United Chemical’s newly developed premium gold recovery coconut shell activated carbon series (specifically the high-performance grade AuCarb™ AC55) is engineered specifically for global gold metallurgical extraction operations. Featuring a highly advanced internal pore architecture and excellent abrasion resistance, it effectively minimizes precious metal lock-up in robust industrial circuits.
AuCarb™ AC55 Premium Gold Recovery Activated Carbon
High-Performance Coconut Shell Carbon for Gold Mining | 6x12 Mesh Standard
AuCarb™ AC55 is a premium grade of renewable, granular microporous activated Carbon specifically engineered by United Chemical for high-efficiency gold metallurgical recovery operations. Derived from selected high-quality Coconut Shells, AuCarb™ AC55 possesses an optimized sub-nanometer pore structure designed to selectively capture gold-cyanide complexes [Au(CN)₂]⁻. With an impressive gold adsorption capacity (K-value ≥28 Kg/t) and fast kinetics (R-value ≥55.0%), it serves as an excellent, cost-effective engineering choice for high-volume Carbon-in-Pulp (CIP), Carbon-in-Leach (CIL), VAT Leaching, Gold ore heap leaching, and carbon-in-column (CIC) extraction circuits.
Key Features and Process Benefits
• Enhanced Gold Adsorption: Strong K-value and R-value profiles optimize kinetics and ensure maximum loading efficiency during continuous adsorption cycles.
• Excellent Abrasion Resistance: Ball-pan hardness ≥99.0% significantly reduces structural deterioration and carbon fines generation caused by aggressive pulp agitation.
• Low Platelet Content: Strict manufacturing controls maintain a low platelet level (≤5.0%), mitigating screen pegging and maintaining smooth slurry fluidics.
• Consistent Pore Structure: Minimizes soluble gold losses in tailing slurries while preserving outstanding thermal and chemical reactivation properties across multiple elution loops.
AuCarb™ AC55 Premium Coconut Shell Activated Carbon for Gold Recovery
The Elite Choice for High-Capacity, High-Grade Gold Extraction.
United Chemical’s premium gold recovery coconut shell Activated Carbon series (specifically the high-end AuCarb™ AC55) is engineered specifically for global gold metallurgical operations managing large-scale capacities and high-grade ores. Designed to rival top-tier international standards (e.g., Jacobi G209S), it ensures exceptional gold recovery rates and absolute minimal mechanical wear.
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Critical Performance Benchmarks: Why It Matters?
Global premium gold mines rely on AuCarb™ AC55 to safeguard their most profitable extraction circuits. By balancing extreme mechanical rigidity with superior adsorption kinetics, AC55 outperforms industry standards:
What Makes AuCarb™ AC55 Different?
Our competitive edge lies in strict material selection and advanced processing capabilities, engineered for premium operations:
Selected Premium Coconut Shell Raw Materials: Only mature high-density coconut shells sourced from Southeast Asia are selected for production.
Advanced Steam Activation Technology: Physical steam activation develops highly optimized microporous structures specifically for gold adsorption.
International Quality Standards: Products are stringently tested according to ASTM and AARL standards.
Complete Traceability: Every shipment is supported by complete documentation including TDS, COA, and SDS.
AuCarb™ Series Selection Matrix
United Chemical provides a complete matrix of activated carbons tailored for different leaching processes and ore grades:
| Grade | Core Application | Hardness | CTC / Butane Activity | Typical Size |
|---|---|---|---|---|
| AuCarb™ BC1100 | Heap Leach / CIC | 99% | \ | 6x12 Mesh |
| AuCarb™ AC50 | Standard CIP / CIL | 99% | ≥ 50% / 19.5% | 6x12 Mesh |
| AuCarb™ AC55 | Enhanced CIP / CIL | 99% | ≥ 55% / 21% | 6x12 Mesh |
| AuCarb™ AC60 | Premium CIP / CIL | 99% | ≥ 60% / 23.0% | 8x16 / 6x12 Mesh |
Technical Specifications: AuCarb™ AC55
The AC55 series delivers robust mechanical strength and elite adsorption capacity, perfectly tuned for high-grade Carbon-In-Pulp (CIP) and Carbon-In-Leach (CIL) circuits.
