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● Market size: Global construction & demolition (C&D) waste surpassed 3.0 B t/year; magnetic equipment segment is growing at 7 % CAGR through 2028.
● Policy push: EU Waste Framework Directive & China’s “Zero-Waste City” pilots mandate ≥ 70 % recycling rate by 2030.
● Material focus: Reinforced concrete, mixed demolition debris, asphalt, brick, wood, non-ferrous metals—magnetic separation is the first mechanical step to secure clean aggregates.
“Removing 1 kg of re-bar scrap per tonne of concrete feed increases recycled aggregate value by USD 2.3 and cuts crusher wear cost by 15 %.”
High-intensity separators recover > 95 % of ferrous tramp metal, protecting downstream crushers, screens and optical sorters while supplying premium scrap for re-melt.
Application | Separator Type | Key Specs | Feed State | Share | Reference Case |
Mobile C&D plant pre-screening | Over-belt Permanent Magnet | 0.9 T, belt width 1 000 mm | 0–300 mm crushed concrete | 40 % | SBM REMAX 400 mobile line |
Concrete recycling plant | Magnetic Roller | 1.2 T, dia. 1 000 mm | 0–40 mm aggregate | 25 % | Holcim Geocycle 2 Mt facility |
Brick & tile waste | Cross-belt Self-Cleaning | 0.7 T, belt speed 2 m/s | 0–60 mm brick rubble | 15 % | Wienerberger Austria |
Asphalt milling recovery | Pulley Magnet + Eddy-Current | Fe > 98 %, Al/Cu > 95 % | 0–20 mm RAP | 10 % | Colas France |
Wood-chip fuel purification | Magnetic Head Pulley | 0.5 T, stainless shell | 0–100 mm biomass | 10 % | Stora Enso Nordic |
● High tramp steel entanglement → 3-D sensor + AI-controlled hydraulic pusher, reducing belt stoppages by 60 %.
● Abrasive dust & moisture → Fully-sealed IP66 drum with tungsten-carbide wear shell, service life > 15 000 h.
● Lightweight non-ferrous in RAP → Combination drum magnet + eccentric ECS, recovering Al/Cu while rejecting aggregate loss < 2 %.
● EU: EN 12620 (aggregates), CE marking, Machinery Directive 2006/42/EC
● USA: ASTM D1241, OSHA 1926 Subpart O
● Environmental: Noise ≤ 80 dB(A) @ 10 m, dust emission < 10 mg/m³
● Capacity: 1 500 units/year for suspended magnetic separator & magentic roller ; stock belts 800–1 600 mm.
● Lead time: Standard over-belt magnets 3–4 weeks; mobile skid-mounted systems 6–8 weeks.
● QC: Gauss-meter traceability, 48 h continuous-load test, optional ATEX certification.
● Added value: Wear-liner exchange program, remote vibration & temperature IoT monitoring.
A 2 Mt/year C&D recycling plant in Germany replaced three semi-automatic suspended plate magnets with a automatic suspended magnetic separator.
● Ferrous removal efficiency rose from 87 % → 98 %.
● Crusher blow-bar replacement interval extended from 650 → 950 h, saving USD 180 k/year.
● Recovered scrap value added USD 1.1 M annually; project retrofitted with zero downtime in 72 h.