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Mechanism study of ultrasonic-assisted screening of fine powder materials

Authors :
Yazhe Chen
Hongliang Yao
Source :
Journal of Physics: Conference Series. 2369:012016
Publication Year :
2022
Publisher :
IOP Publishing, 2022.

Abstract

The strong adsorption characteristics of fine power materials give rise to problems such as material conglomeration, blockage of sieve mesh and low process efficiency during screening, thus necessitating studies on processes like ultrasonic-assisted powder materials screening. In this study, based on the Derjaguin-Landau-Verwey-Overbeek theory, an energy balance model that takes into account the viscous force and ultrasonic vibration energy was first established; secondly, the force balance model was established as the breaking up of aggregates due to collisions between them during screening depends on the balance of forces on the aggregates; thirdly, the process of particle agglomeration and dispersion was studied via EDEM simulation; finally, the results of the experiment were used to verify the mechanism by which the ultrasonic auxiliary prevents material agglomeration and adsorption. The results showed that ultrasonic vibration can effectively scatter the particles, and improve the screening efficiency.

Details

ISSN :
17426596 and 17426588
Volume :
2369
Database :
OpenAIRE
Journal :
Journal of Physics: Conference Series
Accession number :
edsair.doi...........7bf6e7324447c9c7a4a0f3e2ba612fd6
Full Text :
https://doi.org/10.1088/1742-6596/2369/1/012016