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X-ray tomography scans of filter cakes (feed slurry: variation in fraction of fines)
Subtitle: variation of the fine fraction by 0, 20, 30, 40, 50, 60 and 100 vol.-% in the feed slurry
Metadaten
| Ergänzende Titel | Subtitle: variation of the fine fraction by 0, 20, 30, 40, 50, 60 and 100 vol.-% in the feed slurry | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020045_008 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020045_009 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020045_010 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_02_001 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_02_004 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_02_011 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_03_005 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_04_002 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_04_006 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_04_009 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_05_007 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_06_003 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_06_008 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_020200_06_010 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_055200_013 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_055200_015 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_055200_022 | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | Peuker, Urs Alexander - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | Leißner, Thomas - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | German Research Foundation - Sponsor | |
| Für den Inhalt der Forschungsdaten verantwortliche Person(en) | Löwer, Erik - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing (ORCID: 0000-0002-6956-8054) | |
| Beschreibung der weiteren Datenverarbeitung | automatic centre shift, beam hardening correction (factor 0.05), gauss smoothing filter (kernel 0.7) | |
| Art der Erhebung der Daten | Experiment: in-situ filtration and dewatering (downscaled pressure nutsch 5 mm diameter) according VDI 2762-2 and VDI 2762-3 | |
| Verwendete Forschungsinstrumente | X-ray microscope (ZEISS Xradia Versa 510) | |
| Zugrundeliegende Forschungsobjekte | Substance: gamma-Al2O3 (manufacturer: Almatis, solid powder, 20...45 µm) | |
| Zugrundeliegende Forschungsobjekte | Substance: gamma-Al2O3 (manufacturer: Almatis, solid powder, 55...200 µm) | |
| Zugrundeliegende Forschungsobjekte | Substance: glycerol (manufacturer: Carl Roth, > 99,8 %, 24 m.-%) | |
| Zugrundeliegende Forschungsobjekte | Substance: potassium iodide (manufacturer: Carl Roth, > 99 %, 25 mmol/l) | |
| Kurzbeschreibung | X-ray tomography scans of partially dewatered filter cakes with variation of fine particles within the feed slurry. The mixture composition varies by addition of fines by 0, 20, 30, 40, 50, 60 and 100 vol.-%. The initial slurry contains Al2O3 particles suspended in a potassium iodide-glycerol solution and separated by cake-forming filtration. All filtration experiments took place in an in-situ apparatus inside the Zeiss Xradia 510 X-ray microscope. | |
| Angewendete Methoden oder Verfahren | VDI 2762-1, VDI 2762-2 and VDI 2762-3 | |
| Weitere erklärende Angaben zu den Daten | see note parameter.png in each measurement file for further measurement and reconstruction parameters | |
| Informationen zur Serie | Variation of the fine fraction by 0, 20, 30, 40, 50, 60 and 100 vol.-% in the feed slurry. For all mixtures two self-similiar Al2O3 particles systems (20...45 µm and 55...200 µm) are used. | |
| Inhaltsverzeichnis | CF_035_020045_008 (in-situ filtration and dewatering, 100 vol.-% fine fraction), CF_035_020045_009 (in-situ dewatering, 100 vol.-% fine fraction, total filter cake), CF_035_020045_010 (in-situ dewatering, 100 vol.-% fine fraction, total filter cake), CF_035_020200_02_001 (in-situ filtration and dewatering, 20 vol.-% fine fraction), CF_035_020200_02_004 (in-situ dewatering, 20 vol.-% fine fraction, total filter cake), CF_035_020200_02_011 (in-situ dewatering, 20 vol.-% fine fraction, total filter cake), CF_035_020200_03_005 (in-situ dewatering, 30 vol.-% fine fraction, total filter cake), CF_035_020200_04_002 (in-situ filtration and dewatering, 40 vol.-% fine fraction), CF_035_020200_04_006 (in-situ dewatering, 40 vol.-% fine fraction, total filter cake), CF_035_020200_04_009 (in-situ dewatering, 40 vol.-% fine fraction, total filter cake), CF_035_020200_05_007 (in-situ dewatering, 50 vol.-% fine fraction, total filter cake), CF_035_020200_06_003 (in-situ filtration and dewatering, 60 vol.-% fine fraction), CF_035_020200_06_008 (in-situ dewatering, 60 vol.-% fine fraction, total filter cake), CF_035_020200_06_010 (in-situ dewatering, 60 vol.-% fine fraction, total filter cake), CF_035_055200_013 (in-situ filtration and dewatering, 0 vol.-% fine fraction), CF_035_055200_015 (in-situ dewatering, 0 vol.-% fine fraction, total filter cake), CF_035_055200_022 (in-situ dewatering, 0 vol.-% fine fraction, total filter cake) | |
| Weitere Schlagwörter | cake filtration, cake dewatering, X-ray tomography, in-situ, VDI 2762 | |
| Sprache | eng | |
| Entstehungsjahr oder Entstehungszeitraum | 2018-2019 | |
| Veröffentlichungsjahr | 2021 | |
| Herausgeber | Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing | |
| Referenzen auf ergänzende Materialien | IsSourceOf: 10.1007/s11242-021-01600-7 (DOI) | |
| Inhalt der Forschungsdaten | Dataset: X-ray tomography scans of filter cakes (.tiff stacks) | |
| Inhaber der Nutzungsrechte | Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing | |
| Nutzungsrechte des Datensatzes | CC-BY-4.0 | |
| Eingesetzte Software | Resource Production: Xradia XMReconstructor 10.7 | |
| Nähere Beschreibung der/s Fachgebiete/s | mechanical process engineering - solid-liquid separation - cake filtration and dewatering | |
| Angabe der Fachgebiete | Engineering | de |
| Titel des Datensatzes | X-ray tomography scans of filter cakes (feed slurry: variation in fraction of fines) |
Dateien zu dieser Ressource
Die Datenpakete erscheinen in:
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Publication B: Neighborhood Relationships of Widely Distributed and Irregularly Shaped Particles in Partially Dewatered Filter Cakes [1]
A more thorough understanding of the properties of bulk material structures in solid–liquid separation processes is essential to understand better and optimize industrially established processes, such as cake filtration, whose process outcome is mainly dependent on the properties of the bulk material structure. Here, changes of bulk properties like porosity and permeability can originate from local variations in particle size, especially for non-spherical particles. In this study, we mix self-similar fractions of crushed, irregularly shaped Al2O3 particles (20 to 90 μm and 55 to 300 μm) to bimodal distributions. These mixtures vary in volume fraction of fines (0, 20, 30, 40, 50, 60 and 100 vol.%). The self-similarity of both systems serves the improved parameter correlation in the case of multimodal distributed particle systems. We use nondestructive 3D X-ray microscopy to capture the filter cake microstructure directly after mechanical dewatering, whereby we give particular attention to packing structure and particle–particle relationships (porosity, coordination number, particle size and corresponding hydraulic isolated liquid areas). Our results reveal widely varying distributions of local porosity and particle contact points. An average coordination number (here 5.84 to 6.04) is no longer a sufficient measure to describe the significant bulk porosity variation (in our case, 40 and 49%). Therefore, the explanation of the correlation is provided on a discrete particle level. While individual particles < 90 μm had only two or three contacts, others > 100 μm took up to 25. Due to this higher local coordination number, the liquid load of corresponding particles (liquid volume/particle volume) after mechanical dewatering increases from 0.48 to 1.47.