Iron slag, a byproduct of steel production, contains residual iron that can be recovered for reuse. A specialized slag crusher plays a pivotal role in this process by crushing and separating metallic iron from slag aggregates. This system integrates jaw crushers, magnetic separators, and screening equipment to produce high-quality sand and aggregate for construction.
1. Primary Jaw Crusher: Coarse crushing of slag lumps (Feed size: ≤800mm; Output: 50-150mm)
2. Magnetic Separator: Overbelt/Drump-type (Field intensity: 8000-15000 Gauss)
3. Secondary Impact Crusher: Fine crushing (Capacity: 50-300t/h; Final product: 0-25mm)
4. Vibrating Screen: Multi-layer screening (Mesh sizes: 5mm, 10mm, 20mm)
| Equipment | Model | Power (kW) | Throughput (t/h) | Output Size |
|———–|——-|————|——————|————-|
| Jaw Crusher | JC120 | 90-110 | 100-200 | 50-150mm |
| Impact Crusher | PF1315 | 180-220 | 120-280 | ≤25mm |
| Magnetic Separator | RCT-12 | 7.5 | 150-300 | Iron purity >95% |
Q1: What’s the iron recovery rate?
A: Typically achieves 85-92% with proper magnetic separation settings.
Q2: Can processed slag sand replace natural sand?
A: Yes, after proper grading and quality control, it meets ASTM C33 standards.
Q3: Maintenance frequency for crushers?
A: Wear parts replacement every 800-1200 operating hours for slag applications.
A steel plant in Texas implemented this system in 2022:
– Raw material: 500t/day blast furnace slag
– Configuration: JC120 + PF1315 + RCT-12
– Results:
– Iron recovery: 89% (≈45t/day)
– Aggregate production: 380t/day
– ROI period: <14 months
The processed
