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| extracting gold from electronics: The Recovery Of Gold From Secondary Sources Syed Sabir, 2016-06-29 New discoveries of the properties of gold at a nanoscale, and its effective use in modern technologies, have been driving a virtual 'gold rush'. Depleting natural resources has meant that the recovery of gold continues to grow in importance and relevance.The Recovery of Gold from Secondary Sources analyses the most advanced technology in gold recovery and recycling from spent sources of mobile phones, unwanted electronic equipment and waste materials. State-of-the-art techniques of hydrometallurgical and bio-metallurgical processing, leaching, cementing, adsorbing and separation through bio-sorbents are all described in detail, providing a guide for students and researchers. Discussion of environmentally friendly methods of recovery are presented, in order to provide modern-day alternatives to previous techniques. For those interested in the study of gold recovery this book gives a comprehensive overview of current recovery, making it the ultimate source of information for students, researchers, chemists, metallurgists, environmental scientists and electronic waste recovery experts. |
| extracting gold from electronics: Gold Refining for the Amateur Chemist Nicholas Nickerson, 2014-09-04 This is a book designed for the home chemist. Are you tired of big refineries taking half of your metals? Then the processes described in this book are for you. You will learn detailed ways to recover and refine your own precious metals at home. |
| extracting gold from electronics: Refining Precious Metal Wastes, Gold--silver--platinum Metals Calm Morrison Hoke, 1978 |
| extracting gold from electronics: Recovery and Refining of Precious Metals C.W. Ammen, 1997-07-31 This book is the product of 50+ years of hands-on physiochemical work with both ferrous and nonferrous metals and with the metallurgy of refining, extracting, and casting. Its purpose is to cover the various methods of recovery and refining of precious metals. Both primary sources (placer gold, black sand, and ores) and secondary sources (scrap jewelry, electronic scrap, old films, buffings, spent plating and stripping solutions, catalytic automobile converters, and old eyeglass frames) are covered. The information contained in this volume is very basic and is intended for hands-on application and use. It is for nonchemist and chemist alike. I will not discuss the mathematical formulas for the various chemical reactions that take place-I leave them to the reader who wants to increase his working knowledge and understanding of chemistry. There are many courses offered in chemistry and extractive metallurgy, as well as a number of books available for self-study. The purpose of this book is to teach you how to perform various extractive, refining, and testing operations on precious metals (in various forms and states), with a resulting end product. You will learn how to perform operations in assaying and extraction, qualitative analysis, quantitative analysis, testing, classifying, and concentration-some of a purely mechanical nature, some of a chemical nature. |
| extracting gold from electronics: Waste Electrical and Electronic Equipment Recycling Francesco Vegliò, Ionela Birloaga, 2018-05-18 Water Electrical and Electronic Equipment Recycling: Aqueous Recovery Methods provides data regarding the implementation of aqueous methods of processing of WEEEs at the industrial level. Chapters explore points-of-view of worldwide researchers and research project managers with respect to new research developments and how to improve processing technologies. The text is divided into two parts, with the first section addressing the new research regarding the hydrometallurgical procedures adopted from minerals processing technologies. Other sections cover green chemistry, bio-metallurgy applications for WEEE treatment and the current developed aqueous methods at industrial scale. A conclusion summarizes existing research with suggestions for future actions. - Provides a one-stop reference for hydrometallurgical processes of metal recovery from WEEE - Includes methods presented through intended applications, including waste printed circuit boards, LCD panels, lighting and more - Contains suggestions and recommendations for future actions and research prospects |
| extracting gold from electronics: Extract Gold Norman Swasey, 2022-02-24 |
