Maaden selects Metso to deliver a gold processing plant to the Ar Rjum project in Saudi-Arabia

Maaden has commissioned Metso to supply a gold processing plant for their Ar Rjum mine located in the Makkah Region, approximately 200 km northeast of Ta’if, Ar Rjum in Saudi-Arabia. The order value is approximately EUR 128 million, of which 24 million was booked in the Minerals segment’s 2025 third-quarter order intake, and 104 million in the fourth quarter. Advisory services for equipment installation, commissioning, and start-up are also included in the delivery under a separate Service contract, which will be booked later.  

Metso’s delivery includes an end-to-end gold processing line from ore to doré consisting of a crushing station, related conveying systems, a grinding circuit including SAG and ball mills with auxiliary equipment, pre-leaching and CIL leaching circuit and final tailings thickeners, gravity separation circuit, elution plant, and gold room technologies. In addition, Metso will provide process electrification, field instrumentation, and automation, as well as detailed engineering for the processing plant.  

“We are honored to be Maaden’s partner in this landmark project, which not only strengthens our long-standing collaboration but also aligns closely with Saudi Arabia’s national strategy to expand and diversify its mining industry. By delivering advanced, sustainable gold processing solutions and comprehensive services, Metso is proud to support the Kingdom’s vision for increased gold production and responsible resource development,” said Piia Karhu, President, Minerals at Metso. 

Comprehensive gold processing expertise and local support already for 25 years 

Metso is a global leader in sustainable gold processing technologies, offering complete, end-to-end solutions that cover every stage from ore to doré. Metso’s technological solutions and services, many of which are part of the Metso Plus offering, enable gold processing customers to improve their productivity, energy and water efficiency, and improve environmental performance in gold production. 

Metso has had a local presence in the Middle East for over 25 years. The company views the region as a growth market due to its mineral resources and infrastructure development needs. Metso's local team is geared up to provide value added solutions to the customer in process technologies, as well as long term life cycle service support. 

Find out more about Metso gold processing technology on our website.