Extracting palladium from gold ore residue?

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FARID

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Aug 8, 2014
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Hi there,
So here is my problem. I have been extracting gold from ore for some time now. I buy ore (dirt) containing gold from a person, then I crush it to very small pieces and then put it in cyanide bath. I then drain the bath and add activated carbon which absorbs the gold, I burn the carbon and get the gold. I buy the ore at a high price and I'm barely profitable. Recently, someone comes to buy my residue ore which I get from draining my cyanide bath. He buys it for dirt cheap money. I was curious as why would he do such a thing. I discovered that my residue ore contains platinum, silver and considerable amount of palladium. Most probably he has a method to extract these noble metals form my residue dirt. I was wondering if anyone could guide me on how to go about extracting these metals myself. I have been doing this for about a year now and I barely can keep my head above water. I would appreciate your help so much.
p.s.: I have been googling for sometime now and I have not come across some straight forward solution.
 

Lino1406

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Did you bubble air during extraction? At least silver and palladium should follow gold this way
 

Deano

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Feb 23, 2014
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359
Platinum group metals only dissolve to a large extent in heated cyanide solution, preferably around 120C.
This will require the use of a pressure vessel to stop the leach solution rapidly boiling away.
If you follow this method you will need a temperature probe and pressure relief valve to keep things safe.
Cyanide rates above 2 g/l sodium , potassium or calcium cyanide are used, pH around 11 is OK.
Usually a form of pumped recirculation is used for agitation.
Deano
 

FARID

New member
Joined
Aug 8, 2014
Messages
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Did you bubble air during extraction? At least silver and palladium should follow gold this way
Thank you for your response. I didn't get your point. Didi you mean that I injected air into the solution? What do you mean by "bubble air"?
Let's assume silver and palladium followed gold; How should I go about separating them?
 

FARID

New member
Joined
Aug 8, 2014
Messages
3
Platinum group metals only dissolve to a large extent in heated cyanide solution, preferably around 120C.
This will require the use of a pressure vessel to stop the leach solution rapidly boiling away.
If you follow this method you will need a temperature probe and pressure relief valve to keep things safe.
Cyanide rates above 2 g/l sodium , potassium or calcium cyanide are used, pH around 11 is OK.
Usually a form of pumped recirculation is used for agitation.
Deano
I really appreciate your response. If this works for me and palladium of the residue dirt is collected in cyanide, whould I be able to collect it using activated carbon or there is another way or better way?
 

Deano

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Joined
Feb 23, 2014
Messages
359
Simplest and cheapest collection of precious metal cyanides in solution is using activated carbon, recovery from the carbon by stripping or ashing.

Deano
 
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