You might be interested in the direct reduced iron process. https://en.wikipedia.org/wiki/Direct_reduced_iron https://en.wikipedia.org/wiki/Direct_reduced_iron

You might be interested in the direct reduced iron process. https://en.wikipedia.org/wiki/Direct_reduced_iron https://en.wikipedia.org/wiki/Direct_reduced_iron I think[1] typical plants steam reform natural gas to CO and H2 and use that to reduce iron ore below the melting temperature of iron. Which makes it energy efficient. [1] I think == don't quote me