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Has anyone tried using hydrogen to reduce carbon dioxide from the atmosphere or carbon capture to CO and carbon to then reduce and melt the ore at higher temperatures perhaps by running the desired mix through plasma torch injectors into the reaction vessel to get a faster reaction and the desired carbon concentration for further processing to make various steel grades and alloys. In theory you could use a lot of existing equipment and knowledge without producing fresh carbon dioxide or totally retooling steel plants just the parts where coal in it's various forms os normally used.

How do different ores affect efficiency? Geothite vs hematite vs magnetite etc.

How does the new Chinese process work?

Very well presented

I process the nano materials in vacuum. maybe you can cut several steps in Vacuum ?

Is this the promised flash iron process that is told that happens in china?

Using hydrogen to reduce wouldnt be an a new discovery. Why hasn't it been look at seriously untill now? CSIRO developed a filter to seperate hydrogen and nitrogen from ammonia. Ammonia is mostly made from methane from natural gas.

Wonderful video, thanks a lot.

Non sense

Which AI tool did you use to create the animations?

thank you, it will change soon, there are other source of energy that with international cooperation in coastline, we can reduce global warming, sea is huge source of energy, further more we can prevent these phenomena like cyclone and flood and wildfire by using this hot seasonal atmospheric condition, recent years in summer, geothermal energy happens in surface of coastline, there are many countries in coastline with seasonal hot weather and water condition, in sum-up, by using this energy not only is economical but also reduce global warming in countries like Japan, China, India, Mediterranean countries, Iran, Mexico, Us, Canada, (Africa and Arabian countries....) . I invented new method base on air pressure rules and quantum physics ionization sea water minerals in strong dynamic magnet and electrical field and electric chemical reactions as part of fuel for producing electricity and fresh water and fertilizer. 7 zero pollution methods for reducing global warming I mentioned in my profile.

Wonderful video！

World class presentation 😮

Excellent work thank you for making it public.

We need carbon... Climate change from carbon is a SCAM

Besides hydrogen-based (H2, NH3, etc.) metallurgy, traditional metallurgical processes with CO2 recycling driven by green energy might also be a potential solution.

Try it out...

Anyone with a basic knowledge of what's involved knows it's a money pit and an easy target for all the Greta Thurnbergs to pout about so they can get donations to pay for their trips on jets

Oh please...first start banning Swift, Greta and Schwab from private jets.

This would be really nice technology. Now if only we can do this to the concrete and cement making industry which is even worse than steel for carbon emissions.

Please correct me if I am wrong. Wouldn't the H2 redux reaction, which releases H20 at high temperatures, create an opportunity for energy production? With the H20 being used to rotate a turbine.

Wow amazing video!

It was very satisfying to see details of metallurgy in reduction process. Despite it is a bit intense in science, still I am fascinated and liked the presentation.

Excellent video and detailed description, many thanks for sharing. Just a small correction at 23:00 min slide formula for ammonia is not correct, it is written HN3 whereas it should be NH3. Very informative and great!

Best video about green steel I have seen so far. Thank you very much 🫶

When will the next video come :)

This is very interesting 🤔 I was concerned about excess nitrogen being converted to NOx compounds in the stack or salting the iron produced😃👍 The converter for the iron ore would be feeding pulverized iron ore into a reactor with ammonia to extract iron powder with entrained nitrogen. Now, if some of that powdered iron was diverted then it could be used as fuel for the reaction process where the byproducts would be[ Fe + ◇ = Fe2O3 ] So, the nitrogen could be captured and sold The iron ore provides the raw material and the fuel to power the reaction and if you want to :show off", create a cogeneration facility in the steel plant to power the arc furnace with the same iron powder that is melted in the furnace. This is an environmentalist's fantasy come true 😂🤣👍

Thank you so much for this video. I know one day I'm gonna be a resource person on Green Steel Manufacturing and I won't hesitate to refer enthusiasts here to watch this video and get well articulated insights. I've learnt a lot here.

that is the best explanation i ever seen ! thank you

Could you go into detail about the price per kWh needed to produce green hydrogen and also green ammonia needed to produce green steel at roughly the same price as existing steel?

Is this a school project or just like a passion?

The difference in transport volume is not so important. But the price to get there is very high. It is the Haber Bosch process. One need 10 KWh/kg to produce ammonia. Only a complete fool will do such things. To free the hydrogen later, the ammonia has to undergo an endothermic cracking process + purification of the hydrogen. Quite costly and wasteful. Just foolish.

Let's face it. The massive amounts of carbon steel used to make wind turbines can only be made with coal!

I was under the impression that steel production was in need of higher temperatures, more like the 1200 to 1500 c? This temperature range of ~700c is in the ball park of most of the Molten Salt reactors. If not the salts providing the heat or the power for the furnace. Thank for the video. So much to digest and consider and explore.

Professor, I think you're going to be incredible when you grow up.

Well, can't say I like the robotic delivery, but at least you did explain it, and you pronounced "metallurgy" right, so I give props for that.

On the slide "Key Idea" I read HN3, mentioned as ammonia. Assume this is meant to be NH3. Nevertheless, NH3 is mentioned in literature as suitable carrier in transport of hydrogen (as is methanol); If hydrogen is generated in solar rich desert environment, it could be transported as NH3 and according to the presentation used directly in fabrication of green steel. Is this correct? Evert Blomsma

What can you use low carbon for? And what about hydrogen embrittlement?

If you had a large source of pure FeCO3 (siderite), would this be any more useful in the H2/electric plasma process? Siderite seems less useful for the traditional process.

Se toda produção migrar do BOF LD para o FEA, como fica a disponibilidade de energia elétrica e custo para produzir 2,4 bilhões de toneladas de aço líquido? Energia solar e eólica são suficientes?

Long distance transport is unfortunately a factor of how cheap shipping is nowadays. Now economics driving everything, if one could make green ammonia cheaper than grotty old bunker oil then ships could be efficiently powered by electric motors driven by NH3-fuelled turbines. Another win!

But the ammonia is made from... wait for it: hydrogen. And that is mostly created from methane, producing CO. So unless you can do it with green hydrogen, it's not so green. Might as well produce green hydrogen directly on the spot and skip the whole step of converting it to ammonia (this uses energy too!) and transporting it.

Devil's advocate here, would that starve the world's supply of ammonia for fertilizer? Also what is the comparative cost of the ammonia cycle versus the original process? Is it cost competitive? Or would vast subsidies be required to get steel producers to switch over?

This sounds like a great way to shift the production of greenhouse gasses from the steel sector to the ammonia sector.

Excellent overview. I look forward to seeing more. good outcomes.

It would have to be green iron as steel has carbon!

Great Video, Our chemistry teacher set us homework to research Green Steel. This covers everything, Thank you

Excellent intro beyond the surface -- a humble big thank you!

Does this process reduce the need for pelletization plants?