Smaltjärnens deponi för anrikningssand i Yxsjöberg
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Published: 2 March 2016

The Swedish team includes multidisciplinary research collaboration between applied geochemistry, ore geology, mineral processing and hydro at the university. Additional Tasman Minerals and AB Yxsjö Mines supports the project in Sweden. The study site in Sweden is Yxsjöberg mine containing mining waste resulting from the extraction of tungsten, copper and fluorite, which started in the early 1900s.

Cooperation in this project is innovative in the sense that the separation of minerals and extraction of metals from historic mining not only based on technical and economic criteria, but also consider environmental aspects. The project includes detailed characterization and risk assessment of mining waste are based on the vertical sampling of tailings. To be able to extract more metals and minerals from complex and oxidized ores processed metals including inaccessible, new innovative technologies are required and site-specific extraction processes need to be identified and developed. The decision to extract mining waste must be based on an integrated approach that includes environmental and economic considerations, technical feasibility, safety and community acceptance. The remaining residue should be less harmful than before extraction, therefore technology to stabilize or clean up harmful residues are also included in the project.