# README: Filtration and Dynamic Image Analysis Data of Classified soda-lime glass beads

## 1. General Information
Title: Filtration and characterization data of classified Sigmund Lindner GmbH soda-lime glass beads in water-glycerin mixtures
Date of Collection: 2021-2026
Author/Contact: Ralf Schuenemann, Ralf.Schuenemann@mvtat.tu-freiberg.de
Location: Institut of Mechanical Process Engineering and Mineral Processing, TU Bergakademie Freiberg, 09599 Freiberg

## 2. Dataset Description
This dataset contains experimental raw data and characterization results for the study of cake-forming filtration. The focus lies on the correlation between particle morphology of classified soda-lime glass beads and its filtration resistance in a viscous medium.

### 2.1 Materials and Chemicals
- Disperse Phase: soda-lime glass (SiO2)
- Manufacturer: Sigmund Lindner GmbH
- Classification: Pre-classified using a Nisshin Turbo Classifier TC-15M
- Particle Size Range: 70 µm to 160 µm
- Continuous Phase: Binary mixture of Water and Glycerin
- Composition: 24 wt% Glycerin, 25 mM Potassium Iodide (KI)
- Chemical Supplier: Carl Roth GmbH + Co. KG (analytical grade)

**Note on Material Characterization:**
The materials used in these experiments correspond to those investigated in the doctoral thesis of Erik Löwer. Further comparative data and in-depth material studies can be found in his work (see [3]).
Complementary 3D-characterization data, including CT scans (Computed Tomography) and segmented individual particle data, are archived in the "Parrot" database of the TU Bergakademie Freiberg (https://parrot.tu-freiberg.de/).

### 2.2 Filtration Equipment & Methodology
- Standard: Conducted according to VDI 2762 (Cake-forming filtration)
- Apparatus: Custom-built laboratory filtration rig
- Control Software: Custom routine developed in LabVIEW 2021 (National Instruments)
- Data Format: .tdms (Technical Data Management Streaming)
- Logged Channels: 
    - Filtrate Mass [g]
    - Time [s]
    - Temperature [°C]
    - Pressure [bar]

### 2.3 Dynamic Image Analysis (DIA)
- Device: Sympatec QICPIC (Manufactured 2010)
- Software: WINDOX 5
- Optical Configuration: M6 lens system
- Field of View: 5 x 5 mm
- Resolution: 1024 x 1024 pixels
- Flow Cell: Measurement gap of 0.5 mm
- Data Format: .avi (Video files) and extracted particle characteristics

## 3. Data Structure & Usage
- /Filtration_Data: Contains TDMS files. These can be opened using NI LabVIEW, 
  the NI TDM Excel Add-In, or Python (via the 'npTDMS' library).
- /Image_Analysis: Contains AVI video files and metadata/result summaries 
  exported from WINDOX 5.

## 4. Citation and References
If you use this dataset in your research, please cite it as follows:
[E. Loewer (2026): Filtration and Particle Discrete Data (glass beads < 160 µm) for 'Project Development of multivariant structure and process models for filter cakes, combining experimental methods of process engineering with digital computer based methods', OPARA, DOI: https://doi.org/10.25532/OPARA-1174]

The experimental setup for filtration is based on:
VDI 2762 - Mechanical solid-liquid separation by cake-forming filtration.

## 5. References
[1] VDI 2762 Part 2:2010-12: Mechanical solid-liquid separation by cake-forming filtration - 
    Determination of the filter cake resistance. Verein Deutscher Ingenieure e.V.
[2] ISO 13322-2:2021: Particle size analysis — Image analysis methods — 
    Part 2: Dynamic image analysis methods.
[3] Löwer, E.: Development of Process Models for Multiphase Processes in the Pore Space of a Filter Cake based on 3D Information, Dissertation, TU Bergakademie Freiberg, 2021.
[4] Parrot Database: CT and segmented particle data repository, TU Bergakademie Freiberg, Institute of Mechanical Process Engineering and Mineral Processing. URL: https://parrot.tu-freiberg.de