• Elution and Carbon Reactivation Resource book

    adsorbing onto activated carbon Elution is the next step in the process, whereby the adsorption of the gold cyanide complex onto carbon is reversed Loaded carbon is removed from the CIL circuit and the gold stripped from the carbon using a number of treatment steps The result is a solution of high gold concentration (pregnant eluate) The gold can then be removed from the solution by

  • Ultrasonic elution of gold from activated carbon

    · The feasibility of the use of ultrasound for the improvement of elution of gold cyanide from activated carbon was demonstrated Elution of both the laboratory and plant loaded carbon with different eluants was enhanced considerably by sonication at 40 kHz, when compared with similar systems not sonicated The use of ultrasound made it possible to elute gold cyanide from activated carbon

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  • gold elution from activated carbon

    The adsorption and elution of Pt, Pd and Au cyanide using PGM cyanide solution onto the activated carbon revealed that with an increase, completion in 4 to 5 bed volumes (BV) at 80°C, while the elution of gold

  • ACTIVATED CARBON IN GOLD RECOVERY Kemix

    surface of the activated carbon into the interior The macropores allow for the rapid movement of adsorbates (species that will be adsorbed by the carbon, eg gold) into the activated carbon granules Mesopores (100 Å to 500 Å) these are the pores that branch off the macropores that serve to allow the adsorbates to leave the macropores

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  • Factors affecting the elution of gold cyanide from

    · The cyanideage 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 cyanideage on the desorption of gold cyanide, five samples of carbon were loaded with gold to the same level These gold loaded samples of carbon

  • Cited by: 22
  • The mechanism of elution of gold cyanide from activated

    · 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

  • Cited by: 8
  • Elution behaviour of metals from carbon

    activated carbon Gold and mercury are of primary interest, due to their value and environmental impact respectively A laboratory elution rig was commissioned to simulate industrial Zadra and AARL carbon elution conditions Mercury was found to elute most effectively in strong caustic cyanide solutions; gold was found to elute most effectively in hot low ionic strength solutions As cyanide

  • Function Of Activated Carbon For Gold Mining Austro

    · The golden adsorbed on the activated carbon is retrieved from the carbon by elution, typically with a sexy caustic aqueous cyanide solution Gold has been obtained by the system of cementation or by electrorefining of this remedy, while the carbon could be reused Activated carbon may be reused by washing with dilute hydrochloric acid (HCl) to eliminate metallic impurity and

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  • Activated Carbon in Gold Cyanidation

    How Activated Carbon Works
  • Factors affecting the elution of gold cyanide from

    · The cyanideage 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 cyanideage on the desorption of gold cyanide, five samples of carbon were loaded with gold to the same level These gold loaded samples of carbon

  • Carbon ReAdsorption of Gold from Eluate as an Alternative

    produced by the elution of silver and gold[211] However, since the advent of concentration technologies based on activated carbon, electrowinning process has been extensively used to recover gold and silver from very high and more concentrated solutions generated by the activated carbon elution process to produce higher grade doré[11] Electrowinning process provides superior

  • The mechanism of elution of gold cyanide from

    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

  • Elution behaviour of metals from carbon

    activated carbon Gold and mercury are of primary interest, due to their value and environmental impact respectively A laboratory elution rig was commissioned to simulate industrial Zadra and AARL carbon elution conditions Mercury was found to elute most effectively in strong caustic cyanide solutions; gold was found to elute most effectively in hot low ionic strength solutions As cyanide

  • Function Of Activated Carbon For Gold Mining Austro

    · The golden adsorbed on the activated carbon is retrieved from the carbon by elution, typically with a sexy caustic aqueous cyanide solution Gold has been obtained by the system of cementation or by electrorefining of this remedy, while the carbon could be reused Activated carbon may be reused by washing with dilute hydrochloric acid (HCl) to eliminate metallic impurity and

  • ACTIVATED CARBON IN GOLD RECOVERY Kemix

    •Desorption (Elution) •CarbonInPulp / CarbonInLeach •Circuit and activity profiles •Sampling, Sample Preparation and Sample Contamination •CarbonInLeach (CIL), CarbonInPulp (CIP), Carousel CIP and Process Selection 2 Activated Carbon What is Activated Carbon? Generic term for a family of highly porous carbonaceous materials, none of which can be characterised by a

