On - Site Oxygen Generator For Gold Mining

Gold mine on-site oxygen concentrators are specialized industrial equipment for gold mining. Based on PSA/VPSA technology, they separate high-purity oxygen from air on-site, achieving output purities exceeding 90%-95%, directly supplying leaching tanks and other equipment. Their core value lies in optimizing the cyanide leaching process: increasing dissolved oxygen in the slurry, boosting gold recovery by 15%-20%, shortening processing time by 50%, and reducing cyanide consumption and wastewater costs. The modular design, dust protection, and remote monitoring make the equipment suitable for the harsh mining environment. Eliminating the need for liquid oxygen storage and transportation reduces energy consumption by 30%, enabling efficient and environmentally friendly production.

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Description

Technical Parameters

What are the benefits of on-site oxygen generator for gold mining?

●Economic Efficiency:
On-site oxygen generation cuts oxygen procurement costs by up to 70% (ideal for remote mines) and lowers operational costs via low-energy design

●Reliable Supply:

Ensures continuous stable oxygen, avoiding production disruptions from transportation delays

●Higher Gold Extraction:
High-purity oxygen boosts cyanide leaching and pressure oxidation efficiency, multiplying gold recovery and shortening leaching time.

●Enhanced Safety:
Eliminates liquid oxygen storage/transport explosion/leak risks; provides sufficient breathing oxygen for miners, reducing harmful gas-related health risks.

●Eco-friendliness:
Lowers liquid oxygen transport carbon emissions ; reduces cyanide use and wastewater treatment burden, minimizing pollution.

Technical Principles

Adopting PSA or VPSA Technology

High-purity oxygen is mainly separated from air using Pressure Swing Adsorption (PSA) or Vacuum Pressure Swing Adsorption (VPSA) technology

Air Compression and Pre-treatment

After being compressed by an air compressor, the air passes through multi-stage filters and a refrigerated dryer to remove oil, water, and particles. This ensures the air entering the oxygen generation system is clean and dry, meeting the ISO 8573-1 Class 1 standard

Oxygen Separation

In the PSA system, compressed air flows through an adsorption tower filled with zeolite molecular sieves. Nitrogen and other gases are adsorbed, while oxygen passes through. The VPSA system uses a blower and a vacuum pump to reduce operating pressure, further improving energy efficiency.

Oxygen Purification and Output

The separated oxygen undergoes further purification, achieving a purity of 90%-95% or even over 99% to meet the process requirements of gold mining. The oxygen is directly delivered to leaching tanks or other process equipment via pipelines.

How can on-site oxygen concentrators improve gold mining efficiency?

On - site oxygen generator for gold mining

Accelerating the Cyanide Leaching Reaction: During the cyanide leaching process, an on-site oxygen concentrator provides 90%-95% high-purity oxygen. This oxygen is injected into the ore-water slurry, promoting the oxidation and dissolution of gold, forming a water-soluble gold-cyanide complex. Studies have shown that high dissolved oxygen levels can increase gold recovery by 2-5 times and shorten leaching time by over 50%.

Optimizing the Pressure Oxidation Process: For difficult-to-treat ores, the pressure oxidation process requires high temperatures, high pressures, and oxygen injection. An on-site oxygen concentrator ensures a stable supply of high-purity oxygen, accelerating the oxidation of sulfide minerals to sulfates, thereby releasing the trapped gold particles. Furthermore, oxygen converts arsenic into harmless ferric arsenate, reducing the risk of environmental contamination.

Ensuring a Continuous and Stable Oxygen Supply: Traditional liquid oxygen transportation or cylinder oxygen supply methods can face transportation delays and unstable supply in remote mining areas. On-site oxygen concentrators provide continuous and stable oxygen production within the mine, avoiding production interruptions due to oxygen shortages and ensuring the continuity of mining operations.

Reduced Chemical Reagent Consumption: A sufficient oxygen supply accelerates chemical reactions, reducing the amount of chemical reagents such as sodium cyanide used in cyanide leaching. This not only reduces reagent procurement costs but also reduces the amount of cyanide-containing wastewater generated, thereby alleviating the burden of wastewater treatment.

Reduced Overall Production Costs: On-site oxygen concentrators eliminate the need for liquid oxygen transportation, reducing oxygen procurement costs by up to 70%. Furthermore, their low energy consumption further reduces operating expenses. These savings can be reinvested in other production processes, improving overall mining efficiency.

FAQ

1.What's the difference between PSA and VPSA technologies for on-site oxygen generators, and which is more suitable for my gold mine?

Both PSA and VPSA use zeolite molecular sieves to separate oxygen from air, but they differ in pressure and application scope. PSA operates at 0.3-0.6MPa, has a compact structure, and is ideal for small-to-medium oxygen demands, suiting mines with intermittent or variable oxygen use . VPSA uses vacuum desorption, achieves lower energy consumption, and handles large-scale needs with more stable purity, making it better for mines with continuous, high-volume requirements like large-scale cyanide leaching .

2.How do on-site oxygen generators improve gold extraction efficiency and reduce costs compared to liquid oxygen?
In terms of extraction efficiency, high-purity oxygen from on-site generators boosts dissolved oxygen in cyanide leaching slurries, increasing gold recovery by up to 2-5 times and cutting leaching time by over 50% . Cost-wise, they eliminate liquid oxygen transportation fees, reducing procurement costs by up to 70%-a huge advantage for remote mines . Their low-energy design also lowers operational costs, while reduced cyanide consumption eases wastewater treatment expenses .

3.What key technical parameters should I consider when selecting an on-site oxygen generator for gold mining?
First, oxygen purity: 90%-95% is optimal for gold leaching-higher purity increases costs without significant efficiency gains . Second, oxygen output: Calculate total on-site demand and add 10-20% margin to ensure it meets peak use and future expansion . Third, output pressure: 0.1-0.4MPa is standard to match leaching equipment; adjustable pressure models offer more flexibility . Fourth, energy consumption: Prioritize units with low specific energy consumption to reduce long-term operational costs .

4.How to ensure the reliability of on-site oxygen generators in harsh gold mine environments, and what maintenance is required?
For reliability, choose models with modular/containerized designs and IP65-level protection to resist dust, humidity, and temperature fluctuations . Ensure the pre-treatment system meets ISO 8573-1 Class 1 standards to protect molecular sieves . For maintenance, regularly replace multi-stage filters to prevent clogging .

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