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Hydrodynamic And Surface Chemistry Effects In Coal Oil Agglomerate Flotation
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Book Synopsis Hydrodynamic and Surface Chemistry Effects in Coal-oil Agglomerate Flotation by : Kenneth Peter Darcovich
Download or read book Hydrodynamic and Surface Chemistry Effects in Coal-oil Agglomerate Flotation written by Kenneth Peter Darcovich and published by . This book was released on 1993 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface properties of coal-oil agglomerates were incorporated into a model based on the resolved hydrodynamics of the flotation process. The overall result was an integrated model where individual local mechanisms could be summed to determine recovery values which compared very well to a wide range of data. (Abstract shortened by UMI.).
Book Synopsis Coal Flotation and Fine Coal Utilization by : J. Laskowski
Download or read book Coal Flotation and Fine Coal Utilization written by J. Laskowski and published by Gulf Professional Publishing. This book was released on 2001-07-04 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full text e-book available as part of the Elsevier ScienceDirect Earth and Planetary Sciences subject collection.
Book Synopsis Coal Flotation and Fine Coal Utilization by : J. Laskowski
Download or read book Coal Flotation and Fine Coal Utilization written by J. Laskowski and published by Elsevier Science. This book was released on 2001 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: To stay profitable while complying with environmental regulations requires that the coal industry not only improve fine coal recovery but also finds better ways for its utilization. This is the first monograph on the processing of fine coal which recognizes that all unit operations that handle fine coal depend on coal surface properties, and which in one single volume provides a comprehensive introduction to coal surface chemistry, using it rigorously in treating coal flotation fundamentals and engineering, fine coal manipulation, pelletization and briquetting, and coal-water slurries. Readers involved in mineral processing, chemical engineering, mining and metallurgical engineering; technical personnel working for reagent suppliers; and scientists researching the field of coal surface chemistry, flotation and fine coal utilization will find this volume of great interest.
Book Synopsis Surface Chemistry of Coal Flotation Systems by : Sadan Kelebek
Download or read book Surface Chemistry of Coal Flotation Systems written by Sadan Kelebek and published by . This book was released on 1980 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interfacial Phenomena in Coal Technology by : Botsaris
Download or read book Interfacial Phenomena in Coal Technology written by Botsaris and published by CRC Press. This book was released on 1988-12-22 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: A different face of coal than that seen by miners. Focusses on the conversion of coal to a liquid and the clean utilization of coal. Among topics discussed are surface phenomena involved in the beneficiation processes, flotation and spherical agglomeration, the modification of coal-fluid interfaces,
Book Synopsis Effects of Selected Operating Variables on Continuous-cell Flotation of Coal by : John B. Gayle
Download or read book Effects of Selected Operating Variables on Continuous-cell Flotation of Coal written by John B. Gayle and published by . This book was released on 1962 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sustainable Management of Coal Preparation by : Dilip Kumar
Download or read book Sustainable Management of Coal Preparation written by Dilip Kumar and published by Woodhead Publishing. This book was released on 2018-05-31 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Management of Coal Preparation explains both the upstream and downstream of coal preparation, stressing clean coal technologies for coal utilization. It not only discusses the sustainability of coal preparation, but also considers the governance and management issues that come with fulfilling economic, social and environmental obligations of a sustainable mining operation. Divided in three parts, the book explains the preparation of coking and non-coking coal, clean technologies, the principles of sustainable management and emerging management issues. The inclusion of case studies also provides a practical perspective for the planning and design of coal preparation activities and environmental management. - Offers an integrated approach to pursue sustainable management between mining, coal preparation and final use of coal - Explains the economic aspects of coal preparation in a modern/developing society with zero-waste concept - Compiles the best technologies from around the world - Uses India, a developing country, as a case study to apply technologies where there is maximum potential for application and benefit
Book Synopsis Surface Chemistry of Selective Resinite Flotation from Wasatch Plateau Coal by : Qiang Yu
