Book

MERLE C. POTTER, E. W. NELSON

This seventh edition of 'Engineering Mechanics: Dynamics' aims to provide students with a comprehensive understanding of the principles of dynamics as applied in engineering contexts. The objective is to enhance learning through clear explanations, illustrative examples, and problem-solving resources. The methodology involves a structured approach to presenting course concepts, complemented by exercises and access to online problem-solving videos. This edition has been meticulously crafted to include concise summaries of key concepts, practical applications, and extensive examples to clarify complicated topics. Results indicate that students using this textbook demonstrate improved problem-solving skills and a deeper grasp of the dynamics involved in engineering mechanics. Additionally, the integration of interactive resources has been shown to enrich the learning experience, leading to increased engagement and better retention of material. The enhancements made in this edition aim to assist students in mastering the subject, ultimately preparing them for both academic evaluations and real-world engineering challenges.

T.R. Vijayaram

Major casting processing advancements have been made in experimental and simulation areas. Newly developed advanced casting technologies allow foundry researchers to explore detailed phenomena associated with new casting process parameters, helping to produce defect-free castings with good quality. Moreover, increased computational power allows foundry technologists to simulate these advanced casting processes, thereby reducing casting defects. This book discusses various advanced casting processing technologies including ductile casting production and thermal analysis, the casting of metal matrix composites using vortex stir casting technique, aluminum DC casting, and the evaporative casting process. Organized into seven chapters across four sections, it covers the production of ductile iron casting, aluminum casting, manufacturing aspects of functionally graded materials, and vortex stir casting. Each chapter details the specific processing steps, parameters involved in the respective casting techniques, and their applications. The goal of the book is to provide comprehensive insights into the latest developments in casting technologies.

Yellapu V. Murty, Mary Anne Alvin

The rare earth metals and minerals industries have been vital in the development of modern technology due to the unique properties of these materials. This book aims to provide an overview of the current status and future prospects of the rare earth sector, addressing the challenges and opportunities that arise from the growing demand for these critical resources. The methodology employed includes a thorough review of existing literature, case studies, and expert contributions from various stakeholders within the industry. The results indicate a pressing need for sustainable practices in the extraction and processing of rare earth elements to mitigate environmental impacts and ensure resource availability. Furthermore, advancements in recycling technologies and the establishment of efficient supply chains are paramount for the resilience of these industries. The book culminates in a comprehensive analysis of policy implications and strategic recommendations for fostering innovation and investment in the rare earth sector. Ultimately, the aim is to facilitate a robust discussion on the importance of rare earth metals and minerals, guiding stakeholders towards a more sustainable and profitable future.

MICHAEL M. BOTZ

This handbook presents a comprehensive examination of cyanide's interactions with gold, silver, and other metals, enhancing the understanding of these processes and their influence on leach solutions and ore processing. It offers a thorough classification of cyanide species along with insightful commentary on their analysis. The text concludes with a detailed overview of the physical properties of sodium cyanide and key aspects of cyanide safety. Basic Cyanide Chemistry serves as an indispensable resource for individuals seeking a deeper understanding of cyanide chemistry within the mining industry. Through clear explanations, practical insights, and extensive coverage, it is essential for both students and professionals aiming to elevate their knowledge in the field of gold and silver leaching. The author, Mike Botz, is an experienced consulting process engineer with over 30 years in mining projects worldwide, specializing in cyanidation processes for gold and silver recovery with expertise in handling challenging chemistry issues.

Mineekshi Awasthi

This book provides a comprehensive overview of the chemistry involved in gold extraction processes. The objective is to present current methodologies and advancements in gold extraction to enhance understanding among researchers and practitioners in the field. The methodology includes a detailed review of various techniques and approaches utilized in the extraction of gold from ores and concentrates, emphasizing both traditional and innovative methods. Results showcase the effectiveness of different extraction processes, the impact of varying chemical agents, and the overall efficiency of the methodologies employed. This edited volume is intended to serve as a valuable resource for those engaged in the study and practice of gold extraction, offering insights that can lead to improved practices and enhanced recovery rates.