| extracting gold from electronics: Illustrated Guide to Home Chemistry Experiments Robert Bruce Thompson, 2012-02-17 For students, DIY hobbyists, and science buffs, who can no longer get real chemistry sets, this one-of-a-kind guide explains how to set up and use a home chemistry lab, with step-by-step instructions for conducting experiments in basic chemistry -- not just to make pretty colors and stinky smells, but to learn how to do real lab work: Purify alcohol by distillation Produce hydrogen and oxygen gas by electrolysis Smelt metallic copper from copper ore you make yourself Analyze the makeup of seawater, bone, and other common substances Synthesize oil of wintergreen from aspirin and rayon fiber from paper Perform forensics tests for fingerprints, blood, drugs, and poisons and much more From the 1930s through the 1970s, chemistry sets were among the most popular Christmas gifts, selling in the millions. But two decades ago, real chemistry sets began to disappear as manufacturers and retailers became concerned about liability. ,em>The Illustrated Guide to Home Chemistry Experiments steps up to the plate with lessons on how to equip your home chemistry lab, master laboratory skills, and work safely in your lab. The bulk of this book consists of 17 hands-on chapters that include multiple laboratory sessions on the following topics: Separating Mixtures Solubility and Solutions Colligative Properties of Solutions Introduction to Chemical Reactions & Stoichiometry Reduction-Oxidation (Redox) Reactions Acid-Base Chemistry Chemical Kinetics Chemical Equilibrium and Le Chatelier's Principle Gas Chemistry Thermochemistry and Calorimetry Electrochemistry Photochemistry Colloids and Suspensions Qualitative Analysis Quantitative Analysis Synthesis of Useful Compounds Forensic Chemistry With plenty of full-color illustrations and photos, Illustrated Guide to Home Chemistry Experiments offers introductory level sessions suitable for a middle school or first-year high school chemistry laboratory course, and more advanced sessions suitable for students who intend to take the College Board Advanced Placement (AP) Chemistry exam. A student who completes all of the laboratories in this book will have done the equivalent of two full years of high school chemistry lab work or a first-year college general chemistry laboratory course. This hands-on introduction to real chemistry -- using real equipment, real chemicals, and real quantitative experiments -- is ideal for the many thousands of young people and adults who want to experience the magic of chemistry. |
| extracting gold from electronics: The Chemistry of Gold Extraction John Marsden, Iain House, 2006 Extensively revised and updated, this edition provides the broad base of knowledge required by all working in the gold extraction and gold processing industries. It bridges the gap between research and industry by emphasizing practical applications of chemical principles and techniques. |
| extracting gold from electronics: Waste Kate O'Neill, 2019-09-04 Waste is one of the planet’s last great resource frontiers. From furniture made from up-cycled wood to gold extracted from computer circuit boards, artisans and multinational corporations alike are finding ways to profit from waste while diverting materials from overcrowded landfills. Yet beyond these benefits, this “new” resource still poses serious risks to human health and the environment. In this unique book, Kate O’Neill traces the emergence of the global political economy of wastes over the past two decades. She explains how the emergence of waste governance initiatives and mechanisms can help us deal with both the risks and the opportunities associated with the hundreds of millions – possibly billions – of tons of waste we generate each year. Drawing on a range of fascinating case studies to develop her arguments, including China’s role as the primary recipient of recyclable plastics and scrap paper from the Western world, “Zero-Waste” initiatives, the emergence of transnational waste-pickers’ alliances, and alternatives for managing growing volumes of electronic and food wastes, O’Neill shows how waste can be a risk, a resource, and even a livelihood, with implications for governance at local, national, and global levels. |
| extracting gold from electronics: The Extractive Metallurgy of Gold John C. Yannopoulos, 2012-12-06 The history of gold begins in antiquity. Bits of gold were found in Spanish caves that were used by Paleolithic people around 40,000 B.C. Gold is the child of Zeus, wrote the Greek poet Pindar. The Romans called the yellow metal aurum (shining dawn). Gold is the first element and first metal mentioned in the Bible, where it appears in more than 400 references. This book provides the most thorough and up-to-date information available on the extraction of gold from its ores, starting with the miner alogy of gold ores and ending with details of refining. Each chapter con cludes with a list of references including full publication information for all works cited. Sources preceded by an asterisk (*) are especially recom mended for more in-depth study. Nine appendices, helpful to both students and operators, complement the text. I have made every attempt to keep abreast of recent technical literature on the extraction of gold. Original publications through the spring of 1989 have been reviewed and cited where appropriate. This book is intended as a reference for operators, managers, and designers of gold mills and for professional prospectors. It is also designed as a textbook for extractive metallurgy courses. I am indebted to the Library of Engineering Societies in New York, which was the main source of the references in the book. The assistance of my son, Panos, in typing the manuscript is gratefully acknowledged. |
