Download or read book Interaction of Ethyl Xanthate with Pyrite and Pyrrhotite Minerals written by Marianne Montalti and published by . This book was released on 1994 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactions Between Sulphide Minerals and Xanthates 1 The Formation of Monothiocarbonate at Galena and Pyrite Surfaces written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate of decomposition of potassium ethyl monothiocarbonate has been determined at pH values between 5 and 10, and its molar absorptivity at 221 nm determined to be 1.24x10000 mol/cm. A novel apparatus for use in the study of reactions between sulphide minerals, oxygen and thiol reagents has been developed, and applied to the reactions of potassium ethyl xanthate with galena and pyrite. It has been shown that both minerals react with ethyl xanthate in the presence of oxygen or oxidation products to form soluble as well as adsorbed xanthate derivatives. The soluble derivative has been identified to be ethyl monothiocarbonate. The adsorbed xanthate at a galena surface, unlike that at a pyrite surface, is gradually converted to a soluble monothiocarbonate under the action of dissolved oxygen. The effect of variables such as pH, the initial xanthate and oxygen concentrations, and the initial state of oxidation of the mineral on the formation of monothiocarbonate has been studied. It is tentatively proposed that an intermediate adsorbed mixed xanthate-hydroxide species is involved in the formation of monothiocarbonate at both galena and pyrite surfaces. The significance of the formation of monothiocarbonate to flotation practice is discussed briefly. The formation of monothiocarbonate represents a wastage of reagent, and could lead to a decrease in flotability of xanthated galena with time of exposure to aerated solutions. (AUAB).
Download or read book The Physical Chemistry of Mineral reagent Interactions in Sulfide Flotation written by and published by . This book was released on 1979 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Metal Ion Transfer Between Sulphide Minerals and Effect on Xanthate Interaction with Pyrite written by Chihyu Caroline Sui and published by . This book was released on 1996 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effect of Pb ions on pyrite in the presence of xanthate, and diethylene triamine (DETA) was investigated by cyclic voltammetry, ex situ spectroelectrochemical analysis and zeta potential measurements." --
Download or read book Principles of Mineral Processing written by Maurice C. Fuerstenau and published by SME. This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference examines all aspects of mineral processing, from the handling of raw materials to separation strategies to the remediation of waste products. It incorporates state-of-the-art developments in the fields of engineering, chemistry, computer science, and environmental science.
Download or read book Froth Flotation written by Maurice C. Fuerstenau and published by SME. This book was released on 2007 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: &Quot;Froth Flotation: A Century of Innovation comprehensively describes state-of-the-art research and practice in mineral froth flotation a century after its introduction. Recognized experts from around the world provide in-depth coverage on many facets of flotation, including the historical aspects; fundamentals; chemistry; flotation cells, modeling, and simulation; and flotation plant practice. This commemorative volume is an invaluable reference for industry professionals, researchers, and graduate students."--BOOK JACKET.
Download or read book Electrochemical Interactions Between Sulfide Minerals and Grinding Media and Their Effects on Flotation and Media Wear written by Roberto Luis Pozzo and published by . This book was released on 1987 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Information Circular written by and published by . This book was released on 1980 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Reagents in Mineral Technology written by P. Somasundaran and published by Routledge. This book was released on 2018-04-27 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reagents in Mineral Technology provides comprehensive coverage of both basic as well asapplied aspects of reagents utilized in the minerals industry.This outstanding, single-source reference opens with an explicit account of flotation fundamentals,including coverage of wetting phenomena, mineral/water interfacial phenomena, flo tationchemistry, and flocculation and dispersion of mineral suspensions.It then discusses flotation of sulfide and nonsulfide minerals, with attention to formation ofclithiolates, formation of metal thiol compounds, application of fatty acids, sulfosuccinic acids,amines, and other collectors.Reagents in Mineral Technology also reviews adsorption of surfactants on minerals .. .details adsorption of polymers .. . and considers the chemistry and application of chelation agentsin minerals separations.Additional chapters consider grinding aids, frothers, inorganic and polymeric depressants,dewatering and filtering aids, analytical techniques, and much more.Unique in its depth of coverage, Reagents in Mineral Technology will prove an invaluablereference for mineral engineers and processors; analytical, surface, colloid, and physical chemists;petroleum, petrochemical, metallurgical, and mining engineers; and for use in advancedundergraduate- and graduate-level courses in these and related fields.
Download or read book Information Circular written by and published by . This book was released on 1979 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Surfaces written by D. Vaughan and published by Springer. This book was released on 1995 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: 30% discount for members of The Mineralogical Society of Britain and Ireland This text summarises the state-of-the-art in the study of mineral surfaces and some of the key applications of surface science in mineralogy and mineral chemistry. Each chapter covers a particular aspect of the subject and is written by an expert who raises the key issues involved for those requiring an introduction to the subject, whilst highlighting most recent developments. Advanced undergraduates, postgraduates and researchers alike will find this essential reading as it is the first book to review the fast developing field of mineral surfaces.
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 Transactions of Society of Mining Engineers Inc written by and published by . This book was released on 1989 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
