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I'm trying to refine gold using nitric acid (NOT aqua regia). Will the non-gold components dissolve and leave behind pure gold, or will the fact that it's an alloy somehow prevent the individual components from dissolving?
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Properties of Gold Alloys
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#2
30 July 2010 - 07:41 PM
UC 
ydoaPs just lost the game
http://en.wikipedia....pletion_gilding
Nitric acid isn't magical and able to penetrate solid materials, so you'll only remove what little is on the surface, building up an impenetrable layer of pure gold
Have a look at this. By diluting the gold with silver (which is susceptible to nitric acid), you can penetrate the entire solid and leave behind only gold and other metals that do not dissolve in nitric acid:
Plenty of reading material here: http://goldrefiningforum.com/
Nitric acid isn't magical and able to penetrate solid materials, so you'll only remove what little is on the surface, building up an impenetrable layer of pure gold
Have a look at this. By diluting the gold with silver (which is susceptible to nitric acid), you can penetrate the entire solid and leave behind only gold and other metals that do not dissolve in nitric acid:
Plenty of reading material here: http://goldrefiningforum.com/
This post has been edited by UC: 30 July 2010 - 07:43 PM
Carnac: READ the vapors!
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#3
31 July 2010 - 12:22 AM
jerryshizzle123
Quark
Ah, your response was quite helpful. Thanks
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#4
11 August 2010 - 05:55 PM
dragonstar57
Lepton
can it be done with something that isn't as valuable as silver?
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#5
11 August 2010 - 06:12 PM
John Cuthber
Chemistry Expert
Yes, copper for example, but that needs more acid to dissolve it. Since you can get the silver back fairly easily it gets used in spite of its cost.
What's this signature thingy then? Did you know Santa only brings presents to people who click the + sign? -->
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#6
27 August 2010 - 04:01 AM
dragonstar57
Lepton
can someone post a video that also includes how to get the nearly as valuable silver back?
after all an ounce of silver can be worth as much as 350 dollars (or at least that what I have to pay for it)
after all an ounce of silver can be worth as much as 350 dollars (or at least that what I have to pay for it)
Quote
It is not closed-minded to reject claims that make no sense. If you can’t accept the possibility that an idea might be false, then you are the closed minded one. An open minded person will critically examine all claims but will not accept them if there is no reason to believe they are true or if there is reason to believe they are false.
dragonstar57's philosophy of technology: if its important put four times more than it could possibly ever need...then double it
"And, you can start a sentence with the word and, when and is a noun"-Or
"does that amply to or too"-And
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#7
30 August 2010 - 12:57 PM
Arthur Dent
Quark
cipher510, on 27 August 2010 - 04:01 AM, said:
...after all an ounce of silver can be worth as much as 350 dollars (or at least that what I have to pay for it)
Huh?
$350? The current value of an ounce troy of pure .999 silver is $19.17 as of this morning! Where do you get your silver? I don't think you're buying if from the right place that's for sure!
Even United Nuclear (which is known for their expensive prices) sells 2.6 g of pure silver for $2.50... that's less than $30 an ounce!
Robert
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#8
30 August 2010 - 05:45 PM
dragonstar57
Lepton
the idiot put the decimal point in the wrong place (the owner of the jewelry store) so it was 35.0 an oz which. i guess is higher than normal 
Quote
It is not closed-minded to reject claims that make no sense. If you can’t accept the possibility that an idea might be false, then you are the closed minded one. An open minded person will critically examine all claims but will not accept them if there is no reason to believe they are true or if there is reason to believe they are false.
dragonstar57's philosophy of technology: if its important put four times more than it could possibly ever need...then double it
"And, you can start a sentence with the word and, when and is a noun"-Or
"does that amply to or too"-And
- Posts: 642 | Joined: 01-July 10
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