Technische Universität Bergakademie Freiberg

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Research data repository of Freiberg University of Mining and Technology.

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Browsing Technische Universität Bergakademie Freiberg by Subject "3::34::316::316-01"

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  • ItemOpen Access
    Supplemental SEM-EDS (MLA) and CT data for the publication "CNN-based 3D characterization and liberation analysis of lithium-bearing slag particles using correlative CT and SEM imaging"
    (Technische Universität Bergakademie Freiberg, 2026-05-13) Ditscherlein, Ralf
    This dataset provides the underlying X-ray CT data and processed image stacks used for particle-scale characterization and evaluation of the proposed workflow. The study addresses the challenge of accurately characterizing lithium-bearing slag particles to improve recovery of critical raw materials. A correlative workflow combining 3D CT imaging with 2D SEM-based mineral maps is used to train convolutional neural networks for phase-wise and particle-wise segmentation. This enables scalable 3D characterization with minimal manual labeling effort. The models are applied to particle size fractions of 63–100 µm and 100–250 µm. Results show that conventional 2D approaches systematically overestimate mineral liberation, while the presented 3D approach reduces stereological bias and provides more reliable input for process optimization.
  • ItemOpen Access
    X-ray CT Data of Lunar Regolith Simulants and Gray Value Sensitive Simulation Data
    (Technische Universität Bergakademie Freiberg, 2026-02-18) Ditscherlein, Ralf
    This dataset provides reconstructed X-ray microtomography data of four lunar regolith simulants together with simulated data for method evaluation. The dataset enables reproducibility of the particle fingerprint visualization technique, supports exploration of imaging artifacts, and provides reference implementations in Python. It is intended for use in particle system characterization, image analysis, and method benchmarking.