Download or read book Electronic Structure and Surfaces of Sulfide Minerals written by Jianhua Chen and published by Elsevier. This book was released on 2020-04-23 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic Structure and Surfaces of Sulfide Minerals: Density Functional Theory and Applications examines the mineral structure and electronic properties of minerals and their relationship to mineral floatability by density functional theory (DFT). This pragmatic guide explores the role of minerals in flotation by focusing on the mineral surface structure, electronic properties, and the adsorption of flotation agents through the study of the microscopic mechanism of reagents from the structure and properties of minerals. The flotation mechanism is explained from the point-of-view of solid physics, which is of great significance for both theoretical research and practical applications. The study of the structure and properties of the minerals can reveal the essential nature of mineral flotation, hence why minerals have floatability, the mechanism of response of different minerals to different chemicals, and the origin of the selectivity of flotation agents. Discusses the relationship between mineral properties and floatability in terms of crystal structure, atomic coordination structure and electronic properties Covers the influence of the surface structure of the mineral on surface charge distribution, reactivity and electron density, including a quantitative calculation method for the atomic reactivity of the mineral surface Includes research on the microstructure and mechanism of reagent molecules adsorption on the surface of minerals, focusing on the interactions between water molecules, oxygen molecules and reagents

Download or read book Sulfide Mineralogy and Geochemistry written by David J. Vaughan and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 61 of Reviews in Mineralogy and Geochemistry presents an up-to-date review of sulfide mineralogy and geochemistry. The crystal structures, electrical and magnetic properties, spectroscopic studies, chemical bonding, thermochemistry, phase relations, solution chemistry, surface structure and chemistry, hydrothermal precipitation processes, sulfur isotope geochemistry and geobiology of metal sulfides are reviewed. Where it is appropriate for comparison, there is brief discussion of the selenide or telluride analogs of the metal sulfides. When discussing crystal structures and structural relationships, the sulfosalt minerals as well as the sulfides are considered in some detail.

Download or read book Microscopic Properties and Processes in Minerals written by Kate Wright and published by Springer Science & Business Media. This book was released on 1999-10-31 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major developments in Earth Sciences in general, and mineralogy in particular, has been the growth of our understanding of the microscopic behaviour of the complex materials that make up the Earth. This has been made possible by advances in our ability to probe minerals at the atomic level, over a large range of pressure and temperature conditions. New experimental techniques include the use of scanning probe microscopies to investigate mineral surfaces, as well as the use of neutron scattering, nuclear spectroscopies and synchrotron radiation to investigate the bonding and structure of minerals. In addition, there have been major developments in computational methods so that it is now possible to calculate the electronic structure of many rock forming materials. The aim of this volume is to give a coherent survey of the latest developments in experimental and theoretical approaches to the study of microscopic propertie~ and processes in minerals. Chapters in the book cover a number of key themes in the mineral sciences such as the behaviour of minerals at extremes of pressure and temperature, ordering in complex silicates, mechanisms of water incorporation in mantle phases, the importance of reactions occurring at the mineral surface, and the ability of computational methods to provide useful, qualitative information on the bulk and surface properties of minerals. The background to several experimental techniques is covered in some detail with examples of relevance to the issues cited above.

Download or read book Sulfide Mineralogy written by Paul H. Ribbe and published by . This book was released on 1974 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock forming Minerals written by J. F. W. Bowles and published by Geological Society of London. This book was released on 1978 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 5A of this second edition of Rock-Forming Minerals focuses on oxides, hydroxides and sulphides. Since the publication of the first edition, in 1962, there has been an enormous increase in the literature devoted to these minerals. This new edition, greatly expanded and rewritten, covers aspects that include crystal structures, chemical compositions, electronic structures, phase relations, thermochemistry, mineral surface structure and reactivity, physical properties, distinguishing features and parageneses (including stable isotope data).

