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Recovering Pig Iron from Hematite

02/02/2009 5:04 AM

How can I recover reasonably pure pig iron from hematite containing 26% Titanium using a mini blast furnace?

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#1

Re: Recovering Pig Iron from Hematite

02/02/2009 7:26 PM
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#3
In reply to #1

Re: Recovering Pig Iron from Hematite

02/03/2009 4:09 AM

The right to left format and my abhorred pronunciation of Hebrew had me google it a fresh. Titanium was not mentioned on the American version so I included it.

GA by the way

Brad

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#4
In reply to #3

Re: Recovering Pig Iron from Hematite

02/03/2009 6:07 AM

Cheers.

Maybe Google has their own quirky ways (different settings in the search-algorithm) for the Hiberu ...

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#2

Re: Recovering Pig Iron from Hematite

02/03/2009 3:59 AM

Don't you mean how can I recover the Titanium from Hematite and have reasonably pure pig iron as a byproduct.

The Ti would buy you steel if you can reasonably recover it.

http://www.google.com/search?hl=en&q=Recovering+Pig+Iron+from+Hematite+titanium&btnG=Search

Brad

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Popular Science - Weaponology - Scapolie, new member.

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#5

Re: Recovering Pig Iron from Hematite

02/03/2009 12:50 PM

I don't think that you have hematite as an ore, it sounds like "Ilmenite" an Iron Titanium oxide (FeTiO3) that is mined for it's titanium content. Hematite is ioo% pure iron oxide (Fe2O3).

To obtain pig iron from Ilmenite you will have to first extract the titanium as an oxide!

Spencer.

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#6

Re: Recovering Pig Iron from Hematite

02/04/2009 4:34 AM

I haven't tried it but TiO2 is not reduced by C at blast furnace temperatures, so a normal blast furnace operation should remove the pig iron and the TiO2 should report to the slag. Incidentally, some water vapor seems to improve the effectiveness of the carbon.

You may need to fiddle with the fluxes (lime, silica, possibly NaCO3) should be able to dissolve/react with the TiO2 and remove it from the ilmenite. (I'm sure your ore is ilmenite).

As Ti is a frequent component of rocks, silica, lime and alkali's will almost certainly remove it from mix and into the slag.

Another possibility for a flux is CaF2 but this may give undesirable products during smelting. I think it is also toxic, so should be avoided unless you must use it.

You probably need to experiment a bit, before committing yourself to a plant.

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#7
In reply to #6

Re: Recovering Pig Iron from Hematite

02/04/2009 11:39 AM

Hi sceptic,

Commercially they extract titanium from ilmenite using "Fluosilicic acid (SiF).

Spencer.

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#8
In reply to #7

Re: Recovering Pig Iron from Hematite

02/05/2009 6:11 AM

Hi Scapolie

Thanks for the info. I've never looked into Ti production. I must do some reading, looks interesting.

"Commercially they extract titanium from ilmenite using "Fluosilicic acid (SiF)."

Nasty stuff. I'd prefer to run a last furnace and send the TiO2 to slag.

(Sorry about the bold and italic above. Can't make the thing behave)

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Member

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#9

Re: Recovering Pig Iron from Hematite

02/07/2009 3:14 PM

To find info on smelting. Go to this blacksmiths site and click the link on blooms

http://www.leesauder.com/

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