Gold recovery from loaded activated carbon using different

Jan 01, 2008· The next step is the elution of adsorbed gold from activated carbon with an efficient eluant. The most common commercial techniques for elution of gold cyanide from activated carbon are the Zadra and The Anglo American Research Laboratory (AARL) procedure.

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Activated Carbon in Gold Cyanidation

Elution and Carbon ReactivationResource book

Elution involves removing the gold from the activated carbon by reversing the adsorption process that occurs in the CIL circuit (refer Leach and Adsorption module).

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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.

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Carbon in pulpWikipedia


Activated carbon is used to adsorb gold that is leached by cyanide solution. The gold is then stripped from this loaded carbon by means of elution to form a concentrated eluate which is then processed for gold recovery by electrowinning. Essentially elution is the reverse of the adsorption process.

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Elution of gold from carbon by the micron solvent

The desorption of gold from activated carbon is promoted by adding organic solvents to aqueous cyanide solutions. At 6580°C the elution of gold is fast and is not affected by water quality. The Micron procedure involves pretreatment of the loaded carbon with NaCN/NaOH followed by elution with methanol vapour and condensate.

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(PDF) The Elution Of Gold From Activated Carbon At Room

One of the main bottlenecks in the carbon in pulp process for the recovery of gold is the elution procedure, which typically requires the heating of caustic cyanide eluants to high temperatures for

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Activated carbon is an adsorbent that increases the concentration of gold in the solution phase. For example, an ore containing 3 g/t is leached, mixed with carbon, which loads to 3 000 g/t, a concentration up of 1 000 times. Initially the gold is leached using cyanide, lime and oxygen.

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The Role of Cyanide in the Elution of Gold from Activated

The most important effect of. cyanide is its reaction with the functional groups on the carbon to. passivate the surface for the adsorption of anionic metal cyanides and. thereby promote the elution of gold. This passivation, caused by the. degradation of cyanide, is

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