Physical Parameters
| Property | Test Method | Guaranteed Spec |
|---|---|---|
| Raw Material | / | Premium Coconut Shell |
| Particle Size (>6 mesh) | ASTM D2862 | < 5.0% |
| Particle Size (<12 mesh) | ASTM D2862 | < 4.0% |
| Apparent Density | ASTM D2854 | 0.48 - 0.55 g/ml |
| Ball-Pan Hardness | ASTM D3802 | ≥ 99.0% |
| CTC | ASTM D3467 | ≥ 55.0% |
| Butane Activity | ASTM D5742 | ≥ 21% |
| Total Ash Content | ASTM D2866 | ≤ 3.0% |
| Moisture Content | ASTM D2867 | ≤ 5.0% |
Metallurgical Properties
| Property | Test Method | Guaranteed Spec |
|---|---|---|
| Platelet Content | A.A.R.L | ≤ 5.0% |
| Attrition | A.A.R.L | ≤ 1.5% |
| K Value (Gold Capacity) | A.A.R.L | ≥ 28.0 kg/t |
| R Value (Gold Adsorption) | A.A.R.L | ≥ 55.0% |
K-Value / R-Value Adsorption Kinetics
To maximize operational profitability in high-grade extraction, understanding key carbon metrics is essential:
Why K Value Matters: A higher K value (≥28 kg/t) indicates a stronger unit capacity for carbon to load gold, crucial for high-grade ores.
Why R Value Matters (Adsorption Rate): The R value determines the kinetic speed. A reliable R-value curve (≥55%) ensures steady gold extraction metrics across multiple contactor tanks.
Why Hardness Matters: Hardness directly determines the attrition rate, preventing the loss of soluble gold to the tailings.
Why Low Attrition Matters: Minimizing attrition directly reduces the flow of gold into the tailings dams.
How Activated Carbon Adsorbs Gold
The extraction of gold relies on the successful adsorption of the gold-cyanide complex ion, [Au(CN)2]-, into the carbon's micropore structure. Mass transfer and adsorption kinetics dictate the speed and efficiency of this process.
For the AuCarb™ AC55 series, physical testing confirms that 91.76% of its surface area is composed of strict micropores (0.35~2 nm), making its internal architecture geometrically matched to trap the [Au(CN)2]- complex securely.
Metallurgical Applications
AuCarb™ AC55 is engineered for diverse metallurgical pathways, including Carbon-in-Pulp (CIP) optimized for high slurry densities, Carbon-in-Leach (CIL) for simultaneous leaching, Carbon-in-Column (CIC) ensuring ideal fluidization, and VAT Leaching.
Typical CIP/CIL Design Parameters Reference
For continuous processing loops, AuCarb™ AC55 flawlessly fits a standard CIP circuit treating 125,000 tonnes of gold ore per month (Head grade: 4g/t, pulp flow rate: 240 m³/h). Across 6 contactors with volumes of 160 m³ each, it stabilizes a carbon mass of 5 tonnes per tank under a transfer velocity of 2.75 tonnes per day. For expanding high-volume CIL extraction environments, it easily sustains steady-state throughput profiles up to 250,000 tonnes of ore monthly.
| Treatment Capacity | CIP Configuration(125000t per month) | CIL Configuration(250000t per month) |
|---|---|---|
| Gold Head Grade | 4 g/t | 4 g/t |
| Pulp Flow Rate | 240 m³/h | 475 m³/h |
| No. of Contactors | 6 Contactors | 8 Contactors |
| Volume of Contactors | 160 m³ | 1780 m³ |
| Mass of AuCarb™ | 5 t per contactor | 20 t per contactor |
| Rate of AuCarb™ Transfer | 2.75 t per day | 5.5 t per day |
Regeneration & Reactivation
Maintaining long-term carbon vitality is crucial for minimizing OPEX:
Acid Washing: Removes inorganic foulants like calcium and magnesium scale.
Thermal Reactivation: Restores microporous structure via kilns at high temperatures.
Lifespan: AuCarb™ features exceptionally high reactivation efficiency, surviving numerous cycles without structural collapse.
Global Case Studies & Conventional Comparison
Our products drive metallurgical success globally. For example, at a Tanzania Gold Mine, switching to the AuCarb™ series achieved a gold recovery increase of +2.3%, reduced overall carbon consumption by -18%, and lowered carbon loss by -22%. Similar successes in fluidics and pressure-drop reduction have been recorded in Indonesia Heap Leaching and Burkina Faso CIL plants.
| Parameter | AuCarb™ AC55 | Conventional Carbon |
|---|---|---|
| Hardness | 99% | 95% |
| CTC & Butane Activity | ≥ 55% / 21% | 45% / 17.0% |
| K Value (kg/t) | 28 | 20 |
| R Value (%) | 55 | 40 |
| Attrition | 1.5% | 3.0%+ |
Manufacturing, Logistics & ESG
The United Chemical Difference: Raw Coconut Shell Sourcing → Carbonization → High-Temperature Steam Activation → Crushing → Precise Screening → Laboratory Testing → Packaging → Shipment.
