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Metso to deliver key crushing and grinding technology to the Hemi Gold Project in Australia

Metso Premier ball mill
Metso Asia
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Metso Premier ball mill


  • De Grey Mining Limited has selected Metso for the supply of a Superior™ MKIII 50-65 primary gyratory crusher and two 14MW Premier™ ball mills for the Hemi Gold Project in Western Australia, with the order exceeding EUR 20 million.

  • The Hemi Gold Project aims to become a top 5 Australian Gold Mine in terms of production, featuring a 10+ Mtpa process circuit with state-of-the-art equipment for responsible ore processing.

  • Metso's Superior™ MKIII primary gyratory crusher is highlighted for its efficiency and safety, serving as the core of the Hemi Gold’s processing circuit, while the Premier™ ball mills are noted for optimized grinding performance and high availability.

  • The equipment includes Metso's Polymer Hydrostatic Shoe Bearing (HSB) systems, enhancing reliability and reducing maintenance costs for the concentrator.

  • Metso's upcoming Karratha Service Centre in the Pilbara region, set to be its largest globally, will support the Hemi plant and other customers with advanced technologies and sustainable aftermarket solutions.

  • Metso boasts a comprehensive selection of horizontal grinding mills, including energy-efficient Metso Premier™ and Select™ mills, supported by an extensive service network and a wide range of mill linings and relining services optimized for various applications.

Australian mining company De Grey Mining Limited has awarded Metso orders for a Superior™ MKIII 50-65 primary gyratory crusher and two 14MW Premier™ ball mills. The equipment will be installed at De Grey Mining’s Hemi Gold Project located in the Pilbara region of Western Australia. The combined order value of over EUR 20 million is booked in the Minerals segment’s first-quarter 2024 orders received. 


“Our aim with the Hemi Gold Project is to deliver a Tier 1 gold project and make a future top 5 Australian Gold Mine from a production perspective. The 10+ Mtpa process circuit will be equipped with state-of-the-art equipment and proven technologies contributing to responsible ore processing. We’ve just partnered with Metso in delivering the first key items for the process circuit, namely the primary gyratory and ball mills, and we’re looking to make the rest of the process equipment decisions soon. De Grey will make a series of payments according to milestones achieved over the manufacturing period and final commissioning, typical for contracts of this nature, commencing in March 2024,” says Glenn Jardine, Managing Director of De Grey Mining. 

“Metso’s third generation Superior™ MKIII primary gyratory crusher, renowned for its safe and efficient operation, will be the driving force for Hemi Gold’s entire processing circuit, and the two Premier™ ball mills will provide optimized grinding performance and the highest availability for the concentrator. Both mills are equipped with failsafe Metso Polymer Hydrostatic Shoe Bearing (HSB) systems, significantly increasing reliability and reducing maintenance costs,” says Kai Rönnberg, Vice President, Minerals, Asia Pacific at Metso. 

“We look forward to working on this project and future ones with De Grey Mining. In terms of servicing our customers when plants are operational, Metso also has an extensive footprint in Australia. Our state-of-the-art Karratha Service Centre in the Pilbara, which will be Metso’s largest Service Centre globally, opens this March. The Karratha Service Centre will be able to support our customers, as well as the Hemi plant, with the latest technologies and sustainable aftermarket solutions,” concludes Rönnberg.

Metso Superior MKIII gyratory crusher<br>IMAGE SOURCE: Metso

About the products

The Metso Superior™ MKIII primary gyratory crushers provide high throughput and less downtime, enabling maximum efficiency for the operation. The product family has been developed especially to meet the needs of customers with changing ore grades and conditions in mining operations. Metso also provides a comprehensive scope of spare and wear parts and services to optimize the crushing circuit operation throughout the lifecycle. Since the product family’s launch in 2018, Metso has sold more than 50 Superior™ MKIII primary gyratory crushers around the world.

For horizontal grinding mills, Metso offers the industry’s widest selection, including the Planet Positive Metso Premier™ and Select™ mills. The energy-efficient mills can be easily integrated with Metso mill relining equipment and are supported by an extensive services network to ensure optimization during the mills’ lifetime. Metso also offers the market’s most comprehensive mill linings range and relining services, with materials and designs optimized for each application.

Source: Metso