Advanced Gold Extraction Chemicals for Brazilian Metallurgy
Overcoming High-Clay Laterites & Refractory Sulfides from Pará to Minas Gerais
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 the Brazilian mining sector.
The Brazilian Mining Challenge: From the Amazon to the Iron Quadrangle
Brazil commands a colossal share of global gold production, yet its distinct geology demands uncompromising metallurgical precision. In the historic Quadrilátero Ferrífero (Iron Quadrangle) of Minas Gerais, deep-shaft operations encounter complex, refractory sulfide ores that resist standard cyanidation. Conversely, in the prolific Tapajós gold province of Pará and the Amazon Basin, mining companies face intense operational hurdles processing thick, clay-rich laterite and saprolite soils that severely degrade activated Carbon.
As an industry-leading manufacturer proudly exporting to 77+ countries worldwide, United Chemical provides custom-engineered chemical reagents to overpower these specific Brazilian constraints. Furthermore, we recognize the stringent ESG standards enforced by IBAMA and the ANM, offering revolutionary compliant alternatives. Our portfolio fully supports Carbon-in-Pulp (CIP), Carbon-in-Leach (CIL), Carbon-in-Column (CIC), Heap leaching, and Vat leaching.
To ensure secure, uninterrupted supply chains, we operate exclusively via ocean container logistics. We transact under FOB (China ports) or CIF terms directly to key Brazilian hubs such as the Port of Santos, Port of Vila do Conde (Barcarena), and Port of Rio de Janeiro. We do not utilize international railway transport. With a strict Minimum Order Quantity (MOQ) of 1x20' FCL, we guarantee factory-direct cost efficiency for all commercial mining partners.
1. Unlocking Complex Ores: Operational Bottlenecks in Brazil
High-Clay Laterite Slurries (Amazon)
Amazonian laterite ores create extremely high-viscosity pulp in CIL/CIP tanks. The immense mechanical shear required to agitate this thick slurry crushes standard Activated Carbon into fine dust, causing irreversible gold-loss directly into tailings facilities.
Refractory Sulfides (Minas Gerais)
Deep operations often encounter arsenopyrite and pyrrhotite. These complex refractory sulfides act as severe oxygen and cyanide scavengers (cyanicides), severely retarding gold dissolution rates and inflating chemical reagent OPEX.
Strict IBAMA Regulations & Logistics
Transporting highly toxic DG Class 6.1 cyanide deep into the Amazon via rivers and unpaved roads requires expensive military escorts, intense permitting, and severe environmental scrutiny. Mining sites urgently need eco-compliant, non-hazardous alternatives.
2. The Golden Triangle: United Chemical's Solutions for Brazil
AuCyan™ Sodium Cyanide NaCN (≥98.3%)
Purity Standard: ≥98.3%To conquer the refractory sulfides and cyanicides found in deep Brazilian mines, AuCyan™ Sodium Cyanide NaCN delivers uncompromising chemical strength. We strictly guarantee a minimum purity of ≥98.3% (with factory production batches regularly testing at 98.5%). Formulated as highly stable white briquettes, AuCyan™ ensures an aggressive and immediate release of CN⁻ ions, sustaining fast leaching kinetics even when base metals consume a portion of the solution.
High Stability Formulation: Low unreacted sodium hydroxide (NaOH) minimizes unwanted scaling in intensive CIL/CIP pipelines.
Maritime-Safe Packaging: Packed in UN-certified 50kg hermetically sealed steel drums or 1,000kg reinforced wooden boxes with inner PE liners, completely preventing humidity degradation during Atlantic ocean freight.
📊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
Ball-Pan Hardness: ≥99%When processing the extremely viscous, high-clay laterite slurries of the Amazon Basin, standard carbon fails. AuCarb™ Activated Carbon is manufactured from premium, high-density Coconut Shells via advanced high-temperature steam activation. We guarantee an elite ball-pan hardness of ≥99%. This unmatched durability survives the intense mechanical agitation of high-viscosity pulp, practically eliminating fine carbon gold loss.
Massive Adsorption Capacity: Superior CTC and Iodine activity ensures rapid and complete adsorption of gold-cyanide complexes, minimizing barren solution losses.
Anti-Organic Fouling: Low platelet content (≤5%) resists poisoning from decomposed rainforest organics frequently found in surface laterites.
📊 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 ReagentAs Brazilian regulatory bodies like IBAMA enforce increasingly rigorous environmental safety mandates across the Amazon and Cerrado biomes, AuLeach™ Gold Leaching Agent (GDA) serves as the ultimate strategic upgrade. Officially classified globally as a Non-Hazardous chemical, AuLeach™ entirely replaces Sodium Cyanide, profoundly reducing logistics costs, armed escort requirements, and tailings detoxification overhead.
Zero Equipment CAPEX: A seamless drop-in replacement. Use your existing Heap leaching pads, Vat leaching tanks, CIP, and CIL infrastructure without any mechanical modifications.
Frictionless Amazon Logistics: Shipped as general cargo. Bypasses the complex DG Class 6.1 port permits and dangerous goods river transport restrictions.
Rapid Oxide Recovery: Delivers equivalent or superior extraction yields on oxidized laterite ores compared to traditional cyanidation, often with faster kinetics.
Validate Performance on Your Brazilian Ore Samples
Is high-clay laterite destroying your carbon? Are ESG regulations and transport costs inflating your OPEX? We invite Brazilian Metallurgists and Procurement Directors to evaluate our technology firsthand.
📌 Complimentary Laboratory Sample Availability:
United Chemical proudly provides free laboratory test samples strictly for AuCarb™ Gold Recovery Coconut Shell Activated Carbon and the AuLeach™ Gold Leaching Agent (GDA) - Non-Hazardous. Run independent bottle roll and column tests to verify our kinetic superiority on your specific ore.
* Commercial bulk shipments globally commence at a factory Minimum Order Quantity (MOQ) of 1x20' FCL via FOB or CIF maritime terms.
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