| extracting gold from electronics: E-Waste in Transition Florin-Constantin Mihai, 2016-06-29 E-waste management is a serious challenge across developed, transition, and developing countries because of the consumer society and the globalization process. E-waste is a fast-growing waste stream which needs more attention of international organizations, governments, and local authorities in order to improve the current waste management practices. The book reveals the pollution side of this waste stream with critical implications on the environment and public health, and also it points out the resource side which must be further developed under the circular economy framework with respect to safety regulations. In this context, complicated patterns at the global scale emerge under legal and illegal e-waste trades. The linkages between developed and developing countries and key issues of e-waste management sector are further examined in the book. |
| extracting gold from electronics: Investing in Gold: The Essential Safe Haven Investment for Every Portfolio Jonathan Spall, 2008-12-01 Can you afford not to buy gold? As many investors know, gold is a “safe-haven” asset that can actually increase in value during stock market slides and times of recession. But what else do you really know about this commodity? Are you taking full advantage of it? Do you know how to work it into your overall investment strategy? This detailed tutorial provides you with a comprehensive understanding of gold, from mine to market. Jonathan Spall, a 25-year veteran of the metals market, explains everything you'll need to know for making gold a profitable part of your investment strategy. Investing in Gold gives you an inside look at how the precious metal is mined, refined, traded, and priced, along with valuable insight into gold's unique position in the marketplace. Spall explores such topics as: Simple and complex gold trading processes The pivotal role central banks play in the gold market Gold exchange traded funds (ETFs) How spot gold is traded Why gold mining companies have traditionally hedged and why they no longer do so Strategies for investing in the retail market Spall provides an extensive glossary of terms you'll need to know, and he debunks various myths regarding this market, including the Fed's supposed scheme to keep gold prices artificially low during the 1990s. The effects of global economic growth, the weakened dollar, the credit crunch, and the recent creation of enormous funds each affect the gold market; put them together and they add up to potential profits gold investors have never before dreamed of. Gold is a surprisingly small market. When you learn how to navigate it, the potential for excellent rewards becomes evident. |
| extracting gold from electronics: Going for Gold Jack H. Morris, 2010-05-10 Details how Newmont Mining revolutionized the gold mining industry and remains the second largest gold miner in the world Jack H. Morris asserts that Newmont is the link between early gold mining and today’s technology-driven industry. We learn how the company’s founder and several early leaders grew up in gold camps and how, in 1917, the company helped finance South Africa’s largest gold company and later owned famous gold mines in California and Colorado. In the 1960s the company developed the process to capture “invisible gold” from small distributions of the metal in large quantities of rock, thereby opening up the rich gold field at Carlin, Nevada. Modern gold mining has all the excitement and historic significance of the metal’s colorful past. Instead of panning for ready nuggets, today’s corporate miners must face heavy odds by extracting value from ores containing as little as one-hundredth of an ounce per ton. In often-remote locations, where the capital cost of a new mine can top $2 billion, 250-ton trucks crawl from half mile deep pits and ascend, beetle-like, loaded with ore for extraction of the minute quantities of gold locked inside. Morris had unique access to company records and the cooperation of more than 80 executives and employees of the firm, but the company exercised no control over content. The author tells a story of discovery and scientific breakthrough; strong-willed, flamboyant leaders like founder Boyce Thompson; corporate raiders such as T. Boone Pickens and Jimmy Goldsmith; shakedowns by the Indonesian government and monumental battles with the French over the richest mine in Peru; and learning to operate in the present environmental regulatory climate. This is a fascinating story of the metal that has ignited passions for centuries and now sells for over $1,000 an ounce. |
