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butyl diglyme

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67eod

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Post May 20th, 2009, 9:56 pm

butyl diglyme

I have been talking with a gent who is recommending the use of butyl diglyme. Is there anyone out there whois using this method?

Bob Noble
Robanoble
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Platdigger

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Post May 20th, 2009, 10:31 pm

No, but I have a few jugs I have never opened.
Randy
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cmclean

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Post May 26th, 2009, 10:04 pm

Re: butyl diglyme

I would appreciate an answer to this question:
Once you mix the auric chloride solution with the BDG, what is the elapsed time before the phase separation starts happening?

I received a small free sample of Butyl Carbitol (100 grams) and tested it with an auric solution but have not seen the separation yet. This was 9 hours ago.
Thanks
carlos
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lazersteve

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Post May 27th, 2009, 6:00 pm

BDG Phase separation

The phases should separate in a matter of minutes.

Sounds like you may have formed an emulsion of some sort.

Steve
The proof is in the pudding.
Purchase refining supplies and DVDs --> Lazersteve's Store
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Click Here for -->Stannous Chloride Recipe and Testing Results
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67eod

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Post May 28th, 2009, 7:21 pm

Re: butyl diglyme

Hi,
I have a procedure manual coming for Ferro Corp. It has the info needed for gold recovery using BD. One of the things I have found out to date is that a solution of Oxalic acid needs to be added to a 4 to 1 solution of gold cloride and the the solution needs to be heated before the gold drops. I will keep you posted when I get the info. I have five gals of B/D which I paid 68 dollars a gal. Much more than I will ever use, if anyone out there want to get some contact me.

Bob Noble 8)
Robanoble
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lazersteve

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Post May 28th, 2009, 7:39 pm

Getting gold from BDG

Bob,

Did you know that you can reduce the gold in BDG using SMB and water?

You can also use Hydrogen Peroxide.

Steve
The proof is in the pudding.
Purchase refining supplies and DVDs --> Lazersteve's Store
Click Here for the -->Guided Tour Link
Find anything on the Forum FAST!!!---> Click Here
Click Here for -->Stannous Chloride Recipe and Testing Results
What is in Lazersteves DVD's ?
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cmclean

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Location: Colombia

Post May 28th, 2009, 9:05 pm

Re: butyl diglyme

Hi Steve:

In one of your posts related to BDG, some months ago, you mentioned that you had detailed information on the use of BDG;
Would it be possible to receive this information?
I have been trying to get as much information as I can on BDG, but, so far, apart from Noxx's very good tutorial, and a couple of additional documents, I have not been able to locate practical information on its use. For example ,information on the use of SMB and H2O2 that you mention in your previous post is not described in anything I have read so far.

Thanks for your help.
cmclean
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lazersteve

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Post May 28th, 2009, 10:03 pm

BDG Information

Here's a patent on the subject:

DBC Patent

The use of SMB and H2O2 as precipitants is something I learned by experimentation since my forum posts on the subject.

Steve
The proof is in the pudding.
Purchase refining supplies and DVDs --> Lazersteve's Store
Click Here for the -->Guided Tour Link
Find anything on the Forum FAST!!!---> Click Here
Click Here for -->Stannous Chloride Recipe and Testing Results
What is in Lazersteves DVD's ?
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rhwhite67

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Post May 31st, 2009, 12:26 am

Re: butyl diglyme

Does anyone know if BDG will extract the gold ions from Bromine leach solutions?
Thanks Ron
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lazylightning

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Post May 31st, 2009, 8:37 am

Re: butyl diglyme

What about a leach that's saturated with lead and other metals and the oxidant is Cl, ClO and ClO2 instead of nitric acid?
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lazylightning

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Post May 31st, 2009, 9:33 am

Re: butyl diglyme

I've seen butyl diglyme refered to as being the same thing as dibutyl carbitol. are they the same?

