Assaying, Microscopy, Mineralogy & XRF/XRD

Assaying, Microscopy, Mineralogy & XRF/XRD

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Activated carbon charcoal (3 replies and 1 comment)

k
koki
2 years ago
koki 2 years ago

i received a sample of activated carbon charcoal and used XRF to determine the loaded gold then i found that it was between 68-70% Au, my question is:

  1. how do i extract gold from the activated carbon charcoal
J
Jorge
2 years ago
Jorge 2 years ago
Like

The loaded carbon is introduced to the stripping circuit to get a solution containing gold.  The stripping circuit needs chemical reagents to remove the gold. There are several processes such as Zadra or AARL. The high grade gold solution is processed in electrolytic cells to recover the precious metals in the cathodes. Finally, the cathodes are melted to get a Dore bar. 

Follow the links to get more information on the stripping processes,

https://www.911metallurgist.com/atmospheric-elution-process/#:~:text=The%20normal%20elution%20system%20for,to%20the%20extruded%20carbon%20use.

https://www.911metallurgist.com/stripping-gold-silver-carbon/

 

k
koki
2 years ago
koki 2 years ago
Like

thank you, i cant use fire assay?

J
Jorge
2 years ago
Jorge 2 years ago
Like

It is possible to use fire assay. It is good practice to take a sample of fresh activated carbon to determine the gold content.

k
koki
2 years ago

thnx Jorge

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