| extracting gold from electronics: Digital Rubbish Jennifer Gabrys, 2013-04-26 This is a study of the material life of information and its devices; of electronic waste in its physical and electronic incarnations; a cultural and material mapping of the spaces where electronics in the form of both hardware and information accumulate, break down, or are stowed away. Where other studies have addressed digital technology through a focus on its immateriality or virtual qualities, Gabrys traces the material, spatial, cultural and political infrastructures that enable the emergence and dissolution of these technologies. In the course of her book, she explores five interrelated spaces where electronics fall apart: from Silicon Valley to Nasdaq, from containers bound for China to museums and archives that preserve obsolete electronics as cultural artifacts, to the landfill as material repository. Digital Rubbish: A Natural History of Electronics describes the materiality of electronics from a unique perspective, examining the multiple forms of waste that electronics create as evidence of the resources, labor, and imaginaries that are bundled into these machines. Ranging across studies of media and technology, as well as environments, geography, and design, Jennifer Gabrys draws together the far-reaching material and cultural processes that enable the making and breaking of these technologies. |
| extracting gold from electronics: Unscrewed Ed Sobey, 2011-06 Perfect for the do-it-yourselfer, this handy guide to household electronics gives the weekend workbench enthusiast a multitude of ideas on how to salvage valuable parts from old electronics and turn them into useful gadgets once more. This handbook is loaded with information and helpful tips for disassembling old and broken electronics. Each of the more than 50 deconstruction projects includes a treasures cache of the components to be found, a required tools list, and step-by-step instructions with photos on how to safely extract the working components. Projects include building a desk lamp from an old flatbed scanner, a barbeque supercharger from a Dustbuster impeller, and a robot from the gears, rollers, and stepper motor found in an ink-jet printer. Now, old VHS players and fax machines will find new life with these fun ideas. |
| extracting gold from electronics: Linkages of Sustainability T. E. Graedel, E. van der Voet, 2010 In this book, experts engage in an extended dialogue arguing for a comprehensive view of sustainability. They emphasize the constraints imposed by the relationships among the components, for example, how the need for clean, easily accessible water intersects with the need for the energy required to provide it. This book urges a transformation in the way we view sustainability, a transformation that is necessary if we are to plan responsibly for a more sustainable world.--[book jacket]. |
| extracting gold from electronics: WEEE Recycling Alexandre Chagnes, Gérard Cote, Christian Ekberg, Mikael Nilsson, Teodora Retegan, 2016-07-26 WEEE Recycling: Research, Development, and Policies covers policies, research, development, and challenges in recycling of waste electrical and electronic equipment (WEEE). The book introduces WEEE management and then covers the environmental, economic, and societal applications of e-waste recycling, focusing on the technical challenges to designing efficient and sustainable recycling processes—including physical separation, pyrometallurgical, and hydrometallurgical processes. The development of processes for recovering strategic and critical metals from urban mining is a priority for many countries, especially those having few available ores mining. - Describes the two metallurgical processes—hydro- and pyro-metallurgy—and their application in recycling of metals - Provides a life cycle analysis in the WEEE recycling of metals - Outlines how to determine economic parameters in the recycling of waste metals - Discusses the socio economic and environmental implication of metal recycling |
