European Resources has launched a new processing programme for its Korsnäs rare earth project in Finland, targeting the production of mixed rare-earth carbonate samples for downstream testing and potential customer qualification. The initiative moves the project beyond laboratory-scale extraction toward the preparation of an intermediate product for evaluation by refiners.
The ASX-listed company has entered into an agreement with ANSTO Minerals to process historical Korsnäs concentrate and produce mixed rare-earth carbonate (MREC). Initial laboratory-scale material is targeted for the fourth quarter of 2026, with larger batches planned for subsequent downstream testing and potential customer assessment. The programme will address the processing requirements involved in converting rare-earth concentrate into a carbonate product that can be evaluated for further refining and potential commercial applications.
Metallurgical Tests Improve Rare Earth Extraction Rates
Previous metallurgical work at Korsnäs increased combined magnet rare-earth extraction to approximately 92%, from 83%. Total rare-earth and yttrium extraction also improved, reaching around 93%, compared with 86%, following calcite removal. Individual extraction rates recorded during the earlier work included approximately 94% for praseodymium, 92% for neodymium, 69% for terbium and 66% for dysprosium.
These elements are used in high-performance permanent magnets for applications including electric vehicles, wind turbines and advanced electronics. The reported extraction figures provide the metallurgical basis for the next phase of processing development. Korsnäs has an Inferred Mineral Resource of approximately 15.4 million tonnes grading 1.00% total rare-earth oxides.
ANSTO Programme Targets Impurity Removal and Carbonate Production
The latest processing programme will focus on impurity removal, uranium separation, cerium reduction and carbonate precipitation. These steps are intended to produce a cleaner mixed rare-earth carbonate intermediate suitable for assessment by downstream processors. The planned work will progress from laboratory-scale material to larger batches for further testing and potential customer evaluation. The resulting material will allow downstream parties to assess the product rather than relying solely on extraction results from metallurgical testing.
The development objective is to establish a potential route for integrating Korsnäs material into a European rare-earth refining chain. Repeatable production of carbonate batches would provide material for customer qualification and support more detailed assessments of the project’s processing route.
Processing Development Involves Finnish Research Institutions and EU Programme
European Resources is also working with GTK Mintec, the University of Oulu and participants in the EU-backed REMHub programme on beneficiation and processing development. The ANSTO Minerals programme forms part of this broader technical work, with the immediate focus on producing mixed rare-earth carbonate from historical concentrate and preparing material for downstream evaluation.
Commercial Parameters Remain to Be Established
Korsnäs remains at an early technical stage, and the latest processing work has not established commercial operating costs, final recoveries or acceptance terms from European refiners.
The economic implications of the processing route will depend on further technical development, including the ability to reproduce the reported extraction performance and consistently produce carbonate with low impurity levels. The next material milestone is the production of repeatable mixed rare-earth carbonate batches that downstream buyers are prepared to test and potentially qualify. The results will provide a basis for further evaluation of the processing route and more advanced economic assessment of the Korsnäs project.
