This book gives details on the processes of agglomeration and its role in modern metal production processes. It starts with a chapter on sinter production, also discussing the quality of sinter and environmental aspects involved on the process. The following chapters focus on pellet production and briquetting of natural and anthropogenic raw materials. It also highlights the best available technologies for briquetting by stiff extrusion.
This book focuses on agglomeration, or the size enlargement process, of iron ores. This process sits at the interface of mineral processing and extractive metallurgy. The book begins with a discussion of raw materials preparation and the beneficiation process. It then describes fundamental principles of the sintering and pelletization processes, including formation of green mix through granulation and green balls as well as chemical reactions during sintering. Finally, it offers a brief description of iron making processes and correlations related to the agglomerates: quality parameters and BF productivity and coke rate.
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.
This book explains how the specifics of Stiff Extrusion influence on the metallurgical properties of Extruded Briquettes. The practical experience of the utilization of Stiff Extrusion in metallurgy obtained so far suggests that this technology can substitute (partially or by 100%) environmentally unfriendly sintering. The authors start reviewing the existing briquetting technologies, providing the reader later on with the specifics of stiff extrusion briquetting technology. Other aspects treated are the applications of extruded briquettes on blast furnace and for the production of manganese ferro alloys. The authors suggest stuff extrusion briquetting technology for direct reduction iron production and list several alternative unconventional applications.
Biomass and Carbon Fuels in Metallurgy presents contemporary and new insights into the use of carbonaceous (Biomass) fuels in the metallurgical sector. The authors describe application of these fuels in different technological processes to produce pig iron, steel and ferroalloys. Emphasis is placed on biomass and its metallurgical utilization. Coverage includes the specification of fuels, their classification and the characteristics of their basic properties. The use of carbonaceous fuels in the production of various kinds of agglomerates (ferriferous, manganese and metalized) is also covered. Key Features: Provides a comprehensive view of carbonaceous fuels in various metallurgy processes Details experiments conducted on the use of traditional and alternative (biomass) carbonaceous fuels for the production of agglomerates. Demonstrates that the energy potential of biomass can also be successfully used in pyrometallurgical processes Describes applications of biomass-based fuels in different technological processes for the production of pig iron, steel and ferroalloys. Coverage includes the specification of fuels, their classification and the characteristics of their basic properties.
Iron Ore: Mineralogy, Processing and Environmental Sustainability, Second Edition covers all aspects surrounding the second most important commodity behind oil. As an essential input for the production of crude steel, iron ore feeds the world's largest trillion-dollar-a-year metal market and is the backbone of the global infrastructure. The book explores new ore types and the development of more efficient processes/technologies to minimize environmental footprints. This new edition includes all new case studies and technologies, along with new chapters on the chemical analysis of iron ore, thermal and dry beneficiation of iron ore, and discussions of alternative iron making technologies. In addition, information on recycling solid wastes and P-bearing slag generated in steel mills, sustainable mining, and low emission iron making technologies from regional perspectives, particularly Europe and Japan, are included. This work will be a valuable resource for anyone involved in the iron ore industry. - Provides an overall view of the entire value chain, from iron ore to metal - Includes specific information on process/stage/operation in the value chain - Discusses challenges and developments, along with future trends in the iron ore and steel industries - Incorporates new, sustainable mining techniques
Rather than simply describing the processes and reactions involved in metal extraction, this book concentrates on fundamental principles to give readers an understanding of the possibilities for future developments in this field. It includes a review of the basics of thermodynamics, kinetics and engineering principles that have special importance for extractive metallurgy, to ensure that readers have the background necessary for maximum achievement. The various metallurgical unit processes (such as roasting, reduction, smelting and electrolysis) are illustrated by existing techniques for the extraction of the most common metals. Each chapter includes a bibliography of recommended reading, to aid in further study. The appendices include tables and graphs of thermodynamic qualities for most substances of metallurgical importance; these are ideal for calculating heat (enthalpy) balances and chemical equilibrium constants. SI Units are used consistently throughout the text.
David A. Scott provides a detailed introduction to the structure and morphology of ancient and historic metallic materials. Much of the scientific research on this important topic has been inaccessible, scattered throughout the international literature, or unpublished; this volume, although not exhaustive in its coverage, fills an important need by assembling much of this information in a single source. Jointly published by the GCI and the J. Paul Getty Museum, the book deals with many practical matters relating to the mounting, preparation, etching, polishing, and microscopy of metallic samples and includes an account of the way in which phase diagrams can be used to assist in structural interpretation. The text is supplemented by an extensive number of microstructural studies carried out in the laboratory on ancient and historic metals. The student beginning the study of metallic materials and the conservation scientist who wishes to carry out structural studies of metallic objects of art will find this publication quite useful.
