Modeling classification in small-diameter hydrocyclones under variable rheological conditions

Tavares, Luís Marcelo; Souza, Luciana L.; Lima, José Renato Baptista de; Possa, Mario Valente

doi:10.1016/s0892-6875(02)00085-7

Cited by 43 publications

(24 citation statements)

References 12 publications

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“…3 Other hydrocyclone models include (Asomah, 1996;Castro, 1990;Kojovic, 1988;Marlow, 1973;Tavares et al, 2002;Xiao, 1997). Asomah (1996) included the cyclone inclination to the vertical position and attempted to develop an explicitly equation for the sharpness of separation.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

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A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

Narasimha

Mainza

Holtham

et al. 2014

International Journal of Mineral Processing

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Please cite this article as: Narasimha, M., Mainza, A.N., Holtham, P.N., Powell, M.S., Brennan, M.S., A semi-mechanistic model of hydrocyclones -developed from industrial data and inputs from CFD, International Journal of Mineral Processing (2014), doi: 10.1016/j.minpro.2014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ABSTRACTThe flow behavior in hydrocyclones is extremely complex, leading the designers to rely on empirical equations for predicting cyclone performance. A number of classifying cyclone models have been developed and used in mineral comminution circuit simulators in the past. The problem with these empirical cyclone models is that they cannot be used outside the range of conditions under which they were developed. A semi-mechanistic hydrocyclone model is developed using the dimensionless approach based on both the fluid mechanics concepts from

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Section: Accepted M Manuscriptmentioning

confidence: 99%

“…Where V t is the tangential velocity as has been calculated using equation (2) as suggested by Lilge (1962) and Tavares et al, (2002) …”

Section: Centrifugal Forcementioning

confidence: 99%

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

Narasimha

Mainza

Holtham

et al. 2014

International Journal of Mineral Processing

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“…As one can see later, the velocity field close to the inlet is of major importance regarding droplet coalescence and breakup processes in liquid-liquid separation processes. Also for the design of small-scale hydrocyclones with some centimeters in size analytical models were developed (Mitzmager and Mitzrahi, 1964;Dyakowski and Williams, 1993;Vallebuona et al, 1995;Tavares et al, 2002;Grommers et al, 2004). The restricted range of application of various calculation models was proved by Chen et al (2000Chen et al ( , 2004 in an experimental work.…”

Section: Review On Hydrocyclone Design and Simulationmentioning

confidence: 99%

Modeling fluid behavior and droplet interactions during liquid–liquid separation in hydrocyclones

Schütz

Gorbach

Piesche

2009

Chemical Engineering Science

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“…However, this larger capacity is insufficient to produce the necessary centrifugal force for separating finer particles. Thus, high-pressure hydrocyclones are usually operated with pressures ranging from 50 to 276 kPa to separate particles with densities greater than 2-g-cm -3 (Medronho and Thew, 1984;Antunes and Medronho, 1992;Coelho and Medronho, 1992;Nageswararao, 1992) and sizes smaller than 212 µm (Hou et al, 1998;Tavares et al, 2002). However, the LPH was designed to separate both larger (floatable fecal solids and feed waste) and finer solid particle sizes (suspended solids) (Lee, 2004).…”

Section: Discussionmentioning

confidence: 99%

Separation Performance of a Low-pressure Hydrocyclone for Suspended Solids in a Recirculating Aquaculture System

Lee¹

2010

Fisheries and aquatic sciences

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The separation performance of a low-pressure hydrocyclone (LPH) was evaluated for suspendedsolids removal in a recirculating aquaculture system (RAS). The dimensions of the LPH were 335 mm cylinder diameter, 575 mm cylinder height, 60 mm overflow diameter, 50 mm underflow diameter, and 68° cone angle. The inflow rate varied (400, 600, 800, and 1,000 mL s -1 ) with 25%, 25%, 20%, and 10% of bypass (R f ), respectively. The maximum total separation efficiency (Et) and reduced separation efficiency (E't) for suspended solids from the effluent of the second settlement tank (before biofiltration) were 58.9% and 45.2%, respectively, at an inflow rate of 600 mL s -1 and 25% of R f . The maximum Et and E't for suspended solids from the water supply channel (after biofiltration) were 24.4% and 16%, respectively, at an inflow rate of 1,000 mL s -1 and 10% of R f . The maximum grade efficiency (Ei) was 51.6% for a 300 µm particle size at an inflow rate of 600 mL s -1 with 23% of R f . The maximum reduced grade efficiency (E'i) was 37.6% for a 300 µm particle size at an inflow rate of 1,000 mL s -1 with 11% of R f . The results indicate that the separation performance of the LPH for suspended solids removal was size selective and that maximum removal occurred at particle sizes ranging from 300 to 500 µm.

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Modeling classification in small-diameter hydrocyclones under variable rheological conditions

Cited by 43 publications

References 12 publications

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

Modeling fluid behavior and droplet interactions during liquid–liquid separation in hydrocyclones

Separation Performance of a Low-pressure Hydrocyclone for Suspended Solids in a Recirculating Aquaculture System

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