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Currently, more than 80% of the world's copper is produced with electrorefining, as it gives the highest-purity metal product and the best recovery of valuable impurities. High-purity copper is indispensable for the clean energy transition, telecommunications, electronics and clean water infrastructure.
“Metso’s improved electrorefining technology enables seamless material flow. We offer not just individual machines, but also modular electrorefinery layouts and customer-specific optimized solution purification processes. For our customers, an integrated copper electrorefining process - from anodes to cathodes - ensures high-purity cathodes and safe, reliable operation throughout the plant’s lifecycle. Total cost of ownership and cathode replacement costs are minimized with machine integration, advanced digital solutions and service support. This technology is suitable for both new and existing operations,” says Noora Aro-Koivisto, Copper Electrorefinery Technology Manager at Metso.
About Metso’s electrorefining technology
Metso is a leading provider of copper electrorefining technology, with a proven track record and the industry’s widest range of solutions. The offering integrates Metso’s know-how and proven material handling technologies with advanced process control, resulting in a holistic system where all interfaces are optimized for high performance and quality.
Metso’s proprietary electrorefining equipment offering includes Outotec® Tankhouse material handling equipment, such as Anode Preparation Machines, Anode Scrap Washing Machines, Cathode Stripping Machines, Cranes, and process equipment for solution purification, such as OKTOP® reactors, OKTOP® autoclaves, LSF and Larox® PF filters, and the Outotec® Acid mist capture system.
Additionally, Metso offers advanced process monitoring and control system solutions, further improving operational safety and user-friendliness. High-quality spare parts, upgrades and the support of Metso’s global service network are also part of the offering.
Metso (metso.com) is a frontrunner in sustainable technologies, end-to-end solutions and services for the aggregates, minerals processing and metals refining industries globally. We improve our customers’ energy and water efficiency, increase their productivity, and reduce environmental risks with our product and service expertise. We are the partner for positive change.
Metso is headquartered in Espoo, Finland. At the end of 2024 Metso had close to 17,000 employees in around 50 countries, and sales in 2024 were about EUR 4.9 billion.
Further information:
Noora Aro-Koivisto, Copper Electrorefinery Technology Manager, Metso, T: +358 20 529 3031 - E: noora.aro-koivisto[.]metso.com.
Heidi Valle, Vice President, Communications and Brand, Metso Corporation, T: +358 20 141 3406 - E: heidi.valle[.]metso.com.
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helena.marjaranta[.]metso.com 
