In choosing an activated carbon for use in gold recovery, the characteristics below are of key importance.
Often called loading capacity, the adsorptive capacity of activated carbon refers to how much the activated carbon can adsorb. Adsorptive capacity is linked to the physical and chemical properties of the activated carbon.
The rate of adsorption is also largely affected by both physical and chemical properties of the activated carbon.
Mechanical Strength and Wear Resistance/Hardness
Mechanical strength is important in reducing losses because of attrition. Attrition is the breakdown of material into fines. Not only does this result
in carbon loss, but it also causes a loss in recoverable gold.
Particle Size Distribution
Particle size distribution is another key factor in choosing an activated carbon for gold recovery, as it is largely linked to adsorption rate.
Coconut shell-based carbons are the most commonly selected type of activated carbon for gold recovery. This type of carbon boasts numerous
characteristics that make it ideal for use in gold recovery, including superior hardness and pore structure.