A Comparative Study on the Separation of Different‐Shape Particles Using a Mini‐Hydrocyclone

Niazi, Saber; Habibian, Mahmoud; Rahimi, Masoud

doi:10.1002/ceat.201600322

Cited by 13 publications

(7 citation statements)

References 44 publications

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“…Particle classification using mini-hydrocyclones has been the focus of some experimental studies. Abdollahzadeh et al [7] showed that the classification efficiency in a 15mm hydrocyclone improves at low feed concentrations and high velocities, which is in agreement with the findings of Niazi et al [2].…”

Section: Introductionsupporting

confidence: 84%

“…the fraction of particles that reports to the underflow without classification, is normally equal to the water recovery. However, unlike large hydrocyclones, mini-hydrocyclones exhibit considerably larger bypass than the water recovery [1,2,3,4]. This large bypass makes mini-hydrocyclones ideal for dewatering applications but poses a disadvantage for classification due to the amount of misplaced particles go-2 ing to the underflow.…”

Section: Introductionmentioning

confidence: 99%

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CFD modelling of particle classification in mini-hydrocyclones

Vega-Garcia

Cilliers

Brito-Parada

2020

Separation and Purification Technology

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This work presents validated Computational Fluid Dynamics (CFD) predictions of the effect that changes in vortex finder and spigot diameters have on the classification performance of mini-hydrocyclones. Mini-hydrocyclones (e.g. 10 mm in diameter) have been applied successfully to the separation of micron-sized particles since their bypass fraction is larger than the water recovery, which results in a high particle recovery to the underflow, as well as low water recovery. However, a larger bypass fraction can be a disadvantage when the purpose of the hydrocyclone is particle classification, because of the large amount of fine particles that are misplaced in the underflow.Although it is well known that changes in the outlets of the hydrocyclone affect its performance, there is limited research on the effect of these design

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Section: Introductionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

CFD modelling of particle classification in mini-hydrocyclones

Vega-Garcia

Cilliers

Brito-Parada

2020

Separation and Purification Technology

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“…Several parameters affect the performance of hydrocyclones, including the inlet velocity, solid content, liquid-phase viscosity, particle size and shape, and so forth. Saber et al [20] believed that the separation effect would improve with the increase in the size of spherical particles, which was obviously better than that of plate-like particles. Also, the separation effect declined with the increase in the size of plate-like particles with diameters more than 60 µm.…”

Section: Influence Of Maximum Projected Area and Volume Changes On Sementioning

confidence: 99%

Effect of Particle Size and Shape on Separation in a Hydrocyclone

Tang

Wang

et al. 2018

Water

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Given the complex separation mechanisms of the particulate mixture in a hydrocyclone and the uncertain effects of particle size and shape on separation, this study explored the influence of the maximum projected area of particles on the separation effect as well as single and mixed separations based on CFD–DEM (Computational Fluid Dynamics and Discrete Element Method) coupling and experimental test methods. The results showed that spherical particles flowed out more easily from the downstream as their sizes increased. Furthermore, with the enlargement of maximum projected area, the running space of the particles with the same volume got closer to the upward flow and particles tended to be separated from the upstream. The axial velocity of the combined separation of 60 µm particles and 120 µm particles increased by 25.74% compared with that of single separation of 60 µm particles near the transition section from a cylinder to a cone. The concentration of 60 µm particles near the running space of 120 µm particles increased by 20.73% and those separated from the downstream increased by 4.1%. This study showed the influence of particle size and maximum projected area on the separation effect and the separation mechanism of mixed sand particles in a hydrocyclone, thereby providing a theoretical basis for later studies on the effect of particle size and shape on sedimentation under the cyclone action in a hydrocyclone.

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“…Note here that our review focuses on micro-/nanoscale separations of rigid particles in liquid phases. Therefore, we exclude shape-separation processes of powders or particles with larger than microscale size (>10 μm), such as microsieves (Furuuchi et al, 1993), cyclones (Niazi et al, 2017), and other powder separation processes (Furuuchi and Gotoh, 1992). Approaches with differential mobility analyzers (Beranek et al, 2012), where particles are dispersed in a gas phase, are also excluded.…”

Section: Introductionmentioning

confidence: 99%

Shape-based separation of micro-/nanoparticles in liquid phases

et al. 2018

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The production of particles with shape-specific properties is reliant upon the separation of micro-/nanoparticles of particular shapes from particle mixtures of similar volumes. However, compared to a large number of size-based particle separation methods, shape-based separation methods have not been adequately explored. We review various up-to-date approaches to shape-based separation of rigid micro-/ nanoparticles in liquid phases including size exclusion chromatography, field flow fractionation, deterministic lateral displacement, inertial focusing, electrophoresis, magnetophoresis, self-assembly precipitation, and centrifugation. We discuss separation mechanisms by classifying them as either changes in surface interactions or extensions of size-based separation. The latter includes geometric restrictions and shape-dependent transport properties.

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A Comparative Study on the Separation of Different‐Shape Particles Using a Mini‐Hydrocyclone

Cited by 13 publications

References 44 publications

CFD modelling of particle classification in mini-hydrocyclones

CFD modelling of particle classification in mini-hydrocyclones

Effect of Particle Size and Shape on Separation in a Hydrocyclone

Shape-based separation of micro-/nanoparticles in liquid phases

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