Induction furnace
The mainstay charge in India’s induction melting shops, blended with scrap.
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Sponge iron (DRI)
Direct reduced iron, known in India as sponge iron: iron ore reduced in the solid state in a coal-fired rotary kiln, without melting. It is sized lump and pellet, part metallic iron and part unreduced oxide, and it is graded by its degree of metallisation.
- Grade / purity
- Metallisation 88 to 90.5%
- Form
- Lumps and pellets, 3 to 20 mm
Applications
Electric arc furnace
A low-residual charge that dilutes the tramp elements scrap brings in.
Billets and re-rolling
Melted with scrap into billets for bar, rod and section mills.
Specification
| Total iron (Fe) | 88.0 to 90.0% |
|---|---|
| Metallic iron (Fe met) | 78.0 to 80.0% |
| Metallisation | 88.0 to 90.5% |
| Carbon (C) | 0.15 to 0.25% |
| Sulphur (S) | 0.040% max |
| Phosphorus (P) | 0.075% max |
| Size | 3 to 20 mm |
| Bulk density | 1.6 to 1.8 t/m³ |
Indicative of coal-based rotary kiln sponge iron as produced in India. It moves with the ore and the kiln, so the analysis is agreed per contract and certified per shipment.
