HowStuffWorks - Ore to Steel

[silver760]

Why has no one considered combining the Blast furnace with the Basic Oxygen Furnace process so as to produce steel directly from the blast furnace? All that is required is the same water cooled oxygen lance as used in the BOS which is lowered into the molten steel after the slag has been tapped,to blow high purity oxygen through the iron to remove the excess carbon.This would remove the need for additional multi million $/£ plant and would reduce transport of molten iron/steel around the plant.

[joemchang]

I still don't get what ore is

[silver760]

@joemchang Ore is the rock which is mined from the ground.In certain areas the rocks will contain higher percentages of Iron Oxide,this is the "Ore" the more iron oxide in the rock the better.Sometime the ore is refined by crushing it and concentrating the iron oxide by removing waste rock,This refined ore is made into marble size pellets which are then put into the blast furnace with limestone,the limestone is used as a flux,it melts and removes unwanted impurities in the iron.

[The321bonecrusher]

Hands up if minecraft took u here

[MrTeivaz]

What the hell is cubic feet per minute? Is there any serious measurement unit?

[asdf156able]

prove to us that there is a god or supernatural deity

[mQtek]

Locust underground cave in gears of war 2 lol same color :D

[thetruthonthereal]

is that how the twin towers melted? it doesnt make sense

[Animechannel29able]

Ore / Cokain ;]

[lordthorpez]

Down with ads!

[aussiespider]

Will it Blend?

[Skid00everest340]

one time swedish steel was the best you coud get in europe. during ww2 sweden gave away tons of steel and ore to germany so germany woud leave us alone. we had bigger problems called russia. but now its peace wich is good but economic problems makes bigger problems. =P

[Firelife3]

@Skid00everest340 And we here in Finland had even more problems with russia...but after the war a lot of Swedish steel was sent to Finland, to rebuild our country... =)

[Skid00everest340]

@Firelife3 i didnt know that...? and by the way i live wery close to finland and im a quarter finnish and in school we have one finnish class one swedish. and they teach us finnish in school too but for me its not going so well only finnish words i can is the bad ones like perkele voi vito and satana perkele. how i know this ask my dad he speaks fluid finnish and the rest off my wittikko reletives =)

[domyaska]

excellent documentaries!!! I watch them in Italy on Sky TV ..thanks a lot for sharing !!!!

[rddaos]

"moving at 110,000 cubic feet per minute" ahahaha, this moron doesn't know linear motion is measured in distance units over time, not volume over time

[xeroxunlimited]

@rddaos i dont know much but it might be the rate of expansion???

[rddaos]

@xeroxunlimited

nah... it's just that he's not a science/math type guy and he didn't realize that speed is measured in units of distance divided by time

[Qermaq]

@rddaos Or, that's how much volume is moved in a minute. Maybe it's a production rate, not a belt velocity.

[joker102877]

@rddaos You're the moron. He's referring to a volume of material, measured by how much mass moves in a given time, not how far the material moves.

[rddaos]

@joker102877

He didn't say anything about "mass". cubic feet per minute is a volumetric flow rate - NOT a mass flow rate, dummy. 

[joker102877]

@rddaos Sorry, I assumed you were smart enough to know that a volume of liquid, like any other element on the periodic table, contains mass.

[rddaos]

@joker102877

The mass flow rate of a gas and the volumetric flow rate of a gas are two completely different things. I don't expect you to understand what I just said.

[joker102877]

@rddaos And??

[Ondrix]

@rddaos Their right. You are a moron. In the video the narrator is talking about the volume of oxygen being moved in a minute and not the distance or speed the oxygen is moving. So the video is absolutely right and your wrong because your an idiot.

[rddaos]

@Ondrix

Movement is given in terms of DISTANCE over time, not VOLUME over time, dummy. And you need to learn how to spell "they're". 

[Ondrix]

@rddaos WOW..... did you realy say movement can only be given in distance over time and not volume over time? If that's true then how do you explain, for instance, the movement of water from a firehose? You would state the amount of fluid volume over a set amount of time. Not the distance the water travels through the hose or from the nozzle.

