Working Principle
The PSA process operates through a cyclic adsorption–desorption mechanism:
Cycle switching is controlled by PLC-driven pneumatic valves, typically with switching frequency of 40–120 seconds depending on oxygen flow demand.
Oxygen Output Characteristics
The system generates oxygen under the following operating conditions:
Continuous operation: 24-hour cyclic adsorption system without batch interruption. Oxygen is delivered directly into leaching tanks or oxidation reactors, where it increases dissolved oxygen concentration in cyanide slurry systems.
Application in Gold CIP / CIL Process
In gold extraction circuits, oxygen is injected into slurry tanks through diffusion pipes or sparging systems.
Typical process interaction:
- Oxygen enters leaching tank slurry (solid-liquid mixture of ore + cyanide solution)
- Dissolved oxygen supports oxidation of gold-bearing sulfide minerals
- Reaction rate of Au complex formation increases in aerated slurry environment
- Oxygen partial pressure increases dissolved oxygen concentration (DO value typically controlled in mg/L range depending on plant design)
System integration points:
- Oxygen outlet connects to pipeline manifold system (SS304 or HDPE piping)
- Flow control valve regulates injection rate per tank volume
- Optional oxygen analyzer measures DO concentration in real time
System Components
Air Pretreatment Section
Oil removal filter (≤0.01 ppm oil content target) | Dust filtration element (5 μm / 1 μm staged filtration) | Dryer unit reduces inlet air dew point to ≤ -40°C to protect zeolite bed from moisture poisoning
PSA Adsorption Module
Dual tower steel vessel (Q235B or stainless steel optional) | Internal distribution system for uniform airflow across zeolite bed | Zeolite molecular sieve layer thickness: typically 1.0–2.5 meters depending on capacity
Oxygen Buffer System
Pressure stabilizing tank absorbs flow fluctuation during valve switching | Equipped with pressure transmitter (0–1.0 MPa range) | Safety relief valve set at design pressure (commonly 0.8 MPa)
Control System
PLC logic controls adsorption, equalization, and desorption phases | Solenoid valve manifold controls air direction switching | Oxygen purity and pressure feedback loop adjusts cycle timing
NEWTEK Engineering Configuration
NEWTEK designs PSA oxygen systems based on mining plant oxygen demand calculation rather than fixed machine models.
Demand calculation based on ore throughput (tons/day)
Tank oxygen injection mapping (CIP/CIL volume distribution)
Modular PSA skids for container transport (20ft / 40ft ISO frame)
Parallel PSA tower expansion design for capacity scaling
Testing: Pressure holding at 1.1× design pressure | Nitrogen pressure decay leak detection | Continuous 72-hour operational cycling before shipment.
Installation and System Integration
Performed in three mechanical interfaces:
No cryogenic storage, vaporizer, or liquid oxygen unloading system is required.
Maintenance & Failure Behavior
Typical maintenance operations:
Zeolite replacement: 2–5 years | Air filter cartridge: 1–3 months | Valve seal inspection: 6–12 months
Observable failure modes:
Moisture ingress → purity drop | Valve delay → unstable flow | Oil carryover → capacity reduction
Detection: Online 0–100% O₂ purity analyzer & differential pressure sensors.
Operating Environment Conditions
System is specifically designed for harsh or isolated project environments:
Remote mining sites without liquid oxygen logistics
Ambient dust concentration environments (with pre-filtration)
Continuous operation under fluctuating load from batch leaching
Outdoor container installation with ventilation-controlled skid base
Application Scope
Technical Inquiry Support
To design system capacity, NEWTEK requires: Ore processing capacity (tons/day) | Leaching tank volume (m³ per tank) | Target dissolved oxygen level (mg/L) | Plant altitude | Available compressor power supply (kW limit). System capacity is then configured as Nm³/h oxygen output based on mass balance calculation.
CTA
Provide your gold processing flow sheet, CIP/CIL tank volume, or oxygen consumption requirement. NEWTEK engineering team will calculate PSA oxygen generation capacity, adsorption tower sizing, and pipeline integration layout based on your plant operating conditions.
Hot Tags: gold mining psa oxygen generator, China gold mining psa oxygen generator manufacturers, suppliers, aquaculture oxygen generator, oxygen and nitrogen gas plant, oxygen generator device, oxygen plant small, oxygenators for aquaculture, psa oxygen generator
