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by petermcneeley
1168 days ago
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>To decarbonise DRI, producers can add carbon capture and storage (CCS) technology to catch the emitted CO2. Or, if they have an external heating source, they can use pure hydrogen instead of coal, a process called HDRI – this is the decarbonising steel technology that has probably received the most investment up to now. Alternatively, there are two types of electrolysis technologies. In aqueous electrolysis (AE), as used by Electra, iron ore is submerged in acid and zapped with electricity, making the oxygen bubble off. In molten oxide electrolysis (MOE), electrodes are placed in powdered iron ore and a high current is run through it until it melts, and the oxygen comes off. All of these processes require an intense amount of energy either directly or indirectly. Where is all this energy to come from if right now it comes from coal/fuel? |
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