Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/935107

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Title
Development of a froth dropback measurement device
Author/Creator
Rahman, R.;  Ata, S.;  Jameson, G.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
This paper presents the development of a new device which can collect the detached particles from the froth phase directly as they fall out of the froth. The device consists of two concentric tubes separated by 10 mm gap and attached to a fl otation column. The bubbles are loaded in the column and rise through the gap between two tubes where a stable froth is formed. The particles that detach from the froth phase are collected in the inner tube, known as dropback chamber. Both dropback and concentrate particles are collected, weighed and froth recovery is measured as fraction of particles entering froth phase attached to air bubbles transferred as concentrate. Experiments have been performed using mixture of fi ne (60 G, d90 = 110 μm) and coarse (50 N, d90 = 370 μm) silica. The infl uence of froth depth and the gap between the pulp froth interface and dropback catcher on froth recovery has been investigated. Experiments have also been carried out varying the percentage of coarse particles in the feed. Results have shown that the presence of coarse particles has a detrimental effect on the froth recovery as well as on the froth stability.
Relation
XXV International Mineral Processing Congress (IMPC 2010): "Smarter Processing for the Future". XXV International Mineral Processing Congress (IMPC 2010): "Smarter processing for the future": Congress Proceedings (Brisbane, Qld 6-10 September, 2010) p. 2279-2288
Relation
http://www.impc2010.org
Date
2010
Publisher
Australasian Institute of Mining and Metallurgy
Keyword(s)
flotation;  froth;  particle detachment;  dropback;  froth recovery
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/935107
Identifier
ISBN:9781921522284
Reviewed
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Subject
"Development of a froth dropback measurement device"
 
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