Open-pit gold mine · West Africa
CIL circuit makeup carbon6×12 coconut-shell grade evaluated for attrition, activity and screen retention.
CIL Process · Gold Adsorption · Gold CIP
Precious Metal Recovery
Hard coconut-shell activated carbon adsorbs dissolved gold-cyanide complexes in CIP, CIL and related recovery circuits. Adsorption activity, particle size, hardness and resistance to attrition directly affect recovery and carbon losses.
Discuss Your ProjectIndustry overview
Adsorption designed around the process.
Activated Carbon for Precious Metal Recovery — Gold & Silver Adsorption Solutions
Activated carbon is the core adsorbent for modern precious metal hydrometallurgy, most famous for gold recovery from cyanide leachate. Its tailored pore structure has strong selective adsorption capacity for gold cyanide complexes, capturing dissolved gold and silver efficiently from leaching slurry or solution.
Our high-hardness coconut shell granular activated carbon is specially manufactured for mining CIP (Carbon in Pulp) and CIL (Carbon in Leach) processes, resisting abrasion and breakage under continuous agitation.
Core Application Scenarios
- Gold Ore CIP / CIL Mining Process Adsorb gold cyanide complex from ore leaching pulp. Loaded carbon is stripped and electrowinned to extract pure gold. This is the dominant process for large-scale gold mines worldwide.
- Silver Recovery from Leachate & Waste Liquid Recover dissolved silver from cyanide leach solutions, electroplating waste liquid and precious metal recycling wastewater. Reduce metal loss and improve resource utilization rate.
- E-waste & Catalyst Precious Metal Recycling Treat leachate from waste electronic boards, spent chemical catalysts and automotive catalysts. Recover trace gold, silver, platinum and palladium from secondary resources.
- Pregnant Solution Polishing & Metal Trapping Final polishing stage for leachate, capturing residual low-concentration precious metals to minimize metal discharge loss and maximize yield.
- Gold Mine Wastewater Treatment Remove residual cyanide compounds and trace heavy metals after metal extraction, helping mining sites meet environmental discharge requirements.
Why Choose Our Activated Carbon for Precious Metal Recovery
- Coconut shell base, high mechanical hardness, low attrition loss in agitated pulp tanks
- Optimized pore distribution for fast loading rate and high gold adsorption capacity
- Strong resistance to abrasion, less carbon fines generation, reduce gold loss with fine carbon
- Easy elution / stripping, good desorption performance for gold elution
- Stable batch quality, suitable for continuous 24h mining operation
- Bulk supply for large gold mines and precious metal refineries
How It Works
After gold ore is leached by cyanide solution, gold forms soluble gold-cyanide complex. When slurry contacts activated carbon, gold complex molecules are selectively adsorbed onto carbon surface. Gold-loaded carbon is screened out, then goes through stripping and electrowinning to separate and recover metallic gold. The regenerated carbon can be reused in the adsorption circuit.
Industries We Serve
Gold mines, silver mines, precious metal smelters, e-waste recycling plants, spent catalyst recovery factories, hydrometallurgical plants.
Contact our metallurgy technical team to select proper activated carbon based on ore properties, slurry concentration and target gold loading capacity.
Common carbon options: Coconut Shell · Nutshell Granular Activated Carbon
Product parameters
Activated carbon selection table.
Recommended starting ranges for technical discussion. Final values depend on the stream, test method and buyer specification.
| Carbon option | Iodine value | Typical size | Suitable conditions | Selection effect |
|---|---|---|---|---|
| CIP grade coconut GAC | 1000–1200 mg/g | 6×12 mesh | CIP adsorption trains | High hardness and rapid kinetics |
| CIL grade coconut GAC | 1000–1200 mg/g | 6×12 mesh | CIL tanks with carbon transfer | Low platelets and controlled size |
| Fine-mesh recovery carbon | 1000–1200 mg/g | 8×16 mesh | Specialized contact systems | Higher external area |
| Regeneration makeup carbon | Buyer specification | 6×12 mesh | Replacing circuit losses | Consistent activity and strength |
Treatment process
From inlet to verified outlet.
The exact equipment train is confirmed after reviewing site data and target limits.
- 01Ore leach & clarification
- 02Carbon adsorption (CIP/CIL)
- 03Loaded-carbon screening
- 04Elution & electrowinning
- 05Thermal regeneration & return
Project cases
International industrial references.
Buyer identities are withheld. The examples show representative project briefs and engineering approaches; performance is site-specific.
Gold recovery plant · Central Asia
Carbon losses during transferTighter particle-size control and hardness review supported circuit troubleshooting.
Heap-leach operation · Latin America
Pregnant-solution polishingGranular coconut carbon used in columns with loading tracked before elution.
Frequently asked questions
Technical answers for buyers.
Need a faster review? Send the available process data with your inquiry.
Yes. Share your process data and target limits so we can prepare a relevant evaluation sample. Freight is normally paid by the buyer.
Iodine value, particle size, strength, moisture and packing can be discussed against the equipment and required outlet quality.
Please provide the stream composition, target contaminants, inlet and outlet limits, flow, temperature, humidity or pH, contact time and current equipment.
Service life depends on actual contaminant loading, competing compounds and operating conditions. Pilot testing and breakthrough monitoring provide the most reliable estimate.