before production. Otherwise the supplier and buyer may test different things and both claim to be correct, a remarkably durable industrial tradition.

STEP 01

Lock the application

Confirm material, feed, throughput conditions, contaminant, target and layout.

STEP 02

Approve the drawing

Confirm interfaces, drum direction, working width, discharge and maintenance access.

STEP 03

Define equipment checks

Set dimensional, runout, rotation, guarding and no-load requirements.

STEP 04

Define magnetic checks

Set instrument, points, gap, temperature, tolerance and report format.

STEP 05

Run material validation

Use feed and an agreed sampling method when process results matter.

STEP 06

Release the order

Approve the configuration, documents, packing and project responsibilities.

STEP 07

Verify installation

Check feed distribution, splitter position, rotation and safe access on the line.

STEP 08

Review operating data

Adjust only against measured process results, not assumptions from a brochure.

Magnetic drum selection inputs covering material, feed, throughput, interface and acceptance method

What to Send for a Useful Quotation

Matériau : name, process, dry/wet condition, particle size, moisture or slurry data, bulk density, abrasion and temperature.
Ferrous target: type, size, shape, concentration, and whether the goal is equipment protection, purification, or recovery.
Flow: normal and peak throughput, feed width, burden depth, belt speed, flow rate, or solids concentration.
Layout: photos, drawing, inlet and outlet, drum position, discharge space, access and utilities.
Acceptance: field test points, dimensional checks, trial method, residual or recovery target, and required documents.

Questions fréquemment posées

What is the difference between a magnetic drum and a magnetic head pulley?

A magnetic drum can be supplied as a separate separator, a housed unit, or an OEM component. A magnetic head pulley replaces the discharge pulley of a conveyor. The correct choice depends on the feed path, belt layout, burden depth, discharge space, and target ferrous material.

Can one magnetic drum handle both dry material and slurry?

No universal drum should be assumed suitable for both. Dry and wet systems use different feed, tank, discharge, sealing, wear, and process-control arrangements. OSENC reviews the actual process before defining the equipment family.

Does a higher gauss number guarantee better separation?

No. A gauss value is meaningful only with a defined measurement point, probe orientation, temperature, and magnetic circuit. Separation also depends on field gradient, working distance, feed uniformity, particle liberation, drum speed, and discharge geometry.

What information is needed to size a magnetic drum?

Send the material name, dry or wet condition, particle-size range, moisture or slurry data, bulk density, normal and peak throughput, feed method, target ferrous material, installation drawing, available space, and required acceptance method.

Can a magnetic drum remove stainless steel?

Some stainless steels are weakly magnetic, while others are effectively non-magnetic in the process. Recovery cannot be promised from the material name alone. Provide samples for a controlled test.

How should magnetic drum performance be accepted?

The order should define dimensions, runout, rotation direction, magnetic measurement points, instrument, tolerance, no-load checks, and any material trial. Capacity or recovery targets require an agreed feed and sampling method.

When is a magnetic drum the wrong choice?

A standard dry drum is a poor choice for heavy caking, thick mud, uncontrolled deep burden, non-ferrous recovery alone, or particles locked inside non-magnetic material. Another separator or upstream conditioning step may be required.

Related OSENC Resources

Use the product page for procurement. Use the guides for working principle and early-stage selection.

Send the Material and Layout Before Choosing the Drum

Include the process state, particle size, throughput conditions, ferrous target, installation drawing, discharge space, and required test method.

Request a Magnetic Drum Review