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Electronic Structure And Surfaces Of Sulfide Minerals

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Electronic Structure and Surfaces of Sulfide Minerals

Electronic Structure and Surfaces of Sulfide Minerals Book
Author : Jianhua Chen,Zhenghe Xu,Ye Chen
Publisher : Unknown
Release : 2020-02
ISBN : 9780128179741
Language : En, Es, Fr & De

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Book Description :

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

Electronic Structure and Surfaces of Sulfide Minerals

Electronic Structure and Surfaces of Sulfide Minerals Book
Author : Jianhua Chen,Zhenghe Xu,Ye Chen
Publisher : Elsevier
Release : 2020-04-23
ISBN : 0128179759
Language : En, Es, Fr & De

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Book Description :

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

Sulfide Mineralogy and Geochemistry

Sulfide Mineralogy and Geochemistry Book
Author : David J. Vaughan
Publisher : Walter de Gruyter GmbH & Co KG
Release : 2018-12-17
ISBN : 1501509497
Language : En, Es, Fr & De

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Book Description :

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.

Microscopic Properties and Processes in Minerals

Microscopic Properties and Processes in Minerals Book
Author : Kate Wright,Richard Catlow,Charles Richard Arthur Catlow
Publisher : Springer Science & Business Media
Release : 1999-10-31
ISBN : 9780792359814
Language : En, Es, Fr & De

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Book Description :

A detailed account of the application of modern physical and chemical techniques to the elucidation of the structures and properties of minerals at the atomic level. Strong emphasis is given to the application of computer modelling methods, spectroscopic techniques and both X-ray and neutron scattering methods. Detailed surveys are presented of the contemporary understanding of the equations of state for Mantle minerals; and special attention is paid to the properties of dissolved water in silicate minerals.

Electrochemistry in Mineral and Metal Processing V

Electrochemistry in Mineral and Metal Processing V Book
Author : Fiona M. Doyle,R. Woods
Publisher : The Electrochemical Society
Release : 2000
ISBN : 9781566772792
Language : En, Es, Fr & De

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Book Description :

Download Electrochemistry in Mineral and Metal Processing V book written by Fiona M. Doyle,R. Woods, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Rock forming Minerals

Rock forming Minerals Book
Author : J. F. W. Bowles,R. A. Howie,D. J. Vaughan,J. Zussman
Publisher : Geological Society of London
Release : 1978
ISBN : 9781862393158
Language : En, Es, Fr & De

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Book Description :

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).

Fluid Inclusion Effect in Flotation of Sulfide Minerals

Fluid Inclusion Effect in Flotation of Sulfide Minerals Book
Author : Shuming Wen,Jian Liu,Jiushuai Deng
Publisher : Elsevier
Release : 2019-11-22
ISBN : 012819846X
Language : En, Es, Fr & De

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Book Description :

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

Surface Chemistry of Froth Flotation

Surface Chemistry of Froth Flotation Book
Author : S. Ramachandra Rao
Publisher : Springer Science & Business Media
Release : 2013-06-29
ISBN : 1475743025
Language : En, Es, Fr & De

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Book Description :

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.

Molecular Modeling Theory

Molecular Modeling Theory Book
Author : Randall T. Cygan,James D. Kubicki
Publisher : Walter de Gruyter GmbH & Co KG
Release : 2018-12-17
ISBN : 1501508725
Language : En, Es, Fr & De

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Book Description :

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.

Chemical Modelling

Chemical Modelling Book
Author : Michael Springborg,Jan-Ole Joswig
Publisher : Royal Society of Chemistry
Release : 2018-02-21
ISBN : 1788010043
Language : En, Es, Fr & De

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Book Description :

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.

Mineral Water Interface Geochemistry

Mineral Water Interface Geochemistry Book
Author : Michael F. Hochella,Art F. White
Publisher : Walter de Gruyter GmbH & Co KG
Release : 2018-12-17
ISBN : 1501509136
Language : En, Es, Fr & De

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Book Description :

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).

Theoretical Geochemistry

Theoretical Geochemistry Book
Author : John A. Tossell,David J. Vaughan
Publisher : Oxford University Press on Demand
Release : 1992-03-19
ISBN : 0195044037
Language : En, Es, Fr & De

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Book Description :

This is the first book to describe and review the application of quantum mechanical theories to minerals and geochemical systems.

