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Type: Conference paper
Title: Selecting Frothers for the Flotation of Specific Ores by Means of Batch Scale Foaming Tests
Author: Zanin, M.
Grano, S.
Citation: Proceedings Metallurgical Plant Design and Operating Strategies 2006: pp. 339-349
Publisher: AusIMM
Publisher Place: CD Rom
Issue Date: 2006
ISBN: 1920806547
Conference Name: Metallurgical Plant Design and Operating Strategies Conference (5th : 2006 : Perth, Western Australia)
Organisation: Institute for Mineral and Energy Resources
Statement of
M Zanin and S R Grano
Abstract: The selection of the proper frother, specifically for a given ore, is essential in flotation. Traditionally, strong and stable froths are required in the scavengers, where metal recovery needs to be maximised, while selectivity must be achieved in the roughers and cleaners, where grade of concentrates is the main issue. The physical properties of a froth are determined both by frother type, by process water composition and by the amount and nature of the suspended particles. The evaluation of different frothers, in terms of metallurgical performance, is complicated at plant scale, since it may lead to periods of malfunctioning of the process and unacceptable decreases in recovery. On the other hand, evaluation based on frother chemistry only, is often unsatisfactory, because the frothing response is strongly ore dependent. A procedure, and proper tools, was developed at the Wark in order to perform the screening of candidate frothers at batch scale on real pulp samples. The main parameters related to froth stability (half-life time, froth height) are measured after introducing the pulp samples into a foaming column, where different conditions in terms of frother addition, agitation and aeration can be maintained. The approach has been applied to the selection of frothers for the flotation of an Australian sulfide ore. Procedure and results are discussed.
Rights: Copyright status unknown
RMID: 0020109414
Appears in Collections:Institute for Mineral and Energy Resources publications

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