The Usage of Activated Carbon in Gold Recovery

Coconut shell activated carbon appears as black amorphous particles with uniform particle size（6-12mesh，8-16mesh granular usually used for gold refining）, developed pores, large specific surface area, strong adsorption force, high mechanical strength, small bed resistance, good chemical stability, easy regeneration and wear resistance. Used for gold extraction and precious metal extraction.

In the world of precious metals, gold stands out as a symbol of wealth and prosperity. The process of extracting gold from ores involves various intricate steps, with one crucial element being activated carbon. Activated carbon plays a pivotal role in the gold recovery process, serving as a highly effective agent for extracting and refining this precious metal.

Coconut shell activated carbon appears as black amorphous particles with uniform particle size（6-12mesh，8-16mesh granular usually used for gold refining）, developed pores, large specific surface area, strong adsorption force, high mechanical strength, small bed resistance, good chemical stability, easy regeneration and wear resistance. Used for gold extraction and precious metal extraction, it not only has large adsorption capacity and rapid adsorption, but also greatly improves the gold recovery rate and equipment production efficiency, and can be used repeatedly three to four times.

Gold Recovery Process: Gold extraction from ores typically involves two primary methods: cyanidation and carbon-in-pulp (CIP) or carbon-in-leach (CIL) processes. These methods rely on the use of cyanide to dissolve gold from the ore, forming a gold-cyanide complex. Activated carbon then comes into play during the recovery phase.

Adsorption Mechanism: Activated carbon's exceptional surface area and porosity make it an ideal medium for adsorbing gold. The gold-cyanide complex in solution adheres to the carbon surface through a process known as adsorption. The porous structure of activated carbon provides ample sites for gold particles to bond, effectively concentrating the gold.  

Stripping and Elution: After the activated carbon has adsorbed a sufficient amount of gold, it is separated from the slurry and subjected to a process called elution. During elution, the gold-cyanide complex is reversed, and the gold is stripped from the carbon. This leaves the activated carbon ready for reuse in the adsorption process.  

Regeneration: To maintain the efficiency of activated carbon, it undergoes a regeneration process to remove impurities and any remaining gold. High-temperature heating, often using steam, helps desorb the gold and other contaminants, rejuvenating the activated carbon for subsequent cycles.  

Selective Adsorption: Activated carbon exhibits a strong affinity for gold, selectively adsorbing it over other metals present in the ore, facilitating the isolation of gold during the recovery process. Versatility:

Activated carbon can be tailored to suit specific ore types and processing conditions, making it a versatile tool for gold recovery in various mining scenarios.