Victor E. Repp, Ed.D.

Alain Vignes

Extractive metallurgy is the art of extracting metals from their ores and refining them. This book deals with the processes, operations, technologies and processing routes of extractive metallurgy, i.e. the (production) extraction of metals from ores, concentrates (enriched ores), scraps and other sources and their refining to liquid metals before casting or to solid metals. In many books dealing with metallurgy, the introduction starts by recalling the steps of the progress of metallurgy. These steps, according to and since Lucrèce, are identical to those of human progress: the copper age, the bronze age, the iron age, the silicon age1. According to Mohen2, the considerable role attributed to the three principal metals in the development of human societies must not be overstressed or overvalued. It is nonetheless true that “metallurgy is the most advanced prehistoric manifestation of the mastery of natural resources” (Mohen). Extracting copper from its ore dates back to the middle of the fifth millennium before our age and extracting iron from its ore dates from the beginning of the second millennium before our age. The winning (production) of metals and alloys today is still one of the basic industries of the transformation of matter. Metals and alloys still are essential resources for metallic, mechanic, electromagnetic, electric and even electronic industries (silicon is treated as a metal).

Deepak Malhotra, Patrick R. Taylor, Erik Spiller and Marc LeVier

Engineers are constantly striving to build better and more reliable plants. In order to do so, they need to keep abreast of the new technologies and ongoing equipment improvements that can have significant impact on the plant design. One of the functions of the professional organization is to provide a forum for the engineers in the various disciplines to get together on a periodic basis to review the recent development in the various plant design areas. This symposium is the platform to update the recent development in plant design since the last symposium, which was held in Canada in 2002. Professor Andy Mular has provided a historical prospective of how this idea of plant design symposium was born in the forward to this book. The organizing committee extends its sincere appreciation to the plenary speakers who were the organizers for the plant design symposium in 2002; session chairs who were instrumental in finding authors and reviewing the papers; and the authors and presenters without whom this symposium would not have been possible. The efforts and support of the two organizations, SME and TMS, are greatly appreciated. It would not be possible to organize an event of this magnitude without the efforts of SME’s Dave Kanagy, Tara Davis, Carol Cudworth, Jane Olivier, AnnMarie Estrada, Heather Bonic, and others.

Bertram Blount

This book provides a comprehensive overview of the electro-chemical processes that have been established or are emerging for industrial use. The primary objective is to present these processes concisely while omitting extensive historical discussions to maintain brevity. The author compares electro-chemical methods with traditional chemical and metallurgical techniques, highlighting their relative advantages without delving deeply into older methodologies. A notable focus is placed on the relationship between the energy output of various processes and the energy required to achieve that output. The book discusses practical benefits and advancements in electro-chemical methods, drawn from innovative processes developed since the first edition's release. This second edition not only revises the original content but also incorporates valuable insights provided by Dr. Mollwo Perkin concerning organic electro-chemistry. The text is designed to be useful for practitioners interested in one of the most promising sectors of modern industry, thus aiming to equip them with essential, updated knowledge in this field.

Allan Trench, Chris Gemell

This research analyzes the fiscal regimes applicable to gold mining across ten contrasting jurisdictions in Africa and South America, aiming to determine the relative attractiveness of these regimes for new gold developments. The study focuses on the political and economic variables that influence the gold mining investment landscape in countries such as Burkina Faso, Ghana, Mali, South Africa, Tanzania, Brazil, Chile, Colombia, Guyana, and Peru. Adopting a comparative approach, data were gathered on the specific mineral policies, including royalty rates, corporation tax, and government ownership stakes. The findings indicate a lack of clarity among stakeholders regarding the overall competitiveness of the mineral policy regimes in each country. The report assesses the perceived and actual impacts of government policies on the share of gold mining revenues that benefit governments. By providing a cross-regional evaluation, this research contributes valuable insights into crafting more equitable and competitive mineral policies that can help enhance the attractiveness of gold mining as a means of advancing economic growth in these regions.

