With carbon-in-pulp, the ore is finely ground and the gold is solubilised using a cyanide leach in a series of tanks. The granular activated carbon is added to the leached slurry, where the carbon adsorbs the gold from the slurry solution and is then removed from the slurry by coarse screening. Often a series of five or six agitated tanks are used, where carbon and ore slurry are contacted in a staged countercurrent manner. This countercurrent operation increases the gold loading onto the carbon while maintaining a high recovery percentage.
Jacobi offers a full range of carbon products to serve the gold recovery industry. This includes standard granular activated carbon grades (GoldSorb™ 4500 and PICAGOLD™ G208AS), higher capacity granular activated carbon grades (GoldSorb™ 5500 and PICAGOLD™ G209AS), and highest premium activity granular activated carbon grades (PICAGOLD™ G210AS and PICAGOLD™ G210 Ultima).
The undisputed industry leading brand, our PICAGOLD™ and GoldSorb™ range of activated carbons, is designed for gold recovery processes and is used by gold plants all over the world. Our products provide excellent adsorption and elution characteristics, show outstanding hardness and high resistance to attrition. In addition, the strictest platelets control is used in order to minimise carbon fines generation in circuit and during regeneration. Less carbon fines in the circuit means less gold lost to the tailings!
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