Bioelectrosynthesis

Bioelectrosynthesis Book
Author : Falk Harnisch,Dirk Holtmann
Publisher : Springer
Release : 2019-01-04
ISBN : 303003299X
Language : En, Es, Fr & De

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Book Description :

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.

Encyclopedia of Surface and Colloid Science

Encyclopedia of Surface and Colloid Science Book
Author : P. Somasundaran
Publisher : CRC Press
Release : 2006
ISBN : 9780849395741
Language : En, Es, Fr & De

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Book Description :

Download Encyclopedia of Surface and Colloid Science book written by P. Somasundaran, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Electronic Characterisation of Earth Abundant Sulphides for Solar Photovoltaics

Electronic Characterisation of Earth   Abundant Sulphides for Solar Photovoltaics Book
Author : Thomas James Whittles
Publisher : Springer
Release : 2018-07-31
ISBN : 3319916653
Language : En, Es, Fr & De

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Book Description :

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.

Microbial Processing of Metal Sulfides

Microbial Processing of Metal Sulfides Book
Author : Edgardo R. Donati,Wolfgang Sand
Publisher : Springer Science & Business Media
Release : 2007-05-11
ISBN : 1402055897
Language : En, Es, Fr & De

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Book Description :

The application of microbiological methods to the extraction of metals from minerals is supported by several bioleaching and biooxidation processes operating in different sites over the world. This book details the basic aspects of the process with special emphasis on recent contributions regarding the chemical and microbial aspects of the bioleaching process and the use of microorganisms in the treatment of complex ores and concentrates.

Hydrometallurgical Process Fundamentals

Hydrometallurgical Process Fundamentals Book
Author : Renato G. Bautista
Publisher : Springer
Release : 2013-12-19
ISBN : 1489922741
Language : En, Es, Fr & De

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Book Description :

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.

Sulfidic Sediments and Sedimentary Rocks

Sulfidic Sediments and Sedimentary Rocks Book
Author : David Rickard
Publisher : Newnes
Release : 2012-12-31
ISBN : 0080931839
Language : En, Es, Fr & De

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Book Description :

This book deals with sedimentary sulfides which are the most abundant authigenic minerals in sediments. Special emphasis is given to the biogeochemistry that plays such a central role in the formation of sedimentary sulfides. It will be of interest to scientists in a number of disciplines, including geology, microbiology, chemistry and environmental science. The sulfur system is important to environmental scientists considering the present and future effects of pollution and anoxia. The development of the sulfur system – particularly the characteristics of ocean anoxia over the last 200 Ma – is useful in predicting the future fate of the Earth surface system as well as in understanding the past. The biochemistry and microbiology of the sulfur system are key to understanding microbial ecology and the evolution of life. First monograph on sedimentary sulfides, covering the ancient and modern sedimentary sulfide systems Comprehensive, integrating chemistry, microbiology, geology and environmental science All key references are included and discussed

Handbook of Surface and Interface Analysis

Handbook of Surface and Interface Analysis Book
Author : John C. Riviere,Sverre Myhra
Publisher : CRC Press
Release : 2009-06-24
ISBN : 1420007807
Language : En, Es, Fr & De

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Book Description :

The original Handbook of Surface and Interface Analysis: Methods for Problem-Solving was based on the authors' firm belief that characterization and analysis of surfaces should be conducted in the context of problem solving and not be based on the capabilities of any individual technique. Now, a decade later, trends in science and technology appear

Flotation Reagents Applied Surface Chemistry on Minerals Flotation and Energy Resources Beneficiation

Flotation Reagents  Applied Surface Chemistry on Minerals Flotation and Energy Resources Beneficiation Book
Author : Dianzuo Wang
Publisher : Springer
Release : 2016-10-08
ISBN : 9811020302
Language : En, Es, Fr & De

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Book Description :

This book summarizes the author’s findings on the functional principle of flotation reagents, gathered over the past few decades. The fundamentals of and approaches common to surface chemistry are applied to study the reagents’ structure and performance, as well as their interaction with minerals. In particular, the book establishes the theoretical criteria for collector performance. It also includes the quantum chemistry parameters, steric configuration, HOMO and LUMO surface of various reagents. The book offers a valuable resource for all university graduate students, researchers and R&D engineers in minerals processing and extractive metallurgy who wish to explore innovative reagents and technologies that lead to more energy efficient and environmentally sustainable solutions.