Equipment

Laboratory of Granular Materials

Equipment

RST-01 Ring Shear Tester

 

  • Two measurement chambers: 1 – shearing surface 235 cm2, volume 900 cm3; 2 – shearing surface 85 cm2, volume 200 cm3
  • Maximum measurable shearing force: 400 N; maximum measurable consolidation force: 500 N; shearing speed range: 0.05-30 mm/minPomiar siły ścinania do 400 N, pomiar siły konsolidującej do 500 N, prędkość ścinania: 0,05- 30 mm/min

Examples of use:

  • Determination of flowability of food powders
  • Determination of the shear strength of bulk materials
  • Determination of the friction coefficient against construction materials
  • Determination of sample density
  • Determination of the geometry of outflow from silos
  • Determination of processing parameters for design of storage containers

Jenike’s direct shearing devices for different granule sizes

 

 

  • Direct measurement of the tangent force with precision of 0.05 N
  • Diameters of devices: 60, 120, 210 mm, pressure range: 2-100 kPa, deformation speed: 2 mm/min, 4 mm/min

Examples of use:

  • Determination of flowability of food powders
  • Determination of the shear strength of bulk materials
  • Determination of the geometry of outflow from silos
  • Determination of processing parameters for design of storage containers

Uniaxial compression device with cylindrical chamber

 

  • Measurement of horizontal pressure; device diameter: 210 mm, maximum vertical pressure: 100 kPa, force measurement precision: 1 N

Examples of use:

  • Determination of the elastic modulus, pressure ratio, Poisson’s ratio and compressibility of plant granular solids and their behavior at various moistures
  • Determination of the pressure exerted by granular materials on silo walls

Uniaxial compression device „Joanna” with cubic chamber

 

  • Wall-to-wall distance: 8-95 mm, height: 120 mm, maximum vertical pressure: 100 kPa

Examples of use:

  • Determination of the pressure-strain relationship for bulk materials with simultaneous measurement of average pressure on chamber walls
  • Determination of the elasticity modulus, pressure ratio, and compressibility of bulk material beds
  • Investigation of the impact of bed formation methods on stress state
  • Analysis of stress distribution in a cubic section of the material bed

Hosokawa Powders Tester

 

  • Vibrator frequency: 50 Hz, amplitude: 0-3 mm; time adjustment range: 1-999 s, angular measurement precision: 0.1 deg, compaction amplitude: 18/10 mm

Examples of use:

  • Determination of angle of repose, angle of fall, angle of difference, aerated bulk density, compacted bulk density, compressibility, cohesion, uniformity, angle of spatula, dispersibility
  • Quality testing of powders
  • Determination of parameters for the design of processing

IPS UA analyzer, equipment for determination of granulation of solids in air

 

  • Possible application for measuring the sizes of wet and adhering particles, 0.5-1000 μm
  • Possible application for measuring the sizes non- adhering particles, 2 do 2000 μm

Examples of use:

  • Determination of particle size
  • Determination of the second mean particle dimension
  • Determination of the particle shape factor
  • Determination of the specific surface area of particles (with known grain porosity)

DEM modelling software suite, Altair EDEM

 

  • Modeling of mechanical processes involving bulk materials in a three-dimensional system
  • Importing device geometry from various CAD file formats (IGES, STL, STEP, and others)
  • Capability to model moving structural components of the device
  • Available contact models: linear elastic, nonlinear Hertz-Mindlin elastic model, Hertz-Mindlin model with cohesion, elasto-plastic model with adhesion, elastic model with hysteresis, bonded contact model
  • Ability to simulate electrical charge and heat transfer
  • Ability to simulate wear of structural components

Examples of use:

  • Analysis of interactions in bulk materials at the microstructural level
  • Analysis of the impact of particle shape on the simulated process
  • Analysis of the impact of particle size on the simulated process
  • Modeling of technological processes for elements with different material and geometric parameters to improve the efficiency of devices and processes
  • Modeling of filling and emptying processes in storage devices to prevent damage

Cyranose-320 – electronic nose with a matrix of 32 sensors based on conductive polymers

Agrinos – electronic nose with a matrix of 8 MOS type sensors with the possibility of selecting appropriate sensors focused on detecting specific volatile substances

  • analysis of changes in the intensity of the bouquet of odours of biological, agricultural and food materials,
  • detection of simple odours (e.g. chemical patterns)
  • detection of complex odours
  • testing the concentrations of volatile substances
  • analysis of volatile substances as a marker of microflora development
  • analysis of sensor responses (sensor drift, sensorgram)
  • creation of a sensor response library for the electronic nose
  • calibration of the electronic nose for the possibility of detecting specific markers of physicochemical phenomena

 

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