The vertical grinding mills will be the largest of their kind installed in Australia, the company said in a statement.
It did not disclose specific details of the deal, but said the typical value for this kind of order is €10-€15 million (US$11.7-17.6 million), depending on the scope of delivery.
According to Metso Outotec, its Vertimill provides the lowest total cost of ownership compared to other grinding mills in many applications due to its high energy efficiency, lower media consumption, low installation cost and minimal liner wear and maintenance.
The mills can handle feed sizes up to 6mm and grind to products less than 20 microns.
Vertimill sizes range from 11 KiloWatts to 3,352kW.