Quality Assurance Protocol: Every batch undergoes stringent testing using ASTM and AARL standards. We welcome third-party inspections and maintain complete batch traceability.
Packaging & Shipping: strictly packed in 25kg heavy-duty laminated elastic PE bags. We offer containerized global shipping under FOB, CIF, CFR terms.
Safety & Environmental: We are committed to sustainable coconut shell sourcing, strict carbon recycling practices, and maintaining full ESG environmental compliance.
Frequently Asked Questions & Downloads
What is the best activated carbon for CIP plants? AuCarb™ AC55 is meticulously engineered for the abrasion and kinetic demands of high-grade CIP.
What is K value & R value? K value represents equilibrium loading capacity; R value dictates the kinetic rate of gold adsorption.
Why is my carbon fouling? Fouling can occur from organic matter or scale; proper acid washing and thermal reactivation are necessary.
Empower your engineering team:
Technical Data Sheet (TDS)
Certificate of Analysis (COA)
Safety Data Sheet (SDS)
Carbon Selection Guide
Ready to Improve Your Gold Recovery?
Since 1999, United Chemical has been a leading global supplier. We provide not only activated carbon but complete gold recovery solutions, including Product Selection, Laboratory Testing, Site Technical Support, and Carbon Management.
Request TDS, Pricing, and Technical Consultation today:
WhatsApp:+86 173 9270 5576 | Email:info@unitedchemicalcn.com
Technical Reference & Nomenclature Index
For global procurement verification and metallurgical engineering consultations, United Chemical’s AuCarb™ AC55 aligns with various international trade descriptions:
Gold recovery activated carbon
Gold extraction activated carbon
Coconut shell activated carbon for gold recovery
Gold mining activated carbon
Activated carbon for gold extraction
Coconut activated carbon gold mining
Gold adsorption activated carbon
Gold processing activated carbon
Coconut shell charcoal for gold extraction
Premium gold recovery carbon
Active carbon for gold recovery
Activated charcoal for gold mining
Gold cyanide adsorption carbon
CIP activated carbon (Carbon-in-Pulp)
CIL activated carbon (Carbon-in-Leach)
CIC activated carbon (Carbon-in-Column)
Heap leaching activated carbon
Vat leaching activated carbon
Carbon in pulp gold recovery
Carbon in leach gold extraction
Gold cyanidation process carbon
Gold leaching carbon adsorption
Carbon desorption gold process
Elution circuit activated carbon
Gold elution carbon
Tailings gold recovery carbon
High hardness activated carbon gold
Attrition resistant carbon gold recovery
Gold activated carbon R value
Gold activated carbon K value
Ball-pan hardness activated carbon
Low platelet generation carbon gold
High gold loading capacity carbon
Microporous carbon for gold cyanide
Low ash activated carbon gold mining
Preg-robbing prevention activated carbon
Gold cyanide complex adsorption
Activated carbon iodine value gold mining
CTC activated carbon gold
6x12 mesh activated carbon gold
8x16 mesh activated carbon gold
6x16 mesh gold recovery carbon
12x30 mesh activated carbon gold
Granular activated carbon for gold
Irregular granular carbon gold mining
High density gold carbon
Gold carbon particle size distribution
Gold recovery activated carbon manufacturer
Coconut shell carbon supplier for gold mines
CIP activated carbon factory
Wholesale gold extraction carbon
Activated carbon price per ton gold mining
Bulk activated carbon for gold recovery
Gold mining chemicals supplier
CIL activated carbon exporter
Gold recovery carbon FOB price
Buy activated carbon for CIP plant
Premium coconut carbon manufacturer
Gold carbon 25kg bag / 500kg jumbo bag
Activated carbon regeneration gold plant
Thermal regeneration of carbon gold
Acid washing activated carbon gold
Carbon reactivation efficiency gold
Carbon attrition loss gold plant
Reducing soluble gold loss
Gold carbon fouling prevention
Carbon inventory management gold CIP
Carbon transfer rate CIL
Gold carbon stripping process
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