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Step 11: Recovering your gold.


Recovering your gold in solution is one of the Coolest steps.

Whats needed,  a plastic spoon, and the sodium Bisulfate or Stumpout.

Simply add very small amounts of stumpout,   Your Mixture should start to look like the pictures I have provided. This is caused by the SO2 Gas which acts to chemically displace the gold in solution.

When the reaction has finished you will have driven out a majority of the chlorine, and replaced it with Sulfur.  Any gold which was trapped in the solution has now be come a brown precipitate at the bottom of your beaker.

Retest with Stannous chloride, if your reaction still turns purple you need to add more stumpout.

It will take appox 10 hours for the gold to competely settle,  the solution should be clear at this point.
can you use this method you have shown to use on gold plated and gold filled jewelery...to turn to 24 kt pure gold...because i have alot of different kt like 9,10,14 kt...can i turn that into 24kt
" Please do not skim, I covered this on the very first page. This process cannot be used on karat gold.
Will this work with gold on magnetic based parts ? <br>I have some old glass resistors from 70's, a few pounds anyway, I'd like to know before I mess it up.
No, ferrous metals will vastly reduce the effectiveness of chemical bath 1, the resulting pulp will not re-precipitate any gold I'm the final step. For magnetic conductors use Aqua Regina.
Really interesting procedure (never seen anything like this). Can you use the same procedure for pins containing gold? Can I use potassium metabisulfite instead of sodium Bisulfite (i cant find any)?
sodium bisulfite aka baking soda right? <br>
no baking soda is calcium carbonate. and yes you can use pottassium metabisulfite.
baking soda is actually sodium bicarbonate NaHCO3 calcium carbonate is CaCO3 which is a lime not baking soda
aka ph down? <br>
<p>no, see above</p>
metamisulfate
<p>lol, not exactly, Folks, Baking soda is sodium bicarbonate. Calcium carbonate is chalk, dolomite, and many other things. Just because it has a Sodium or a carbonate in the name does not make everything baking soda. Anyone attempting this procedure really needs to know the difference, if you don't, then you need to do a little research until you do, otherwise you might nerve gas yourself or blow yourself up. If you're not familiar with chemistry, google solutions, reactions, precipitating metals and salts out of solution, chemistry safety procedures, molecular bonds, ions in solution, MSDS Safety information for every chemical you use or make. This is a process that requires some knowledge about what you're doing, it won't work if you don't, or it will backfire on you. Do your homework and you will have success, if you don't do your homework you will fail, so start googling :O)</p>
<p>no, not even close to the same chemical, baking soda is sodium bicarbonate</p>
<p>If you don't know the difference between baking soda and sodium bisulfite, you need to keep away from all chemical compounds. </p>
That shouldnt be an issue. Instead of creating sodium chloride. You would create potassium chloride the resulting exchance. Should create so2 gas. Lol give it a try, just dont hold your face over the beaker if you added distilled water ..
Lol... *dumps acids down drain* realizes he has metal pipes still... *pipes disappear*
You may want to clarify in step 5 that it is the circuit board fingers not yours. ...there are those people out there who will put their fingers into acid...
I got two of 155 gram of melted cpu pins. Can i still use this process? Also i couldnt find klean strip muriatic acid, is 37% hcl from lab company ok?
Bom dia amigos estou precisando de ajuda para extrai ouro de placa dedos e processadores porem se possivel de agua regia um passo a passo com todos os quimicos.<br>Att.claudio
<p>who can tell me where I can find those acids?</p>
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<p>How do you recover the copper from the HCL, hydrogen peroxide and copper solution?</p>
<p>this is should be fun, I'av made some collection. but looking a safe way of doing it.</p>
<p>I'm confused. My understanding was that only AR can dissolve gold. You are saying that gold can be dissolved with HCL and Clorox? I thought nitric acid was required?</p>
<p>bonide stump out is smb it is just coled by an name they used years ago. smb is not sodium bicarb &quot;baking soda&quot; i should know i am a patented publised scientist.</p><p>Ron Donahue and pk11195, patents BS/MS/MDs/PhD</p>
