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VIEW PRODUCTSWhat Type of Eddy Current Separator Is Best for Recovering Aluminum from Scrap?
Nov 10,2026
The eddy current separator market offers two rotor architectures with materially different performance profiles on aluminum recovery. Concentric designs deliver economic efficiency on coarse streams. Eccentric designs capture fine aluminum that concentric units release to reject. Selecting between them requires measuring the particle size distribution of your specific scrap feed.
Concentric Rotor Performance
Concentric rotors position the magnetic assembly at the center of the shell, generating a field around the entire pulley circumference. On aluminum above 20 mm, recovery reaches 93–97%—identical to eccentric performance at 20–30% lower purchase cost. The broad field tolerates feed variation and supports throughputs up to 25 t/h. For operations processing whole cans, large extrusions, or cast aluminum above the 20 mm threshold, the concentric design delivers equivalent recovery with simpler maintenance and lower capital outlay.
Eccentric Rotor Advantages on Fines
Shredded aluminum, machining turnings, and liberated packaging fragments often report below 15 mm. On 5–10 mm feed, concentric recovery falls to 65–78%. Eccentric rotors concentrate magnetic energy at the discharge point, lifting recovery to 80–90%. The higher surface flux density ejects particles down to 3–5 mm. The 10–15 point recovery advantage typically covers the eccentric premium within the first year on fine aluminum streams.
Eccentric geometry also extends belt life. Concentric fields hold stray ferrous particles against the belt, inducing heat damage over time. Eccentric designs localize the field, allowing ferrous release outside the magnetic zone and reducing belt replacement frequency.
Integration and Verification
Ferrous removal is mandatory upstream of any eddy current separator. Screening and monolayer feed control complete the preparation requirements. For line-level configurations, reference the Eddy Current Separator and Eddy Current Separator Automatic Plastic And Non Ferrous Metal Sorting Machine product pages, the Scrap Metal Recycling Production Line and Waste Recycling Production Line solution pages, and the Why Every Modern Recycling Plant Needs A High Performance Eddy Current Separator technical guide. Upstream shredding and screening references include the Double Shaft Shredder Machine, Single Shaft Shredder, Crusher, and Vibrating Screen Machine. Maintenance planning should reference the Spare Parts and Twin Shaft Shredder Maintenance Guide Extend Service Life Cut Operational Cost.
A material test with representative aluminum scrap remains the only reliable basis for recovery and purity expectations. HUATAO provides recycling equipment and shredder-related solutions; specifications should be confirmed against actual feedstock through direct technical consultation.
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Email: marketing@huataogroup.com
Tel/WeChat/WhatsApp: 008613383116640
Website: www.huataoshredder.com
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