The iron ore beneficiation and pelletization process transforms low-grade ore into high-quality pellets for steel production. Key equipment includes crushers, grinding mills, magnetic separators, and pelletizing discs.
Primary crushing is performed using jaw crushers (e.g., PE-1200×1500, capacity 400-800 t/h) or gyratory crushers. Secondary crushing employs cone crushers (e.g., HPT300, output 200-250 t/h). For grinding, ball mills (Φ3.2×4.5m, capacity 50-65 t/h) or vertical roller mills are used to achieve fine particle sizes (<0.074 mm).
Magnetic separators (e.g., CTB-1230, field intensity 1500 GS) remove impurities. Spiral classifiers or hydrocyclones classify ore slurry. Dewatering is done via thickeners (Φ30m) and filter presses (120 m² filtration area).
Pelletizing discs (Φ6m, capacity 1.2 Mt/yr) mix fine ore with binders. Induration furnaces (1.5-2 m/s belt speed) harden pellets at 1300°C.
| Equipment | Model | Capacity | Power (kW) |
|——————–|————|—————|————|
| Jaw Crusher | PE-1200×1500 | 400-800 t/h | 160 |
| Cone Crusher | HPT300 | 200-250 t/h | 250 |
| Ball Mill | Φ3.2×4.5m | 50-65 t/h | 800 |
| Pelletizing Disc | Φ6m | 1.2 Mt/yr | 110 |
Q: What is the ideal feed size for pelletization?
A: Typically <0.045 mm (~80% passing).
Q: How to reduce energy consumption?
A: Optimize grinding circuits
