The effect of cone ratio on the separation efficiency of small diameter hydrocyclones

Kılavuz, Feyza Şahin; Gülsoy, Özcan Y.

doi:10.1016/j.minpro.2010.11.006

Cited by 27 publications

(9 citation statements)

References 12 publications

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“…32 As the inlet air volumetric flow rate increases, the “fish-hook” is no longer so prominent, consistent with the results of the Kilavuz and Gülsoy studies. 33 The reason for this may be related to the particle migration trajectory mentioned earlier, and further research is needed. Particles in the 0.5–1.0 μm range are directly dragged to the vortex finder, resulting in reduced efficiency.…”

Section: Resultsmentioning

confidence: 99%

Effect of Inlet Air Volumetric Flow Rate on the Performance of a Two-Stage Cyclone Separator

2018

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It is very important to improve the cyclone separator separation efficiency for fine particles. On the basis of the Reynolds stress model (RSM), a new two-stage cyclone separation device is modeled and the model is simulated under six kinds of air volumetric flow rate conditions. The two-stage cyclone separator was then tested in the laboratory and the experimental data were compared with the simulation data. The results show that the RSM model can predict the performance of the two-stage cyclone separation device with high accuracy. Increasing of the air volumetric flow rate can not only improve the separation efficiency of the two-stage cyclone separator, but also effectively change the classification range. Because of the centrifugal force, even if the pressure drop is low, the 1st-cyclone can completely separate particles above 5.0 μm. When the air volumetric flow rate is more than 290 m 3 /h, the 2nd-cyclone can effectively separate the particles below 2.0 μm. The study also confirmed the nonlinear relationship between the pressure drop and the cut-off particle size and the maximum particle size. When the pressure drop exceeds a certain value, there is no longer any effect on the cut-off particle size and the maximum particle size.

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Section: Resultsmentioning

confidence: 99%

Effect of Inlet Air Volumetric Flow Rate on the Performance of a Two-Stage Cyclone Separator

2018

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“…However, based on 161 tests on 25.4 and 50.8 mm cyclones with widely varying design and operating conditions, Kilavuz and Gülsoy (2011) report that fish hook is more prominent at low inlet pressures; disappears in low cone ratio and high bypass conditions.…”

Section: Cfd Modelsmentioning

confidence: 99%

“…Conspicuously, the actual efficiency does not start at R f for near zero sized particles according to most reporting fish hook effect, in tune with Laplante and Finch (for example, Frachon and Cilliers, 1999;Kraipech et al, 2002;Schubert, 2010;Kilavuz and Gülsoy, 2011). However, the shape of the actual efficiency curve reported is typically:…”

Section: Introductionmentioning

confidence: 96%

“…In fact, Roldan-Villasana et al (1993) who conducted a systematic investigation of this phenomenon attribute its sporadic and random occurrence for not being accepted unquestionably. More recently, Kilavuz and Gülsoy (2011) and Kraipech et al (2002) reported fish hooks in all cyclone -material systems studied by them, though it is not prominent in all test conditions. However, Coelho and Medronho (2001) report that no fish hook effect is observed in any of their tests.…”

Section: Introductionmentioning

confidence: 99%

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Fish hook effect in centrifugal classifiers – a further analysis

Nageswararao¹,

Medronho

2014

International Journal of Mineral Processing

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“…Both experimental and theoretical studies by domestic and foreign scholars have generated a series of landmark research results in terms of research methods and content. In terms of the optimization of the structural parameters of the hydrocyclone, the representative studies include experimental studies on the hydrocyclone column height and diameter [14,15], feed inlet type and size [16,17], overflow pipe diameter, length, and shape, overflow pipe thickness [18][19][20], underflow outlet diameter, and shape, ratio relationship between the underflow outlet and overflow outlet [21][22][23]. A series of new hydrocyclone types have been designed, such as the built-in structural hydrocyclone [24,25], underflow outlet filled with flushing water [26], multi-stage series or parallel hydrocyclone [27][28][29], and three-product cyclone [30,31].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Field Characteristics and Separation Performance Test of Multi-Product Hydrocyclone

et al. 2019

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A traditional hydrocyclone can only generate two products with different size fractions after one classification, which does not meet the fine classification requirements for narrow size fractions. In order to achieve the fine classification, a multi-product hydrocyclone with double-overflow-pipe structure was designed in this study. In this work, numerical simulation and experimental test methods were used to study the internal flow field characteristics and distribution characteristics of the product size fraction. The simulation results showed that in contrast with the traditional single overflow pipe, there were two turns in the internal axial velocity direction of the hydrocyclone with the double-overflow-pipe structure. Meanwhile, the influence rule of the diameter of the underflow outlet on the flow field characteristics was obtained through numerical simulation. From the test, five products with different size fractions were obtained after one classification and the influence rule of the diameter of the underflow outlet on the size fraction distribution of multi-products was also obtained. This work provides a feasible research idea for obtaining the fine classification of multiple products.

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The effect of cone ratio on the separation efficiency of small diameter hydrocyclones

Cited by 27 publications

References 12 publications

Effect of Inlet Air Volumetric Flow Rate on the Performance of a Two-Stage Cyclone Separator

Effect of Inlet Air Volumetric Flow Rate on the Performance of a Two-Stage Cyclone Separator

Fish hook effect in centrifugal classifiers – a further analysis

Numerical Simulation of Flow Field Characteristics and Separation Performance Test of Multi-Product Hydrocyclone

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