Discharge characteristics of a hydrocyclone with built-in injector

Minkov, L.; Krokhina, A. V.; Dueck, I. G.

doi:10.1134/s086986431103005x

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…The modeling of hydro dynamics is detailed in [26,27]. Here, we represent the results of calculating the concentration distribu tion of monodisperse particles using the model of interpenetrating continua and the Euler description of the interaction of phases in the two dimensional axi ally symmetric approximation [28].…”

Section: Resultsmentioning

confidence: 99%

Controlling characteristics of hydrocyclone via additional water injection

Dueck

Krokhina

Minkov

2012

Theor Found Chem Eng

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The results of measuring the parameters of the classification of suspended solid particles by their sizes in a hydrocyclone equipped with a system for additional water injection are considered. The additional injection of water considerably changes the characteristics of the hydrocyclone. A mathematical model that predicts the trend in the change of hydrocyclone characteristics upon the injection of water is described. The mechanisms of the action of radial and tangential injection on classification have been explained. An efficient regime of injection is recommended to attain the required classification characteristics.

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Section: Resultsmentioning

confidence: 99%

Controlling characteristics of hydrocyclone via additional water injection

Dueck

Krokhina

Minkov

2012

Theor Found Chem Eng

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“…At the area near the underflow, this phenomenon is more evident due to a high concentration of solid particle aggregation. Hence, more and more researches have focused on the problem and put emphasis on how to reduce fine particles in the underflow (Dueck et al 2010, Hwang and Chou 2017, Ghodrat et al 2014, Minkov et al 2011.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Removal From Dredging Slurry Using a Parabolic Hydrocyclone

Yang

Liu

Zhang

et al. 2019

Rev. Int. Contam. Ambie.

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Heavy metals usually aggregate as fine particles in dredging slurry and need to be removed or reduced before recycling of the slurry. However, traditional hydrocyclone method often leads to low separation efficiency because of the difficulties in the complete separation of fine particles. To address this problem, this paper proposes a new type of parabolic hydrocyclone for the removal of heavy metals from dredging slurry. The computational fluid dynamics (CFD) software together with mixture and Reynolds stress model (RSM) have been used to simulate the internal flow field of the parabolic hydrocyclone, which was then verified with experimental tests. The simulation results show that, compared with traditional hydrocyclones, the flow field inside the parabolic hydrocyclone is more stable, which effectively help to avoid the mixture of coarse and fine particles caused by the flow field disturbance. Further experimental results demonstrate that the cumulative percentage of fine particles in the underflow product decreases. The cut size increases from 30 μm to 49 μm and the steepness index rises from 0.13 to 0.2, which proves that the separation accuracy can be improved, and the fine particles mixed in the underflow can be removed effectively. Moreover, the recovery rate of heavy metalas Zn and Cr in the overflow products reaches 97.21 % and 78.27 %, respectively, verifying the enrichment effect. Therefore, after the parabolic hydrocyclone separation process, the underflow products contain less heavy metals and become both non-hazardous and recyclable. Palabras clave: metales pesados, hidrociclón parabólico, CFD, eficiencia de separación, tamaño de corte RESUMEN Los metales pesados usualmente se agrupan como partículas finas en los lodos dragados y necesitan ser removidas o reducidas antes de reciclar el lodo. Sin embargo, el método tradicional del hidrociclón con frecuencia lleva una eficiencia de separación baja debido a las dificultades para lograr la separación de las partículas finas. Para resolver este problema, este artículo propone un nuevo tipo de hidrociclón parabólico para remover metales pesados durante el dragado de los lodos finos. Para simular el campo del flujo interno del hidrociclón parabólico, que después fue verificado con pruebas experimentales, se utilizaron la dinámica de fluídos computacional (CFD, por sus siglas en inglés) junto con el modelo de mezcla y el modelo de estrés de Reynolds (RSM). Los resultados

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Discharge characteristics of a hydrocyclone with built-in injector

Cited by 2 publications

References 24 publications

Controlling characteristics of hydrocyclone via additional water injection

Controlling characteristics of hydrocyclone via additional water injection

Heavy Metal Removal From Dredging Slurry Using a Parabolic Hydrocyclone

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