Extraction metallurgy (3rd edition)

Extraction metallurgy (3rd edition)

Minerals Engineering, Vol. 3, No. 3•4, pp. 381-384, 1990 Printed in Great Britain 0892-6875/90 $3.00 + 0.00 Pergamon Press pie BOOK REVIEWS Extracti...

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Minerals Engineering, Vol. 3, No. 3•4, pp. 381-384, 1990 Printed in Great Britain

0892-6875/90 $3.00 + 0.00 Pergamon Press pie

BOOK REVIEWS Extraction Metallurgy (3rd Edition) J.D. Gilchrist Pergamon Press, Oxford, U K , 1989. Price $27 (Flexicover). $90 (Hardcover) 431 pps. ISBN 0-08-036612-0 (Hardcover); ISBN 0-08-036611-2 (Flexicover) This is the 3rd edition of the text first published by J.D. Gilchrist in 1967. The two earlier texts have already proved to be useful student text books for those studying degrees and diplomas in mineral processing and extractive metallurgy. The text is well written in a narrative form and will continue to provide the initial reading for the undergraduate and those in industry who need to find out more about the extraction of metals from mineral deposits. The principles on which metallurgical processes are based are introduced in an interesting way and readers will find the appendices as useful additions. Although the book starts with a chapter on ores, insufficient stress is laid upon the importance of the mineralogy of an ore in terms of its processing and extractive metallurgy. An introduction to ore dressing processes takes up 63 pages of text, when it might have been better to refer the reader to the excellent sister texts on Mineral Processing Technology by B.A. Wills, where now the 4th edition is available, but the bibliography has not gone beyond the 3rd edition, published in 1985. The text is entitled "Extraction Metallurgy" but it tends to concentrate on the pyrometallurgical process routes for metals. In the 1980's significant quantities of Western world metal production is via hydrometallurgy and perhaps the coverage here is limited. The 63 pages used for ore dressing could well have been used to expand the coverage of the industrially important processes in hydrometallurgy. For example the pyrometallurgical routes for treatment of nickel sulphides are covered in some depth whereas the hydrometallurgy of the now important laterite sources and the Sherritt Gordon process are rather limited. The chapter on instrumentation and control unfortunately does not address the application of PLC and central control which is now becoming very important on large hydrometallurgical plants, such as that at Rossing Uranium in Namibia. More detail on the unit processes of leaching and solution purification such as the recent use of continuous ion exchange for uranium and carbon processes for gold would have been useful to the reader. The extraction procedures for gold do not cover the new technology involved in CIP and CIL, heap leaching and resin processes, where the main interest metal to the mineral industry world wide seems to be the gold in lower and lower grade and complex mineral deposits. With the increasing interest in the extension of reserves and energy saving some space on recovery and recycling of metals would have been appreciated. Nevertheless the text is easy to read and it is pleasing to see that the units have been converted to SI.

Gilchrist's 3rd edition of Extraction Metallurgy will prove to be a valuable first text to undergraduates and people in industry who want some process background, so it should be on many shelves in the future. C.V. Phillips 381

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Book Reviews

W-TI-RE-Sb '88 Proceedings of the First International Conference on the Metallurgy and Materials Science of Tungsten, Titanium, Rare Earths and Antimony Chongyue, F. (ed.) Pergamon Press, Oxford, UK, 1989. Price $276. 1353 pps (2 vols.) ISBN 0-08-037202-3 (2 volume set) Given the major impact that China has on the production and price of these relatively low tonnage commodities the two volumes of this conference proceedings offer a timely overview. The majority of the papers are by Chinese authors and deal with research topics. The two volumes are divided between extractive metallurgy and materials science. This review will consider only the first, slightly smaller, volume dealing with extractive metallurgy, although the second volume does contain a delayed paper on ilmenite flotation. The keynote lectures on both subject areas are at the beginning of the first volume. Three of these are of potential interest to the minerals engineer; a review of the geological nature of ore deposits covering all of the conference metals, a paper on antimony production and one dealing with tungsten technology. The latter two deal with both mineral processing and extractive metallurgical aspects. The section on tungsten contains 27 papers, eight dealing with mineral processing (covering flotation, oil agglomeration, gravity and magnetic separation), the remainder dealing principally with hydrometallurgical extraction and the production of a variety of tungsten compounds. Twenty papers deal with titanium, almost all being concerned with research aspects of extraction, though some consider such far removed subjects as its use in plant conditioning and as a fodder additive. The largest section, with over thirty papers, is concerned with rare earths. Flotation separation problems are addressed in a number of papers. Aspects of the hydrometallurgical and pyrometallurgical processing are well covered. A number of papers discuss the development of analytical techniques. The final section on antimony (15 papers) focuses strongly on the metallurgy of the metal. The papers deal with aspects of thermodynamics, roasting, chloride metallurgy. Three papers deal with mineral processing applications; one on heavy-media separation at a Chinese mining operation and two with flotation separations. Most of the papers are relatively short, but are usually well referenced. This proceedings should provide a useful source of Chinese research findings, the alternative being long awaited inter-library loan requests, which upon arrival turn out to be in Chinese! S.T. Hall

Today's Technology for the Mining and Metallurgical Industries Papers presented at the MMIJ/IMM joint symposium, Kyoto, 2-4 October 1989 Institution of Mining and Metallurgy, London, UK, 1989. Price £60 ($US135) 623 pps. ISBN 1 870706 13 7 The Joint Symposium of the Mining and Materials Processing Institute of Japan and the Institution of Mining and Metallurgy was held in Kyoto, Japan in October 1989. The symposium volume contains 67 papers, covering a very wide range of activities: Hydrometallurgy (12 papers) Mineral economics (3)