Download or read book Surface Chemistry of Selective Resinite Flotation from Wasatch Plateau Coal written by Qiang Yu and published by . This book was released on 1991 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Interfacial Chemistry of Coal and Its Relation to Coal Flotation by : Young-Soo You
Download or read book The Interfacial Chemistry of Coal and Its Relation to Coal Flotation written by Young-Soo You and published by . This book was released on 1983 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1990 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flotation and Flocculation Chemistry of Coal and Oxidized Coals by :
Download or read book Flotation and Flocculation Chemistry of Coal and Oxidized Coals written by and published by . This book was released on 1990 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to understand the fundamentals involved in the flotation and flocculation of coal and oxidized coals and elucidate mechanisms by which surface interactions between coal and various reagents enhance coal beneficiation. An understanding of the nature of the heterogeneity of coal surfaces arising from the intrinsic distribution of chemical moieties is fundamental to the elucidation of mechanism of coal surface modification and its role in interfacial processes such as flotation, flocculation and agglomeration. A new approach for determining the distribution in surface properties of coal particles was developed in this study and various techniques capable of providing such information were identified. Distributions in surface energy, contact angle and wettability were obtained using novel techniques such as centrifugal immersion and film flotation. Changes in these distributions upon oxidation and surface modifications were monitored and discussed. An approach to the modelling of coal surface site distributions based on thermodynamic information obtained from gas adsorption and immersion calorimetry is proposed. Polyacrylamide and dodecane was used to alter the coal surface. Methanol adsorption was also studied. 62 figs.
Book Synopsis Micro-agglomerate Flotation for Deep Cleaning of Coal. Final Report by :
Download or read book Micro-agglomerate Flotation for Deep Cleaning of Coal. Final Report written by and published by . This book was released on 1997 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of practical technologies for the deep cleaning of coal has been seriously hampered by the problems of carrying out efficient coal/mineral separations at the very fine sizes (often finer than 10 [mu]m) needed to achieve adequate liberation of the mineral matter from the coal matrix. In this investigation a hybrid process--Micro-agglomerate flotation--which is a combination of oil-agglomeration and froth flotation was studied. The basic concept is to use small quantities of oil to promote the formation of dense micro-agglomerates with minimal entrapment of water and mineral particles and to use froth flotation to separate these micro-agglomerates from the water/dispersed-mineral phase. Since the floating units will be relatively large agglomerates (30--50 [mu]m in size) rather than fine coal particles (1--10 [mu]m) the problems of froth overload and water/mineral carryover should be significantly alleviated. There are, however, complications. The process involves at least five phases: two or more solids (coal and mineral), two liquids (oil and water) and one gas (air). It is demonstrated in this study that the process is very sensitive to fluctuations in operating parameters. It is necessary to maintain precise control over the chemistry of the liquid phases as well as the agitation conditions in order to promote selectivity. Both kinetics as well as thermodynamic factors play a critical role in determining overall system response.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colloid Chemistry in Mineral Processing by : J.S. Laskowski
Download or read book Colloid Chemistry in Mineral Processing written by J.S. Laskowski and published by Elsevier. This book was released on 2015-08-14 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within this volume is a thorough coverage of the fundamental principles embracing modern theories of colloid chemistry applied to mineral processing. It is written in respect for Dr. J.A. Kitchener, distinguished Reader in the Science of Mineral Processing in the Royal School of Mines, Imperial College, University of London (recently retired). Dr. Kitchener's expertise in colloid chemistry has led to numerous fundamental insights and practical advances in flotation, selective flocculation, and the treatment of slimes. Colloid chemistry is inevitably involved in all aspects of mineral processing, ranging from how collectors selectively adsorb on to mineral surfaces in flotation, to the forces which control the stability of dispersions of submicron particles, as well as embracing the behaviour of hydrolyzed metal ions in solid-water slurries. The intelligent use of this information is essential in the effective design of separation processes and strategies by the mineral processor. Up to date bibliographies are included at the end of each of the 13 chapters making this volume a useful general resource for researchers, students and mineral processors.