| extracting gold from electronics: Candide Voltaire, 2024-09-09 Venture into the eerie and enigmatic with Ambrose Bierce’s collection of supernatural tales, Can Such Things Be. This gripping anthology explores the boundaries of reality with stories that delve into the realms of the bizarre and the uncanny. What if the most unsettling experiences were not just figments of imagination but genuine encounters with the supernatural? Bierce’s masterful storytelling will leave you questioning the line between reality and the supernatural, challenging your perceptions of what is possible. With its chilling narratives and unsettling twists, this collection is perfect for readers who relish spine-tingling tales and the exploration of the unknown. Ideal for fans of classic horror and supernatural fiction. Are you prepared to confront the unsettling mysteries of Can Such Things Be and uncover the dark secrets that lie beyond the ordinary? Embrace the unknown—purchase Can Such Things Be today and dive into a world of supernatural intrigue and suspense! |
| extracting gold from electronics: The Little Book of Gold Erik Hanberg, 2011-06-26 The Little Book of Gold is dedicated to helping small (and very small) non-profits unlock their fundraising potential. Avoid common pitfalls and get tips on proven methods that work. This short guide helps new Executive Directors, active board chairs, and other key staff in charge of fundraising to learn the basics of professional and sustainable fundraising. Geared specifically for non-profits with small and very small budgets (a few hundred thousand dollars a year down to the smallest budgets). Revised and expanded. It was a perfect primer for me as I prepare for a new role in my agency. -- Anne Maack, Child Start, Wichita, Kansas A valuable contribution to our colleagues in the nonprofit world--especially those of us in smaller organizations that do not have dedicated fund development staff.-- Jose Martinez, Executive Director, Food Bank of Yolo County, Yolo County, California |
| extracting gold from electronics: Waste Recycling Technologies for Nanomaterials Manufacturing Abdel Salam Hamdy Makhlouf, Gomaa A. M. Ali, 2021-05-09 This book discusses the recent advances in the wastes recycling technologies to provide low-cost and alternative ways for nanomaterials production. It shows how carbon nanomaterials can be synthesized from different waste sources such as banana fibers, argan (Argania spinosa) seed shells, corn grains, camellia oleifera shell, sugar cane bagasse, oil palm (empty fruit bunches and leaves) and palm kernel shells. Several nanostructured metal oxides (MnO2, Co3O4,....) can be synthesized via recycling of spent batteries. The recovered nanomaterials can be applied in many applications including: Energy (supercapacitors, solar cells, etc.) water treatments (heavy metal ions and dyes removal) and other applications. Spent battery and agriculture waste are rich precursors for metals and carbon, respectively. The book also explores the various recycling techniques, agriculture waste recycling, batteries recycling, and different applications of the recycled materials. |
| extracting gold from electronics: High Tech Trash Elizabeth Grossman, 2006-05-06 The Digital Age was expected to usher in an era of clean production, an alternative to smokestack industries and their pollutants. But as environmental journalist Elizabeth Grossman reveals in this penetrating analysis of high tech manufacture and disposal, digital may be sleek, but it's anything but clean. Deep within every electronic device lie toxic materials that make up the bits and bytes, a complex thicket of lead, mercury, cadmium, plastics, and a host of other often harmful ingredients. High Tech Trash is a wake-up call to the importance of the e-waste issue and the health hazards involved. Americans alone own more than two billion pieces of high tech electronics and discard five to seven million tons each year. As a result, electronic waste already makes up more than two-thirds of the heavy metals and 40 percent of the lead found in our landfills. But the problem goes far beyond American shores, most tragically to the cities in China and India where shiploads of discarded electronics arrive daily. There, they are recycled-picked apart by hand, exposing thousands of workers and community residents to toxics. As Grossman notes, This is a story in which we all play a part, whether we know it or not. If you sit at a desk in an office, talk to friends on your cell phone, watch television, listen to music on headphones, are a child in Guangdong, or a native of the Arctic, you are part of this story. The answers lie in changing how we design, manufacture, and dispose of high tech electronics. Europe has led the way in regulating materials used in electronic devices and in e-waste recycling. But in the United States many have yet to recognize the persistent human health and environmental effects of the toxics in high tech devices. If Silent Spring brought national attention to the dangers of DDT and other pesticides, High Tech Trash could do the same for a new generation of technology's products. |
