Recovery of gold from fine carbon ash - Pyrometallurgy: Roasting, Smelting, Refining & Calcining + Electrowinning - Metallurgist & Mineral Processing Engineer

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Recovery of gold from fine carbon ash (7 replies)

8 years ago

I am looking at a quick and cost effective method to recover the gold in the fine carbon ashes we have. Currently we are trying to use smelting but we want to try some other means of getting the gold. Can I try Mercury in amalgamation and also gravity separation, which is feasible?

Standartenfurer

8 years ago

Standartenfurer 8 years ago

Amalgamation (mercury) should not even be considered due to the health and environmental risks. Gravity separation might work, but probably with low recovery because the gold is probably pretty fine sized (if you can see the gold it would probably work).

Smelting and leaching are your two best choices.

Sachin Prakash

8 years ago

Sachin Prakash 8 years ago

Okay. But can it be used to get the gold out of the ash?

Standartenfurer

8 years ago

Standartenfurer 8 years ago

Smelting and leaching have been the recognized methods for recovering gold from ashed carbon. The choice being how much ash! A little smelt, a lot leach.

Sachin Prakash

8 years ago

Sachin Prakash 8 years ago

So we can do both. But I also want to avoid smelting the bulk material because of cost of the reagents, borax.

Ben

8 years ago

Ben 8 years ago

1 like by David

Smelt with sodium carbonate with a little silica this very much cheaper. How much bulk material do you have?

Keisyakeith03

6 years ago

Keisyakeith03 6 years ago