I have a question when try to precipitate gold with hydrochloric acid and hydrogen peroxide after the reaction is done do i have to excess the acid before do the precipitation?
Ckbouda's thread.
- Thread starter Ckbouda
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Do you have ph strips or tester?
Yes you want it acidic I believe.
Also I believe the peroxide should have been minimal, or should be diluted some so as not to keep the gold in solution.
Do you have stannous test solution?
Yes you want it acidic I believe.
Also I believe the peroxide should have been minimal, or should be diluted some so as not to keep the gold in solution.
Do you have stannous test solution?
HCl/Peroxide should be ok.
But a few hours hot may be needed to decompose the Peroxide.
The good thing is that the HCl/Peroxide do not suffer from high pH so one can go straight to SMB or your precipitant if choice.
If you used hydrochloric and peroxide, the acid should still be good if you didn't over heat it, or add large amounts of it. Peroxide won't neutralize the acid like bleach does. Keeping the PH down
usually will help with precipitation especially if using SMB.
I see others have helped but I will put this up as well.
usually will help with precipitation especially if using SMB.
I see others have helped but I will put this up as well.
Refining without a Stannous testing solution is like running blindly in the forest.
Stannous are literally our eyes.
Find some Tin solder and dissolve it in HCl and you have Stannous.
It is also good to have some known Gold solution to test the Stannous against as it goes bad in time.
Ok i will do so
If i have a mixed bar of metals that is 480gr having also inside 6 grms of gold and 8 grams of silver inside the mix how can i reduce it without losing the gold and silver.if i deep it only inside hydrogen peroxide what will happen?will it reduce copper only?will i have losses in silver and gold?
How did this bar come to be?
Did you buy some Ebay or similar Gold bar?
The only way to loose your Gold or Silver is if you throw it away somehow.
No made it myself
Srap material
So, out of 480 grams, you have 6 grams of gold and 8 grams of silver. What is the remaining 466 grams?
Dave
One question comes to mind in addition the what Frugalrefiner asked.
Why?
It is now much harder to get your Silver and Gold out.
I sent drill samples to a person who done analysis and said so.....don't believe him somehow i think i have copper inside and other metals i put it inside hydrochloric acid but it doesn't reacts a lot
It looks like Brass so I'll guess it shows Copper and Zinc.
But you can share what the result of the test was.
Two questions:
1: Why did you make a bar of scrap? Doing so makes recovery much more difficult and costly.
2: What scrap materials was it made of? By being specific in answering, the method of recovery can be determined.
A bit of advice: Never do anything without a plan that shows what should be done in the event of either success and failure at each step.
Time for more coffee.
1: Why did you make a bar of scrap? Doing so makes recovery much more difficult and costly.
2: What scrap materials was it made of? By being specific in answering, the method of recovery can be determined.
A bit of advice: Never do anything without a plan that shows what should be done in the event of either success and failure at each step.
Time for more coffee.
Didn't mention about the other metals in the mix he only said that inside tha bar is only 6.18 grms of gold and 8 grms of silver
