This generator ensures the continuous supply of high-purity oxygen required to optimize oxidation reactions, stabilize chlorine regeneration, and improve the overall dissolution kinetics of gold in chloride media. Designed for modern mineral processing plants aiming for cleaner and cyanide-free extraction, the system enhances leaching efficiency while reducing chemical consumption and operational risk.
Why Oxygen is Essential in Chlorine Leaching
Chlorine leaching relies on the formation of AuCl₄⁻ complexes through oxidative dissolution. Oxygen plays a direct role in:
Regenerating chlorine in solution
Maintaining the oxidation state required for gold dissolution
Accelerating the overall leaching reaction
Supporting ferric/ferrous conversion in related chloride systems
Enabling lower chlorine reagent consumption
With stable oxygen input, gold dissolves faster, impurity formation is reduced, and the process becomes more predictable and economical.
✔ High-Purity Oxygen (90–95%)
Ideal for promoting chlorine regeneration and maintaining required oxidation potential in the leach system.
✔ Continuous and Stable Oxygen Flow
Built for 24/7 operation with consistent purity-even during variable ore feed rates.
✔ PSA Industrial Oxygen Technology
Nitrogen adsorption
Moisture removal
High-stability molecular sieve beds
Robust flow control for chemical leaching applications
✔ Chlorine-Leaching-Specific Engineering
Material compatibility for corrosive chloride environments
Controlled oxygen dosing matched to leach tank kinetics
Integration with ORP and chlorine regeneration systems
✔ Low Operating Cost
On-site oxygen generation eliminates expensive LOX deliveries, reducing operating expenses significantly.
How the System Works
1) PSA Oxygen Production
Selective adsorption removes nitrogen, producing oxygen-rich gas that supports chloride leaching oxidation reactions.
2) Precision Flow Control
Automated oxygen metering ensures accurate dosing into:
Chlorine regeneration circuits
Leaching tanks
Pre-oxidation/comminution stages (if applicable)
3) Integration with Process Sensors
ORP (Oxidation-Reduction Potential) feedback
pH monitoring
Chlorine concentration tracking
Automated supply modulation
4) Optional Oxygen Compression
Boosts oxygen to the pressure required for injection or sparging into leaching tanks.
System Advantages for Chlorine Leaching Plants
1. Improved Gold Dissolution Rate
Constant oxygen enhances chlorine oxidation potential, leading to:
Faster leaching
Higher overall extraction efficiency
Reduced retention time in leach reactors
2. Reduced Chemical Consumption
Stable O₂ supply minimizes:
Excess chlorine dosing
Oxidant overuse
Wasted hydrochloric or chloride reagents
3. Cleaner, Greener Processing Route
Ideal for plants targeting cyanide-free or low-impact extraction.
4. Enhanced Process Control
With intelligent automation, the system helps maintain stable:
Oxidation potential
Chlorine regeneration cycle
Reaction equilibrium
5. Lower Operational Costs and Fewer Logistics Risks
On-site oxygen generation avoids:
Liquid oxygen transport
Cryogenic tank maintenance
Supply chain interruptions
Technical Specifications
| Parameter | Value |
|---|---|
| Oxygen Purity | 90–95% |
| Flow Rate | 50–5,000 Nm³/hr (expandable) |
| Outlet Pressure | 0.2–3.0 MPa (higher available with booster) |
| Technology | PSA oxygen production |
| Automation | PLC + SCADA remote control |
| Operation | 24/7 continuous industrial duty |
| Installation | Skid-mounted / Containerized / Stationary |
Applications
Suitable for chloride-based gold extraction circuits including:
Chlorine leaching of whole ore
Chloride leaching of flotation concentrates
Sulfide ore pre-treatment followed by chloride leach
Secondary gold recovery from tailings
Mixed chloride process routes (e.g., Cu-Au chloride systems)
The generator can also support oxidation requirements in chloride hydrometallurgy for:
Copper chloride leaching
Iron chloride regeneration
Ferric chloride oxidizing systems
System Configuration Options
A. Containerized Oxygen Plant
Rapid installation
Ideal for remote mine sites
Weather-resistant structure
B. Skid-Mounted Industrial Generator
Integrates easily into existing leach circuits
Minimal installation time
C. High-Capacity Oxygen Station
Suitable for large chloride leaching operations
Multi-unit PSA arrays for redundancy and scalability
Safety & Compliance
Built according to industrial oxygen system standards, featuring:
Oxygen-clean pipelines
Fire-resistant materials
Automatic shutdown for purity drops
Over-pressure protection
Full system diagnostics
Why Mining Operations Choose This System?
Purpose-built for chlorine leaching and chloride hydrometallurgy
Optimized oxygen stability improves dissolution and recovery
Reduces reagent costs and increases plant efficiency
Modular design supports expansions and process upgrades
Highly reliable for 24/7 production environments
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