NEWTEK VPSA Oxygen Plant: Application Of Oxygen Generator in Gold Mining

Dec 31, 2024

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introduction

As a long and important industry, gold mining has always held a special place in the global economy. As the core process of gold extraction in gold mining, cyanidation requires a high stable supply of oxygen. In this context, NEWTEK, as a professional manufacturer of VPSA oxygen plants, is playing an indispensable role in meeting the demand for oxygen in gold mining and helping the efficient development of the industry.

The close relation between cyanide process and oxygen in gold mining

The central position of cyanide process

In gold mining, cyaniding is the key technology to extract gold from ore. This process dissolves the gold from the ore by using a cyanide solution, laying the foundation for subsequent gold separation and refining. Whether it is high grade gold ore or low grade gold ore, cyanide process plays a vital role, and its efficiency directly affects the overall benefit of gold mining.

Oxygen plays a key role in the cyaniding process

Oxygen is the core element of gold cyanidation. The chemical equation 4Au (s) + 8CN⁻(aq) + 2H₂O (l) + O₂(g) → 4 [Au (CN)₂]⁻(aq) + 4OH⁻(aq) fully demonstrates the critical role of oxygen in the cyanation process. Oxygen causes cyanide to react with gold, causing the gold to dissolve in solution. Without an adequate supply of oxygen, the cyaniding process becomes slow and inefficient, resulting in lower gold extraction rates and increased mining costs.

The dilemma of traditional oxygen supply in gold mining

Transportation and storage problems

Gold mining has traditionally relied on oxygen supply methods, such as bottled oxygen or liquid oxygen transport, with many problems. For remote gold mines, oxygen transportation is costly and time-consuming, and unexpected conditions during transportation can easily lead to oxygen supply interruptions, seriously affecting production schedules. At the same time, the storage of bottled oxygen requires specific safety conditions, increasing management costs and safety risks.

Cost and sustainability issues

The traditional oxygen supply method not only has high transportation cost, but also produces a lot of carbon emissions in the process of production and transportation, which does not meet the requirements of the current sustainable development of mining industry. With the increasingly stringent environmental regulations, this high-cost, high-pollution oxygen supply model is increasingly difficult to meet the development needs of the gold mining industry.

Superior performance parameters

The NEWTEK VPSA Oxygen Plant is a pre-engineered solution that operates efficiently in the 85% to 95% oxygen purity range, with standard output pressures of 15 pound-force per square inch (1 bar) and 43 pound-force per square inch (3 bar). Higher pressures can also be tailored to the specific needs of gold mining. Oxygen production capacity ranges from 4 to 13 tons per day (65 to 225 standard cubic feet per cubic foot per minute), or 100 to 350 cubic meters per hour (150 to 500 kilograms per hour, or 1,800 to 6,300 liters per minute), and can be achieved by installing multiple units. Enhance supply reliability while leveraging the superior performance of a single unit to meet the oxygen needs of gold mining of all sizes.

Outstanding cost effectiveness

The NEWTEK VPSA oxygen plant uses the least energy compared to other oxygen supply sources and ensures a uniform power factor, thereby saving utility costs. In addition, it has the broadest power regulation capacity, the lowest can be reduced to 30%, and during front-end equipment maintenance, the unique reliability design enables it to achieve a semi-operating state, but also can produce 50% of the design capacity of oxygen, which not only improves the reliability of oxygen supply, but also reduces the dependence on liquid oxygen, ensuring the continuity of the gold cyanide process. It can save a lot of costs for enterprises in the long run.

Technical and installation advantages

The plant offers the most comprehensive range of adsorption technologies for complete oxygen supply at the lowest additional cost. The user does not need to carry out air compression, cooling, drying, oil removal, electrical, control or compression equipment construction work. Site installation or relocation is simple and low-risk, requires only a single power connection (380-575 volts, three-phase, 50 or 60 Hz), requires no on-site interconnection of electrical or control equipment, and has the smallest footprint of all on-site oxygen generation technologies, easily adapting to the complex spatial layout of the mine.

Operation and maintenance worry

NEWTEK VPSA Oxygen plant has low operating costs, long service life of molecular sieve, no oil, no sealing or cooling water for oxygen production, avoiding high pressure air or degreasing system maintenance costs. At the same time, it also obtained the CE certification, indicating that the product meets the relevant standards and is of reliable quality.

Application characteristics of NEWTEK VPSA oxygen plant in gold mining

Efficient cyaniding process

At the gold mine cyanidation stage, the steady and sufficient supply of oxygen from the NEWTEK VPSA oxygen plant speeds up the dissolution of gold, significantly increasing the cyanidation efficiency and ensuring that as much gold as possible is extracted from the ore, thereby increasing the efficiency of mining.

Flexibility to adapt to different scales

Whether it is a small gold mining project or a large scale mining operation, the number of oxygen generating units can be reasonably installed according to the actual demand. The installation of multiple units can take advantage of the advantages of a single unit, but also enhance the reliability of the overall supply, and flexibly adapt to different scales of oxygen demand.

The standby supply mechanism has been improved

A liquid oxygen backup system has been installed at the oxygen plant to provide utilities for small on-site plants and backup supplies during routine maintenance. Liquid oxygen is supplied to the supply system through tank trucks, and when the supply capacity of the oxygen plant is insufficient to meet the demand, the product can be automatically vaporized into the pipeline to ensure uninterrupted oxygen supply and ensure the continuity of gold mining operations.

Sum up

With its superior performance, reliable supply solutions, and cost, technical and operational advantages, the NEWTEK VPSA oxygen plant is perfectly suited to the stringent requirements of oxygen supply in gold mining. It not only solves the problems of traditional oxygen supply methods, realizes efficient cyanidation and oxygen supply autonomy, but also plays a key role in improving production efficiency, reducing costs and promoting environmental protection and sustainable development. With the continuous progress of technology, it is believed that the application of NEWTEK VPSA oxygen plant in the field of gold mining will be more extensive and in-depth, providing solid support for the development of the global gold industry.