Leaching is the most common process for extracting gold from ore deposits, where cyanide and other chemicals are used. Activated carbon (AC) is essential in this process, either in granular or granular form, depending on the size of the operation and environmental requirements.
Activated carbon to recover gold from leaching solutions
Activated carbon is widely used in mining to recover gold from cyanide leach solutions. This porous material adsorbs metal ions and acids, capturing contaminants in its pores and removing them from solution, a process known as adsorption.
Gold adsorption with activated carbon
The gold-bearing solution is pumped through activated carbon columns, where the gold adheres to the material. The carbon can then be regenerated by heating and exposing it to air, which releases the adsorbed gold for subsequent recovery.
Processes for gold recovery
After adsorbing the gold, the carbon is removed, washed, and the gold is extracted into an aqueous solution. The Zadra or AARL processes are used to extract the gold from solution, generating a high purity gold slurry. The Zadra process uses sulfur, while the AARL process uses hydrogen peroxide.
Consultancy in the application of activated carbon for gold recovery
At Carbotecnia, we have a team of experts to assist you in every step of the activated carbon leaching process. We offer high quality sulfur-free carbon products, such as the Carboro 6×12 or 8×16a low ash activated carbon ideal for gold recovery. This product has 99% moisture, 0.5% ash and 0.1% iron content.
We also offer standard and NSF grades, with similar characteristics and available in presentations from 25 kg to bigbas (supersacks) of 500 kg.
Types of sulfur-free activated carbon
Our products, such as Carboro made from coconut shells, are highly effective thanks to their excellent adsorption capacity and high activity, ideal for removing organic compounds from wastewater and specific applications in gold mining.
Activated carbon granules for gold recovery
It is critical to use the right form of activated carbon for your operation. If you want to recover gold from a cyanide leach solution, granular or bead carbon is ideal, as its larger surface area allows the gold to be captured more efficiently.

Ask for advice on the application of activated charcoal
At Carbotecnia, our experts will help you choose the best product for your application and needs. Contact us for advice on the correct application of activated carbon to recover gold and optimize your leaching process.
