Research Article
Life Cycle Assessment of Environmental Impact of Steelmaking Process
Table 1
Life cycle inventories of molten steel. Value are presented per ton.
| Inputs and outputs | Categories | Normal production | Clean production | Unit |
| Molten iron | | 1008 | 947 | kg | Scrap steel | | 70.43 | 78 | kg | Electricity | | 26.65 | 25s | kWh |
| Ingredients | Quicklime | 50 | 50 | kg | Fe | 20 | 20 | kg | Dolomite | 20 | 20 | kg |
| Fuel | Coke oven gas | 0.16 | 0.16 | m3 | BOF gas | 12.15 | 12.15 | m3 |
| Working medium | Oxygen | 37.28 | 37.28 | m3 | Nitrogen | 45.12 | 45.12 | m3 | Argon | 75.2 | 75.2 | m3 | Air | 15.38 | 15.38 | m3 | Pure water | 2.7 | 2.7 | m3 |
| Emission | CO2 | 28.28 | 28.28 | kg | SO2 | 5.75 | 5.75 | g | NO2 | 3.84 | 3.84 | g | CO | 4.6 | 4.6 | kg | Waste water | 1.07 | 1.07 | m3 | Dust | 135 | 135 | kg | Cd | 50 | 50 | mg | Cr | 120 | 120 | mg | Cu | 3090 | 3090 | mg | Ni | 280 | 280 | mg | Pb | 930 | 930 | mg | Zn | 7500 | 7500 | mg |
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