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Not Aluminum. However iron can be reduced in a low temperature aqueous cell. I can't think of why that couldn't be done intermittently. Takes about 3-4kwh per k
by Gibbon1 3y ago
Not Aluminum. However iron can be reduced in a low temperature aqueous cell. I can't think of why that couldn't be done intermittently. Takes about 3-4kwh per kg of iron produced. That probably works out to $150-250/ton.
You can also run electric furnaces intermittently because they are inherently a batch process.
- pfdietz 3y agoYou can also make iron by direct reduction with hydrogen. IIUC, this is actually more energy efficient (with green hydrogen) than direct electrolytic reduction. And electrolysers for hydrogen are getting cheap enough that running them intermittently will make sense.