Green Steel making

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Behind paywall. Here is another source:

Fortescue hails “green iron” breakthrough as own coal-free tech moves to...

BHP is scaling up their process:

BHP to pilot green smelting furnace using electricity, hydrogen and Pilbara...

Making “green steel” by electrolysis is already done in small scale in Sweden:

A Swedish Company Shipped World's First Batch of Green Steel - Shrink That...

Others are trying to make a breakthrough in “Green steel” production:

Two ‘Green Steel’ Processes Close to Commercial Viability

How Do You Make Green Steel?

In traditional steel manufacturing, oxygen is removed from iron ore to produce pig iron. Then, to create crude steel, the pig iron is alloyed with other metals such as nickel or chromium. Finally, the steel is physically transformed into the desired shape for construction or appliances using steps that require both heating and cooling. These processes require massive amounts of energy, reaching temperatures of 1,000 degrees C or hotter. To hit these temperatures, the manufacturing process relies on burning coal, emitting a large amount of carbon dioxide in the process.