Sweden delivered the world’s first fossil fuel-free steel

Re:Sweden delivered the world’s first fossil fuel-free steel by kleton on Saturday September 04, 2021 @04:07PM (#28418601)

Low temperature electrowinning of iron would be the holy grail https://energy.nl/en/factsheet/low-temperature-electrowinnin...

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Re:Sweden delivered the world’s first fossil fuel-free steel by jhgb on Sunday September 05, 2021 @03:47AM (#28422330)

There's also the crazy idea of direct electrochemical reduction of molten ore, which I've seen talked about in connection with lunar applications, but this looks like something you might even try at home (with the right equipment of course).

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Re:Sweden delivered the world’s first fossil fuel-free steel by tuatoru on Saturday September 04, 2021 @06:01PM (#28419722)

That is interesting, thanks.

If I'm reading the PDF right, it uses about 12 PJ per tonne of iron produced.

Best current practice with coking coal is about 15 GJ per tonne.[1]

So just a little energy efficiency improvement required.

1. Smil, V. Energy In Nature And Society 2008, p. 283 of paperback.

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