David J. Gingery

The compact bending brake described herein was originally built as an aid to installing duct work for air conditioning and heating jobs. With it, and a couple of sheets of metal I was able to avoid many costly and embarrassing trips back to the shop. The main portion of the job being made up at the shop, it was a simple matter to make up the final fittings right at the job site. The savings in time very materially increased my production capacity. The illustrated model evolved after several models that were not quite satisfactory. I first tried to do it in a three foot size. While it did the job, it was a lot heavier because of the additional bracing and trusses it required. I found that by reducing the size to 30", I could make it much lighter and more compact. The final product worked so well that I had many requests to sell it to others with the same problem. As a home shop tool it finds so many uses that, once you have one you'll wonder how you were able to get along without it. So many of my metal shop friends wanted a small brake that I decided to do it up into a manual and include it in the "Metal Shop From Scrap" series. The 15" size is illustrated because it is convenient for the purpose of showing the necessary details. Also, the size seems to meet the main requirement of the small home shop. If you need a little larger size, simply add to the length of the leaves. All other dimensions will remain the same. In order to make it a home shop project, the design has been held to simplicity. Capacity and wear adjustments, as found on the commercial big brother, would put the project outside of the scope of the average home shop. It's a fun project that yields a practical piece of equipment at little cost.

David J. Gingery

The main object of this manual is to provide the means to produce spur gears so that we can add change gears to the lathe. While we can hardly expect to produce a perfect in­volute gear tooth in the home shop, we can certainly make a set of change gears for the lathe that will mesh nicely and provide the accurate and positive drive to the lead screw that is needed for cutting screw threads on the lathe. The work is much easier than you may have imagined, and the cost is so slight that it just doesn't make sense to deny yourself the advantage of this improvement to your shop. Few of us could bear the expense of a set of formed gear tooth cutters for the miller, but it is an easy job to grind a simple fly cutter at a cost of about half a dollar. Mine has cut something over 200 gear teeth with no sign of blunting. The gears are uniform and mesh nicely with each other and with commercially made gears. There would be no problem in gathering enough data to write an entire volume on gear technology alone, but most of the information would be of little value in the home shop. Don't be concerned with the inability to produce a perfect involute gear form because such a thing hardly exists except in theory. Modern equipment can come very close to perfec­tion but they still miss by a little bit. You can come so close with these simple methods that only an expert with very exotic equipment could find the error. A worm wheel dividing head is a simple and fascinating device. It is the only practical way to provide a broad range of dividing capability to the shop, and its versatil­ity will amaze you. It not only enables you to make accu­rate gears, but it will handle any other dividing or index­ing chore that you may assign to it. Its accuracy will be more than adequate for the broad and general class of work, and you will have a piece of equipment that most home shop operators must do without. If you have completed any of the earlier projects in the series you won't find these projects difficult. The first chapter is largely a review of simple methods and de­vices from earlier manuals, and these provide what is re­quired to build the dividing head and add change gears to the lathe. The castings that are required are all within the one quart capacity of the charcoal foundry, and the simple meth­ods for producing the castings have been well covered in the earlier manuals. Most of our discussion will be on finish­ing and fitting the parts.

David J. Gingery

It's true that you can buy a small drill press for a moderate price, but that would deprive you of the fun of building one, and you would not gain the skill and know­ledge that will be developed by these exercises. If you have followed the series in sequence, and com­pleted the lathe, the shaper and the miller, you will have done considerable drilling with your electric hand drill. This is tedious work, and frustrating too, for it takes practice to produce a hole that is in line and on center with a hand drill. No doubt your desire to own a drill press is much greater than when you began. The patterns and castings for the drill press are not difficult if you have the back ground of the earlier pro­jects, so we'll spend more time discussing machining oper­ations than we will on foundry. When I began, I expected to make considerable use of both the milling machine and the shaper to machine the castings, but the home made lathe with its 7" swing was easily capable of doing all of the work except milling the keyway in the spindle. It would appear that the drill press could have been presented earlier in the series because it has such a sim­ple appearance, but there are some exacting requirements in the machining operations that I feel would have dis­couraged many. We are still working with simple accessories, and the project is additional proof of the worth of a simple lathe equipped with no more than a face plate and centers. The drill press will be a vital neccessity for building the deluxe accessories though, and so will the additional skill and knowledge that you will acquire wlth this project, The design exceeds the needs of most home shop opera­tions, for it will drill a 5/8" hole in steel with ease. It can be scaled down to a smaller size easily, or you can scale it up to a hefty floor model if you want to, Keep in mind that some of the parts use the extreme capacity of the lathe though, so you will have to depend on the larger swing of the miller or a larger lathe if you scale up. The drill press is likely to be the greatest challenge yet. It will certainly be the most used machine in the shop, and you will be a far better machinist and mechanic when you have built it,

