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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FeEDTA Concentration (1 reply and 1 comment)

3 years ago
Seeker 3 years ago

For gold dissolution in Sodium Thiosulfate solution, I have to add FeEDTA at a concentration of 0.002 mole/L. I have with me Ferric sulfate and EDTA (Ethylenediaminetetraacetic acid) separately. Please advise me how many grams of ferric sulfate and EDTA I have to dissolve into the solution respectively.


3 years ago
Jorge 3 years ago
1 like by David

I can suggest the following quantities,

- First, dissolve 33.3 g of disodium EDTA in 500 ml of water (@ 30 C), containing 100 mL of 1N sodium hydroxide.

- Second, dissolve 24.9 g of FeSO4.7H20 in 300 ml of hot water (@ 70 C), containing 4 mL of 1N sulfuric acid.

- Mix both solutions, add water to get approximately 1000 mL. Make sure the solution is homogeneous. 

The final solution contents 5000 mg of Fe per liter


3 years ago

Thanks a lot for your advice. Could you please suggest a simpler way for this?

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