Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)2017-04-04T06:57:31-04:00
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Removing xanthate collector from gold surface (4 replies and 3 comments)

omer.canieren
3 years ago
omer.canieren 3 years ago

Hello,

I'm conducting a study on gold flotation where I will use xanthate as a collector reagent. In this regard, I encountered a problem that is the xanthate is covering mineral surface with help of chemical adsorption. After that cyanide solution could not be able to reach gold surface for leaching process. And gold recovery decreased as a result.

How can I desorp to xanhtate from gold surface in order to increase recovery rate?

Thank you for your interest.

Mike Rockandel
3 years ago
Mike Rockandel 3 years ago

I have no idea if it is equivalent but in molybdenum flotation process, collector is released from pyrite and chalcopyrite, prior to collecting with fuel oil, by operating at high pH ~11 with a very negative ORP generated with NaHS. Alternately, Nalco has a reagent 7260 that is apparently able to react remove and tie up collector, avoiding or minimizing NaHS usage. Just an idea 🙂

omer.canieren
3 years ago

You are talking about depressing of sulphide minerals? I don't need it. After a chemical adsoption how can I remove reagent from mineral surface? This is some difficult cleaning due to chemical adsoption. I desired a recommendation with this aspect.

Mutassim
3 years ago
Mutassim 3 years ago

You can try to adsorb xanthate with activated carbon a head of cyanidation 

omer.canieren
3 years ago

My process already contains adsorption with activated carbon. Because of xanthate is attaching on mineral surface thanks to chemical adsoption you can not easily remove it from mineral surface.

Pabloski
3 years ago
Pabloski 3 years ago

I would take a look into bencines, gasolines, or a type of oil to avoid xanthate to adhere to mineral surface.. but this is just a hunch of course.

 

Good luck

David
3 years ago
David 3 years ago

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omer.canieren
3 years ago

Thank you dear friend.

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