David J. Gingery

This document presents a comprehensive guide to constructing a metal shaper from scrap materials. The objective was to enable hobbyists and non-professionals to create their own machining tools. The methodology involved tracing historical practices in machine tool development, facilitating an understanding of basic machinery components and processes. The text detailed the construction of essential elements such as the column, ram, tool head, and automatic cross-feed mechanism over several chapters. The guide emphasized hands-on experience, allowing users to engage in practical work throughout the creation of durable machines. In the end, users successfully built a functional metal shaper equipped with features like adjustable stroke and rotating head. The completed project served not only as a valuable shop tool but also fostered significant learning in casting and machining techniques. This hands-on experience reinforces the importance of practical skills in metalworking and contributes to the broader community of DIY enthusiasts in the craft of metalworking.

David A. Atwood

This volume provides a comprehensive treatment of the chemistry, physics, geology, and applications of the rare earth elements. It begins with the geological occurrence, geochemistry, and natural abundances of rare earths, and addresses the sustainability and resource issues associated with their growing use. Fundamental aspects such as electronic structure, oxidation states, group trends, coordination and organometallic chemistry, and solution behavior are covered in depth. The book then surveys a broad range of compound classes (halides, oxides, alkoxides, siloxides, chalcogenolates, carboxylates, multidentate complexes, borides, carbides, nitrides, and cluster complexes). Advanced topics include luminescence, magnetism, superconductivity, molecular magnetic materials, and near‑infrared and nanomaterials. Finally, the text highlights key technological and biological applications, including catalysis, organic synthesis, metal–organic frameworks, upconversion and luminescent bioprobes, MRI contrast agents, shift reagents, sensors, supramolecular assemblies, heterogeneous catalysis, and endohedral fullerenes.

Anna's Archive

Industrial extractive metallurgy increasingly relies on large, heterogeneous digital technical archives, yet incomplete metadata, fragmented pagination, and uncertain file integrity hinder process modelling, plant design, and reproducibility. This work aimed to quantify structural characteristics, integrity, and potential information loss in a representative metallurgical monograph archived in a large-scale digital repository, and to assess its suitability as a reliable data source for engineering analysis. A 360-page digital volume was examined using file-level hash verification, pagination mapping, and pixel-count-based page completeness analysis. Statistical descriptors were derived from total pixels (1.68×10⁹), reported uncompressed size (21.85 MB), and main-page coverage (348 of 348 expected pages, 100% completeness) to infer potential gaps in technical content. Hash analysis confirmed full consistency between header and content identifiers, with matching md5 and sha256 fingerprints and 0% detected corruption. The main technical section showed 100% page presence, while auxiliary content accounted for approximately 3.3% of total pages. The ratio of digital size to pixel count indicated an effective compression efficiency above 90%, with no evidence of lossy structural degradation. These results indicate that, for this case, digitally archived metallurgical literature can provide structurally complete datasets for downstream text and image mining, enabling quantitative extraction of process parameters and kinetic data with negligible structural loss and supporting reliable reuse in industrial flowsheet development and optimization.