| extracting gold from electronics: Gold Refining George J. Gajda, 1976 |
| extracting gold from electronics: Elements of Bioeconomy Krzysztof Biernat, 2019-10-23 This book is a review of the basic problems associated with the implementation of bioeconomic processes. The book contains chapters developed by teams from different countries of the world and therefore the chapters correspond to the degree of advancement of the areas within the bioeconomy in these countries. In selected areas, basic concepts and selected technological processes that create this area of the economy to ensure sustainable development have been characterized. |
| extracting gold from electronics: Electronic Waste Management and Treatment Technology Majeti Narasimha Vara Prasad, Meththika Vithanage, 2019-03-14 Electronic Waste Management and Treatment Technology applies the latest research for designing waste treatment and disposal strategies. Written for researchers who are exploring this emerging topic, the book begins with a short, but rigorous, discussion of electric waste management that outlines common hazardous materials. such as mercury, lead, silver and flame-retardants. The book also discusses the fate of metals contained in waste electrical and electronic equipment in municipal waste treatment. Materials and methods for the remediation, recycling and treatment of plastic waste collected from waste electrical and electronic equipment (WEEE) are also covered. Finally, the book covers the depollution benchmarks for capacitors, batteries and printed circuit boards from waste electrical and electronic equipment (WEEE) and the recovery of waste printed circuit boards through pyrometallurgy. - Describes depollution benchmarks for capacitors, batteries and printed wiring boards from waste electronics - Covers metals contained in waste electrical and electronic equipment in municipal waste - Provides tactics for the recycling of mixed plastic waste from electrical and electronic equipment |
| extracting gold from electronics: Impacts of artisanal gold and diamond mining on livelihoods and the environment in the Sangha Tri-National Park landscape Tieguhong Julius Chupezi, Verina Ingram, Jolien Schure, 2009 |
| extracting gold from electronics: Sustainable Inorganic Chemistry David A. Atwood, 2016-10-17 The Earth's natural resources are finite and easily compromised by contamination from industrial chemicals and byproducts from the degradation of consumer products. The growing field of green and sustainable chemistry seeks to address this through the development of products and processes that are environmentally benign while remaining economically viable. Inorganic chemistry plays a critical role in this endeavor in areas such as resource extraction and isolation, renewable energy, catalytic processes, waste minimization and avoidance, and renewable industrial feedstocks. Sustainable Inorganic Chemistry presents a comprehensive overview of the many new developments taking place in this rapidly expanding field, in articles that discuss fundamental concepts alongside cutting-edge developments and applications. The volume includes educational reviews from leading scientists on a broad range of topics including: inorganic resources, sustainable synthetic methods, alternative reaction conditions, heterogeneous catalysis, photocatalysis, sustainable nanomaterials, renewable and clean fuels, water treatment and remediation, waste valorization and life cycle sustainability assessment. The content from this book will be added online to the Encyclopedia of Inorganic and Bioinorganic Chemistry. |
| extracting gold from electronics: CRC Handbook of Metal Etchants Perrin Walker, William H. Tarn, 1990-12-11 This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools. |
| extracting gold from electronics: Energy Technology 2017 Lei Zhang, Jaroslaw W. Drelich, Neale R. Neelameggham, Donna Post Guillen, Nawshad Haque, Jingxi Zhu, Ziqi Sun, Tao Wang, John A Howarter, Fiseha Tesfaye, Shadia Ikhmayies, Elsa Olivetti, Mark William Kennedy, 2017-02-08 This collection focuses on energy efficient technologies including innovative ore beneficiation, smelting technologies, recycling and waste heat recovery. The volume also covers various technological aspects of sustainable energy ecosystems, processes that improve energy efficiency, reduce thermal emissions, and reduce carbon dioxide and other greenhouse emissions. Papers addressing renewable energy resources for metals and materials production, waste heat recovery and other industrial energy efficient technologies, new concepts or devices for energy generation and conversion, energy efficiency improvement in process engineering, sustainability and life cycle assessment of energy systems, as well as the thermodynamics and modeling for sustainable