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Author: P. Baláž Publisher: Elsevier ISBN: 0080531539 Category : Technology & Engineering Languages : en Pages : 293
Book Description
Mechanical activation of solids is a part of mechanochemistry, the science with a sound theoretical foundation exhibiting a wide range of potential application. Mechanical activation itself is an innovative procedure where an improvement in technological processes can be attained via a combination of new surface area and defects formation in minerals. Mechanical activation is of exceptional importance in extractive metallurgy and mineral processing and this area forms the topic of this book and is the result of more than twenty years of research and graduate teaching in the field. In pyrometallurgy, the mechanical activation of minerals makes it possible to reduce their decomposition temperatures or causes such a degree of disordering that the thermal activation may be omitted entirely. The potential mitigation of environmental pollutants is becoming increasingly important in this context. The lowering of reaction temperatures, the increase of the rate and amount of solubility, preparation of water soluble compounds, the necessity for simpler and less expensive reactors and shorter reaction times are some of the advantages of mechanical activation in hydrometallurgy. The environmental aspects of these processes are particularly attractive. Several industrial processes are examined and their flowsheets are presented as succesful of activation. In these processes, the introduction of a mechanical activation step into the technological cycle significantly modifies the subsequent steps. The book is designed for researchers, teachers, operators and students in the areas of extractive metallurgy, mineral processing, mineralogy, solid state chemistry and materials science.It will encourage newcomers to the mechanochemistry to do useful research and discover novel applications in this field.
Author: P. Baláž Publisher: Elsevier ISBN: 0080531539 Category : Technology & Engineering Languages : en Pages : 293
Book Description
Mechanical activation of solids is a part of mechanochemistry, the science with a sound theoretical foundation exhibiting a wide range of potential application. Mechanical activation itself is an innovative procedure where an improvement in technological processes can be attained via a combination of new surface area and defects formation in minerals. Mechanical activation is of exceptional importance in extractive metallurgy and mineral processing and this area forms the topic of this book and is the result of more than twenty years of research and graduate teaching in the field. In pyrometallurgy, the mechanical activation of minerals makes it possible to reduce their decomposition temperatures or causes such a degree of disordering that the thermal activation may be omitted entirely. The potential mitigation of environmental pollutants is becoming increasingly important in this context. The lowering of reaction temperatures, the increase of the rate and amount of solubility, preparation of water soluble compounds, the necessity for simpler and less expensive reactors and shorter reaction times are some of the advantages of mechanical activation in hydrometallurgy. The environmental aspects of these processes are particularly attractive. Several industrial processes are examined and their flowsheets are presented as succesful of activation. In these processes, the introduction of a mechanical activation step into the technological cycle significantly modifies the subsequent steps. The book is designed for researchers, teachers, operators and students in the areas of extractive metallurgy, mineral processing, mineralogy, solid state chemistry and materials science.It will encourage newcomers to the mechanochemistry to do useful research and discover novel applications in this field.
Author: Roger Rumbu Publisher: Lulu.com ISBN: 138771001X Category : Technology & Engineering Languages : en Pages : 386
Book Description
This book contains information about how main base metals are made, what everyone especially metallurgists, chemists, process and mine engineers should know about their elaboration from the mine to the metallic state.This book is already used by several applied sciences department and engineering schools and universities in the world.Processes are clearly explained and described with more than 100 flow-sheets, sketches and graphs. This book contains common and up-to-date extraction processes and will fill the will to know of many, it will help to have in hand the essential on extractive metallurgy of base metals and some strategic ones.This book is written in a clear and understandable way by an experienced metallurgist engineer and can be read by focusing straight on a particular metallurgy as it is developed metal by metal.All processes are different even if some are similar, you have better to go through to learn or refresh yourself.Roger Rumbu, Met. Eng., P.P.M., T.B.O.M.
Author: Alain Vignes Publisher: John Wiley & Sons ISBN: 1118616979 Category : Technology & Engineering Languages : en Pages : 277
Book Description
Extractive metallurgy is the art and science of extracting metals from their ores and refining them. The production of metals and alloys from these source materials is still one of the most important and fundamental industries in both developed and developing economies around the world. The outputs and products are essential resources for the metallic, mechanical, electromagnetic, electrical and electronics industries (silicon is treated as a metal for these purposes). This series is devoted to the extraction of metals from ores, concentrates (enriched ores), scraps, and other sources and their refining to the state of either liquid metal before casting or to solid metals. The extraction and refining operations that are required may be carried out by various metallurgical reaction processes. Extractive Metallurgy 1 deals with the fundamentals of thermodynamics and kinetics of the reaction processes. Extractive Metallurgy 2 focuses on pyrometallurgical, hydrometallurgical, halide and electro-metallurgical (conversion) processes. Extractive Metallurgy 3 deals with the industrial processing operations, technologies, and process routes, in other words the sequence of steps or operations used to convert the ore to metal. Processes and operations are studied using the methodology of "chemical reaction engineering". As the fundamentals of the art and science of Extractive Metallurgy are infrequently taught as dedicated university or engineering schools courses, this series is intended both for students in the fields of Metallurgy and Mechanical Engineering who want to acquire this knowledge, and also for engineers put in charge of the operation of an industrial production unit or the development of a new process, who will need the basic knowledge of the corresponding technology.
