OZ Minerals has awarded a €15 million ($24.3 million) contract to design and deliver a mine paste backfill system at the Prominent Hill copper-gold operation to Outotec.
The supply will include the complete paste backfill system, as well as detailed design of the underground distribution network and fill management systems. The paste backfill plant will be based on a unique process design, allowing flexibility to use continuously produced fresh tailings.
It also allows for filter cake to be stored in order to meet the future backfill needs of the underground mining operation.
The contract has been booked into Outotec’s 2019 second quarter order intake, with the new facility expected to have a capacity of 215 cubic metres per hour.
Prominent Hill produces one of the highest grades of copper concentrates in the industry, delivering over 100,000 tonnes of copper per year.
Head of Outotec Minerals Processing business Kimmo Kontola said the company was proud to work alongside OZ Minerals to provide an environmentally friendly way to manage its tailings.
“A reliable paste backfill system is critical to the whole mine and its operations. We are pleased to support our customer to improve their tailings management in a sustainable way,” he said.