Download or read book Electrochemistry in Mineral and Metal Processing V written by R. Woods and published by The Electrochemical Society. This book was released on 2000 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluid Inclusion Effect in Flotation of Sulfide Minerals written by Shuming Wen and published by Elsevier. This book was released on 2019-11-22 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid Inclusion Effect in the Flotation of Sulfide Minerals gives a detailed introduction to how fluid inclusions affect the flotation of sulfide minerals. The book introduces the various fluids found in geology, detailing the properties of fluid inclusions and how to identify and analyze their composition. It gives the common chemical compositions of fluid inclusions, investigates the release of fluid inclusions in sulfide materials and some gangues, and presents the concentrations and solution chemistry of the released ions. Finally, the book considers the absorption mechanism and the interaction of some typical metal ions from fluid inclusions on the surface of sulfide minerals. Analyzes the properties of a surface when in contact with a fluid inclusion and how the fluid released affects mineral processing and extraction Determines the heavy metals released from fluid inclusions Offers a comprehensive picture on how fluid inclusions affect flotation from both macro and microscopic viewpoints Presents the absorption mechanism and interactions of some typical metal ions from fluid inclusions on the surface of sulfide minerals

Download or read book Oxidation of Sulfide Minerals in Benefication Processes written by A Abramov and published by CRC Press. This book was released on 1998-01-23 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of recent experimental studies and modern theoretical concepts are combined in this volume to provide a comprehensive analysis of sulfide mineral oxidation processes. Introductory chapters discuss the properties of sulfide minerals and various investigative techniques, followed by chapters on oxidation mechanisms and the behavior of minerals under these various oxidizing conditions. This book also demonstrates modern methods of physical-chemical modelling and the regulation and optimization of flotation processes.

Download or read book Electrochemistry of Flotation of Sulphide Minerals written by Yuehua Hu and published by Springer Science & Business Media. This book was released on 2010-06-30 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as well as molecular orbital theory. Behaviour and mechanism of collectorless and collector-induced flotation of sulphide minerals in various flotation systems are also discussed. The example of electrochemical flotation separation of sulphide ores shows an industrial application. Prof. Yuehua Hu is a professor at the School of Minerals Processing & Bioengineering of Central South University and Vice Chairman of the Mineral Processing Committee of the China Nonferrous Metals Society. Dr. Wei Sun is an associate professor at the School of Minerals Processing & Bioengineering of Central South University. Prof. Dianzuo Wang is both a member of Chinese Academy of Sciences and Chinese Academy of Engineering, and a foreign associate of the National Academy of Engineering (USA).

Download or read book Coordination Principle of Minerals Flotation written by Jianhua Chen and published by Springer Nature. This book was released on 2022-11-15 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of flotation, with selective interaction of reagents with minerals at its core, has greatly advanced the development of modern mining. Ever since, there has been continuous researched into the mechanism of mineral-reagent interactions, in an effort to design and develop more effective reagents. A unique perspective from coordination is presented to illustrate the principles of reagent molecules interacting with metal ions on mineral surface. For the first time, the influence is unveiled of mineral crystal structures and surrounding atoms on metal ion properties and further on mineral-reagent interactions. The introduction of classical theories for modern chemistry, including orbital structure, electron spin and orbital symmetry matching, into flotation is realized. Researchers, engineers and graduate students among others in the field of mineral processing may gain new insight into flotation and the development of novel reagents.

Download or read book Molecular Modeling Theory written by Randall T. Cygan and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 42 of Reviews in Mineralogy and Geochemistry covers the Applications in the Geosciences via Molecular Modeling Theory. We hope the content of this review volume will help the interested reader to quickly develop an appreciation for the fundamental theories behind the molecular modeling tools and to become aware of the limits in applying these state-of-the-art methods to solve geosciences problems. The review chapters in this volume were the basis for a short course on molecular modeling theory jointly sponsored by the Geochemical Society (GS) and the Mineralogical Society of America (MSA) May 18-20, 2001 in Roanoke, Virginia which was held prior to the 2001 Goldschmidt Conference in nearby Hot Springs, Virginia.

Download or read book Surface Chemistry of Froth Flotation written by S. Ramachandra Rao and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: th The technology of froth flotation, invented in the early 20 century was first used for the concentration of sulfide minerals. Since then it has been applied for the processing of many nonsulfide ores as weIl, including oxides, carbonates, silicates, soluble minerals like halite and sylvite and energy minerals like coal and bitumen. In recent years it has been used for several nonrnineral applications, such as waste water treatment, deinking of paper for recycling and resource recovery from industrial wastes he technology continues to grow with new applications reported every year. Flotation is based on chemical phenomena occurring at the interfaces, solid/water and air/water. Surface Chemistry principles have played a significant role in the development of flotation technology. Knowledge of aqueous solution chemistry and electrochemistry has added to our understanding of the reactions in flotation systems. Professor Jan Leja's book has weIl served researchers and students as they tried to understand the chemistry of flotation, and it is a significant contribution to the advancement of knowledge. However, since the book was first published, new research techniques and ever growing information have made an update necessary. The revised edition compiled by Dr. S. R. Rao has brought together fundamental aspects of the chemistry of flotation and how they apply to practical systems. It should serve all who are working in the area of flotation and interested in exploring new applications of flotation technology.

