First 100 tonnes of steel produced with hydrogen instead of fossil fuels: @ssab, @LKABgroup and @VattenfallGroup first in the world with hydrogen-reduced sponge iron.
lkab.com/en/news-room/p…
lkab.com/en/news-room/p…
I don't think the iron ore cared a lot about the hydrogen's origin, but this is a great step towards renewables-based primary steel production!
For background: the first step in steel production is turning iron ore into iron. That involves removing the oxygen atoms from the iron oxides, aka 'reducing' those. That's the role of cokes (coal) in blast iron furnaces, now taken over by hydrogen. So it's not just a fuel here.
After taking over the oxygen atoms from the iron ore, and providing some energy too, the cokes leave the process as CO₂. The hydrogen does so as H₂0, also known as water vapor.
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