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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Gold Ore Cyanidation (2 replies and 2 comments)

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tesaygo1
6 years ago
tesaygo1 6 years ago

Our country has alot of source of gold-copper ore. But no one attempt to try new technique to process to recover gold on a high gold+copper ore. Most people in my country only know how to recover gold using MERCURY, AND FEW our CYANIDING. I only known basic procedure of cyanidation of gold ore. 

In my experience alot of CYANIDE WAS CONSUME during processing of gold-copper ore. Which is really dissapointment, i recover few grams of gold but expend too much on cyanide. So no one here in our country attemp to process GOLD+COPPER ORE.

CAN ANYONE HERE TEACH ME NEW TECHNQUE, PROCEDURE.... 

By the ways guyz, i already try agitate the gold-copper ore in a sulfuric acid, then wash it to lowered the pH level, then agitate it again in NaCN(cyanide). But it doesnt work...

Please teach me. Thanks

d
David
6 years ago
David 6 years ago
Like

What are the head sample assays? 

  • %Cu
  • %Cu oxide
  • Au g/t

Any mineralogy data?

T
tesaygo1
6 years ago

Sorry i didnt send my ore into lab. But base for my testing the gold content of it is 16.5g/t and i think its a oxide, since the pyrite content was a little. But for copper content, i dont know how many percent.

Do you have idea? Can you help me for improvement?

T
Scotman
6 years ago
Scotman 6 years ago
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Hi. We have a method to recover both the copper and the gold using various acids and temperature, without the use of cyanide. As requested above, what is the mineralogy of the material - that's the starting point.

T
tesaygo1
6 years ago

Sorry for incomplete details for my question.
I didnt send my gold ore in a laboratory to determine its mineralogy, but i do some testing on it. Base from my testing,
1. My ore a color red, and have some a little bit of pryrite, i consider it as oxide.
2. I grind my ore up around 150micron,
3. Then recovering of gold using Hg or mercury. For every 1ton of ore i recover 10g using mercury way.
4. After the recovering of gold in Hg or mercury the tailing of it, i collect it for cyanidation.
5. During cyanidation of course i always maintain the correct pH level 10.5, and i also add cyanide, but my problem is its consume too much cyanide, since its a gold-copper ore.
I use activate carbon to recover the gold in cyanidation, and i can recover 6.5g of gold in my tailing...

By the way i am using agitation leaching. And the running time is about 24-30hrs.

Do you any idea for improvement and new technique?
We also has a sulfide gold-copper ore but i didnt yet attempt to process it since i read that sulfide ore was to difficult to process and the recovery rate was too low either.


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