
Underground Mining PSA Oxygen Generator
Description
Technical Parameters
Autonomous and Instant Oxygen Supply - In underground mines, traditional oxygen cylinders/liquid oxygen face logistical challenges and high storage risks. On-site PSA oxygen generation enables "on-demand" supply, ensuring uninterrupted oxygen availability.
Cost Savings and High Operational Efficiency - Compared to bottled or liquid oxygen, on-site oxygen generation systems significantly reduce hidden costs associated with transportation, cylinder replacement, and storage. Real-world mine case studies demonstrate that PSA systems achieve higher efficiency and reduce oxygen waste.
Improved Process Efficiency - In processes such as gold leaching, oxidative treatment, and tailings oxidation, increasing dissolved oxygen or oxygen concentration can shorten reaction times and improve metal recovery rates.
Enhanced Safety and Environmental Compliance - Reduces the risks associated with oxygen cylinder transportation, storage, and exposure, minimizing potential accidents during logistics. The equipment also reduces carbon emissions and environmental remediation costs, aligning with the trend towards green mining operations.

| No. | Models | Capacity (Nm3/hr) | Purity | Power consumption of 1Nm3 oxygen produced (kw/h) | Number of bottles filled in 12 hours (pcs) | Operator needed |
| 1 | NTK-5P | 5 | 93%+-3% | 3.54 | 10 | 2 |
| 2 | NTK-10P | 10 | 93%+-3% | 2.52 | 20 | 2 |
| 3 | NTK-15P | 15 | 93%+-3% | 2.31 | 30 | 2 |
| 4 | NTK-20P | 20 | 93%+-3% | 2.13 | 40 | 2 |
| 5 | NTK-25P | 25 | 93%+-3% | 2.01 | 50 | 2 |
| 6 | NTK-30P | 30 | 93%+-3% | 2.09 | 60 | 2 |
| 7 | NTK-40P | 40 | 93%+-3% | 1.81 | 80 | 2 |
| 8 | NTK-50P | 50 | 93%+-3% | 1.94 | 100 | 2 |
| 9 | NTK-60P | 60 | 93%+-3% | 1.62 | 120 | 2 |
| 10 | NTK-80P | 80 | 93%+-3% | 1.92 | 160 | 2 |
| 11 | NTK-100P | 100 | 93%+-3% | 1.83 | 200 | 2 |
| Design basis: Altitude:≤500m;RH:≤80%;Temperature:0℃-38℃;Filling pressure: 150Bar 40L Type Standard Cylinder | ||||||
Core Technological Advantages
●Technical Principle:
This equipment employs PSA (Pressure-Assisted Adsorption) technology.
Compressed air enters two or more adsorption towers, where zeolite molecular sieves adsorb impurities such as nitrogen and carbon dioxide, allowing only oxygen to pass through.
Oxygen production and regeneration alternate, achieving continuous and stable oxygen output.
Oxygen purity can reach approximately 90%–95% (or higher, depending on customization) to meet the oxygen requirements of deep-well mines.
●Equipment Structure and Site Adaptability:
Modular or containerized design, suitable for rapid deployment in underground or enclosed mine sites.
Specifically designed for mining environments, including steady-state operation under harsh conditions such as high humidity, low temperature, high dust, and vibration.
Integrated automatic monitoring system and easy-to-use interface, reducing on-site manual maintenance intensity.
FAQ
1. Why are PSA oxygen generators needed in underground mines?
Underground mines are enclosed spaces with limited ventilation, resulting in a large and continuous demand for oxygen. PSA oxygen generators can produce oxygen on-site, either underground or at the surface, ensuring a stable oxygen supply for processes such as tunneling, oxidation reactions, and flotation. This avoids the problems of difficult and costly liquid oxygen transportation and hazardous storage.
2. What purity of oxygen can NEWTEK's PSA oxygen generator provide?
NEWTEK's underground mining oxygen generation system uses advanced molecular sieve adsorption technology, maintaining an oxygen purity of 90%–95%, which meets the high-concentration oxygen requirements of leaching and oxidation processes in gold, copper, and nickel mines.
3. Can the equipment adapt to the harsh environment of underground mines?
Yes. The equipment features a dustproof, moisture-proof, shockproof, and high-temperature resistant design, equipped with a high-efficiency filtration and automatic drainage system, allowing stable operation in high-humidity, high-dust, or high-temperature environments. It also supports remote monitoring and automatic alarms.
4. Is installation and operation complex? Are professional operators required?
The system features a modular structure, allowing for rapid installation underground or on the surface, and is typically operational within days. The user interface is simple, and the control system operates fully automatically, requiring only basic training for operation and maintenance.
5. How do the operating costs of the PSA oxygen generator compare to liquid oxygen supply?
The operating cost of a PSA oxygen generator is only 30%–50% of that of liquid oxygen purchases, and it is not limited by transportation or weather conditions. For remote mines, long-term use can significantly reduce the total cost of oxygen supply, making it extremely economical.
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