Pyrometallurgy: Roasting, Smelting, Refining & Electrowinning

Pyrometallurgy: Roasting, Smelting, Refining & Electrowinning 2017-03-23T09:55:18+00:00
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Elution Optimisation and modelling (7 replies and 1 comment)

Rahil Khan
1 year ago
Rahil Khan 1 year ago

AARL Method of Elution is used for gold recovery at our Plant. I really want to run an optimisation test on our elution circuit and i wish I could get some help with papers concerning elution Optimisation and what will cause high barren carbon assays. Is there a way to model the AARL System at the lab?

Obersturmbann
1 year ago
Obersturmbann 1 year ago

This paper is available on the net: http://is.gd/Dn0Tia . This has a lab set-up in it. I will try to send you another one that looks at Optimisation of AARL Elution specifically. When optimising the elution cycle, it is also important to consider the gold inventory that can be released from the CIP circuit in the calculation.

Sugar Watkins
1 year ago
Sugar Watkins 1 year ago
1 like by Mikhail

The elution process of gold from activated carbon seems to be one of the most neglected processes within the hydrometallurgy industry. It seems that most gold plants do not change any parameters after commissioning; therefore, no further optimisation occurs. The reason for this could be the relatively complex metallurgical process that is associated with gold elution from activated carbon.

Luckily a number of foundational publications exists and are relatively easily available:

The elution of gold from activated carbon using deionised water by R. J. DAVIDSON D. DUNCANSON: http://is.gd/YTwW10

Discussion on the kinetics of the elution of gold from activated carbon by N.M. Vegter: http://is.gd/3drkqp

Elution behaviour of metals from carbon M. JEFFREY, R. PLEYSIER, and K. BUNNEY: http://is.gd/Dn0Tia

Further studies on the elution of gold from activated carbon using water as the eluant by R. J. DAVIDSON and V. VERONESE. http://is.gd/tOtODt

There is also some very good publications that are a bit more difficult to come by - however; I consider the above papers a very good start to review the elution process.

I hope this assists you to gain a greater understanding of the gold elution process. Please let me know how you go.

Rahil Khan
1 year ago
Rahil Khan 1 year ago

Glad to have received such help. Downloaded the documents and reading through them. Will get back to you in due course!

Sugar Watkins
1 year ago
Sugar Watkins 1 year ago

Is your optimisation project still on track?

Rahil Khan
1 year ago
Rahil Khan 1 year ago

Yes. I am a bit stuck on getting the pilot circuit for elution. Modelling elution circuit is not easy from what I read in one of your papers.

Tony Verdeschi
1 year ago
Tony Verdeschi 1 year ago
1 like by Mikhail

Get your temperature (typically between 115-130) and the eluent flow rate right. These are the main factors affecting Elution performance.

Standartenfurer
1 year ago
Standartenfurer 1 year ago

I recently prepared Training Manuals for Geita Mine (AngloGold Ashanti), Tanzania, which included Elution of loaded carbon using the AARL technology, as well as the electro winning process.

Panashe
6 months ago

is there a possible way to in touch with you on general manuals for AARL process

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