Air-core modelling for hydrocyclones operating with solids

Narasimha, M., Mainza, A. N., Holtham, P. N. and Brennan, M. S. (2012) Air-core modelling for hydrocyclones operating with solids. International Journal of Mineral Processing, 102-103 : 19-24.


Author Narasimha, M.
Mainza, A. N.
Holtham, P. N.
Brennan, M. S.
Title Air-core modelling for hydrocyclones operating with solids
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2012-01-25
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.minpro.2011.09.004
Volume 102-103
Start page 19
End page 24
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Abstract The air core is one of the most important internal structures in the flow field of hydrocyclones. One difficulty in predicting the flow split in cyclones is the inability to specify the form and location of the air-core surface. In the usual cyclone models the interface that bounds the air-core is described by a fixed cylindrical surface, which greatly simplifies the problem. Most of the available air core models suit only hydrocyclones operating with water or very dilute slurries. An attempt has been made in this study to develop a semi-empirical model, capable of predicting the air core diameter correctly for hydrocyclones under different operating conditions. The model considers the effect of axial length, underflow and overflow dimensions, feed solids concentration and other significant operating conditions on predict air core size. The predictions are compared with data sets available in the literature. It was observed that the air core diameter reduces with increase in the feed solids concentration and with decrease in height from the roof of the cyclone towards the apex zone.
Keyword Hydrocyclone
Air-core
Mathematical modelling
Dilute/dense slurries
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 17 September 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2012 Collection
 
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