Metso Completes Acquisition of Swiss Tower Mills Minerals, Enhancing Grinding Technology Portfolio

Metso Oyj has announced the completion of its acquisition of Swiss Tower Mills Minerals AG (STM), following the receipt of all required regulatory approvals. STM specializes in vertical grinding mills, and its integration is expected to bolster Metso's existing portfolio of comminution solutions for the global mining industry.

The acquisition is positioned to enhance Metso's ability to provide energy-efficient comminution technologies, particularly for fine and ultra-fine grinding applications. STM's HIGmill™ technology is anticipated to complement Metso's Vertimill® and HRCTM high-pressure grinding roll technologies, enabling optimized multi-stage grinding processes for customers.

Metso highlighted a growing trend in the mining sector towards optimized technology combinations and multi-stage grinding approaches aimed at improving energy efficiency, reducing carbon emissions, and lowering operating costs. The company views the HIGmill™ as a key component in achieving these goals within comminution circuits.

Swiss Tower Mills Minerals, founded in 2011 with a focus on vertical stirred mills for high grinding performance and energy efficiency, has collaborated with Metso since 2012, when Metso became the exclusive distributor of HIGmill™ equipment. The acquisition brings STM's expertise and installed base into the Metso structure, expanding its capabilities in stirred mill technology.