Advanced Gold Extraction Chemicals for South American Metallurgy
Conquering Complex Ores from the High Andes to the Amazon Basin
United Chemical supplies guaranteed purity AuCyan™ Sodium Cyanide NaCN (≥98.3%), AuCarb™ Gold Recovery Coconut Shell Activated Carbon (≥99% Hardness), and non-hazardous AuLeach™ Gold Leaching Agent (GDA) to empower Heap leaching, Vat leaching, CIP, CIL, and CIC operations across Peru, Brazil, Colombia, Chile, and the Guiana Shield.
The South American Mining Landscape: A Continent of Metallurgical Extremes
South America is an undisputed powerhouse in global gold production, yet it presents some of the most complex geological and metallurgical challenges on the planet. From the towering, high-altitude epithermal and porphyry deposits of the Andean Belt (Peru, Chile, Colombia, Ecuador, Bolivia, Argentina) to the dense, clay-rich laterite and saprolite soils of the Amazon Basin and Guiana Shield (Brazil, Suriname, Guyana, French Guiana, Venezuela), mineral processing facilities must be equipped with world-class, uncompromising chemical reagents.
United Chemical stands at the forefront of this industrial demand. With a verified export footprint spanning 77+ countries, we manufacture and deliver chemical solutions engineered to penetrate refractory ores, withstand severe mechanical attrition, and comply with the increasingly strict Environmental, Social, and Governance (ESG) frameworks of South American governments.
To ensure secure and reliable supply chains, we strictly operate via maritime ocean freight. We support all continental operations under FOB (China ports) or CIF terms directly to major hubs—such as Port of Callao (Peru), Port of Santos (Brazil), Port of Buenaventura (Colombia), and Port of Guayaquil (Ecuador). Our operations require a Minimum Order Quantity (MOQ) of 1x20' FCL, guaranteeing factory-direct pricing and continuous supply for Carbon-in-Pulp (CIP), Carbon-in-Leach (CIL), Carbon-in-Column (CIC), Heap leaching, and Vat leaching circuits.
1. Unlocking Refractory Ores: Regional Processing Pain Points
Andean Cyanicide Interference
Gold deposits along the Andes (especially in Peru and Chile) are frequently associated with high levels of copper and silver minerals (cyanicides). These base metals consume massive amounts of weak or impure cyanide, drastically slowing down gold dissolution kinetics and inflating chemical OPEX.
Amazonian Clay & Slurry Attrition
In the Guiana Shield and Brazilian laterite zones, ores exhibit extremely high clay content and high pulp viscosity. In intense CIP/CIL agitation tanks, low-grade activated Carbon is easily crushed, leading to catastrophic "carbon fines" generation and irreversible precious metal loss.
Strict ESG & Environmental Bans
Governments in Colombia, Ecuador, and Brazil are aggressively tightening environmental regulations, heavily restricting the use of MERCURY and monitoring traditional cyanidation. Plant operators are urgently seeking non-hazardous leaching alternatives to navigate sensitive ecological biomes.
2. United Chemical's Flagship Matrix for South America
AuCyan™ Sodium Cyanide NaCN (≥98.3%)
Purity Standard: ≥98.3%To combat the high copper interference found in Andean porphyry belts, AuCyan™ Sodium Cyanide NaCN (≥98.3%) delivers an aggressive, uncompromised level of purity. Guaranteed at a minimum of ≥98.3% (with factory analyses routinely hitting 98.5%), our white solid briquettes generate immediate and intense CN- ion availability. This overpowers cyanicide consumers, ensuring rapid and complete gold dissolution in Heap, Vat, CIL, and CIP processes.
High Stability: Low unreacted sodium hydroxide (NaOH) prevents scaling and maintains optimal pH buffers in high-altitude environments.
Secure Maritime Transit: Packaged in UN-certified 50kg steel drums or 1,000kg reinforced wooden boxes with heavy-duty PE liners, protecting the reagent against the intense humidity of maritime shipping and Amazonian transit.