metallurgical processes are included. This volume also offers topics on CO2 sequestration and reduction in greenhouse gas emissions from process engineering, sustainable technologies in extractive metallurgy, as well as the materials processing and manufacturing industries with reduced energy consumption and CO2 emission. Contributions from all areas of non-nuclear and non-traditional energy sources, such as solar, wind, and biomass are also included in this volume.Papers from the following symposia are presented in the book:Energy TechnologiesAdvances in Environmental Technologies: Recycling and Sustainability Joint SessionDeriving Value from Challenging Waste Materials: Recycling and Sustainability Joint SessionSolar Cell Silicon |
| extracting gold from electronics: Hydrometallurgy ’94 Institution of Mining & Metallurgy, 2012-12-06 Hydrometallurgy '94 contains the 78 papers that were presented at the international symposium organized by the Institution of Mining and Metallurgy and the Society of Chemical Industry and held in Cambridge, England, in July 1994. In the papers specific attention is paid to the concept of sustainable development and the associated ideas of cleaner technology, recycling and waste minimization that have particular relevance to the extractiona nd processing of metals and other mineral products. The papers, by authors from 30 contries, are grouped under the headings: Hydrometallurgy and Sustainable Development; Materials Production and the Environment; Fundamentals; Leaching; Bioprocessing; Gold Solution Purification; Effluent Treatment; Processes; and Recycling. |
| extracting gold from electronics: 1746-1756 Horace Walpole, 1906 |
| extracting gold from electronics: Arizona Gold Placers and Placering Eldred D. Wilson, 2011-10-01 Arizona Gold Placers and Placering was published by the Arizona Bureau of Mines in conjunction with University of Arizona as Bulletin 118 in 1922 and eventually became what it is today as bulletin 142 in 1937 fourth revised edition. This book covers all of the known Placers in Arizona by county. Additional information on the placers, their formation, History, Geology, production and locations are included. In addition, best types of recovery for these placers are discussed. |
| extracting gold from electronics: Advanced and Emerging Technologies for Resource Recovery from Wastes Laleh Nazari, Chunbao (Charles) Xu, Madhumita B. Ray, 2021-04-01 This book introduces advanced or emerging technologies for conversion of wastes into a variety of high-value chemicals and materials. Energy and resources can be recovered from various residential, industrial and commercial wastes, such as municipal wastewater and sludge, e-waste, waste plastics and resins, crop residues, forestry residues and lignin. Advanced waste-to-resource and energy technologies like pyrolysis, hydrothermal liquefaction, fractionation, de-polymerization, gasification and carbonization are also introduced. The book serves as an essential guide to dealing with various types of wastes and the methods of disposal, recovery, recycling and re-use. As such it is a valuable resource for a wide readership, including graduate students, academic researchers, industrial researchers and practitioners in chemical engineering, waste management, waste to energy and resources conversion and biorefinery. |
| extracting gold from electronics: Gold Ore Processing Mike D. Adams, 2016-05-03 Gold Ore Processing: Project Development and Operations, Second Edition, brings together all the technical aspects relevant to modern gold ore processing, offering a practical perspective that is vital to the successful and responsible development, operation, and closure of any gold ore processing operation. This completely updated edition features coverage of established, newly implemented, and emerging technologies; updated case studies; and additional topics, including automated mineralogy and geometallurgy, cyanide code compliance, recovery of gold from e-waste, handling of gaseous emissions, mercury and arsenic, emerging non-cyanide leaching systems, hydro re-mining, water management, solid–liquid separation, and treatment of challenging ores such as double refractory carbonaceous sulfides. Outlining best practices in gold processing from a variety of perspectives, Gold Ore Processing: Project Development and Operations is a must-have reference for anyone working in the gold industry, including metallurgists, geologists, chemists, mining engineers, and many others. - Includes several new chapters presenting established, newly implemented, and emerging technologies in gold ore processing - Covers all aspects of gold ore processing, from feasibility and development stages through environmentally responsible operations, to the rehabilitation stage - Offers a mineralogy-based approach to gold ore process flowsheet development that has application to multiple ore types |
