The Comprehensive Guide to Iron Ore Briquetting in the Crushing and Sand-Making Industry
The global demand for high-quality iron ore continues to rise, driven by steel production and infrastructure development. In the crushing and sand-making sector, optimizing raw material utilization is critical. Iron ore fines and by-products generated during mining and processing often go to waste due to handling difficulties. Briquetting technology offers a sustainable solution by compacting these fines into durable, transportable agglomerates, enhancing resource efficiency and reducing environmental impact.
1. Raw Material Preparation
– Iron ore fines (<10mm) are screened and dried to reduce moisture (optimal: 8–12%).
– Binders (e.g., bentonite, cement, or organic compounds) may be added to improve strength.
2. Compaction
– High-pressure rollers (150–300 MPa) compress fines into briquettes (30–100mm diameter).
– Hot briquetting (optional) uses heat to activate binders for higher durability.
3. Curing
– Air-drying or thermal curing stabilizes briquettes for handling and transit.
Key Equipment:
1. Can low-grade ores be briquetted?
Yes, but binder selection is critical to achieve strength.
2. How durable are iron ore briquettes?
Typical compressive strength: 50–200 kg/cm²; abrasion resistance depends on binders.
3. Moisture limits?
Excess moisture (>15%) causes cracking; pre-drying is recommended.
A Brazilian mining firm integrated a briquetting line to process 500 t/day of ore fines. By replacing 30% of sinter feed with briquettes, they reduced energy use by 18% and cut waste disposal costs by 40%.
Iron ore briquetting bridges the gap between mining waste and industrial demand, offering economic and environmental gains. For crushing/sand-making professionals, adopting this technology can unlock new revenue streams while supporting circular economy goals.
(Note: Equipment selection and binder formulas should be tailored to ore properties. Pilot testing is advised before full-scale deployment.)
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