Refractory Gold Ores. Visit to the Barberton Mines, 15th to 18th February, 1966 PDF Download
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Languages : en
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The visit was undertaken to discuss proposals for future work on this project with members of the Barberton Mining Association. In addition, data were sought to bring the records of the Government Metallurgical Laboratory (GML) up to date, and samples were taken. The following conclusions, given in order of priority, were drawn from discussions with the above Association. (1) Assistance can best be given to the mines by investigating the operation of the Edwards roasters. (2) Although the mines are investigating the flotation operation themselves, mineralogical examination of the flotation tailings, to determine the distribution of the gold, is desired. (3) Pre-cyanidation of the flotation concentrate is to be investigated. (4) The recovery of arsenic and gold from the flue gases and dusts is to be investigated. (5) The possibility of manufacturing sulphuric acid is to be assessed. (6) Short-term testwork on the various problems raised (mainly by Mr Proudfoot and Mr Harris) will be undertaken.
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Languages : en
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Book Description
The visit was undertaken to discuss proposals for future work on this project with members of the Barberton Mining Association. In addition, data were sought to bring the records of the Government Metallurgical Laboratory (GML) up to date, and samples were taken. The following conclusions, given in order of priority, were drawn from discussions with the above Association. (1) Assistance can best be given to the mines by investigating the operation of the Edwards roasters. (2) Although the mines are investigating the flotation operation themselves, mineralogical examination of the flotation tailings, to determine the distribution of the gold, is desired. (3) Pre-cyanidation of the flotation concentrate is to be investigated. (4) The recovery of arsenic and gold from the flue gases and dusts is to be investigated. (5) The possibility of manufacturing sulphuric acid is to be assessed. (6) Short-term testwork on the various problems raised (mainly by Mr Proudfoot and Mr Harris) will be undertaken.
Author: Rodney Moffett
Publisher: UJ Press
ISBN: 1776434137
Category : Nature
Languages : en
Pages : 334
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Book Description
This Scientific Bibliography of the “Far Northern Drakensberg” is a continuation by the Afromontane Research Unit of the University of the Free State (ARU) to document published and other similar works on the mountains of the summer rainfall area of South Africa. It follows “A Scientific Bibliography of the Drakensberg, Maloti and Adjacent Lowlands” which was published in 2020 (Moffett 2020), and which covered the area between the North-Eastern Cape and the North-Eastern Free State. The current work extends this northward by including articles and publications dating back to 1875 (E.Cohen, on the Lydenburg goldfields) reaching as far as the Wolkberg and Woodbush near Tzaneen in Limpopo Province. Figure 1 shows the boundary of the area covered, and although referred to as the Far Northern Drakensberg in this work, it is identical to that described as the LMEE, Limpopo, Mpumalanga & Eswatini Escarpment by Clarke et al (2022). Although slightly separate from the “lower” escarpment, the mountainous Barberton and adjacent Eswatini area, as well as the Leolo Mountains in eastern Sekhukhuneland are also included. Details on how the boundary in figure 1 was determined are given in Clark et al (2022). Bibliographies on two further ranges in the summer rainfall area, viz. the Magaliesberg in Gauteng province and the Soutpansberg in Limpopo province are to be the subject of future compilations.
Author: W. Petruk
Publisher: Elsevier
ISBN: 0080527337
Category : Technology & Engineering
Languages : en
Pages : 287
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Book Description
Techniques of performing applied mineralogy investigations, and applications and capabilities of recently developed instruments for measuring mineral properties are explored in this book intended for practicing applied mineralogists, students in mineralogy and metallurgy, and mineral processing engineers. The benefits of applied mineralogy are presented by using in-depth applied mineralogy studies on base metal ores, gold ores, porphyry copper ores, iron ores and industrial minerals as examples. The chapter on base metal ores includes a discussion on the effects of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So4- on the recoveries of sphalerite, galena and chalcopyrite. The chapter on gold discusses various methods of determining the quantities of gold in different minerals, including 'invisible' gold in pyrite and arsenopyrite, so that a balance of the distribution of gold among the minerals can be calculated. This book also discusses the roles of pyrite, oxygen, moisture and bacterial (thiobacillus ferrooxidans) on reactions that produce acidic drainage from tailings piles, and summarizes currently used and proposed methods of remediation of acidic drainage.
Author: John J. Stephens
Publisher: John Wiley & Sons
ISBN:
Category : Business & Economics
Languages : en
Pages : 360
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Book Description
What makes a country go to war? At what stage in that sequence of events, of action and reaction, bluff and brinkmanship does war become unavoidable? The South African War was the first large-scale human tragedy of the twentieth century - the prelude to a century that was to be characterised by such large-scale and avoidable tragedy. The cost in human, environmental and financial terms was colossal. Approximately 60,000 men women and children were killed from countries that not only included Britain and South Africa, but also France, the USA, Australia, New Zealand and Canada. Moreover, the peace terms that allowed for the continuation of discriminatory racial policies set the stage for a century of racial inequality and strife in South Africa. In this incisive work, South African author, John Stephens, considers the slide to a war that nobody wanted. This is a story of the shaping of South Africa. It is also a universal story: one of pride, greed and fear - of humans behaving in a very human way.
