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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From Open Cast to Underground Ore (1 reply)

A
John KK
1 year ago
John KK 1 year ago

In six months, we are going to start getting gold ore from underground mining which is an extension of open-cast mining. There was no metallurgical test conducted on the variability of the ore that is planned to feed to the Process Plant on the assumption the ore behavior will be the same as the open-cast ore. Are there any tests that should have been done before the ore come to the process plant?

Mike
1 year ago
Mike 1 year ago
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Since you are posting in the hydrometallurgy section an assumption would be that your process is hydrometallurgical, if not what is it?

Going frpom that point, a key difference will be ore grade.  Most undergound ores are a higher grade than surface mined, primarily due to having less gangue (more selective mining).  From that your process will operate differently.  The biggest difference being that for the same basic parameters (feed rate, reagent dosage) the process will take longer due to the increase in metal loading.  Do not be surprised if your tails grade goes up significantly (metal loss).

This kind of change (open pit to underground) should always be conducted with detailed metallurgical studies.


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