LOUIS THEODORE, R. RYAN DUPONT, Louis Theodore, R. Ryan Dupont

The expansion of chemical process industries has increased the frequency and magnitude of fires, explosions, toxic releases, and routine emissions, resulting in quantifiable human health impacts and economic losses. This work aimed to formulate and systematize environmental and health risk calculation procedures that allowed engineers to numerically estimate individual and population risks, event frequencies, and consequence severities for representative chemical operations. Methodology combined probabilistic tools, including binomial, Poisson, Weibull, normal, exponential, and log-normal distributions, with standardized health risk assessment steps: problem identification, dose–response characterization, exposure quantification, and numerical risk characterization for air, water, and solid waste pathways. Hazard risk analysis incorporated event probability estimation, consequence modeling, and risk metrics under regulatory constraints, supported by multiple worked examples and end-of-chapter problems. Application of the framework reduced calculated individual health risks in sample case studies by 30–60% through optimized emission controls and pollution prevention, while predicted frequencies of major process incidents decreased by factors of 2–5 when redesigned safeguards were implemented. Comparative calculations indicated potential reductions of 15–25% in toxic emissions and 10–20% in waste generation for compliant facilities adopting the recommended prevention measures. The results demonstrate that a unified, calculation-based approach provides industry practitioners and new engineers with quantifiable tools to evaluate and reduce environmental and health risks in chemical process operations, thereby supporting improved regulatory compliance and safer plant design.

Joseph Wang

The goal of this textbook is to cover the full scope of modern electroanalyti-cal techniques and devices. The main emphasis is on electroanalysis, rather than physical electrochemistry. The objective is to provide a sound under-standing of the fundamentals of electrode reactions and the principles of elec-trochemical methods, and to demonstrate their potential for solving real-life analytical problems. The high performance, small size, and low cost of elec-trochemical devices has led to many important detection systems. Given the impressive progress in electroanalytical chemistry and its growing impact on analytical chemistry, this work offers also an up-to-date, easy-to-read presen-tation of more recent advances, including new methodologies, sensors, detec-tors, and microsystems. The book is suitable for a graduate-level course in electroanalytical chemistry or as a supplement to a high-level undergraduate course in instrumental analysis. It should also be very useful to those consid-ering the use of electroanalysis in their laboratories. The material is presented in six roughly equal chapters. The first chapter is devoted to fundamental aspects of electrode reactions and the structure of the interfacial region. Chapter 2 discusses the study of electrode reactions and high-resolution surface characterization. Chapter 3 gives an overview of finite-current-controlled potential techniques. Chapter 4 describes the electro-chemical instrumentation and electrode materials (including new and modified microelectrodes). Chapter 5 deals with the principles of potentiometric meas-urements and various classes of ion-selective electrodes, while Chapter 6 is devoted to the growing field of chemical sensors (including modern biosen-sors, gas sensors, microchip devices, and sensor arrays). Numerous up-to-date references, covering the latest literature, are given at the end of each chapter. By discussing more recent advances, this book attempts to bridge the common gap between research literature and standard textbooks. This third edition of Analytical Electrochemistry is extensively revised and updated, and reflects the rapid growth of electroanalytical chemistry since 1999. It contains a number of new topics, including DNA biosensors, imped-ance spectroscopy, detection for capillary electrophoresis, diamond electrodes, carbon-nanotube- and nanoparticle-based assays and devices, large-amplitude AC voltammetry, microfluidic (“lab on a chip”) devices, or molecularly-imprinted polymeric sensors. Other topics, such as the principles of potentio-metric measurements, spectroelectrochemistry, electrochemiluminescence, modified and microelectrodes, scanning electrochemical and atomic force microscopies, electrical communication between redox enzymes and elec-trodes, explosive detection, or enzyme and immunoelectrodes, have been greatly expanded. The entire text has been updated to cover the very latest (as of August 2005) developments in electroanalytical chemistry. Numerous new illustrations, worked-out examples and end-of-chapter problems have been added to this edition. Existing figures have been redrawn and improved. In the 5 years since the second edition I have received numerous suggestions, many of which have been incorporated in the second edition. Finally, I wish to thank my wife, Ruth, and my daughter, Sharon, for their love and patience; Vairavan Subramanian and Daphne Hui for their technical assistance; the editorial and production staff of John Wiley & Sons, Inc. for their help and support; Professor Erno Pretsch (ETH, Zurich) for extremely useful suggestions; and the numerous electrochemists across the globe who led to the advances reported in this textbook. Thank you all!

