Applications – Goldsorb – Activated Carbon Solutions

Applications Overview

Activated carbon plays a crucial role in the gold mining industry. It enhances recovery rates by adsorbing gold from cyanide solutions, ensuring efficient and effective extraction processes.

Gold Recovery

Activated carbon is essential in the gold recovery process, adsorbing gold from cyanide solutions.

Water Treatment

Our activated carbon can also be used in water treatment processes, removing impurities and contaminants.

Scenario 1: Heap Leaching

Heap leaching is a process where activated carbon is used to adsorb gold from a heap of crushed ore. This method is cost-effective and efficient for low-grade ores.

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Discover how our activated carbon enhances gold recovery in heap leaching operations.

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Scenario 2: CIP Process

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.

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Learn how our activated carbon is optimized for the CIP process, ensuring maximum gold recovery.

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Scenario 3: CIL Process

The carbon-in-leach process integrates leaching and carbon-in-pulp into a single unit process operation in which the leach tanks are fitted with carbon retention screens and the carbon-in-pulp tanks are eliminated. The activated carbon is added in leach, with gold adsorption occurring nearly simultaneously with gold dissolution by the cyanide solution. This method is often employed when native carbon (as organics) is present in the gold ore and adsorbs the leached gold, preventing its recovery. The activated carbon used in the carbon-in-leach circuit preferentially adsorbs the gold over the native carbon and allows the gold to eventually be recovered for stripping.

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Find out how our activated carbon improves gold recovery in the CIL process.

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Uses of Activated Carbon in Gold Mining

Activated carbon plays a crucial role in various stages of gold mining. Its high adsorption capacity makes it indispensable for:

Carbon-In-Column is mostly used to recover gold and silver from heap leach solutions which are often high in solids content. This method involves the gold cyanide solution flowing through a series of fluidised bed columns in an up-flow configuration.
Carbon-In-Pulp, the ore is finely ground and the gold is solubilised using a cyanide leach in a series of tanks. Carbon is then added which adsorbs the gold. This method has a high gold recovery percentage.
Carbon-in-leach combines leaching with the carbon-in-pulp process, creating a single unit process operation. Usually this method is chosen when native carbon (a high organics load) is present in the gold ore, adsorbing the leached gold and preventing its recovery.

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