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Flotation: Theory, Reagents and Ore Testing.

Flotation: Theory, Regeants and Ore Testing. By Ronald D. Crozier. Published by Pergamon Press. 395 Saw Mill River Road, Elmsford, New York 10523, U.S. and Headington Hill Hall, Oxford, OX3 OBW, U.K. 1992. Hardback, 235mm x 151mm, xviii + 343pp, tabs, figs. Price |pounds~65.00. ISBN 0 08 041864 3.

The author is a well-known international expert on the chemistry of flotation who has presented seminars on the subject. This text, he says, is primarily addressed to mill metallurgists rather than to flotation researchers: most of the published fundamental research, he comments, has been of relatively little value in resolving practical problems. He highlights in particular the scale-up from testwork when designing flotation circuits for a new project. Much effort has gone into geologic modelling to help establish ore reserves, but the accurate determination of expected recoveries, which have a key bearing on revenues received, is equally important.

This book is packed with a great deal of clearly-presented practical knowledge. The author provides an authoritative review of sulphide mineral collector properties and use with specific ores. Special emphasis is placed on the different flotation mechanisms involved in particle capture of both sulphide and non-sulphide minerals on reagent selection. The author provides details, some previously unpublished, of the chemical properties of reagents and of the manufacture and possible surface-active impurities of commercial collectors and frothers.

Chapters cover flotation fundamentals; the mechanism of flotation; sulphide mineral flotation; thiol collector chemistry; commercial sulphhydryl collectors; properties of flotation froths; chemical properties of frothers; flotation modifiers; depression and activation of sulphides; mill test case histories; sulphide mill practice; non-metallic mineral flotation; and flotation testing. In the last of these, ore sampling, sample preparation, testing machines and routines are covered as practical guides to mine laboratory staff. Suggestions as to testing procedures, equipment selection and graphical data evaluation methods to multivariate problems are provided.

The line diagrams are generally quite clear, although in places it is a little too obvious that they were computer-generated.

The book is certain to be of interest to practising flotation mill metallurgists, technicians and professional engineers working in mineral processing.

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Publication:Mining Magazine
Article Type:Book Review
Date:Apr 1, 1992
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