Refining Using Butyl DiglymePosted

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seawolf

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Oct 18, 2010
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Post subject: Refining Using Butyl DiglymePosted: April 29th, 2007, 4:49 pm


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Joined: February 24th, 2007, 7:10 pm
Posts: 2916
Location: Sherbrooke, Qc Butyl Diglyme is a good variation of the standard Aqua Regia method. You can achieve a gold purity of 99,99+ with BDG. Also, BDG is reusable.
This tutorial will show you how to refine gold using it.

Material:
-Butyl Diglyme (go there if you plan to buy some: http://goldrefining.110mb.com/phpBB2/viewtopic.php?t=99)
-Separatory Funnel (Very very useful. Take a 2L funnel if possible.)
-Hot plate
-Gold Chloride (dissolved gold)
-Oxalic Acid or other precipitant.
-Standard PPE
-HCl
-Water
-Scale
-Magnetic Stirrer (optional)

Here is the tutorial link:
http://goldrefining.110mb.com/Tutorials/BDG%20refining.htm

Questions or Comments:
http://goldrefining.110mb.com/phpBB2/viewtopic.php?p=5455#5455

[img::]http://i14.tinypic.com/4xzt7kg.jpg[/img]

Very pure gold achieved with BDG.

_________________
Hallmarks are lies.


Last edited by Noxx on June 27th, 2007, 7:50 pm, edited 1 time in total.

Noxx: Would it be possible to restore the links in your post? I would like to see them if possible. I read as much on refining as I can find and this has me curious.
Thanks, Mark
 
I'm sorry, I don't have a backup of this little tutorial...


seawolf said:
Material:
-Butyl Diglyme (go there if you plan to buy some: http://goldrefining.110mb.com/phpBB2/viewtopic.php?t=99)
-Separatory Funnel (Very very useful. Take a 2L funnel if possible.)
-Hot plate
-Gold Chloride (dissolved gold)
-Oxalic Acid or other precipitant.
-Standard PPE
-HCl
-Water
-Scale
-Magnetic Stirrer (optional)

Did I really write that ?
 
New to the forum and excited to be a part of it. Thank you in advance.

I LOVE the BDG process and have very consistent results with it. Now, I am working on using it on very pregnant AR solution and I am wondering if I would get better results by evaporating (vacuum distilling) the nitric acid out of the AR before extracting with BDG.

Anyone have any thoughts on this?

Thank you again.

CW
 
yet another obscure way to dissolve gold, although the chemicals are not commonly obtainable:
http://pubs.acs.org/cen/news/89/i14/8914notw4.html

a 1:20 ratio SOCl2-dimethylformamide mixture dissolves gold quickly, but it leaves palladium and platinum untouched; a 3:1 SOCl2-pyridine mixture dissolves gold and palladium rapidly, but it leaves platinum alone.
 
Thanks for posting the link, now I will have a bunch of reading to do then some experiments.
Mark
 
I used to have to use pyridine in some analytical methods. The lab had a small fume hood, dedicated only to the use of pyridine. It had a small sink built into the back of it. The sink was used to rinse out the glassware before removing it from the hood. Worst smelling stuff on the planet. I remember reading once that the odor actually created clinical depression.
 
I used it to titrate total cyanide in a waste stream, using pyradine-pyrazolone. The cyanide liquor had to be acidified and captured in a sodium hydroxide bubble trap to convert all of the cyanide to sodium cyanide.

I was one happy camper when selective ion probes came on the scene!

I last used the stuff in 1974 and just last year I got a whiff of the stuff in a chem lab slated for a cleanup, still remembered the smell after all of those years!
 
Noxx said:
I'm sorry, I don't have a backup of this little tutorial...


seawolf said:
Material:
-Butyl Diglyme (go there if you plan to buy some: http://goldrefining.110mb.com/phpBB2/viewtopic.php?t=99)
-Separatory Funnel (Very very useful. Take a 2L funnel if possible.)
-Hot plate
-Gold Chloride (dissolved gold)
-Oxalic Acid or other precipitant.
-Standard PPE
-HCl
-Water
-Scale
-Magnetic Stirrer (optional)

Did I really write that ?
I found a copy on the wayback machine, https://web.archive.org/web/20120511153436/http://goldrefining.110mb.com/Tutorials/BDG%20refining.htm

Here is a pdf printout of the tutorial.
View attachment Gold Recovery Butyl Diglyme.pdf

/Göran
 

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