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

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction2017-04-04T06:57:36-04:00
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Hi I'm doing a trial with lead nitrate at the plant but it is not very successful. i have a q ... (2 replies)

Pillai
6 months ago
Pillai 6 months ago

Hi I'm doing a trial with lead nitrate at the plant but it is not very successful. 

i have a question, where to add, at first leach tank or pre leach tank ? is it make any difference between adding lead nitrate before cyanide added and after cyanide added?

Adding lead nitrate on the surface is enough or should be added into the Leach feed flow to make sure better mixing? 

Does anyone have more experience at the plant level?

Todd H
6 months ago
Todd H 6 months ago

Lead nitrate does not always work and I would say in my experience it is about 10% of the time that it makes a difference - if you have high sulfide concentration for example.  You should be able to add it just about anywhere in the circuit but before cyanide is preferable so that it can react with surfaces before the cyanide does.

Regards

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

Kaume
6 months ago
Kaume 6 months ago

Couple the Lead Nitrate addition with a good D.O level about 2 ppm and above. That might improve your results as well.


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