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Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range

Kroll-Rabotin, Jean-Sébastien and Bourgeois, Florent and Climent, Eric Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range. (2012) Separation and Purification Technology, vol. 92 . pp. 129-135. ISSN 1383-5866

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Official URL: http://dx.doi.org/10.1016/j.seppur.2011.10.029

Abstract

The process of separating ultrafine particles, say below 80 μm, on the basis of density is a true technical challenge. Indeed, the separation process itself becomes very much size dependent with such fine particles, so that large enough density differentials are necessary for offsetting the strong particle size effect. Our study is concerned with understanding the limitations of the UF Falcon concentrator, an enhanced gravity separator specifically designed for treating slurries with ultrafines. To this end, based on a number of hypotheses, we have already derived and published a theoretical model of the UF Falcon concentrator for treating dilute suspensions. This paper presents the validation and calibration of this model, based on experimental measurements carried out under controlled conditions using a laboratory scale concentrator. By comparing measured and predicted separation results for particles with known size distribution and density, the work validates the key model hypotheses, thereby confirming our understanding of the physics of the separation process. Moreover, by changing operating conditions in a systematic manner, the work is able to calibrate the model so that it can be used to make quantitative prediction of the UF Falcons performance.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Separation and Purification Technology website: http://www.sciencedirect.com/science/article/pii/S1383586611006307
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Florent BOURGEOIS

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