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How to Escape From the Iron Age? (solar.lowtechmagazine.com)

submitted 7 months ago by hahattpro@lemmy.world to c/technology@lemmy.world

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We cannot lower carbon emissions if we keep producing steel with fossil fuels.

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[–] cyd@lemmy.world 9 points 7 months ago

How much of the coal in a blast furnace is actually necessary for the carbon impregnation, as opposed to supplying the heat via combustion? Steel contains only a few percent carbon by weight, so it doesn't seem like much carbon is needed (not to mention that the carbon in steel is essentially sequestered).