COMPARISON TIO2 POWDERS FLOWABILITY TESTS

1,2 ŽÍDEK Martin
Co-authors:
1,2 HLOSTA Jakub 1 JEZERSKÁ Lucie 1,2 NEČAS Jan 1,2 ZÁDRAPA František
Institutions:
1 VBS – Technical University of Ostrava, ENET Centre, Bulk Solid Centre, 17.listopadu 15, 708 33 Ostrava, Czech Republic, EU, martin.zidek@vsb.cz
2 VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transportation, 17. listopadu 15, 708 33 Ostrava, Czech Republic, EU
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
810-815
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
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Abstract

In this work, four different flowability powder tests – angle of repose measuring, flow from hopper simulation, classical tube method and evaluation of flow functions using FT4 powder rheometer - were compared. The TiO2 powders with different content of nanoparticle were used for these comparisons. These powders were characterized by basic mechanical-physical parameters such as particle size distribution, density, moisture etc. The first flowability method (angle of repose measuring) uses stand with vibration feeder of fine powder material. Flow simulation method is based on powder flow from the hopper. Both mentioned test stands were created in Bulk Solids Centre Czech Republic. Third classical tube method is based on free pouring of powder on the pad. These three methods named above are evaluated on a static angle of repose. The fourth test is based on the calculation of the flow function as ratio major principal stress and unconfined yield strength measured using FT4 powder rheometer. Flowability methods of TiO2 powder have been compared. The advantages and disadvantages of the individual methods and the areas of their use have been identified.

Keywords: Flow, powders, angle of repose, titanium white, FT4 powder rheometer
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