Language
● Market size: Global engineering-plastics demand reached 22 Mt in 2023 and is growing at ~4 % CAGR; automotive & E&E sectors account for 60 % of volume.
● Key trend: Down-stream specifications now limit metallic contamination to < 50 ppm for safety-critical parts and < 10 ppm for high-voltage connectors.
● Drivers: Miniaturization, electrification, and tighter flammability standards (UL 94, IEC 60695).
“Every 10 ppm reduction in Fe contamination raises CTI (Comparative Tracking Index) by 25–40 V, enabling 800-V EV architectures.”
Magnetic separators integrated at compounding, extrusion, and recycling steps cut metallic inclusions before molding, reducing scrap and warranty claims.
Application | Separator Type | Key Specs | Feed State | Share | Reference Case |
PA66 GF30 compounding | The High Intensity Magnetic Roller Separator | 1.2 T surface, < 30 ppm Fe | Pellet & regrind mix | 35 % | BASF 50 kt line |
PC/ABS flame-retardant | Automatic Drawer Magnetic Separator | 1.0 T, continuous self-clean | Pellets | 25 % | Covestro 30 kt line |
PEEK medical grade | Automatic Liquid Trap Magnet | 1.3 T, sanitary tri-clamp | Melt < 400 °C | 15 % | Victrex 5 kt clean-room |
Post-consumer rPET | Automatic Rotary Magnetic Separator | Fe < 20 ppm, PET purity > 99 % | Flake | 25 % | Indorama 100 kt plant |
● High-temperature melt exposure→ Samarium-cobalt (Sm₂Co₁₇) sleeves retain > 95 % flux at 350 °C.
● Glass-fiber abrasion → Replaceable tungsten-carbide wear sleeves extend matrix life 3×.
● Ferrous fines < 30 µm → Pulsed high-gradient grid boosts capture efficiency to 99.9 %.
● Automotive: IATF 16949, PPAP Level 3, VDA 6.3 process audit.
● Medical: ISO 13485, USP Class VI extractables.
● Environmental: RoHS 2.0, REACH 2023, FDA 21 CFR 177 for food-contact grades.
● Capacity: 1200 magnetic separators/year; rare-earth grids in 48 h stock.
● Lead time: Standard drawer/rotary units 3–4 weeks; high-temp specials 6 weeks.
● QC: In-line metal detectors verify < 1 ppm residual after separation.
● Added value: CFD-based residence-time studies, HACCP-compliant CIP protocols.
A tier-1 automotive supplier switched to 1.2 T drawer magnets on its PA66 GF30 line.
● Fe dropped from 80 ppm → 18 ppm.
● CTI improved from 400 V → 475 V, passing 800-V connector specs.
● Scrap rate fell from 2.3 % → 0.9 %, saving USD 0.55 M/year.
● Line passed OEM PPAP audit in 8 weeks.