Premium Silver Concentrate
Engineered for maximum precious metal recovery. Supplying the global market with China-compliant, high-yield silver concentrates, sourced directly from our rich Andean argentite and galena deposits.
Sourcing the Future of Tech & Energy.
SINCHI WAYRA SA is a premier global supplier of silver-bearing concentrates. Recovered primarily through the flotation of complex lead, zinc, and copper ores, our silver concentrate acts as the foundational feedstock for refined bullion, advanced solar panel manufacturing, and high-tech electronics.
Our Super High-Grade (2000–5000 g/MT) and Ultra Premium (>5000 g/MT) concentrates are strictly engineered to meet the lowest penalty limits. This ensures rapid China Customs clearance, maximized payable metal terms, and uninterrupted supply chain velocity for the world’s leading smelters.
Comprehensive Export Specifications
1. Silver Concentrate Categories by Content
| Grade Type | Silver (Ag) g/MT | Commercial Classification |
|---|---|---|
| Low Grade | 50–200 g/MT | Industrial silver-bearing concentrate |
| Medium Grade | 200–800 g/MT | Standard export concentrate |
| High Grade | 800–2000 g/MT | Premium smelter grade |
| Super High Grade | 2000–5000 g/MT | China Preferred Grade |
| Ultra Premium | 5000–10000 g/MT | Rare high-grade concentrate |
2. Super High-Grade Spec (2000–5000 g/MT)
China Customs Preferred Commercial Specification.
| Component | Guaranteed Spec |
|---|---|
| Silver (Ag) | 2000–5000 g/MT |
| Lead (Pb) / Zinc (Zn) | 30–70% / ≤5% |
| Gold (Au) | 5–50 g/MT |
| Sulfur (S) / Iron (Fe) | 15–30% / ≤8% |
| Copper (Cu) / Silica (SiO2) | ≤1% / ≤3% |
| Arsenic (As) / Antimony (Sb) | ≤0.05% / ≤0.10% |
| Mercury (Hg) / Bismuth (Bi) | ≤0.01% / ≤0.05% |
| Moisture | ≤8% |
3. Critical Penalty Elements
Strictly monitored limits to prevent severe smelter deductions.
| Element | Preferred Limit | Penalty Risk |
|---|---|---|
| Mercury (Hg) | ≤0.01% | Severe (Rejection risk) |
| Arsenic (As) | ≤0.05% | High Penalty |
| Antimony (Sb) | ≤0.10% | Smelter Penalty |
| Bismuth (Bi) | ≤0.05% | Refining Issue |
| Fluorine (F) | ≤0.05% | Customs Issue |
| Chlorine (Cl) | ≤0.03% | Penalty |
| Moisture | ≤8% | Freight & TML Deduction |
Maritime Export & Packaging Standards
A. FIBC Bags & Drums
Optimized for high-value moisture control.
- Jumbo Bags: 1–2 MT woven polypropylene with PE liner and 4 lifting loops (Most Common).
- Steel Drums: 200–250kg packaging strictly utilized for high-value premium silver assay material.
- Containerized: 20FT holding 20–27 MT. Requires plastic lining, moisture barrier, and dunnage.
B. Maritime Compliance
Mandatory certification for global maritime transit.
- IMSBC Code Compliance: Strict adherence to bulk cargo codes.
- TML Certificate: Transportable Moisture Limit verification.
- Moisture & Radiation: Mandatory certificates ensuring safe handler environments and no liquefaction risk.
C. Pre-Shipment Inspection
Executed by BQCIS, SGS, BV, CCIC, or Intertek.
- Assay Verification: Silver/Gold assay analysis, Moisture, and TML testing.
- Physical Checks: Weight verification, sampling, and radiation screening.
- Supervision: Container loading and final seal verification.
Export Documentation Requirements
Commercial Invoice • Packing List • Bill of Lading • Certificate of Origin • Certificate of Analysis (COA) • Moisture Certificate • TML Certificate • Weight Certificate • Inspection Certificate • Radiation Free Certificate • Fumigation Certificate.
Production & Metallurgical Processing
1. Mining & Beneficiation
Raw ore is crushed to <20mm and milled to 75–200 microns. Advanced flotation circuits utilize precision xanthate collectors and copper sulfate activators to isolate silver-bearing sulfide minerals (like argentite). Final thickening and vacuum filter pressing drops moisture strictly below 8% for export.
2. Downstream Smelting Reactions
Our concentrates are engineered for flawless downstream precious metal recovery and Doré refining:
- Roasting: Ag2S + O2 → Ag + SO2
- Electrolytic Refining: Ag+ + e− → Ag
- Lead Collector Smelting: High lead content acts as a collector to recover silver into lead bullion prior to final separation.
Fueling High-Tech Manufacturing.
From the depths of our mining assets to the primary refineries of China and South Korea, SINCHI WAYRA SA’s silver concentrates provide a reliable, high-yield baseload for the world’s most advanced industrial applications.