Atlas Copco E‑Air V1100 compressors underpinning Autlán manganese ore sorting pursuit
In manganese mining, the difference between value and waste can come down to split‑second precision. For Mexico-based Autlán, a leading manganese producer, that precision is achieved in an automated sorting stage where timed bursts of compressed air separate high‑grade ore from lower‑quality stone. This demanding application requires a compressor that delivers fast response, stable pressure and reliable performance, making Atlas Copco’s E‑Air V1100 compressor the ideal choice for the job, the company says.
At Autlán’s mining sites, producing high‑quality manganese requires a stable and precisely controlled flow of compressed air that meets strict process and environmental requirements.
Compressed air is particularly critical in the mineral sorting stage of manganese production. Autlán uses a classification machine that separates ore based on manganese content. Controlled bursts of compressed air remove stones with lower mineral concentration, ensuring that only higher‑quality manganese ore continues through the process. This application requires clean and dry compressed air, with a temperature no more than 20°C above ambient. To achieve reliable separation, the process demands a free air delivery of 45 Nm³/min at 10 bar.
Atlas Copco worked closely with Autlán to analyse the specific sorting application and define the optimal compressed air solution, it says. The assessment revealed that continuous air supply was not necessary, as compressed air was only used intermittently during sorting. This insight made it possible to specify a solution that met performance requirements while improving energy efficiency and reducing operating costs.
Based on these findings, Autlán chose three E‑Air V1100 VSD electric portable air compressors, with two units in operation and one serving as a backup. Designed for demanding outdoor and mining environments, the compressors required no fixed installation or compressor room. This eliminated the need for additional civil works and provided Autlán with a flexible and cost‑effective compressed air solution.
The electric E‑Air VSD compressors feature a leak‑proof frame with 110% fluid containment, helping prevent spills and protect the surrounding environment, according to Atlas Copco. This was a key requirement for Autlán, as soil contamination at mining sites is strictly regulated. Additional design features such as encapsulated motor windings, an IP65‑rated controller, an IP67 water‑cooled drive, and a robust steel enclosure with a three‑layer anti‑corrosion paint system ensure reliable operation in dusty, outdoor conditions.
To guarantee optimal compressed air quality, Autlán also added an optional UD+ filter downstream of the aftercooler. This patented two‑in‑one coalescing filter removes oil aerosols, dust and moisture from the compressed air. By delivering clean air with minimal pressure drop, the UD+ filter helps prevent nozzle clogging and maintains consistent performance while preserving overall system efficiency, the company claims.
Powered by an integrated variable speed drive and permanent magnet motor, the E‑Air V1100 VSD compressor requires low starting power and avoids the need to oversize the electrical supply. This technology delivers high efficiency, especially at partial load, ensuring that energy use closely follows the real‑time compressed air demand of the application.
The compressors are equipped with Atlas Copco’s PACE technology, which allows operators to precisely adjust working pressure between 5 and 12 bar in 0.1‑bar increments. Combined with the Smart Air Xc4004 controller, operators gain full visibility of pressure and flow on a clear seven‑inch display, enabling easy monitoring and efficient operation. Integrated aftercoolers supplied as standard further ensure high‑quality compressed air for demanding mining applications.
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