Comment on How to Escape From the Iron Age?

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cyd@lemmy.world ⁨1⁩ ⁨month⁩ 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).

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