[j2bax]

Is there a reason they couldn't just reuse the same steel over and over just to process the cement at scale?

[sandworm101]

Lime is used to remove impurities from the melt. So I imaging they would have to re-add those impurities each time. I doubt that would be energy-efficient.

[dylan604]

The industries in the Steel Belt liked your post

[bell-cot]

Very likely no - so long as electrical power is free-ish. Because if they aren't actually producing X units of steel along with Y units of cement in each batch, then they'll have to pay for the whole thing out of just the cement sale revenues.