Metso Awarded an Order for Energy-Efficient Comminution Equipment for Sotta Mining’s Nyanzaga Gold Project in Tanzania

Perseus Mining Limited’s 80% owned subsidiary Sotta Mining Corporation Ltd. has awarded Metso an order for a Superior^™ MKIII 4265 primary gyratory and two Metso Plus Premier^™ grinding mills with a total installed power of 21 MW. The equipment will be installed at Sotta Mining’s Nyanzaga gold project in northwest Tanzania. The order value exceeds EUR 20 million and it has been booked in the Minerals segment’s 2025 first-quarter orders received.

Matt Cavedon, General Manager, Project Development at Perseus, noted: “Perseus is looking forward to the successful deployment of Metso’s state-of-the-art comminution technology, alleviating gearboxes with the benefits of precision control and high efficiency.”

“The Premier^™ SAG mill and ball mill to be delivered to the Nyanzaga project feature low-speed synchronous motor drives without conventional gearboxes. This makes the mills very reliable and very efficient – a 2% saving in energy consumption when compared to traditional gearbox-driven mills. Both mills are equipped with Metso’s fail-safe Polymer Hydrostatic Shoe Bearing systems, significantly increasing reliability and reducing maintenance costs,” says Oskar Gustavson, Technology Director, Grinding at Metso.

Metso’s Premier^{™​​​​​​​} horizontal grinding mills are completely customizable solutions built on state-of-the-art grinding mill technology, process expertise, and design capability. The Premier^{™​​​​​​​} horizontal grinding mills are engineered to excel and create vast possibilities for customers and applications. In addition, Metso’s offering includes pre-engineered Select^{™​​​​​​​} horizontal grinding mills and state-of-the-art mill reline equipment, as well as a broad selection of liner options, including the innovative Megaliner^{™​​​​​​​}. Complementary services include horizontal mill inspections programs, Life Cycle Services (LCS) contracts for planned shutdowns and maintenance, and a full range of spare and wear parts. Metso's Superior^{™​​​​​​​} MKIII primary gyratory crushers provide high throughput and less downtime to maximize operational efficiency.