  • The role of cyanide in the multicomponent elution of

    Internationally the most common technology for the elution of gold from activated carbon is the Anglo American Research Laboratories (AARL) method or modifications thereof This process consists of a pretreatment step in which the loaded carbon is soaked with cyanide at a high temperature, followed by a rinsing step using high quality water Van der Merwe (1991) and Stange (1991) showed that

  • Characterization and recovery of gold associated with fine

    The attrition of activated carbon, and the loss of gold associated with it, is of significant economic importance to the operation of a CIP/CIL circuit The focus of this study was on activated carbon recovered from an elution circuit which was deemed too fine for reuse Results of cyclosizer and laser particle size analysis identified that most

  • Carbon in pulp Wikipedia

    The final loaded carbon then is removed and washed before undergoing "elution" or desorption of gold cyanide at high temperature and pH Ethanol can also be used to desorb gold from activated carbon, but safety concerns have slowed its acceptance in the gold extraction industry Electrowinning The elute solution, normally consisting of caustic

  • Gold Precious Metals Extraction Activated Carbon

    The best known application for activated carbons in the mining sector is for the extraction and recovery of gold (Au), although it is also used for some other precious metals In the gold recovery industry, there are three main methods for extraction of the metal, all of which use granular activated carbon in the recovery of gold from cyanide leachate solutions:

  • Carbon ReAdsorption of Gold from Eluate as an Alternative

    produced by the elution of silver and gold[211] However, since the advent of concentration technologies based on activated carbon, electrowinning process has been extensively used to recover gold and silver from very high and more concentrated solutions generated by the activated carbon elution process to produce higher grade doré[11] Electrowinning process provides superior

  • Sabinet | The elution of gold from activated carbon using

    The pretreatment of goldloaded activated carbon with a relatively strong sodium cyanide solution prior to elution with deionized water at 90 to 125�Chas been shown to have a most beneficial effect on the elution of gold The findings emphasize the important role played by the calcium cation and the hydroxyl anion in effecting efficient elution of gold

  • Function Of Activated Carbon For Gold Mining Austro

    · The golden adsorbed on the activated carbon is retrieved from the carbon by elution, typically with a sexy caustic aqueous cyanide solution Gold has been obtained by the system of cementation or by electrorefining of this remedy, while the carbon could be reused Activated carbon may be reused by washing with dilute hydrochloric acid (HCl) to eliminate metallic impurity and

  • The mechanism of elution of gold cyanide from activated

    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

  • ACTIVATED CARBON IN GOLD RECOVERY Kemix

    •Desorption (Elution) •CarbonInPulp / CarbonInLeach •Circuit and activity profiles •Sampling, Sample Preparation and Sample Contamination •CarbonInLeach (CIL), CarbonInPulp (CIP), Carousel CIP and Process Selection 2 Activated Carbon What is Activated Carbon? Generic term for a family of highly porous carbonaceous materials, none of which can be characterised by a

  • Characterization and recovery of gold associated with fine

    The attrition of activated carbon, and the loss of gold associated with it, is of significant economic importance to the operation of a CIP/CIL circuit The focus of this study was on activated carbon recovered from an elution circuit which was deemed too fine for reuse Results of cyclosizer and laser particle size analysis identified that most

  • Gold Recovery Systems Macrotec

    During the gold mining elution process, activated carbon that is deemed too fine for reuse is removed Since these fine carbon residues contains on average between 100 to 400 grams of Gold per ton it makes a easy target to increase gold recovery In the past these carbon fines were discarded, or were processed in rudimentary furnaces losing most of the Gold in flue gas emissions Woodchips

  • Gold Precious Metals Extraction Activated Carbon

    The best known application for activated carbons in the mining sector is for the extraction and recovery of gold (Au), although it is also used for some other precious metals In the gold recovery industry, there are three main methods for extraction of the metal, all of which use granular activated carbon in the recovery of gold from cyanide leachate solutions:

  • Costsaving nanotechnology set to disrupt gold

    · The gold adsorbed by the activated carbon is then recovered through elution, before being regenerated (baked) in a rotary kiln at around 700

  • gold elution from activated carbon

    high elution for gold suppliers perkinspreschool The application of activated carbon for the adsorption and elution of The equilibrium loading of gold is exothermic in nature (Fleming and Nicol, 1984) which Higher cyanide concentration in the pretreatment step results in more of the supplier, was used for the adsorption and elution experimentation work

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