• Designed for Refractory Gold Processing
Purpose-built oxygen generation for sulfide oxidation, carbonaceous ore treatment, and high-consuming metallurgical reactions.
• High Oxygen Purity for Oxidation Processes
Delivers 90–95% purity, supporting:
BIOX® bacterial oxidation
POX autoclave operation (with boosters)
High-strength cyanidation
Oxidative roasting
Pre-leach oxygenation
• Continuous On-Site Oxygen Production
Perfect for plants operating on 24/7 flowsheets, ensuring uninterrupted oxidation performance.
• Cost-Saving Alternative to Liquid Oxygen
Reduces oxygen-related expenses by eliminating tanker deliveries, cylinder rentals, and liquid storage systems.
• Higher Gold Recovery from Complex Ores
Oxygen-enriched processing breaks down sulfide matrices, liberating trapped gold and enhancing cyanide efficiency.
Applications for Refractory Ore Treatment
1. BIOX® / Bacterial Oxidation
The oxygen system provides:
Stable oxygen for microbial activity
Faster sulfide breakdown
Improved biological oxidation efficiency
Ideal for arsenopyrite and pyrite-rich ores.
2. Pressure Oxidation (POX)
For autoclave-based oxidation, high-pressure oxygen boosters are available to meet:
High partial pressure requirements
Elevated oxygen consumption during sulfide decomposition
Improves liberation of gold from intensely refractory ore structures.
3. Oxidative Roasting
Oxygen-enriched combustion:
Enhances sulfide oxidation
Reduces SO₂ emissions
Stabilizes roasting temperature profiles
4. High-Intensity Cyanidation
Oxygen increases:
Dissolution rate of gold
Cyanide efficiency
Leaching kinetics
Especially effective for ores previously resistant to cyanide alone.
5. Pre-Oxidation Tanks
Perfect for:
Cyanide-consuming sulfides
Carbonaceous preg-robbing ore
Partially refractory concentrates
The Refractory Ore Oxygen System uses advanced Pressure Swing Adsorption (PSA) technology:
Air is compressed and purified
Nitrogen is selectively absorbed by molecular sieves
High-purity oxygen flows to the buffer tank
Oxygen is delivered directly to oxidation tanks, autoclaves, or leach circuits
Optional high-pressure compressors can elevate oxygen pressure for autoclave-grade applications.
How the System Works
The Refractory Ore Oxygen System uses advanced Pressure Swing Adsorption (PSA) technology:
- Air is compressed and purified
- Nitrogen is selectively absorbed by molecular sieves
- High-purity oxygen flows to the buffer tank
- Oxygen is delivered directly to oxidation tanks, autoclaves, or leach circuits
Optional high-pressure compressors can elevate oxygen pressure for autoclave-grade applications.
Key Benefits for Mining Operations
✓ Increased Process Stability
Balancing oxygen supply stabilizes:
Leach kinetics
Pre-oxidation reaction rates
Autoclave conditions
BIOX® bacterial performance
✓ Lower Operating Costs
Switching from delivered LOX to on-site PSA oxygen reduces:
Fuel for roasting
Cyanide consumption
Reagent waste
Gas procurement and logistics costs
✓ Safe & Easy Operation
The system is fully automated with PLC control and minimal operator intervention.
System Configuration
A complete Refractory Ore Oxygen System includes:
Heavy-duty air compressor
Air filtration & refrigerated/heatless dryer
PSA oxygen generator
Oxygen storage tank
Industrial oxygen booster (optional)
Oxygen distribution manifold
PLC smart control system
Upgrades available for high-sulfur, high-altitude, and high-consumption mines.
Technical Specifications
| Feature | Specification |
|---|---|
| Oxygen Purity | 90–95% |
| Capacity Range | 20–500 Nm³/h (expandable) |
| Outlet Pressure | 0.3–0.6 MPa (up to 15 MPa with booster) |
| Dew Point | ≤ –45°C |
| Operating Mode | Fully automated |
| Installation Type | Skid-mounted / Containerized / Fixed plant |
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