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    Betolar–EcoGraf–GTK Epanko tailings trial: design and risk notes for mine planners

    February 12, 2026|

    Reviewed by Joe Ashwell

    Betolar–EcoGraf–GTK Epanko tailings trial: design and risk notes for mine planners

    First reported on International Mining – News

    30 Second Briefing

    Betolar has entered a strategic collaboration with EcoGraf and the Geological Survey of Finland (GTK) at the Epanko graphite project in Tanzania to test whether mine tailings can be reprocessed using Betolar’s metal extraction technology. The process is designed to enhance metal recovery from graphite tailings while generating secondary raw materials suitable for low-clinker binders and other construction products. For mine planners and tailings engineers, this signals potential shifts in tailings characterisation, storage design and long-term geochemical behaviour if waste streams are repurposed as feedstock.

    Technical Brief

    • Collaboration centres on Epanko graphite project tailings in Tanzania, involving Betolar, EcoGraf and GTK.
    • GTK’s role likely includes mineralogical, geochemical and leaching characterisation of Epanko tailings streams.
    • Betolar’s process targets residual metals in graphite-processing tailings, implying chemical or hydrometallurgical extraction stages.
    • Secondary raw materials are intended for low-clinker binders, suggesting pozzolanic or alkali-activated tailings products.
    • Integration with EcoGraf’s flowsheet will require tailings handling modifications to separate suitable fractions for reprocessing.
    • Geochemical alteration of tailings via extraction may change long-term drainage chemistry and cover design assumptions.
    • Construction-product reuse would demand compliance with leachability and strength standards for cementitious materials.
    • Similar graphite projects could reassess tailings as potential binder feedstock, influencing future mining waste strategies.

    Our Take

    Graphite appears alongside lithium, nickel and rare earths in our database’s critical minerals coverage, and the related Verisk Maplecroft piece (12 Feb 2026) underscores that projects like Epanko in Tanzania will be benchmarked against South American assets on both stability and ESG performance.

    For EcoGraf, which is Australia-based but advancing the Epanko graphite project in Tanzania, demonstrating innovative tailings reuse with partners such as GTK and Betolar could materially strengthen its social licence and permitting narrative relative to other African graphite hopefuls in our coverage.

    Within the 1930 tag-matched pieces on projects and sustainability, there are only a handful where tailings are treated as a potential product stream rather than a waste liability, so any successful tailings valorisation at Epanko mine would place the project at the leading edge of graphite-sector waste management practice.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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