Does anyone know what solvent mintek uses in it's Mintaur process? Here's a uote:

"In 1972 Inco Europe Ltd.4installed asolvent extraction (SX) process for the refining of gold using dibutyl carbitol (DBC) as the extractant. Although the selective extraction of gold from chloride media using DBC is favourable, stripping requires direct precipi-tation of gold from the loaded organic phase,resulting in high organic losses. The high aqueous solubility of DBC also requires distil-lation of the raffinate to recover the relatively expensive extractant. The Minataur™ process employs SX using a relatively inexpensive extractant to selectively extract gold from chloride media.Gold is readily stripped from the loaded organic phase, negating the use of a direct precipitation step. The high selectivity of the extractant for gold over base metals and platinum group metals (PGM) enables the production of very pure loaded strip liquor from which 99.99 per cent pure gold product can be precipitated using sulphur dioxide—also a relatively cheap reductant. "
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Noxx

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Post June 6th, 2009, 11:41 am

Re: butyl diglyme

Yes they are the same. Also, be sure to remove any nitric acid left before using BDG.
Jean-Nicolas Allaire,

Please read before you precipitate.
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lazylightning

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Post June 6th, 2009, 10:53 pm

Re: butyl diglyme

What about an HCl +Cl/ClO/ClO2 leach? Can I neutralize the oxidant somewhat with sodium thiosulfate as the way to get rid of the oxidant?
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Noxx

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Post June 6th, 2009, 11:20 pm

Re: butyl diglyme

I don't think you need to get rid of the oxidant... As long as you have gold chloride present and no nitric acid, you can use BDG.
Jean-Nicolas Allaire,

Please read before you precipitate.
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lazylightning

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Post June 8th, 2009, 10:21 pm

Re: butyl diglyme

So you have toget rid of the nitric as in akvua regia(sorry, broken keyboard)), but if I've used HCl plus Cl (with byproducts of ClO, ClO2 from electrolysis), then it's just shake and bake))) Wow, that sounds great.

Now I'd just like to find out that secret solvent that Mintek of Southafrica uses. Mainly cause it'scheap and I don't really want to get into massive distillation\recycling. Is it really a secret or have I been searching badly?

I've found that there are different solvents and absortion gels mentioned in different scientific articles and patents. Later I want to post a list of them all with references to the patent numbers and articles. I think it mightbe more than just interesting)
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ormagus

Post July 28th, 2009, 2:32 pm

Re: butyl diglyme

How effective is butyl diglyme for extracting gold out of aqua regia?
Does it react badly (explosively) with nitric acid?

I've used diethyl ether on aqua regia before, and it appears semi-dangerous and somehow effective.
I let the aqua regia extract magnetite for a day, then add an equal amount of ether, mix, and decant the ether. Three times.
The aqua regia/ether mix warms up on the first addition and mixing of the ether, slightly warm to the touch. I don't think letting it sit like that would be wise or adding the ether fast and mixing vigorously would be wise either. But done slowly and carefully it doesn't seem to be too dangerous. I've done it several times and it always works to extract goldchloride.
(The aqua regia needs to be concentrated though. It doesn't appear to work when dilluted with water.)

The ether appears to extract gold (and maybe pgm's too, I don't know which kinds all dissolve in ether for those that dissolve in AR) but also iron (though a lot less than what remains dissolved in the aqua regia).

I would try butyl diglyme instead of diethyl ether and see what base metals it dissolves.

Does it seperate easily from aqua regia or goldchloride?

What about reactivity with hydrogen peroxide btw?
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ormagus

Post July 28th, 2009, 3:20 pm

Re: butyl diglyme

Found answer to a most important question in the Gold Refining Forum Handbook Vol. 1:

"C12H26O3 =BDG or DBC= Butyl DiGlyme or DiButyl Carbitol = Organic solvent that
combines with Auric Chloride and is insoluble in water based solutions. Separates from
water based solutions as an upper phase (layer). After washing with dilute HCl gold is
dropped as flakes using Oxalic Acid. Can be used on AR solution without neutralizing
excess nitric acid.
"

Also found out hydrogen peroxide drops the gold out of the butyl diglyme so I assume it's safe to combine with it.
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Lou

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Post July 28th, 2009, 7:57 pm

Re: butyl diglyme

It's safe provided your aqua regia is room temperature or less. Which it would have to be in the case of ether, otherwise it would be busy inebriating you (bp. 35C).
Like chemistry? Try http://sciencemadness.org/talk

All that glitters is not gold. Occasionally it's rhodium :)
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Platdigger

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Post July 28th, 2009, 8:21 pm

Re: butyl diglyme

HI Ormagus, you wrote: "I let the aqua regia extract magnetite for a day"

May I asume you are extracting gold from your black sands with AR?

Do you have visable gold in your sands?
Thanks
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ormagus

Post July 29th, 2009, 5:50 am

Re: butyl diglyme

Attempting to extract gold yes. No visible gold no, but one sand has been assayed to contain gold and platinum, the other rhodium and iridium.
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