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Mineral And Metal Ores
STC has been regularly importing various types of mineral ores and concentrates into India to meet the requirements of actual users in the country.
Manganese Ore
Typical Specifications of Manganese Ore required for Ferro-manganese in India:
| Constituents | Mineral Ore Grade | |||||
|---|---|---|---|---|---|---|
| 48% and above | 46-48% | 44-46% | 42-44% | 40-42% | 38-40% | |
| Fe (max.) | 7% | 8% | 10% | 11% | 13% | 15% |
| SiO2 (max.) | 7.5% | 9% | 10% | 11% | 12% | 13% |
| Al2O3 (max.) | 2% | 3% | 3.5% | 4% | 5% | 6% |
| SiO2+Al2O3 (max.) | 8% | 10% | 10% | 12% | 13% | 15% |
| Mn:Fe ratio (min.) | 7 | 6 | 4.5 | 3.5 | 3 | 2.5 |
Iron Ore
STC exports Iron ore to various clients mainly based in China and East Asia.
Typical Specifications of Iron Ore:
| Fe content | 50% | 51% | 52% | 53% | 57% | 59% | 63% |
|---|---|---|---|---|---|---|---|
| Sio2 | 7% | 11% | 10% | 7% | 8% | 6.5% | 4.5% |
| Al2o3 | 8.5% | 6.5% | 6% | 7% | 5% | 4.5% | 6.5% |
| S | 0.03% | 0.03% | 0.03% | 0.07% | 0.03% | 0.07% | 0.03% |
| P | 0.06% | 0.08% | 0.06% | 0.07% | 0.07% | 0.08% | 0.08% |
| Moisture | 11% | 10% | 10% | 10% | 10% | 9% | 10% |
| Size>10mm | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Size<150micron | 35% | 35% | 35% | 35% | 35% | 40% | 35% |
| Size< 10mm | 90% | 90% | 90% | 90% | 90% | 90% | 90% |