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Application Sector

Gold Recovery

In CIL (carbon-in-leach) and CIP (carbon-in-pulp) gold recovery, activated carbon adsorbs the gold-cyanide complex from the leach slurry. The process demands extreme mechanical durability — carbon circulates through pumps and screens repeatedly, and fines mean lost gold.

ACGOLD 6SZ ACGOLD 8SFY
How It Works

The process, step by step

In CIL (carbon-in-leach) and CIP (carbon-in-pulp) gold recovery, activated carbon adsorbs the gold-cyanide complex from the leach slurry. The process demands extreme mechanical durability — carbon circulates through pumps and screens repeatedly, and fines mean lost gold.

01
Leach & load
Crushed ore is leached with cyanide solution. Gold-cyanide complex forms and is adsorbed onto carbon in agitated tanks.
02
Elution
Gold-loaded carbon is stripped using hot caustic solution. Gold transfers to eluate for electrowinning.
03
Reactivation
Stripped carbon is thermally reactivated at 650u00b0C+ to restore capacity. Durability determines how many cycles are viable.
Key Specifications
K Value (Freundlich)
u2265 45 (target 60u201365)
The best predictor of gold adsorption performance u2014 higher is better
CTC Activity
45u201365%
Correlates with micropore volume available for gold-cyanide complex adsorption
Hardness
u2265 98% (ASTM)
Critical u2014 low hardness generates fines that carry gold-loaded particles to tailings
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Grade Selection

Recommended grades for Gold Recovery

These grades are specifically optimised for this application. Full technical data sheets available on request.

ACGOLD 6SZ
→
Coconut

6u00d712 mesh, K value up to 65, CTC 60%. Standard CIL/CIP workhorse grade.
ACGOLD 8SFY
→
Coconut

8u00d716 mesh, enhanced fines yield. CTC 55u201360%, hardness 99%.
ACGOLD 6SFY
→
Coconut

Fast kinetics variant u2014 for high-throughput CIL circuits with short contact time.
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