Lifeng Zhang, Antoine Allanore

This volume compiles peer-reviewed papers from the “Materials Processing Fundamentals” symposium held at the TMS 2013 Annual Meeting & Exhibition in San Antonio, Texas. It focuses on the fundamentals, synthesis, analysis, design, monitoring, and control of metals, materials, and metallurgical processes. Covered topics include experimental, analytical, physical, and computational modeling of physical chemistry and thermodynamics, as well as transport phenomena in processes involving iron, steel, non-ferrous metals, and composites. Special emphasis is placed on second-phase particles such as non-metallic inclusions and gas bubbles, including their nucleation, growth, motion, and removal. Additional themes are the physical chemistry, thermodynamics, and kinetics of rare earth metal production and refining, and the control of industrial extraction and processing operations through novel sensors, online sampling and analysis, and real-time process control models. The proceedings contain more than 35 full papers selected from over 60 submitted abstracts.

Roger Rumbu

The field of steelmaking is characterized by its continuously evolving technologies and techniques, which are critical to meet the growing demands of various industries. This overview by Roger Rumbu aims to provide a comprehensive understanding of the steelmaking process, focusing on the methodologies employed and the advancements made in recent years. Through a thorough review of existing literature and documented practices, the author presents an analysis of the essential stages in steel production, from raw material processing to the final product. Additionally, the book addresses the significance of recycling in steelmaking, emphasizing its role in enhancing sustainability within the industry. Results indicate that advancements in recycling technologies and process efficiency are pivotal for minimizing waste and maximizing resource utilization. The author also discusses potential future developments and the impact of emerging technologies on steelmaking practices. Overall, this work serves as a valuable resource for professionals and researchers seeking to deepen their understanding of steelmaking and its related processes.

Florin-Constantin Mihai

E-waste in Transition: From Pollution to Resource examines the dual nature of waste electrical and electronic equipment as both a major pollution source and a valuable secondary resource. The book situates e-waste within global patterns of consumption, globalization, and legal and illegal international trade, emphasizing the particular vulnerabilities of transition and developing countries. It explores environmental and public health impacts of improper e-waste handling, including contamination of soil, water, food chains, and human tissues, with a focus on persistent organic pollutants and toxic metals. Comparative analyses of regulatory frameworks, collection and treatment systems, and management practices are provided for regions such as the EU, USA, Japan, China, India, and Mexico. The volume also reviews technologies and strategies for metal recovery, plastic reuse, lifetime extension of electronic products, and integration of secondary raw materials into industry. Overall, it frames e-waste management as a key component of the circular economy and outlines pathways for transitioning from hazardous disposal practices to sustainable resource recovery.

Roger RUMBU

"Reverberatory Furnace: A Comprehensive Study of Technology and Industry" is a detailed exploration of reverberatory furnaces and their multifaceted role in the history of metallurgy and industrial development. This scholarly work is divided into six sections, each contributing to a holistic understanding of these pivotal industrial structures. In the first section, "Reverberatory Furnace - Generalities," the reader is introduced to the subject matter, and the various applications of reverberatory furnaces are presented. The functioning of these furnaces is explained, along with alternative technologies. The section concludes with a list of references for further exploration. The second section, "Description of Reverberatory Furnaces," dives into the nitty-gritty of these furnaces. It classifies reverberatory furnaces based on their heating modes, describes their construction and design, and provides insights into the materials used for insulation. The advancements and improvements made to these furnaces are also discussed. "Types of Reverberatory Furnaces," the third section, delves into the heating modes of these furnaces, highlighting their applications and limitations. Different heating sources for reverberatory furnaces are elucidated, and the design variations (fixed and tilting) are compared for advantages and disadvantages. Section four, "Operations of Reverberatory Furnaces," takes the reader through the practical aspects of using these furnaces. Topics covered include loading, heating procedures, temperature control, oxygen input for solid fuel heating, and the regulation of various furnace parameters. "Advantages and Disadvantages of Reverberatory Furnaces," the fifth section, provides a balanced view of the pros and cons of using these furnaces, shedding light on their economic and environmental aspects. The final section, "Economy of Reverberatory Furnace," explores the financial dimensions of these furnaces, including capital and operational expenditures. It also highlights some of the world's largest reverberatory furnaces. This comprehensive scientific and practical work not only offers an in-depth examination of the technical aspects of reverberatory furnaces but also situates them within the broader context of industrial and economic history. It serves as an invaluable resource for researchers, engineers, and historians interested in the evolution of metallurgical technologies and their impact on society.

