Hengji Magnetic Separation Solutions for Construction & Aggregates Industry
Hengji delivers precision magnetic separation technology engineered for the ultra-pure requirements of lithium battery, photovoltaic, hydrogen fuel cell, and rare earth industries. Our advanced systems remove sub-micron metallic impurities, enhance material performance, and ensure production scalability – enabling next-generation energy technologies while maximizing yield and ROI.
Core Applications & Performance
1. Lithium Battery Raw Material Purification
• Equipment : QCG Series Wet Drum Magnetic Separators (e.g. QCG-1050×1000)
• Key Benefits:
→ Reduces Fe₂O₃ impurities from ≤50ppm to ≤5ppm in spodumene/lepidolite
→ Increases first-cycle Coulombic efficiency ≥95%
→ 10-stage separation achieves ≥98% recovery (Doc #6)
II. Photovoltaic Silicon Purification
• Equipment : GTC High-Gradient Plate Separators (e.g. GTC-18000)
• Key Benefits :
→ Removes 0.1-5μm metal particles (Si purity ≥99.9999%)
→ Eliminates LID degradation (+0.8% PV conversion efficiency)
→ 18,000 Gauss intensity with 40% lower energy consumption (Doc #12)
III. Fuel Cell Catalyst Purification
• Equipment: DCZ Series Electromagnetic Separators (e.g. DCZ-200)
• Key Benefits:
→ Reduces Fe/Ni impurities to ≤1ppm in Pt/C catalysts
→ Boosts catalyst activity by 30% | Extends stack life 2+ years
→ Auto-overheat protection prevents material degradation (Doc #105)
IV. Rare Earth Magnetic Powder Classification
• Equipment : CTS Downstream Wet Drum Separators
• Key Benefits :
→ Grades NdFeB powder at ±5% magnetic intensity tolerance
→ Eliminates sintering segregation (99.3% yield rate)
Proven Results Across Minerals
• Ningxia Polysilicon Manufacturer :
▫ Challenge: 80ppb iron contamination causing 8%/year LID degradation
▫ Solution: GTC-18000 with N₂ inertion system (Doc #97)
• Results:
→ Fe ≤0.5ppb | Cell efficiency 22.6%
→ ≤6.5% degradation over 25 years | TÜV certified
→ +$230M annual export revenue
• Guangdong Fuel Cell Catalyst Line :
▫ Challenge: Imported separator capacity <1t/h bottlenecking production
▫ Solution: Custom DCZ-350 with dual-stage cooling (Doc #106)
▫ Results:
→ Fe/Ni ≤0.8ppm | 5t/h processing capacity
→ 400% production increase | Supplies Toyota/Hyundai
→ 60% cost savings vs. imported systems