Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal

Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal2017-04-04T06:57:46-04:00
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Base metal in Gold Cyanidation Tailing (3 replies)

Darrel
1 month ago
Darrel 1 month ago

Hi all,

How to remove or precipitate base metal such Cu, Zn, Fe in solution tailings of cyanide destruction by INCO process. The regulation limit 2 ppm and the actual residual about 15 ppm. The head about 20ppm.

Our process running with pH 10-11.

Thank you for any advice

tesaygo1
1 month ago
tesaygo1 1 month ago

I am not that familiar with INCO procesa but most likely, you can use merril-crowe zinc precipitation.

Darrel
1 month ago
Darrel 1 month ago

Thanks Tesaygo1,

I think MC is to precipitate gold/silver using zinc dust, and the tails still contain zinc ionic, cyanide and others base metal. My question is how to precipitated this base metal in cyanide destruction process.

tesaygo1
1 month ago
tesaygo1 1 month ago

Hello Darrel,

 

From what i know, comparing Activated carbon and zinc for gold recovery has difference. Activated carbon is selective compare to zinc which precipitate not only gold and silver, but also Pt, Pd, Fe, Cu As etc.

Anyway, cyanide doesn't have strongly affirmity for base metal.

But my suggestion for your concern instead of destroying cyanide, why not recycle it which is more economical. From what i know there is two way to recycle it. Then the recycled NaCN can be reuse for sell.

🙂

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