Metso Outotec set for SAG mill Premier at Northern Star’s Thunderbox

Metso Outotec says it will deliver a high-capacity, high-powered Premier™ SAG mill to Northern Star Resources Limited’s Thunderbox gold mine expansion project in Western Australia.

The typical value of such a delivery is approximately €15 million ($17.7 million) depending on the final scope, according to the OEM. The order has been booked in the company’s Minerals’ first half of 2021 orders received.

On award of Northern Star Resources’ largest mill to date, Northern Star’s General Manager Processing, Simon Tyrrell, said: “The Thunderbox expansion increases the operation’s hard-rock processing capacity to 6 Mt per annum from the current 3 Mt/a, and decreases processing costs as outlined in our 2021 Investor Day Presentation.

“Northern Star’s selection of Metso Outotec for the mill supply is supported by their locally-based expertise, large mill supply history and ongoing collaboration with Northern Star.”

Earlier this month, GR Engineering Services executed an engineering, procurement and construction contract with Northern Star Resources in relation to the expansion project.

Christoph Hoetzel, Head of Grinding Business Line at Metso Outotec, said: “We are pleased to be chosen as a supplier for the Thunderbox expansion. The gear-driven Premier SAG mill to be delivered will feature 18 MW of motor power.

“With the Premier mill range, we advance our unrivaled innovation legacy providing our customers with most reliable technology, engineered to exceed their specific requirements. We are looking forward to continue the collaboration with Northern Star Resources and to be part of their success story.”

The Premier horizontal grinding mills are customisable solutions built on state-of-the-art grinding mill technology, process expertise and design capability, the company says. The Premier horizontal grinding mills are engineered to “excel and create vast possibilities” for customers and applications.

These mills can be integrated with Metso Outotec mill reline equipment and are supported by the company’s extensive services network to ensure optimisation during the mills’ lifetime, the company says.