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elution of gold from activated carbon pdf

2019-03-02T18:03:58+00:00
  • (PDF) Kinetics of elution of gold from activated carbon by ...

    Recently, the adsorption and elution of PGM cyanide complexes onto activated carbon has also been demonstrated and is similar to the activated carbon process for gold. The stripping of adsorbed ...

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  • [PDF] The elution of gold from activated carbon at room ...

    Corpus ID: 120099119. The elution of gold from activated carbon at room temperatures using sulphide solutions @article{Adams1994TheEO, title={The elution of gold from activated carbon at room temperatures using sulphide solutions}, author={M. Adams}, journal={Journal of The South African Institute of Mining and Metallurgy}, year={1994}, volume={94}, pages={187-198} }

  • Adsorption Capacity of Gold on Activated Carbon

    Activated carbon hasalready been used successfully in commercial processes1that require the removal of smallamounts ofgold(2mg.I-I) andsilverfromcyanide ... reduction ofthe Au(CN); complex to metallic gold. Their investigation26 into the elution ofgold adsorbed on coal carbon from cyanide solution showed that complete elution ofthe gold ...

  • Elution behaviour of metals from carbon

    Elution behaviour of metals from carbon M. JEFFREY, R. PLEYSIER, and K. BUNNEY Parker Centre (CSIRO Minerals), Australian Minerals Research Centre, Australia This study investigated the elution of precious and toxic metals from activated carbon. Gold and mercury are of primary interest, due to their value and environmental impact respectively.

  • The elution of gold from activated carbon using deionized ...

    Similar elution data are plotted in curve C, which illustrates the elution of gold from activated carbon loaded with 4,1 per cent gold, 1200 gjt silver, and 1700 gjt nickel (Fig. 6). In this series of elution investigations at high gold loadings, the carbon was not washed with acid before the elution, but this omission appeared to have little ...

  • [PDF] The elution of gold from activated carbon at room ...

    Corpus ID: 120099119. The elution of gold from activated carbon at room temperatures using sulphide solutions @article{Adams1994TheEO, title={The elution of gold from activated carbon at room temperatures using sulphide solutions}, author={M. Adams}, journal={Journal of The South African Institute of Mining and Metallurgy}, year={1994}, volume={94}, pages={187-198} }

  • Elution behaviour of metals from carbon

    Elution behaviour of metals from carbon M. JEFFREY, R. PLEYSIER, and K. BUNNEY Parker Centre (CSIRO Minerals), Australian Minerals Research Centre, Australia This study investigated the elution of precious and toxic metals from activated carbon. Gold and mercury are of primary interest, due to their value and environmental impact respectively.

  • Ultrasonic elution of gold from activated carbon Request PDF

    The elution of gold and silver from activated carbon using organic solvents and the reactivation of the eluted carbon. Report No. 6, Anglo-American Research Laboratories, Johannesburg, South Africa.

  • (PDF) Gold desorption from activated carbon with dilute ...

    The elution of gold and silver from activatedcarbon using organic solventsand the reactivationof the eluted carbon, Anglo American Research Laboratories, Report 6, Johannesburg, 1976. 9 Jankowska, H., Neffe, S. and Swiatkowski, A., Investigations of the electrochemical prop- ertiesof activated carbon and carbon black, Electrochim.

  • Factors affecting the elution of gold cyanide from ...

    Jan 01, 1994  The cyanide-age of the carbon, QN, is defined as the amount of cyanide, in g CN-/kg carbon, that has been Elution of gold cyanide from activated carbon 79 adsorbed or oxidised on the carbon. In an experiment to quantify the effect of cyanide-age on the desorption of gold cyanide, five samples of carbon were loaded with gold to the same level.

  • Modeling of gold elution from activated carbon using a ...