[rddaos]

@Ondrix

I explain the MOTION firewater by noting the speed and direction NOT the volume per time, dummy. I explain QUANTITIES of water by volume, mass, etc.

[Ondrix]

@rddaos Fine... you got me on explaining motion. But your still wrong about the video. The reference to "110,000 cubic feet per minute" is not talking about the motion of the air.... but the quantity of air being forced into the blast furnace. So in the last comment, by pointing out my mistake, you just pointed out your own.

[rddaos]

@Ondrix

the reference was not talking about motion?? He said MOVING at ....

[Ondrix]

@rddaos Yes that's what he said. But if you finish that sentence he said "at a rate of". He's talking about the volume of air moving into the furnace. You don't have to state the distance something moves to let someone know it's moving. In this situation he's just saying that the air is moving and how much is moving in. Because in this situation the distance the air moves, or the speed it's moving at, is irrelevent.

[rddaos]

@Ondrix

my cock is hard for you ondrix

[aarondkeogh]

slag and coke

[therohanicelf]

God is a construct of inferior human minds looking for meaning in the world.

No religion has any more reason to be true than any other, and they all have scientific inaccuracies in their ancient religious "teachings".

[84decade]

mushrooms are my religious revival :)

[supermigit999]

@therohanicelf not trying to be a asshole but try to keep this stuff to yourself if might piss someone with these kinda comments

[honda900fz]

JesusChristRulesYOU

talking like that will get you into hell and fast read the bible dude you cant tell anyone they are going to hell thats gods place

[84decade]

i believe there was a jesus, i also believe he was a victim of circumstance, not a god... furthermore he hung out with prostitutes and party animals water into wine? was my feet girl but im not going to put my dick in you... COME ON?!

[TheHampdenRaven]

What? lol your post made absolutely no sense, is English your mother tongue? Because I could not understand what you said at all beyond the first sentence.

"was my feet girl but im not going to put my dick in you" What the fuck does that mean?

[furysmack]

Why agure over the internet. Makes you and the other person a retard, so like wacth the video and not read comments?

[Gig540]

Well actually according to people like you everything and everyone is going to hell. So now Hell is filling up at an exponential rate which will cause it to be full before we finish reading your comment. Now since you educated us on this steel and ore stuff that will be in hell also. If hell continues to fill at this rate there will be noway for anything to burn at such a fast rate since it fills faster than it can burn. So Hell will freeze over. So we can repent but where will everyone go now??

[mwillblade]

@rddaos Good for you

[tman383]

yay me too high five xD :D

[swizzle537]

@JesusChristRulesYOU heck ya

[khryzalids]

JesusCrhistCanSuckIT

[xxsari]

FAGS BELOW

[links212]

How stuff works is awesome!

[ACE642642]

Thanks for letting me know who to get it down to 2%.. Assholes.

[juuliuuz]

It's would be hot place to bath ;D

[juuliuuz]

cool

[qwertyboy1234567899]

tweer... lol

[bluebutdude1]

whats slag?

[snowballeffect]

it's the trash that u don't want in the iron, like he mentioned "silica" which is sand.

[A1iaaOP92]

Yep,it's what they use for roads too.

[greenyoshi48]

lol coke xD

[OneEyedJack1970]

You don't have to melt steel to weaken it substantially. You can make it easier to bend just by sticking it in a fire until it turns red.

[KenjiSenpai428]

This process is called annealing and yes it does make the iron soft. Iron begins to weaken its crystalline structure at just above 500 deg. F and turns dull red at 900 deg. F so the 1700 deg. F previously mentioned would be more than enough to weaken the steel girders and posts enough to cause structure failure. Its sad but its true.

[schrollbach]

go back to wikipedia and try to get your facts straight

[trainzclassics2]

Wikipedia is not accurate, how can you tell whats right on wikipedia?