Book Synopsis Micro-agglomerate Flotation for Deep Cleaning of Coal by :
Download or read book Micro-agglomerate Flotation for Deep Cleaning of Coal written by and published by . This book was released on 1993 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are investigating the use of a hybrid process, Micro-agglomerate flotation, which is a combination of oil-agglomeration and froth flotation. The basic concept is to use small quantities of oil to promote the formation of dense micro-agglomerates with minimal entrapment of water and mineral particles, and to use froth flotation to extract these micro-agglomerates from the water/dispersed-mineral phase. Since the floating units are agglomerates (about 30--50 [mu]m in size) rather than individual coal particles (1--10 [mu]m) the problems of froth overload and water/mineral carryover should be significantly alleviated. Micro-agglomerate flotation has considerable potential for the practical deep cleaning of coal on a commercial scale. In principle, it should be possible to achieve both high selectivity and high yield at reasonable cost. The process requires only conventional, off-the-shelf equipment and reagent usage (oil, surfactants, etc.) should be small. There are, however, complications. The process involves at least five phases: two or more solids (coal and mineral), two liquids (oil and water) and one gas (air). It is necessary to maintain precise control over the chemistry of the liquid phases in order to promote the interfacial reactions and interactions between phases necessary to ensure selectivity. Kinetics as well as thermodynamic factors may be critical in determining overall system response.
Book Synopsis Surface Chemistry of Froth Flotation by : Jan Leja
Download or read book Surface Chemistry of Froth Flotation written by Jan Leja and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of froth flotation is an outstanding example of applied surface chemistry. It is extensively used in the mining, mineral, metallurgical, and chemical industries for separation and selective concentration of individual minerals and other solids. Substances so concentrated serve as raw materials for producing appropriate metals and chemicals. The importance of flotation in technology is chiefly due to the ease with which it can be made selective and versatile and to the economy of the process. The objective of this book is to review the fundamentals of surface chemistry together with the relevant aspects of organic and inorganic chemistry that-in the opinion of the author-are important ~ control of the froth flotation process. The review updates the information that had been available in books by Sutherland and Wark (1955), Gaudin (1957), Klassen and Mokrousov (1963), and GIembotsky et al. (1963). It emphasizes mainly the surface chemical aspects of the process, leaving other relevant topics such as hydrodynamics, mechanical and electrical technology, cir cuit design and engineering, operations research, instrumentation tech nology, modeling, etc., to appropriate specialized treatments.
Book Synopsis Agglomeration Processes by : Wolfgang B. Pietsch
Download or read book Agglomeration Processes written by Wolfgang B. Pietsch and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agglomeration is integral to the processes of modification of powders, production of composites and creation of new materials which are required in pharmaceuticals, foods, chemicals, fertilizers and agrochemicals, minerals, ceramics, metallurgy and all material producing industries. The binding mechanisms and the particle behavior as well as the characteristics of the processes and the resulting agglomerates are the same whether they are occuring in the 'ultra-clean' pharmaceutical or food industries or in 'dirty' minerals or waste processing plants. The book introduces the interdisciplinary approach to the development of new concepts and the solution of problems. It is a complete and up-to-date practical guide describing the various agglomeration phenomena and industrial techniques for size enlargement. In addition to introducing the properties of agglomerates and the characteristics of the different methods, descriptions of the machinery and discussions of specific equipment features are the main topics. The detailed evaluation of the subject is based on the authors experience as student, researcher, teacher, developer, designer, vendor, and user as well as expert and consultant in the field of agglomeration, its technologies and products, and is complemented by the know-how of colleagues who are active in specific areas and information from vendors. It is intended for everybody working in industries that process and handle particulate solids as it aims to help understand and control unwanted agglomeration as well as use, improve, and develop methods for the beneficial size enlargement by agglomeration.
