Finland Advances Resource-Efficient Mineral Processing

Metso and GTK are developing a dual-line pilot facility to test grinding, sorting, flotation and water-saving technologies before commercial deployment.  www.metso.com Metso and the Geological Survey of Finland (GTK) are collaborating to engineer and deploy process technology for the new GTK Mintec pilot plant in Outokumpu, Finland. The facility functions as a testing and optimization environment for minerals processing and circular economy materials in the mining industry. Cooperation and Industrial Context The mining sector requires scalable testing environments to validate resource-efficient processing methods prior to full-scale commercial plant construction. To address this industrial requirement, GTK and Metso co-designed the facility's process lines. GTK provides the research framework and metallurgical testing expertise, while Metso is responsible for the engineering and delivery of the physical process technology. This integration of research methodology and industrial equipment manufacturing establishes a comprehensive testing platform for mineral extraction and side-stream recovery. Technical Solution and Responsibilities The facility is structured around two distinct process lines with differing operational capacities. This dual-line architecture permits both high-volume plant simulation testing and small-scale metallurgical evaluations using early-stage drill core samples. Metso will supply and integrate the beneficiation hardware, which includes High Pressure Grinding Rolls (HPGR), primary and fine grinding circuits, and advanced ore sorting systems. The technical scope also covers coarse and fine flotation applications, along with equipment for crushing, classification, and physical separation. These process nodes are configured to evaluate mechanisms for reducing water and chemical consumption during material upgrading. Deployment and Digital Infrastructure The pilot plant is scheduled to commence operations in Outokumpu by the end of 2028. The implementation phase involves connecting the mechanical processing units to a centralized digital infrastructure. The facility utilizes an integrated industrial automation network that continuously collects operational data from distributed measurement sensors across the process lines. This automated data acquisition standardizes test result analysis, minimizes manual sampling variability, and yields precise performance metrics for GTK's industrial clients. Applications and Operational Impact Target applications include process optimization for global mining operations, specifically focusing on resource efficiency and environmental management. Concrete technical use cases at the facility encompass the piloting of dry stacking methods for mine tailings and the execution of closed-loop process water circuits utilizing advanced filtration and water treatment technologies. By establishing baseline operational metrics in a controlled pilot environment, the facility allows mining operators to validate process stability, enhance mineral recovery rates, and optimize energy parameters before scaling up to commercial production. Edited by Aishwarya Mambet, Induportals Editor, with AI assistance. www.metso.com Powered by Induportals Media Publishing