[schrollbach]

sarcasm, look it up

[trainzclassics2]

wikipedia is being edited by thousands of people over the internet, some are vandals and out in wrong information, and some are good people and put in useful info in it, you can't trust wikipedia, so why don't you get your facts right?

[schrollbach]

holy crap, you must be retarded, I MEANT IT SARCASTICALLY.

HURR DURRR

[trainzclassics2]

no, im not retarded, you are because your the one who thinks wiki is accurate, so get fucked you douche

[schrollbach]

rofl, no, i was saying that wikipedia is accurate SARCASTICALLY i.e. i know it sucks.

seriously, go to a dictionary and look up the word sarcasm, it will help you in this little discussion.

[trainzclassics2]

yes i know what sarcasm means, but you did'nt use punctuation marks properly so i did not understand what you mean't.

anyway, this fights getting pretty stupid, lets just call it and end shall we?

[schrollbach]

i agree

[trainzclassics2]

so what have you been doing lately?

btw, sorry for y'know replying to you in that matter.

[schrollbach]

nothing much really, summer time so no classes.

also, sorry for being so rude earlier.

[TheHampdenRaven]

or may be a retard hurrr durrrr.... lol

[darinsproductions]

no u just melt it then u get smithing xp lol

[leetrownages]

how much xp per steel bar?

im going for 99 smith

[darinsproductions]

lol idk XD

[JesseLH88]

If I remember correctly, smelting gives much less xp.

It's much better to work at the smithing plant.

[GeorgemusPrime]

I has 99 Smithing and I have to admit, smelting is way too little xp, smithing is like ++

[theblackcuriass]

to much runescape for u

[juuliuuz]

lol ;D

[NCCNeon]

This narrator is extremely distracting to me. In the old days of radio, we used to call this 'puking' ... the exaggerated breath tones at the end of each sentence, for example.

[Ferrari0Dragon]

LMAO, you just made it more distracting. I'm trying to hear those breathes now.

[Mayondor]

coke lmao

[hipser]

WhaT a ClifFhaNgeR!!!

[ChocduckyProductions]

hahahahahah

hot air DOES come from queers...

who knew?

[OneEyedJack1970]

So it looks like fire can melt steel after all. Who'da thunk it?

[w3bmatt]

Dude...

Are you stupid?

This vid is obviously a fake!

We all know water "melts" steel, not fire.

Numbnut.

:P

[owenvennik]

heat melts it

[HDgameplayvideos]

I don't know if you're satirical or are relating this to the events of 911. If you should know, the fires reported in the buildings didn't surpass 1700 degrees Fahrenheit, and on top of that, the steel had another layer around it to insulate any heat, so the heat felt by the steel is way below that number. Also, the temperature to melt the steel in this video is 4000 degrees Fahrenheit, not close to what was reported on 911.

[KenjiSenpai428]

The temp to actually melt steel is at maximum 2500 deg. F for a high carbon steel. The 4000 degree mark is only to keep the iron from hardening while it moves through the bottom of the furnace and to make the iron receptive to singular elements such as the carbon.

[wedgeh05]

What about the carbon?

[slywinkl]

knowledge *yumyum**addicted** **snarls***

[LuxuriousLuxembourg]

learning stuff daily love it.

[BinkieMcFartnuggets]

Meanwhile wood is stronger than steel and these guys are just wasting their time with molten pig iron.

[jaykia]

which is why all axes used to cut wood are also made of wood right?

[BinkieMcFartnuggets]

I know it doesn't make much sense, but that's what their "Wood Appeal" video said. Don't take it up with me! Take it up with Discovery Networks!

[aaronyovan]

I think what they mean is that the failure point of wood to a similar piece of steel wood is higher. Much like how if you take the human bones and a concrete cylinder the bone can support more weight due to its porous nature. I think in the cutting you are thinking more along the lines of pure elements and gemstones. Then again I skipped most of highschool so who knows?

[BinkieMcFartnuggets]

This is very troubling, if you can't trust Discovery for your wood strength claims, who the hell can you trust?!

[teemuruskeepaa]

I was afraid this report would miss all actual details. It pisses me off.