Metso Hall 7 / K21

Metso's Larox® brand story

For 45 years, Larox^® filters have been known and loved around the world. Today, the Larox® portfolio remains a strong pillar within the Metso filtration portfolio, offering products with exceptional quality and a comprehensive service offering with unmatched expertise. But there's more to Larox® than just products; it's a brand that has built international relationships and fostered a sense of community that stands the test of time.

Larox was founded by Nuutti Vartiainen in 1977. Based in Lappeenranta, the company started with simple vacuum disc filters. It later developed into today's flagship product, the Larox PF, pressure filter. Consistently the brand name in filtration has grown and diversified into many different processes and applications: mining, petrochemical, food, pharmaceutical, a wide range of industrial processes and chemical applications. This allowed Metso to make the brand name known in many new markets and countries.

Although the Larox product selection has grown, the original pressure filter, Larox PF, remains perhaps the most recognized due to its long history and strong market placement. If we talk about Larox globally today, everything comes back to the Larox PF filter. The Larox brand is synonymous with world-class pressure filters, it is seen as the industry pioneer, not just a first-class pressure filter. The slogan ‘Larox separates the best from the rest’ is undoubtedly true and this will never be forgotten.

Today, Metso has the most comprehensive filtration portfolio on the market with 15 different types available for hundreds of mining and industrial applications. Five filters in the portfolio are under the Larox product family: Larox PF, Larox PF-DS, Larox FFP, Larox RT and Larox RT-GT. Each of these products belongs to the Planet Positive portfolio, which means that their sustainable performance has been evidenced through comparison and data, and as a result, they help our customers reach sustainability priorities such as reducing CO₂ emissions and water usage.

Metso has a state-of-the-art, unique Dewatering Technology Center (DTC) in Lappeenranta, Finland. The center is dedicated to the research and testing of dewatering equipment. We have completed over 14,000 filtration tests and can perform end-to-end testing for hundreds of mining and industrial applications.

Still, Larox can be considered a synonym for filters, and Metso’s Larox filters are known as some of the best filters in the world. This is thanks to the long legacy built by talented people over the years and high-quality products.

Today, Metso continues the journey of Larox filters to set industry standards with innovative products and services that exceed our customers’ expectations.

Metso introduces upgraded Larox® PF 60 series pressure filter and new machining unit at Filtration Technology Center in Finland

Metso is introducing the upgraded Larox® PF 60 series pressure filter at the opening ceremony of the new machining unit at the company’s Filtration Technology Center in Lappeenranta, Finland, on September 11, 2024.

“The new version of the Larox® PF 60 series filter marks a step change in the technological development of tower filters. It significantly improves safety, process efficiency and dewatering capacity in mining and other process industry applications, thanks to its novel technological solutions. This upgraded model is fully automated to enable flexible operation for process variations and is future-ready for different plate pack configurations to provide consistent and homogenous filter cake with efficient solids wash,” says Jussi Venäläinen, Vice President of the Filtration business line at Metso.

The Larox® PF 60 series filter is part of Metso’s Planet Positive offering, thanks to its advanced features that decrease water and oil usage by up to 90% and 75%, respectively. In addition, it can reduce the need for installed electric power by 25%. The filter has a compact and open design, which translates to less floor space required and a significant improvement in ease of maintenance. The structure has also been upgraded to meet the latest seismic standards. To ensure optimized lifelong performance, Metso offers a comprehensive service portfolio including remote support.

New machining unit brings more capacity and increased quality

“The investment into a new machining unit at our Filtration Technology Center in Lappeenranta goes hand in hand with the development of the Larox® PF 60 pressure filter and our ambition to offer our customers the best and most responsible filtration technology available. The highly automated machining unit significantly increases our manufacturing capacity and enables the production of high-quality filter components in a safer, more environmentally friendly manner,” explains Tero Tiainen, Director for Filters Manufacturing at Metso.