Granulate and bulk characterization

This field covers the process-oriented characterization of single granules and bulk solids under climatically defined conditions (standard climate: 22 °C, 40 % relative humidity) with standard methods according to standardized procedures or SOP.

 

Products and services offered

 

• Technology-relevant, complex characterization of granulates and agglomerates
  • Primary characteristics (density, volume, shape, strength, porosity, sorption isotherms)
  • Processing properties (flowability, compaction behavior, storage behavior)
• Measurement routine to describe the properties of disperse products and comparison to the state-of-the-art
• Granulate size distribution with dry dispersion (2–2000 μm)
  
• Determination of the specific fracture load and deformability of granules (45–800 μm, maximal strength 5 N)
  
• Analysis of granulate and particle shape (> 15 μm)
  
• Definition of bulk behavior and flowability
• Bulk behavior at low pressures (< 20 MPa)
• Determination of granule structure and porosity (working group Ceramography)
  
• Compaction behavior at low and high compaction pressures (< 800 MPa) under adjustable climatic conditions (temperature 18–28 °C, relative humidity 15–85 %), (working group Dry Pressing, TU Dresden)
  
• Characterization of the debinding behavior of bulk solids and compacts of different materials and dimensions (working group Thermal Analysis)

 

Technical equipment

 

• Laser diffraction granulometer MS 2000 with dry dispersion, Malvern Instruments Ltd.
  
• Granulate strength testers (laboratory/automatic), etewe GmbH
  
• Dynamic image analysis QlCPlC, Sympatec GmbH
  
• Powder rheometer FT 4 with rotation shear cell, Freeman Technology Ltd.
  
• Powder tester, Hosokawa-Alpine AG
  
• Tap density autotap-1, Quantachrome Instr.
  
• Halogen moisture analyzer HR 73, Mettler-Toledo GmbH
  
• Dynamic sorption measuring system DVS1, Porotec GmbH
  
• Ring shear tester RST-01.01, Schwedes+Schulze Schüttguttechnik GmbH
  
• Scott volumeter, Hall flowmeter, Cold Gas Technology GmbH
  
• Friability tester PTF 20 ER, Pharma Test GmbH