Why Coconut Shell Activated Carbon is the Best Choice for Gold Adsorption in CIP/CIL Processes?

1. Introduction  

Gold mining operations rely heavily on **activated carbon** to recover gold from cyanide solutions in Carbon-in-Pulp

 (CIP) and Carbon-in-Leach (CIL) processes. Among all carbon types, **coconut shell activated carbon** stands out due

 to its **high adsorption rate, hardness, and regenerability**.  

This guide covers:  

✔ **Why coconut shell carbon outperforms coal-based carbon**  

✔ **Key technical parameters for gold recovery**  

✔ **How to select the best carbon for your mine**  

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2. Why Coconut Shell Carbon is Ideal for Gold Adsorption?

 ✅ Superior Adsorption Capacity

- **Higher microporosity** → Faster gold cyanide complex ([Au(CN)₂]⁻) adsorption  

- **Iodine value ≥1000 mg/g** (vs. 800–900 mg/g for coal-based carbon)  

 **✅ Excellent Hardness & Abrasion Resistance**  

- **Minimal carbon fines generation** in aggressive leaching tanks  

- **Lower carbon loss** during regeneration  

 **✅ Efficient Elution & Regeneration**  

- **Gold desorption rate ≥95%** with standard Zadra process  

- **Can be reactivated 5–7 times** without significant performance loss  

3.Key Technical Specifications for Gold Recovery

item		First Grade	Second Grade
Particle Size 6-12 Mesh  5-10Mesh	%	≥96	≥96
iodine Sorption Value	mg/g	≥1000	≥950
Intensity	%	≥98	≥98
Moisture	%	≤10	≤10
Filling Specific	g/cm³	0.45-0.5	0.48-0.53

Why Coconut Shell Wins?

✔ **Faster adsorption kinetics** (critical for high-flow CIP plants)  

✔ **Higher gold recovery rate** (up to 99.5% in optimized systems)  

✔ **Cleaner elutio

Tags: Coconut shell activated carbon for gold recovery, Gold adsorption activated carbon, CIP/CIL process activated carbon