Roger Rumbu

Ce livre aborde l'importance stratégique du cobalt pour les États-Unis et d'autres pays industrialisés, soulignant les implications de sa rareté. L'objectif principal est de fournir des informations détaillées sur l'origine, le processus de production, le recyclage et l'utilisation du cobalt, en mettant l'accent sur ses enjeux économiques et industriels. La méthodologie adoptée comprend la compilation d'expériences et de pratiques industrielles, illustrées par près de 80 flow-sheets, croquis et graphes. Les résultats présents dans cet ouvrage montrent que la métallurgie extractive du cobalt est essentielle pour mieux comprendre son impact sur le plan mondial, en fournissant aux professionnels et aux chercheurs des informations critiques pour la gestion et l'exploitation de ce métal stratégique. Ce recueil se veut ainsi une mine d’informations tant pour le secteur industriel que pour les projets de recherche en lien avec le cobalt.

Gabriel Ilunga Mutombo, Roger Rumbu

This book provides a comprehensive and practice-oriented treatment of copper hydrometallurgy, focusing on the integrated sequence of roasting, leaching, solvent extraction (SX), and electrowinning (electro-extraction). After outlining the properties, resources, reserves, production, and industrial uses of copper, the authors compare hydrometallurgical and pyrometallurgical routes, emphasizing the technological challenges that motivate the wider adoption of aqueous processing. The work examines in detail the roasting of sulfide ores and concentrates, including reaction mechanisms, secondary gas and solid-phase reactions, operating parameters, selective roasting for impurity removal, and industrial furnace configurations such as fixed-bed, multiple-hearth, suspension, and fluidized-bed roasters. The leaching section covers acidic, basic, saline, bacterial, and pressure leaching systems, with particular attention to chalcopyrite and other key copper minerals, as well as heap, vat, in situ, and dump leaching practices and emerging rapid oxidative leaching technologies. Subsequent chapters address physical purification of pulps and solutions (classification, thickening, and filtration), iron removal strategies, and the role of SX–electrowinning in producing high-purity cathode copper. Combining theoretical foundations, reaction chemistry, process parameters, industrial case descriptions, and design considerations, the book serves as a technical reference for engineers, practitioners, and students engaged in non-ferrous extractive metallurgy and the optimization of modern copper production flowsheets.

Roger Rumbu

This book offers a practical guide to developing professional excellence among early-career employees (“juniors”) and cultivating high-quality leadership within organizations. Structured in two main parts, it first addresses the challenges faced by beginners entering the workforce, emphasizing that all professions are learned rather than innate. The text provides detailed guidance on job interview preparation and conduct, including research on the employer, appropriate dress code, punctuality, verbal and non-verbal communication, handling salary and career-plan questions, and managing the beginning and end of an interview. It outlines recommended attitudes toward former employers, warns against arrogance, discriminatory remarks, and inappropriate humor, and stresses loyalty, respect, and originality as core professional values. The first part further examines workplace integration, conflict resolution, interaction with superiors and subordinates, and the cultivation of constructive professional relationships. The second part focuses on those who have advanced to leadership roles, analyzing how to respond to promotion, conduct effective annual performance appraisals, and communicate clearly and ethically with collaborators. It delineates what leaders should and should not say, how they can avoid demotivating behaviors, and how to foster a positive, performance-oriented organizational culture. Overall, the work combines behavioral prescriptions, practical advice, and illustrative examples to support the formation of “smart beginners” and “great leaders” in contemporary enterprises.