Author: Thomas Schlüter
Publisher: Springer Science & Business Media
ISBN: 3540763732
Category : Science
Languages : en
Pages : 311
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Book Description
T is atlas is intended primarily for anybody who is in-some background for the arrangement of how the terested in basic geology of Africa. Its originality lies atlas was done. T e second chapter is devoted to the in the fact that the regional geology of each African history of geological mapping in Africa, necessary nation or territory is reviewed country-wise by maps for a fuller appreciation of why this work in Africa is and text, a view normally not presented in textbooks worth doing. Chapter 3 provides an executive s- of regional geology. It is my belief, that there has long mary on the stratigraphy and tectonics of Africa as a been a need in universities and geological surveys, whole, i. e. in the context of no political boundaries. both in Africa and in the developed world, for sum- T e main part of the atlas lies in Chapter 4, where in marizing geological maps and an accompanying basic alphabetical order each African country or territory text utilising the enormous fund of knowledge that is presented by a digitized geological overview map has been accumulated since the beginning of geologi- and an accompanying text on its respective strat- th cal research in Africa in the mid-19 century. I hope raphy, tectonics, economic geology, geohazards and that, in part, the present atlas may satisfy this need. geosites. A short list of relevant references is also a- ed.
Author: Douglas E. Rawlings
Publisher: Springer Science & Business Media
ISBN: 3662061112
Category : Science
Languages : en
Pages : 302
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Book Description
Biomining is the use of microorganisms in the recovery of metals from ores. During bioleaching, metals such as copper, nickel or zinc are oxidized through microbial action from the water-insoluble sulfide to the soluble sulfate forms. Although gold is inert to microbial action, microbes can also be used in gold recovery from certain types of ores because as they oxidize the ore, they open up its structure, thereby allowing a gold-solubilizing agent such as cyanide to penetrate the ore. The book describes several industrial bioleaching and biooxidation processes as well as the underlying theory and biology of the microbes involved.
Author: Gunter Faure
Publisher: Springer Science & Business Media
ISBN: 1402055447
Category : Science
Languages : en
Pages : 532
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Book Description
This textbook details basic principles of planetary science that help to unify the study of the solar system. It is organized in a hierarchical manner so that every chapter builds upon preceding ones. Starting with historical perspectives on space exploration and the development of the scientific method, the book leads the reader through the solar system. Coverage explains that the origin and subsequent evolution of planets and their satellites can be explained by applications of certain basic principles of physics, chemistry, and celestial mechanics and that surface features of the solid bodies can be interpreted by principles of geology.
Author: Kevin Hefferan
Publisher: John Wiley & Sons
ISBN: 1444391216
Category : Science
Languages : en
Pages : 935
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Book Description
Minerals and rocks form the foundation of geologic studies. This new textbook has been written to address the needs of students at the increasing number of universities that have compressed separate mineralogy and petrology courses into a one- or two-semester Earth materials course. Key features of this book include: equal coverage of mineralogy, sedimentary petrology, igneous petrology and metamorphic petrology; copious field examples and regional relationships with graphics that illustrate the concepts discussed; numerous case studies to show the uses of earth materials as resources and their fundamental role in our lives and the global economy, and their relation to natural and human-induced hazards; the integration of earth materials into a cohesive process-based earth systems framework; two color thoughout with 48 pages of four color. Readership: students taking an earth materials, or combined mineralogy and petrology course in an earth science degree program. It will also be useful for environmental scientists, engineering geologists, and physical geographers who need to learn about minerals, rocks, soil and water in a comprehensive framework. A companion website for this book is available at: www.wiley.com/go/hefferan/earthmaterials.
Author: Charles Moon
Publisher: Wiley-Blackwell
ISBN: 9781405113175
Category : Science
Languages : en
Pages : 496
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Book Description
This new, up dated edition of Introduction to Mineral Exploration provides a comprehensive overview of all aspects of mineral exploration. Covers not only the nature of mineral exploration but also considers other factors essential to successful exploration, from target evaluation to feasibility studies for extraction and production. Includes six detailed case studies, selected for the range of different problems and considerations they present to the mineral explorationist. Features new chapters on handling mineral exploration data and a new case study on the exploration for diamonds. Essential reading for upper level undergraduates studying ore geology, mineral exploration, mining geology, coal exploration, and industrial minerals, as well as professional geologists. Artwork from the book is available to instructors online at www.blackwellpublishing.com/moon.
Author: C. R. Anhaeusser
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1072
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