6533b851fe1ef96bd12a9847
RESEARCH PRODUCT
On the use of a powder rheometer to characterize the powder flowability at low consolidation with torque resistances
Denis SchützHamid SalehiRichard RomirerMassimo PolettoDiego Barlettasubject
Environmental EngineeringMaterials scienceLow consolidationGeneral Chemical EngineeringRheometerMechanical engineering02 engineering and technologyQ1RotationPowder flowabilityImpeller020401 chemical engineeringAir flow rateTorqueChemical Engineering (all)Fluidization0204 chemical engineeringComposite materialAerated powders; Low consolidation; Powder cell; Powder flowability; Torque measurement and estimation; Biotechnology; Environmental Engineering; Chemical Engineering (all)Consolidation (soil)021001 nanoscience & nanotechnologyTorque measurement and estimationTAPowder cellAerated powdersAeration0210 nano-technologyBiotechnologydescription
The Anton Paar Powder Cell was used to measure the torque necessary to rotate an impeller in beds of glass beads, sand and alumina powders aerated between no aeration to the minimum for fluidization. Measured torque values depend on the material tested, on the air flow rate applied, on the impeller depth and on the height of the impeller blade. The effect of the impeller depth is linear for low impeller depth and is less than linear at high depth values. A model was developed for the interpretation of the experimental results based on the idea that the material is shearing on the surface described by the impeller rotation. The model allows to estimate an effectiveness of the impeller in the torque determination and also to predict the torque for the impeller at the at deepest positions at which the wall effects have to be considered. © 2017 American Institute of Chemical Engineers AIChE J, 2017
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-10 | AIChE Journal |