    Nov 01, 1997  A plug-flow model is described for the reactor mass balance of a typical AARL gold elution process. The model is in the form of a hyperbolic differential equation and was transformed using the method of characteristics. The transformed model was then solved simultaneously with models dependent on intraparticle surface diffusion and film transfer parameters. The solution was found to

  • THE ADSORPTION AND ELUTION OF PLATINUM GROUP

    The feasibility of eluting platinum and palladium cyanide complexes from activated carbon using an analogue of the AARL process was investigated. Platinum and palladium elute from activated carbon almost to completion in 4 to 5 bed volumes at 80°C, while the elution of gold

  • Activated Carbon in Gold Cyanidation

    Activated carbon is a critical component in the beneficiation of gold ore, allowing this widespread process to occur because of its ability to recover gold from the gold-cyanide complex. Depending on the deposit, some silver ores may also be processed via cyanidation. Here too, activated carbon is the catalyst for recovery of this precious metal.

  • WO2016104113A1 - Method for recovering gold from activated ...

    The purpose of the present invention is to make it possible: to, before gold is eluted, effectively remove copper, iron, and sulfur, which are impurities from the standpoint of gold recovery, from activated carbon on which gold has been adsorbed; and to efficiently elute the gold. Provided is a method for eluting gold (Au) from activated carbon on which at least sulfur (S) and Au have been ...

  • Elution of Gold from Activated Carbon Using Supercritical ...

    Aug 20, 2006  Abstract. A novel method for the desorption of gold from activated charcoal is reported. Ion pair solvation of sodium dicyanoaurate (I) (Na + Au(CN) 2 − by tributyl-phosphate facilitates the charge neutralization necessary for the elution of the ionic Au(CN) 2 − by the non-polar supercritical carbon dioxide. The method is sensitive to pressure and temperature, and the static (no CO 2 ...

  • The use of activated carbon for the recovery of gold and ...

    When activated carbon is used for the recovery of gold and silver from Witwatersrand gold-plant solutions, severe fouling of the carbon by calcium carbonate is experienced. Also, difficulty is encountered in the retention of the adsorbed silver on the carbon because it is displaced by gold.

  • Carbon in pulp - Wikipedia

    Carbon in pulp (CIP) is an extraction technique for recovery of gold which has been liberated into a cyanide solution as part of the gold cyanidation process.. Introduced in the early 1980s, Carbon in Pulp is regarded as a simple and cheap process. As such it is used in most industrial applications where the presence of competing silver or copper does not prohibit its use.

  • elution column gold processing

    problems at elution of gold processing . elution column gold processing gold elution column from china, processing machine sale gold elution column manufacturer gold ore crusher. applied heat elution heating systems for the gold . Read More. Carbon in pulp Wikipedia, the free encyclopedia....

  • carbon elution plant manufacturers in south africa cost

    carbon elution plant manufacturers in south africa cost. The initial adsorption of Pt, Pd, and Au were very fast and recoveries of these three metals were ... The Institute of Mining and Metallurgy, 2013. ... The of platinum, palladium, and gold from activated (650 g/t of Pt, Pd and Au each) after ... handle upsets remarkably well, and are.

  • The elution of gold from activated carbon using deionized ...

    Fig. I-The elution of gold, silver and nickel from activated carbon after pretreatment with 10 per cent potassium carbonate-5 per cent potassium hydroxide carbonate or the higher pH (hydroxide) was individually responsible for the efficient elution, or whether a strong hydroxide pretreatment in the absence of added carbon-ate would suffice. Fig ...

  • Discussion on the kinetics of the elution of gold from ...

    Discussion on the kinetics of the elution of gold from activated carbon where A is the superficial area of the carbon per unit mass of carbon. A mass balance of the gold on the activated carbon inside the reactor yields: [7] The initial conditions are given by: [8] [9] Equations [5] and [7] were solved, subject to

  • Carbon Re-Adsorption of Gold from Eluate as an Alternative ...

    activated carbon adsorption will be a better alternative to electrowinning as a method of recovering gold from eluate. The loaded activated carbon will be ashed and gold, obtained by smelting. between 45% g carbon sample obtained from a 15 g riffle split bulk sample was

  • Ultrasonic elution of gold from activated carbon ...

