Steel production generates almost 10% of global carbon emissions and has long been considered “hard to abate.” Enter Boston Metal, a startup that aims to make carbon-free steel using only (sing it with me!) clean electricity. CEO Tadeu Carneiro explains “molten oxide electrolysis” and its potential to transform the industry.
This boston company has developed a new process to manufacture steel using zero carbon dioxide and a whole lot of electricity
Carbon is just the traditional way of removing oxygen from the iron oxide. There are other ways of purifying the iron. And this method cuts away a lot of steps involving multiple processes and a lot of coal. Give the article a read or listen for more info, it’s really interesting
At least according to Wikipedia, small amounts of carbon (< 2.14%) in the final alloy are an important component in controlling the ductility, which agrees with what I thought I remembered from materials classes (although I am not a materials scientist). Obviously not using the Bessemer process drastically reduces the amount of carbon necessary, but trace carbon is important.
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Carbon-free steel is just iron
[Edit] nevermind I forgot that that I don’t know metallurgy lol
Carbon is just the traditional way of removing oxygen from the iron oxide. There are other ways of purifying the iron. And this method cuts away a lot of steps involving multiple processes and a lot of coal. Give the article a read or listen for more info, it’s really interesting
At least according to Wikipedia, small amounts of carbon (< 2.14%) in the final alloy are an important component in controlling the ductility, which agrees with what I thought I remembered from materials classes (although I am not a materials scientist). Obviously not using the Bessemer process drastically reduces the amount of carbon necessary, but trace carbon is important.
Thanks for setting me straight! I kinda assumed it was some green washing bs, but the details in the interview are very interesting
I think they meant the carbon emissions during the production cycle, not the amount of carbon traces in the product
Howler of a title tho
Carbon steel is literally a type of metal. If you write „carbon free steel“ it is not surprising if it confuses people.
Oh yea the title is indeed confusing