Author: Roger Rumbu Publisher: Lulu.com ISBN: 0359557058 Category : Technology & Engineering Languages : en Pages : 300
Book Description
Actuellement, prêt de 20%% de la production mondiale de cobalt, soient prêt de 10 000 tonnes et 60%% de la production mondiale de super-alliages à base de cobalt sont récupérés par les USA qui considèrent ce métal comme hautement stratégique au point que sa carence pourrait affecter sérieusement ses domaines économiques, industriels et militaires ainsi que ceux de nombreux pays hautement industrialisés. On trouve ainsi dans cet ouvrage des informations sur l'origine, l'élaboration du cobalt, son recyclage et son utilisation tout cela illustré de près de 80 flow-sheets, croquis et graphes. Cet ouvrage est un recueil, une mine d'informations, d'expériences et de pratiques industrielles utiles à avoir pour mieux connaître l'un des métaux le plus influent sur l'échiquier stratégique et économique mondial. Roger RUMBU, Met. Eng., PPM.
Author: Roger Rumbu Publisher: Lulu.com ISBN: 1387680897 Category : Technology & Engineering Languages : en Pages : 244
Book Description
This book is a compendium, a mine of information, experiences and relevant industry practices, a must have, a book to learn about one of the most influential strategic metal impacting the global economic scene. Roger RUMBU, Met. Eng. - University of Lubumbashi, PPM Certificate - University of Pretoria
Author: Alain Vignes Publisher: John Wiley & Sons ISBN: 1118617029 Category : Technology & Engineering Languages : en Pages : 302
Book Description
Extractive metallurgy is the art and science of extracting metals from their ores and refining them. The production of metals and alloys from these source materials is still one of the most important and fundamental industries in both developed and developing economies around the world. The outputs and products are essential resources for the metallic, mechanical, electromagnetic, electrical and electronics industries (silicon is treated as a metal for these purposes). This series is devoted to the extraction of metals from ores, concentrates (enriched ores), scraps, and other sources and their refining to the state of either liquid metal before casting or to solid metals. The extraction and refining operations that are required may be carried out by various metallurgical reaction processes. Extractive Metallurgy 1 deals with the fundamentals of thermodynamics and kinetics of the reaction processes. Extractive Metallurgy 2 focuses on pyrometallurgical, hydrometallurgical, halide and electro-metallurgical (conversion) processes. Extractive Metallurgy 3 deals with the industrial processing operations, technologies, and process routes, in other words the sequence of steps or operations used to convert the ore to metal. Processes and operations are studied using the methodology of “chemical reaction engineering”. As the fundamentals of the art and science of Extractive Metallurgy are infrequently taught as dedicated university or engineering schools courses, this series is intended both for students in the fields of Metallurgy and Mechanical Engineering who want to acquire this knowledge, and also for engineers put in charge of the operation of an industrial production unit or the development of a new process, who will need the basic knowledge of the corresponding technology.
Author: Alain Vignes Publisher: John Wiley & Sons ISBN: 1118619676 Category : Technology & Engineering Languages : en Pages : 273
Book Description
This book is dedicated to the processes of mineral transformation, recycling and reclamation of metals, for the purpose of turning metals and alloys into a liquid state ready for pouring. Even though "process metallurgy" is one of the oldest technologies implemented by man, technological innovation, with the development of processes that are both focused on product quality and economically and ecologically efficient, continues to be at the heart of these industries. This book explains the physico-chemical bases of transformations, vital to their understanding and control (optimization of operational conditions), and the foundations in terms of "process engineering" (heat and matter assessment, process coupling: chemical reactions and transport phenomena), vital to the optimal execution and analysis of transformation process operations. This book is addressed to students in the field of metallurgy and to engineers facing the problem of metal and alloy development (operation of an industrial unit or development of a new process).
Author: William G. Davenport Publisher: Elsevier ISBN: 0080531520 Category : Technology & Engineering Languages : en Pages : 459
Book Description
This new edition has been extensively revised and updated since the 3rd edition published in 1994. It contains an even greater depth of industrial information, focussing on how copper metal is extracted from ore and scrap, and how this extraction could be made more efficient. Modern high intensity smelting processes are presented in detail, specifically flash, Contop, Isasmelt, Noranda, Teniente and direct-to-blister smelting. Considerable attention is paid to the control of SO2 emissions and manufacture of H2SO4. Recent developments in electrorefining, particularly stainless steel cathode technology are examined. Leaching, solvent extraction and electrowinning are evaluated together with their impact upon optimizing mineral resource utilization. The book demonstrates how recycling of copper and copper alloy scrap is an important source of copper and copper alloys. Copper quality control is also discussed and the book incorporates an important section on extraction economics. Each chapter is followed by a summary of concepts previously described and offers suggested further reading and references.
Author: P. Baláž
Author: P. Baláž
Author: Roger Rumbu
Author: Roger Rumbu
Author: Alain Vignes
Author: Roger Rumbu
Author: Roger Rumbu
Author: Alain Vignes
Author: Alain Vignes
Author: F. Habashi
Author: William G. Davenport