Green steel without green hydrogen – can it work?

Re:Green steel without green hydrogen – can it work? by baybal2 on Tuesday February 15, 2022 @11:39AM (#30348837)

> then refine it from iron oxide into pure iron and fortify it with small amounts of carbon. It’s a complex process that emits carbon at different stages. Some emissions come from the heating process, which usually involves burning a heat-refined form of coal called coke. A bit of the carbon from the coke gets dissolved into the iron, turning it into steel.

Very incorrect. It's not even a highschooler level mistake.

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Re:Green steel without green hydrogen – can it work? by etskinner on Tuesday February 15, 2022 @12:44PM (#30349909)

I worked in a steel mill a while back. While I agree it's incorrect, I would say that the average high school student knows next to nothing about making steel.

Here's how we made it: Take pig iron, put it into a Basic Oxygen Furnace. Add flux and inject supersonic oxygen. This removes impurities and carbon from the pig iron turning it into steel. Transfer to a huge crucible. Add any alloying elements, and cast it into slabs using a continuous slab caster.

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Re:Green steel without green hydrogen – can it work? by baybal2 on Wednesday February 16, 2022 @02:57AM (#30357415)

> I worked in a steel mill a while back. While I agree it's incorrect, I would say that the average high school student knows next to nothing about making steel.

What country you are in?

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