    Mar 01, 2003  The feasibility of using ultrasound to enhance the elution of gold from activated carbon was investigated. A laboratory-scale elution column immersed in an ultrasonic bath was used to investigate three eluant systems. The kinetic activity of the activated carbon was improved in the elution

  • The mechanism of elution of gold cyanide from activated carbon

    Numerous articles have appeared on the mechanism of the adsorption of gold cyanide onto activated carbon. In contrast, little information is available on the mechanism of elution of the adsorbed gold. It is the objective of this article to formulate such a mechanism on the basis of batch and column elution tests without analyzing adsorbed species on the carbon directly. The presence of ...

  • Modeling of gold elution from activated carbon using a ...

    Nov 01, 1997  A plug-flow model is described for the reactor mass balance of a typical AARL gold elution process. The model is in the form of a hyperbolic differential equation and was transformed using the method of characteristics. The transformed model was then solved simultaneously with models dependent on intraparticle surface diffusion and film transfer parameters. The solution was found to

  • The elution of gold from activated carbon at room ...

    Aug 01, 1994  Elution efficiencies of around 100 per cent were obtained in 4 hours with a single pass of eluant containing 0,2 M Na2S and 0,4 NaOH - about 10 bed-volumes of eluant The initial rate was slow over the first hour of elution, probably because the activated carbon catalysed the oxidation of

  • OPTIMIZING THE OPERATING CONDITIONS OF GOLD

    Base metals that have not been stripped during the elution will build up in the carbon and will affect the gold loading in the CIP process. The continuous decrease of gold content in the stream and the variability of flow rate and temperature affect the elution and

  • TECHNICAL PAPER - Purolite

    GOLD SELECTED ION EXCHANGE RESIN VS ACTIVATED CARBON FOR RECOVERY OF GOLD COMPARISON OF GOLD-SELECTIVE ION EXCHANGE RESINS AND ACTIVATED CARBON FOR THE RECOVERY OF GOLD FROM COPPER-GOLD LEACH LIQUORS By 1Johanna van Deventer, 2Volha Bazhko and 2Volha Yahorava 1Purolite, South Africa 2Mintek, South Africa Presenter and

  • CHAPTER 3. ACTIVATED CARBON COLUMNS PLANT DESIGN

    activated carbon columns so the decision of using GAC instead of PAC is obvious. The next step is the selection of a granular activated carbon. Chemviron carbon was chosen due to it is usually used in Belgium water companies. There are a number of criteria that should be considered in this selection.

  • (PDF) The application of activated carbon for the ...

    The application of activated carbon for the adsorption and elution of platinum group metals from dilute cyanide leach solutions by C.A. Snyders*, C.N. Mpinga*, S.M. Bradshaw*, G. Akdogan*, and J.J. Eksteen† Introduction The carbon-in-pulp or carbon-in-leach (CIP Synopsis and CIL) processes have been the main The research presented in this paper investigated the practical commercial processes ...

  • Elution of Gold from Activated Carbon Using Supercritical ...

    Aug 20, 2006  Abstract. A novel method for the desorption of gold from activated charcoal is reported. Ion pair solvation of sodium dicyanoaurate (I) (Na + Au(CN) 2 − by tributyl-phosphate facilitates the charge neutralization necessary for the elution of the ionic Au(CN) 2 − by the non-polar supercritical carbon dioxide. The method is sensitive to pressure and temperature, and the static (no CO 2 ...

  • The application of activated carbon for the adsorption and ...

    complexes from activated carbon using an analogue of the AARL process was investigated. Platinum and palladium elute from activated carbon almost to completion in 4 to 5 bed volumes at 80°C, while the elution of gold at this temperature is slow, with a significant amount of gold

  • Activated Carbon in Gold Cyanidation

    Activated carbon is a critical component in the beneficiation of gold ore, allowing this widespread process to occur because of its ability to recover gold from the gold-cyanide complex. Depending on the deposit, some silver ores may also be processed via cyanidation. Here too, activated carbon is the catalyst for recovery of this precious metal.