I worked at two EAF shops in NJ for decades. Instead of direct reduced iron, in order to boost the carbon for high carbon grades we added to the steel scrap either coal, coke, graphite or high carbon railroad rails instead. Also, to supplement the arc heat in the cold spots we had oxygen/natural gas burners. Supersonic Oxygen was injected through a lance through the slag door.
@@BackyardBeeKeepingNuevo when I first interviewed for the job as an engineer at the mill, I was asked to come back for a plant tour dressed in clothing I didn't mind getting sweaty and dirty. I did, and was mesmerized watching the arc furnace. I was told a previous applicant did not have a plant tour before he was hired. His first day on the job he was taken into the melt shop and was about 30 ft from the arc furnace at a safe location. When t started arcing it scared the crap out of the guy. He ran out, and immediately quit. My reeacion, on the other hand, was, "That's awesome!" and I was immediately hired.
Carbon content of steel is not 2 to 4%. It is much lower in most all steel grades. A 2% carbon steel would be too brittle for much use. A 4% carbon would be iron not steel.
3:20 - _"...combustion _*_of oxygen_*_ in the furnace"_ - ??! Or should it be "combustion CAUSED BY oxygen"? People, this animation was supposedly/ apparently produced by Swansea UNIVERSITY! And NOT by "Swansea City A.F.C.", right? Why then such a blunder? Repeat after me: "Oxygen does not 'burn' - it makes other things burn" - and again, "Oxygen does not 'burn' - it makes other things burn" - and again, "Oxygen does not 'burn' - it makes other things burn" - and again... till it gets through. And, oh, BTW - there's one exception, actually - OF2, or oxygen fluoride - NOT fluorine oxide, as in this marriage the fluorine is the "oxidiser" - but still, someone please check the script BEFORE recording the narrative, would ya? And then, 3:33 - _"The oxides combine with the calcium in the quicklime to form their RESPECTIVE CALCIUM OXIDES..."_ ?? But quicklime IS a calcium oxide, CaO, so...? Someone please translate it to plain and factually correct English "can or not"? Jeez... "Which then float on the surface of liquid steel, constituting (...??) constituting molten slag" also sounds like "modern education shining through"... How about "which then, being less dense, float as so-called slag on the surface of molten steel" - ? And then... A nit picking, one may say, but showing white-hot slag and steel as black, "tar-like" goo does strike me as odd, to say the least. How about RED, or bright orange? Huh?
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
I worked at two EAF shops in NJ for decades. Instead of direct reduced iron, in order to boost the carbon for high carbon grades we added to the steel scrap either coal, coke, graphite or high carbon railroad rails instead. Also, to supplement the arc heat in the cold spots we had oxygen/natural gas burners. Supersonic Oxygen was injected through a lance through the slag door.
Sweet. I would love to see that in person someday.
@@BackyardBeeKeepingNuevo when I first interviewed for the job as an engineer at the mill, I was asked to come back for a plant tour dressed in clothing I didn't mind getting sweaty and dirty. I did, and was mesmerized watching the arc furnace. I was told a previous applicant did not have a plant tour before he was hired. His first day on the job he was taken into the melt shop and was about 30 ft from the arc furnace at a safe location. When t started arcing it scared the crap out of the guy. He ran out, and immediately quit. My reeacion, on the other hand, was, "That's awesome!" and I was immediately hired.
@@PAHighlander24
@@BackyardBeeKeepingNuevo animation makes everything look good.
@@niladribiswas498 Yes it does
what voltage and current do they run at????
Depends on the transformer but typically around 1,000 volts at 75ka.
Brilliant.
One of my favourite Seinfeld episodes.
What's the deal with electric arc furnaces?
So we can't make steel without first using gas or coal?
This takes alot of power so you need to make that 😅
I think your arc gets a little hotter than 3000 C°, sir
It seems that it would lose efficiency in the molten steel because it conducts better than air
I see why the old steel mills shut down in USA.
Sounds like the don’t use any kind of shielding gas, just flux.
That's not background music. Great video otherwise!
Wel what kind of music is it? Funky background haha
@@jat1992jat1992😅😅😊😅😅
Carbon content of steel is not 2 to 4%. It is much lower in most all steel grades. A 2% carbon steel would be too brittle for much use. A 4% carbon would be iron not steel.
sulphur cannot be removed by oxydation !
3:20 - _"...combustion _*_of oxygen_*_ in the furnace"_ - ??! Or should it be "combustion CAUSED BY oxygen"? People, this animation was supposedly/ apparently produced by Swansea UNIVERSITY! And NOT by "Swansea City A.F.C.", right? Why then such a blunder?
Repeat after me:
"Oxygen does not 'burn' - it makes other things burn" - and again,
"Oxygen does not 'burn' - it makes other things burn" - and again,
"Oxygen does not 'burn' - it makes other things burn" - and again... till it gets through.
And, oh, BTW - there's one exception, actually - OF2, or oxygen fluoride - NOT fluorine oxide, as in this marriage the fluorine is the "oxidiser" - but still, someone please check the script BEFORE recording the narrative, would ya?
And then, 3:33 - _"The oxides combine with the calcium in the quicklime to form their RESPECTIVE CALCIUM OXIDES..."_ ?? But quicklime IS a calcium oxide, CaO, so...? Someone please translate it to plain and factually correct English "can or not"? Jeez...
"Which then float on the surface of liquid steel, constituting (...??) constituting molten slag" also sounds like "modern education shining through"... How about "which then, being less dense, float as so-called slag on the surface of molten steel" - ?
And then... A nit picking, one may say, but showing white-hot slag and steel as black, "tar-like" goo does strike me as odd, to say the least. How about RED, or bright orange? Huh?