Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

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Gold Recovery with activated Carbon (2 replies)

S
Seeker
1 year ago
Seeker 1 year ago

I have 10 grams of gold in 3 liters of sodium cyanide solution.

I want to recover it with coconut shell based granular activated carbon-size 2.36 mm.

How much carbon (by weight) do I need to recover this gold?

I would be burning this carbon for gold recovery.

Please help!

Thanks in Advance.

T
Todd H
1 year ago
Todd H 1 year ago

Activated carbon can effectively adsorb gold to ~3000 g of gold per tonne of carbon.  So if you have 10 grams of gold you should add ~ 3kg. You could also precipitate the gold and recover it that way.

https://www.911metallurgist.com/blog/gold-precipitation-methods#:~:text=Gold%20and%20silver%20are%20electronegative,solution%20is%20increased%20during%20precipitation.

Regards

Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com

r
rob riggir
1 year ago
rob riggir 1 year ago

Be careful burning the carbon as you can lose some of the gold in fly ash.

Best to ash it slowly in a muffle furnace and then smelt with fluxes to remove impurities.

Cheers


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