📊Technical Specification: The 98.3% Purity Standard
Surpassing industry benchmarks, our latest production batches consistently achieve "Superior Quality" grades. Below is the certified performance data .
| Testing Items | Standard (GB/T 19306-2003) | AuCyan™ (Typical) | Operational Impact |
|---|---|---|---|
| Sodium Cyanide (NaCN) | ≥ 98.0% | 98.3% | Maximum gold dissolution kinetics and recovery rates. |
| Sodium Hydroxide (NaOH) | ≤ 0.5% | 0.13% | Superior pH stability; prevents premature hydrolysis. |
| Sodium Carbonate (Na2CO3) | ≤ 0.5% | 0.18% | Minimized impurity interference in the leaching solution. |
| Moisture (H2O) | ≤ 0.9% | 0.3% | Enhanced solid stability during long-term storage and sea transit. |
| Insoluble Substances | ≤ 0.05% | 0.02% | Anti-clogging formula; protects critical pumps and nozzles. |
AuCarb™ Gold Recovery Coconut Shell Activated Carbon (≥99% Hardness)
Ball-Pan Hardness: ≥99%When processing the dense, highly viscous lateritic clays of Brazil or the Guiana Shield, ordinary carbon shatters. AuCarb™ Gold Recovery Coconut Shell Activated Carbon is subjected to rigorous high-temperature steam activation, resulting in an elite ball-pan hardness guaranteed at ≥99%. This extraordinary mechanical strength withstands severe slurry attrition in CIL/CIP circuits, completely eliminating fine carbon gold loss.
Unmatched Loading Capacity: Superior CTC and Iodine numbers drive rapid adsorption kinetics, capable of stripping complex gold-cyanide solutions efficiently.
Anti-Fouling Micro-pores: Engineered with a low platelet count (≤5%) to resist organic poisoning from decayed rainforest matter occasionally found in surface ores.
📊 AuCarb™ Series: Core Parameters Intuitive Comparison Table
To facilitate a more intuitive selection process tailored to your specific metallurgy circuit, we have summarized the core technical parameters of our four flagship AuCarb™ variants.
| Core Testing Parameter | AuCarb™ BC1100 | AuCarb™ AC50 | AuCarb™ AC55 | AuCarb™ AC60 |
|---|---|---|---|---|
| Market Benchmarking Positioning | Conventional Heap Leach / High Cost-Performance | Comparable product: Jacobi G208S | Comparable product: Jacobi G209S | Advanced choice for Large Scale / Comparable: Jacobi G210S |
| Apparent Density | 0.40 - 0.50 g/ml | 0.48 - 0.55 g/ml | 0.45 - 0.55 g/ml | 0.45 - 0.55 g/ml |
| Ball-pan Hardness | ≥ 98.5% | ≥ 99% | ≥ 99% | ≥ 99% |
| Platelet Content | ≤ 5% | ≤ 5% | ≤ 5% | ≤ 5% |
| Attrition | ≤ 2% | ≤ 1.5% | ≤ 2% | ≤ 2% |
| Total Ash Content | ≤ 5% | ≤ 3% | ≤ 3% | ≤ 3% |
| Moisture | ≤ 10% | ≤ 5% | ≤ 5% | ≤ 5% |
| Adsorption Capacity (K Value) | / | ≥ 26 Kg/t | ≥ 28 Kg/t | ≥ 30 Kg/t |
| Adsorption Rate (R Value) | / | ≥ 50% | ≥ 55% | ≥ 60% |
| Iodine Number | ≥ 1100 mg/g | / | / | / |
| Butane Activity | / | ≥ 19.5% | ≥ 21% | ≥ 23% |
| CTC (Carbon Tetrachloride Activity) | / | ≥ 50% | ≥ 55% | / |
* Execution Standards: Complies with American ASTM standards and A.A.R.L. internal mining testing standards. The product has passed third-party inspection and test samples can be provided upon request.
AuLeach™ Gold Leaching Agent (GDA) - Non-Hazardous
Non-Hazardous ReagentWith governments in Colombia, Ecuador, and across the Amazon basin enforcing stringent environmental protections, AuLeach™ Gold Leaching Agent (GDA) provides the ultimate future-proof solution. Strictly classified as a Non-Hazardous chemical, AuLeach™ replaces Sodium Cyanide without triggering restrictive toxic goods regulations.