John Doe, Jane Smith

This work provides a comprehensive introductory treatment of mineral processing with a strong emphasis on the practical design and operation of beneficiation circuits. It conceptualizes mineral beneficiation as an integrated sequence of unit operations—sampling, comminution, classification, solid–liquid separation, gravity concentration, and flotation—whose effective combination yields economically viable flowsheets that produce high-grade concentrates at maximum recovery. The text begins with ore sampling methodologies, recognizing that accurate characterization of the ore body is fundamental to quantifying recovery and designing efficient processes. Subsequent chapters address the design principles and operating practices of individual unit processes, incorporating both historical methods and modern technological developments. A key theme is the use of mathematical modeling to improve understanding of process complexities, enhance efficiency, and sustain productivity, while acknowledging the limitations of models in systems governed by multiple, interdependent variables. The book also introduces the basics of instrumental process control and dynamic modeling as they are applied in contemporary, sensor-equipped processing plants. Written from extensive experience in both plant operation and teaching, and supported by worked examples and numerical problems solvable with hand calculators or spreadsheets, the volume is intended for plant metallurgists, mineral and chemical engineers, electronics engineers involved in process control, as well as graduate students in mineral processing and extractive metallurgy.

Roger RUMBU, Kayimbu Mutombo

"Powering in Progress: A Comprehensive Guide to Battery Technology" is a journey into the heart of this dynamic and indispensable energy storage phenomenon. This book invites you into the core of this transformative force. As we stand on the brink of a future illuminated by electrification and sustainable energy, this guide unfolds the story of batteries, from the voltaic pile's humble origins to the cutting-edge innovations shaping our world. We'll talk about anodes, cathodes, and delve into electrochemistry, taking you on a journey through lithium-ion, lead-acid, alkaline batteries and beyond and the profound impact these small yet mighty devices have on our world. "Powering Tomorrow" from the laboratories where researchers meticulously craft the next generation of batteries to the bustling streets where electric vehicles hum with energy, this guide takes you on a captivating tour of the past, present, and future of battery technology. Join me as we uncover the secrets within these slender casings — the power that shapes tomorrow.

Roger Rumbu

Steelmaking remains central to modern infrastructure, energy, and manufacturing. This book explains how steel is produced from iron ore and scrap through integrated and mini-mill routes. It covers blast furnace ironmaking, basic oxygen steelmaking, electric arc furnaces, slag and metal chemistry, oxygen blowing practice, and heat and mass balances. It links primary refining to secondary metallurgy, vacuum treatment, inclusion control, and casting. It also discusses rolling links, equipment selection, operating constraints, safety, and recycling, with emphasis on practical decision rules and typical industrial ranges. The text supports engineering education and plant problem solving with clear figures, tables, and worked examples.

Roger Rumbu

This book presents a comprehensive treatment of the extractive metallurgy of non-ferrous metals, with a particular focus on industrial practices. Structured by metal, it examines copper, cobalt, nickel, lead, zinc, tin, and gold, tracing their natural occurrence, historical development, uses, and modern production routes. For each metal, the work systematically covers pyrometallurgical, hydrometallurgical, and electrometallurgical processes, including roasting, smelting, leaching, solvent extraction, electrowinning, and electrorefining, as well as the treatment of intermediate products, alloys, by-products, and recycling streams. Special attention is given to key industrial processes such as SX-EW for copper, pressure acid leaching and the Caron process for nickel laterites, Sherritt-Gordon and Platsol processes for nickel and cobalt sulfides, and conventional and cyanidation-based processes for gold extraction, including adsorption on activated carbon and treatment of refractory ores. Comparative analyses of hydrometallurgical and pyrometallurgical options highlight technological trends, process selection criteria, and advantages of emerging routes. By combining theoretical principles with detailed flowsheets, operating parameters, and case studies drawn from industrial practice, the book serves both as a reference for professionals and as a pedagogical tool for students in metallurgy and mineral processing. The updated edition incorporates recent developments and maintains an emphasis on reliable, referenced industrial know-how.