Assigning physical significance to floatability components

Welsby, S. D. D., Vianna, S. M. S. M. and Franzidis, J.-P. (2010) Assigning physical significance to floatability components. International Journal of Mineral Processing, 97 1-4: 59-67. doi:10.1016/j.minpro.2010.08.002


Author Welsby, S. D. D.
Vianna, S. M. S. M.
Franzidis, J.-P.
Title Assigning physical significance to floatability components
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2010-11
Sub-type Article (original research)
DOI 10.1016/j.minpro.2010.08.002
Volume 97
Issue 1-4
Start page 59
End page 67
Total pages 9
Editor K. Heiskanen
D. R. Nagaraj
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2011
Language eng
Formatted abstract The floatability component method is a useful technique for modelling flotation. A floatability component is a mathematically grouped set of particles that display a similar flotation rate, but otherwise do not necessarily possess common physical characteristics. This means that it is currently not possible to determine floatability components from physical properties of the feed stream prior to flotation. The current study aimed to assign physical significance to floatability component model parameters to assist linking comminution, classification and flotation models.

Floatability component model parameters (flotation rates and corresponding mass fractions) for galena in the feed stream to a 40-L continuous flotation cell were determined concurrently with the measurement of a property-based size-by-liberation floatability distribution. Two floating and one non-floating components were derived and visually compared to the floatability distribution. It was found that the derived components provided an adequate approximation of the shape of the distribution. From this comparison, size-by-liberation particle classes were designated fast, slow or non-floating, thus determining the physical attributes of particles within the floatability components.

These results show that the components derived using the floatability component method possessed physical significance, and that a continuous spectrum of rates could be usefully simplified to a number of discrete components. Using this technique it would be possible to re-assign floatability components following a change to feed stream properties (such as grade, particle size and composition), instead of re-deriving them. A simple approach for validating the technique is put forward.
© 2010 Elsevier B.V. All rights reserved.
Keyword Floatability component
Size
Composition
Liberation
Flotation
Modelling
Air-flow rate
Flotation machines
Froth recovery
Particle-size
Adsorption
Variables
Surfaces
Zone
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2011 Collection
 
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Created: Sun, 19 Dec 2010, 00:12:32 EST