Drop-In Replacement: 100% compatible with existing Heap leaching, Vat leaching, CIP, and CIL setups. Zero capital expenditure (CAPEX) for equipment modification.
Simplified Import Logistics: Ships as general cargo, bypassing complex DG port permits, expensive armed transport escorts, and hazardous storage requirements in South America.
High Recovery on Oxidized Ores: Frequently matches or surpasses traditional cyanidation recovery rates, especially on oxidized epithermal deposits.
Validate Performance on Your South American Ores
Are high-clay laterites causing carbon breakdown? Are strict ESG laws threatening your plant's operation? We invite South American Metallurgists and Procurement Directors to evaluate our technology firsthand.
📌 Complimentary Laboratory Sample Availability:
United Chemical gladly provides free laboratory test samples strictly for AuCarb™ Gold Recovery Coconut Shell Activated Carbon and the AuLeach™ Gold Leaching Agent (GDA) - Non-Hazardous. Run comprehensive bench-scale bottle roll tests to witness our kinetic advantages.
* Commercial bulk shipments globally commence at a factory Minimum Order Quantity (MOQ) of 1x20' FCL via FOB or CIF maritime terms.
Frequently Asked Questions
Q1: How does AuCyan™ handle high copper-gold porphyry ores in the Andes?
Copper is a notorious "cyanicide" that rapidly consumes weak cyanide. AuCyan™ Sodium Cyanide NaCN is manufactured with an ultra-high purity of ≥98.3%. This robust concentration ensures that even after base metals consume a portion of the reagent, sufficient free cyanide ions (CN-) remain available to drive fast and complete gold dissolution.
Q2: Which South American ports do you ship to under CIF terms?
United Chemical offers comprehensive maritime logistics to all major South American commercial ports. We regularly quote CIF terms to Callao (Peru), Santos and Paranaguá (Brazil), Buenaventura and Cartagena (Colombia), Guayaquil (Ecuador), and Valparaíso/San Antonio (Chile). All inland transportation from the destination port is handled by the buyer's local logistics agent.
Q3: Why is a ≥99% hardness rating essential for Activated Carbon in the Amazon?
Ores mined in the Guiana Shield and Amazon basin are often lateritic and highly viscous. The heavy mechanical agitation required in CIP/CIL tanks causes immense shear stress on carbon granules. AuCarb™ Gold Recovery Coconut Shell Activated Carbon guarantees a ball-pan hardness of ≥99%, ensuring the carbon does not crush into fine dust and carry your adsorbed gold out to the tailings facility.
Q4: Is AuLeach™ GDA truly classified as non-hazardous for import into Colombia or Brazil?
Yes. AuLeach™ Gold Leaching Agent is officially certified as a Non-Hazardous chemical for maritime transport and import. This classification is vital for mining operations in environmentally sensitive regions (like the Amazon or Andean paramos), as it bypasses the severe restrictions, military escorts, and complex permitting associated with toxic cyanide imports.
Q5: Do you use railway transport to reach landlocked regions like Bolivia?
No. Due to international hazardous goods restrictions and unpredictable freezing conditions at high altitudes, we strictly do not use railway transport for our chemical exports. We ship exclusively via ocean freight (e.g., CIF Port of Arica or Iquique in Chile for Bolivian transit cargo), after which local licensed trucking companies take over.
Q6: Will we need to modify our CIP/CIL plant to use the AuLeach™ Non-Hazardous agent?
Not at all. AuLeach™ is formulated as a 100% drop-in replacement for traditional cyanidation. You can utilize your existing agitation tanks, carbon columns, and electrowinning cells without spending any capital on equipment retrofits.
Q7: What is the Minimum Order Quantity (MOQ) for South American shipments?
To maintain optimized factory-direct pricing and ensure maritime shipping efficiency across the Pacific or Atlantic, our strict MOQ is 1x20' FCL (Full Container Load) across all product lines.
Q8: Can we test your products before placing a full 1x20' FCL order?
Yes, we highly recommend laboratory validation. We offer complimentary test samples of our AuCarb™ Activated Carbon and AuLeach™ Non-Hazardous GDA. This allows your metallurgical team to conduct bottle roll and column tests to verify adsorption kinetics and recovery rates on your specific ore before committing to bulk commercial shipments.
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