Transmute wrote: Yes, I have head of it (look up microwave smelting). The reduction could be achieve with electrolysis or with plasma, yes they would be energy demanding but cheap fusion energy would make them economical. Many steel alloys require carbon in them so a source of carbon is needed. Biomass other then wood can be used, sustainable biomass.
There will be lots of spare coal for the purpose!
And, Jimmy, carbon is actually part of the molecular structure of steel, no? It’s inclusion hardens and stabilizes the metal.
