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Started by kahonde
hie, can caustic soda at pH 12 affect carbon adsorption of gold ?
Last commented on by kahonde
we sometimes reach pHs of around 12,let me read the pdfs thank you.
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Started by kahonde
hello i'm using vat leaching but im having a problem with the carbon absorptivity, usually we would get 1 kg recovery but these days we are only achieving atleast 500g. i have tried to use surf in hope to get some improvement, i'm yet to check the r...
Last commented on by Wadzanayi
Surf (soap) contains sulfonic acid which is a an organic carbon foulant thus lowering carbon activity or absorptivity....
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Started by Dan88
Good day, I am trying to figure out the optimal flow rate for a large tank. I am used to 30 ton VAT tanks but have since started using a 150 ton VAT tank. I know that with a 30 ton tank the flow rate is around 5 l/min but if i use the same flow rat...
Last replied to by kahonde
0.1% is the ideal but if you leaching high grade ores you might need to use 0.18-0.2%  
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Started by Louise
I just want to ask on how to calculate the harvest time of carbon in cyanide leaching. Its the time that the carbon will reach 1500 grams/tonne? The carbon loading is linear. Thank you for answering 🙂
Last replied to by Wayne
Hello Louise, I am not sure how you are set up, however in our Demonstration plant we had 7 carbon columns arranged in ...
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Started by Irene Ibz
hello, I have been given a project on carbon inventory and carbon activity improvement. Currently in our plant we are getting a huge change in carbon inventory in CIL circuit during opening and closing stock. Also the activity of carbon is lowering....
Last replied to by Wayne
Hi Irene, I can only speak on what I have learned in a demonstration plant but it should be similar.  Loading, unloadi...
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Started by Jaime Jacob
Hi my name is Jaime I'm trying to Learn modelling. I would like to model the moving the solution leach in heap leaching and may be the metal extraction. I have seen many of this studies of modelling in differente journals but only show some equatio...
Last replied to by David
Thanks Zander.  Jaime, you will find really great heap leach courses at http://www.altamet.com.au/short-courses/ and ...
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136
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Started by Biglizer
Hello everyone Is vat leaching the best method to extract high grade gold with coarser particle, if not why? What is the best method of extraction besides mercury amalgamation Thanks 
Last replied to by max skinner
You will need to get the course gold out first, like anything larger than about 100 mesh. Course gold just doe's not lea...
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135
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Started by ramine
hello i working in Crud Recovery in copper SX (solvent extraction) i separate the organic phase by bentonite clay then organic phase separated from crud ... i can load this organic to system ?
Last replied to by kevinextraction
Commonly, we pump polluted organic phase into mixer, stewing and then open the valve on the bottom of the tank, release ...
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147
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Started by Adelnini
Clay from ROM is 10%, and it contains 0.05% copper.. What should we do to clay before feeding to SABC? Can we still recover Cu from clay?
Last replied to by Sugar Watkins
0.05% copper = What does it matter THAT IS NOT ORE. On an industrial scale, clay is there to stay. 10% is bad news. What...
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Started by kenyaAurefiner
USING ACTIVATED CARBON: Hello there... Could someone help me with info about using activated carbon in heap leaching method. We have acquired goldix 570 and realized the recommended method by using activated carbon. Considering we have never used it ...
Last replied to by Cyanide
Hello Adam, you handle Goldix just the same as if it were cyanide; from carbon loading to stripping.
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353
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Started by Handerson
Gold Dressing Agent (GDA) product that has Chinese origin, meets environmental requirements and reduces the leaching time and energy costs and effluent treatment.Do you know any application on a large scale? I'm the product for testing, I know some s...
Last commented on by McDeejs
your emai please
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168
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Started by Mikhail
Dear colleagues Does anyone have any information on possible leaching of water amino acid solutions of gold, of peptides, proteins, nucleic acids
Last commented on by Mikhail
Thank you very much, I will be very grateful pinyasov.estageo@mail.ru
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Started by nurdyme
A mine is planning on increasing the leaching density from 40% solids to around 50% solids, with the aim of increasing the dissolution rates, although right now they are working at recoveries of 85%. what would be the effect on the kinetics of diss...
Last replied to by nurdyme
FINISHED LAST WEEK  Leach test at different densities Methodology  Bulk samples of thickener underflow was used ...
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Started by ChemEngStudent
It will be much appreciated if i can get good articles or information about bioleaching of gold and how it differs from more traditional methods.     Thanks
Last replied to by John Koenig
Gold extractability was measured by cyanide leaching in the same manner before and after biooxidation. Small samples of...
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Started by firebird
Hi everyone. I am now engaged in a CIL circuit. I tried to calculate my final gold bullion recovery after smelting but I cant. The problem is I had a total of 76kg gold fed to the grinding for 11 days.in the final circuit of the CIL a total of 4kg of...
Last replied to by Greg Henderson
Reconciling feed gold with back-calculated gold based on change in inventory + dore gold + tails gold can be tricky as ...

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