<p>I did all steps, tests were good, when melted I got glass not gold. please help</p>
You mentioned putting 3G of flakes into the solution... what was the weight of 24K gold of the finished product? Thank you for your time. ?
Help !!!! When i added some of smb the solution become clear and no ppt although solution contain gold
<p>Hello there, Can I use Sodium bisulfate NaHSO4 instead of Sodium Metbisulfite MBS (Na2S2O5)?</p>
<p>According to the MSDS, Bonide Stumpout is sodium metabisulfite, which is NOT the same compound as sodium bisulfate, but you are correct - sodium bisulfate cannot be substituted for Stumpout. Clorox bleach is sodium hypochlorite; sodium hypochlorate does not exist. </p>
<p>Railies thanks for this info, I have come back to this instructable many times. Question about how much peroxide to use? On the gold forum I have seen it mentioned several times that if you use more than 25% peroxide in the first bath you may loose gold in the solution. The instuctions say 50%! would it be better to lower that and use a bubbler?</p>
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Hi Railes, <br> You had said that you always refine the 'gold fingers' because everything else is more of a process...I was wondering...what about the gold plated connector pins from Hard Drives...Floppy Drives...CD and DVD drives...MotherBoards and DaughterBoards...ISA Slots...PCI Slots...AGP Slots...Etc? <br> <br>Thanks, <br>Michael
<p>What you just described sounds similar to gold fingers. In case you didn't know, gold fingers are the contact points on, say, RAM sticks and I think they would be about the same.</p>
<p>cool!</p>
<p>when I did this process everything worked the way explained until I got to the end where I added the stump out to recover the gold from the solution. when I added the stump out it didn't turn the mud color and I got crystals at the bottom of my container. can you tell me what I did wrong? </p>
Anyone know of any legitimate buyers my worries are a few things like being ripped like at a pawn shop or denied based on a high weight amount for a years worth of gold recovery it would be a real disappointment if say I yield 1 pound bar and could collect my 20,000 as the price is based now
<p>I will be doing this for a school experiment and was wondering where to take the waste, would a normal waste disposal place accept the glass jars full of acid and metal or are there specific places to take this acid?</p><p>Also when combining the muratic acid and hydrogen peroxide about how violent is the reaction? would I be able to do that in a fume hood?</p>
You can also use aluminum foil in the copper chloride to drop out copper if any trace copper is in it the use of aluminum till no more reaction cause the acid in the solution to be used up leaving a clear liquid with powdered copper when it settles at the bottom of the container
And what about platinum?
Hey dose this method also remove the palladium from the ceramic capacitors? Or i guess what im askin is if this would work for palladium? Or would the process be different?.
<p>Our experiment color turns green when we added sol of HCl , H2SO4 and water. Does this mean gold is already separated in this process ??? We use gold pins obtained from processor</p>
<p>Our experiment color turns green when we added sol of HCl , H2SO4 and water. Does this mean gold is already separated in this process ??? We use gold pins obtained from processor</p>
Railes, not sure if you are keeping up with these postings.<br>But, I have done some gold recovering and one issue I'm having is the gold is so fine it goes through the filter paper.<br>So, is there a way to recover the fine gold that is in the muratic acid and hydrogen peroxide mix ????<br>Any help will be nice....<br>Thanks, Ronnie
<p>Wow! Super great Instructable! I am currently stripping the gold foils from my RAM chips using a 10:1 H202:H2S04 mix. I may try your method of further refining the gold once that finishes.</p>
<p>Hi I was wondering if you process the gold plated parts,and the computer chips magnetic and non magnetic.If you do what method do you use,Aqua regia?,reverse electroplating?One last thought how do you feel this method compares to Aqua Regia for dissolving the gold?Also very good instructable.Clear,and to the point.</p>

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Bio: I have been a refining consultant for 12 years,
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