Separation efficiency of liquid–solid undergoing vibration based on breakage of liquid bridge--颗粒学报PARTICUOLOGY

Chen, J., Shen, J., Guo, J., & Wang, G. (2022). Separation efficiency of liquid–solid undergoing vibration based on breakage of liquid bridge. Particuology, 61, 103-110. https://doi.org/10.1016/j.partic.2021.02.009

Separation efficiency of liquid–solid undergoing vibration based on breakage of liquid bridge

Jian Chen ^{a b}, Jiahe Shen ^{a c *}, Jie Guo ^a, Geoff Wang ^b

a School of Mechanical Engineering, The University of Newcastle, Callaghan 2308, Australia
b School of Chemical Engineering, The University of Queensland, St Lucia 4072, Australia
c Centre for Bulk Solids and Particulate Technologies, Newcastle Institute for Energy and Resources, The University of Newcastle, Callaghan 2308, Australia

10.1016/j.partic.2021.02.009

Volume 61, February 2022, Pages 103-110

Received 26 March 2020, Revised 10 November 2020, Accepted 22 February 2021, Available online 20 April 2021, Version of Record 27 October 2021.

E-mail: jiahe.shen@uon.edu.au

Highlights

• Established a VOF model for liquid bridge between two particles under vibration.

• Obtained the liquid bridge retention for different pairs of particles.

• Analysed the effects of the various factors on separation efficiency.

Abstract

Vibrating separation is a significant method for liquid–solid separation. A typical example is the vibrating screen to dewater wet granular matter. The properties of granular matter and the vibrating parameters significantly affect the separation efficiency. This study investigates the effect of vibration parameters in separation based on the breakage of large-scale liquid bridge numerically by using a calibrated simulation model. Through analysing the simulation results, the liquid bridge shape and the volume between two sphere particles for various particle sizes and particle distances were studied in the static condition under the effect of gravity. The results show a general reducing trend of liquid bridge volume when the radius ratio of two particles increases, particularly when the ratio increases to 5. Additionally, a set of vibrating motion was applied to the liquid bridge in the simulation model. A group of experiments were also performed to validate the simulation model with vibration. Then, the effect of vibrating peak acceleration, distance between spheres and radius on the separation efficiency which was reflected by the residual water were investigated. It is found that separation efficiency increased obviously with the peak acceleration and the increase slowed down after the peak acceleration over 1 m/s².

Graphical abstract

Keywords

Liquid bridge shape; Liquid bridge volume; Retention capacity; Vibration; VOF model

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