Download or read book Chemical Modelling written by Michael Springborg and published by Royal Society of Chemistry. This book was released on 2018-02-21 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical modelling covers a wide range of hot topics and active areas in computational chemistry and related fields. With the increase in volume, velocity and variety of information, researchers can find it difficult to keep up to date with the literature in these areas. Containing both comprehensive and critical reviews, this book is the first stop for any materials scientist, biochemist, chemist or molecular physicist wishing to acquaint themselves with major developments in the applications and theory of chemical modelling.

Download or read book Electronic Characterisation of Earth Abundant Sulphides for Solar Photovoltaics written by Thomas James Whittles and published by Springer. This book was released on 2018-07-31 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the electronic structure of earth-abundant and environmentally friendly materials for use as absorber layers within photovoltaic cells. The corroboration between high-quality photoemission measurements and density of states calculations yields valuable insights into why these materials have demonstrated poor device efficiencies in the vast literature cited. The book shows how the materials’ underlying electronic structures affect their properties, and how the band positions make them unsuitable for use with established solar cell technologies. After explaining these poor efficiencies, the book offers alternative window layer materials to improve the use of these absorbers. The power of photoemission and interpretation of the data in terms of factors generally overlooked in the literature, such as the materials’ oxidation and phase impurity, is demonstrated. Representing a unique reference guide, the book will be of considerable interest and value to members of the photoemission community engaged in solar cell research, and to a wider materials science audience as well.

Download or read book Mineral Water Interface Geochemistry written by Michael F. Hochella and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 23 of Reviews in Mineralogy and accompanying MSA short course covers chemical reactions that take place at mineral-water interfaces. We believe that this book describes most of the important concepts and contributions that have driven mineral-water interface geochemistry to its present state. We begin in Chapter 1 with examples of the global importance of mineral-water interface reactions and a brief review of the contents of the entire book. Thereafter, we have divided the book into four sections, including atomistic approaches (Chapters 2- 3), adsorption (Chapters 4-8), precipitation and dissolution (Chapters 9-11), and oxidation-reduction reactions (Chapters 11-14).

Download or read book Hydrometallurgical Process Fundamentals written by Renato G. Bautista and published by Springer. This book was released on 2013-12-19 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mineral resources of the industrialized countries, especially the member nations of the North Atlantic Treaty Organiza tion, are being depleted at such a rate that more and more of these count ries are beginning to depend on ore imported from other coun tries. To sustain the economic and strategie well-being of these member countries, it becomes imperative that a program of developing and exploiting other non-conventional mineral resources and a con servation program where metal values from waste dumps and scrap metals and alloys are recycled must be initiated and implemented. In order to meet this challenge, new processes and technology must be available for consideration in the design and operation of the new plants. One of the possible routes of extracting the metals from their ores, especially for multimetal complex ores and very low grade ores, is by hydrometallurgical processing. The hydrometallurgical route of metal recovery where dissolution (leaching), separation and concentration (ion exchange, solvent extraction, and membrane separation) and reduction to metal (cementation, precipitation by gaseous reduction, and electrolysis) is carried out at near ambient temperature is becoming more competi tive with the conventional high temperature processes used in the smelting of metals from high grade and beneficiated ores.

Download or read book Bioelectrosynthesis written by Falk Harnisch and published by Springer. This book was released on 2019-01-04 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses both the latest experimental research in bioelectrosynthesis and current applications. Beginning with an introduction into the “electrification of biotechnology” as well as the underlying fundamentals, the volume then discusses a wide range of topics based on the interfacing of biotechnological and electrochemical reaction steps. It includes contributions on the different aspects of bioelectrochemical applications for synthesis purposes, i.e. the production of fine and platform chemicals based on enzymatically or microbially catalyzed reactions driven by electric energy. The volume finishes with a summary and outlook chapter which gives an overview of the current status of the field and future perspectives. Edited by experts in the field, and authored by a wide range of international researchers, this volume assesses how research from today’s lab bench can be developed into industrial applications, and is of interest to researchers in academia and industry.