Metso Loesche VRM

Setting the benchmark in sustainable comminution

As a breakthrough innovation, the Metso Loesche VRM brings dry grinding to mineral processing. It unites exceptional energy efficiency, high throughput and superior mineral liberation all within a compact footprint. Engineered for high reduction ratios and consistent performance, it enables operations to process more material with fewer resources, cutting power consumption, using water wisely, and reducing operating costs. It’s an innovative grinding technology built for performance and environmental responsibility.

High energy savings

Up to 40% energy savings

Enables fully dry and reduced-water processes

Removes the need forgrinding media

Compact design

Comparable footprint to an SABC circuit

Reduced civil and steel works

Outstanding reduction ratio of > 3000:1

F100 < 150 mm to P100 < 20 micron

Improved mineral liberation, less sulfide oxidation, and steeper particle size distribution

Improved downstream recovery

Up to 7 % better flotation performance

Check the video

Metso Loesche VRM | Metso Loesche VRM system

{{index}} / {{itemsCount}}

Metso Loesche VRM

Designed for modern mineral processing demands, the Metso Loesche VRM is quickly adaptable to changes in feed composition and consistently delivers a steep particle size distribution that enhances downstream efficiency.
Its low specific wear rates reduce maintenance and extend component life, while the combination of higher recovery and improved process stability drives higher revenue for your operation.

Metso Loesche VRM system

The Metso Loesche VRM grinding system delivers exceptional efficiency and plant design flexibility through its inherently compact footprint, allowing producers to maximize space and reduce civil construction demands. By consolidating functions traditionally handled by multiple machines, the system simplifies the overall layout with less equipment, lowering installation complexity and long‑term maintenance needs. Additionally, its ability to operate as a fully dry process eliminates the need for slurry handling, enabling the use of dry storage and creating clear advantages in energy savings, material handling, and environmental performance.

Achieve high energy savings

Efficient pressure and shear between the particles ensure that energy goes directly into breaking them apart, which greatly reduces the amount of energy needed for grinding.

The built‑in classifier works under negative pressure to immediately remove fine material. This prevents overgrinding and avoids unnecessary internal recirculation.

Together, these features allow for a very high reduction ratio, making single‑stage grinding possible and removing the need for multiple grinding and classification steps.

As a result, the VRM can use up to 40% less energy than traditional ball mill systems—delivering higher efficiency, lower operating costs, and reduced CO₂ emissions.

Optimize your footprint

The innovative grinding technology provides significant footprint advantages and removes the need for intermediate thickening.

Thanks to the Metso Loesche VRM's high reduction ratio advantages, a VRM circuit simplifies conventional comminution in tertiary crushing and grinding.

The Metso Loesche VRM allows for future expansion with it's unique ramp up capability and high scalability.

Achieve high throughput and outstanding reduction ratios

The Metso Loesche VRM combines multiple process stages into one highly efficient machine. Capable of handling an F100 of less than 150 mm, producing a finely ground P80 below 20 microns and an impressive reduction ratio of more than 3000:1. The VRM streamlines operations by integrating crushing, grinding, classifying, and material transport within a single unit. This design not only boosts productivity and simplifies flowsheets but also ensures consistent, high‑quality ultrafine output for downstream processes.

The result is a compact, high performance solution ideal for modern mineral processing plants aiming to maximize capacity and efficiency.

Improve mineral liberation

Thanks to its efficient grinding mechanism, the Metso Loesche VRM is able to deliver significantly improved mineral liberation which produces a steeper particle size distribution and reduces sulfide oxidation compared to traditional milling technologies.

This enhanced liberation directly supports improved downstream recovery, enabling concentrators to extract more value from the same ore. As a result, VRM operations achieve up to 7% better flotation performance, translating into higher overall plant efficiency and increased profitability.