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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Titration - calculate free cyanide (3 replies)

J
oro
4 years ago
oro 4 years ago

I recently built and started up a small CIP plant and came across this simple titration calculation recommended by A K Williams.  The math is simple and I assume the formula is accurate - but would like to confirm.   As follows:

1. make up 1 liter of solution: distilled water + 13.07 grams of silver nitrate

2. titrate as normal using 100ml of filtrate / sample

3. the ml of silver nitrate consumed divided by 10 = the % of free cyanide. Example: 1.5 ml of silver nitrate consumed = .15% of free cyanide

Second question: to maintain even a tiny percentage of free cyanide in the last tank is adequate yes?

Thanks in advance!

J
Jorge
4 years ago
Jorge 4 years ago
J
oro
4 years ago
oro 4 years ago

Thank you Jorge, I'll review that information.   

I would still like to know if the method I describe is accurate. 

L
Lazaro
4 years ago
Lazaro 4 years ago

Hello!! I want to know how can I determine if the leaching is complete or not during vat leaching  process of Gold, and if there is a method what are the chemistry behind that process.Thanks


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