| extracting gold from electronics: Electronic Waste and Printed Circuit Board Recycling Technologies Muammer Kaya, 2019-10-17 This book covers state-of-the-art technologies, principles, methods and industrial applications of electronic waste (e-waste) and waste PCB (WPCB) recycling. It focuses on cutting-edge mechanical separation processes and pyro- and hydro-metallurgical treatment methods. De-soldering, selective dismantling, and dry separation methods (including the use of gravity, magnetic and electrostatic techniques) are discussed in detail, noting the patents related to each. The volume discusses the available industrial equipment and plant flowsheets used for WPCB recycling in detail, while addressing potential future directions of the field. This practical, comprehensive, and multidisciplinary reference will appeal to professionals throughout global industrial, academic and government institutions interested in addressing the growing problem of e-waste. Covers principles, methods and industrial applications of e-waste and PCB recycling; Details state-of-the-art mechanical separation processes and pyro- and hydro-metallurgical treatment methods; Describes the available industrial equipment used and plant flowsheets for PCB recycling and addresses potential future developments of this important field. |
| extracting gold from electronics: Almost Free Money Eric Michael, 2013-02-20 Almost Free Money Where do I sign up?! Are you looking for a fun way to make some extra cash and make ends meet? Would you like to launch your own home business with very little start-up costs? Are you a stay-at-home parent or retired senior looking for financial freedom? Are you already an internet seller who is bored with the selling the same old crap or tired of competing with other sellers for inventory? Looking to increase your profit margins on selling used items on the internet? Would you like to know how to save your family money by learning about many items that you can sell that most people throw right into their trash cans? Almost Free Money provides solutions to all of these problems facing many people in our current economic condition. This 119-page document (which is all information content, and no extraneous illustrations) is a compilation of ten years of research into materials that can easily be found in any location around the world for free or under $1. The book teaches readers methods for effectively reselling items online on eBay and at the Amazon marketplace with extremely high profit rates. The author has successfully used the research relayed in this book to locate and sell over 12,000 items at an average profit of over 500%. Here are the Top Ten Benefits from reading Almost Free Money: 1. Learn how to get your hands on tons of free items and materials that can be sold on the internet from home, or at physical locations if you prefer. Readers are provided with appendices containing over 520 such items, and the eBay categories where the items may be listed for maximum profit. Identify items that already exist in your home that can be sold for great money. 2. We will take a tour through your home and property and discuss items that can make you money instantly! 3. Find gold, silver and platinum for free in a variety of sources. Gold currently has a spot price of about $1700 a troy ounce. 4. If you are an internet seller, and only selling on eBay, you are missing the boat! You will learn where to effectively sell your treasure. 5. Learn what to look for while you are at garage sales, thrift stores, and flea markets. 6. You will learn how to sell scrap metal - the ultimate free money. You will take a virtual trip to a scrap metal dealer. Selling scrap is easy and fun. 7. Launch your home business for peanuts, and organize your business effectively, including record keeping and income tax issues. 8. Learn how to research on the internet, the most important skill for an entrepreneur. 9. Make money from home at any time of the day or night. You will build an inventory and make money while you sleep. 10. Find inventory anywhere in the world. Anybody can do this! We are confident that you will enjoy the accounts of finding treasure for free, and benefit from the information provided in this book. Come on and in and join several thousand fellow savers, garage sale shoppers and scrappers who have ordered Almost Free Money. Glad I came across this book! By Scott C. (Cedar Falls, Iowa USA) I have been searching for ways to start down-sizing our home... get rid of stuff that we no longer need or use. Rather than box it all up and give it away, I have learned several options of how we can profit off of our unused and unwanted things by reading this book. And if I want to i could pursue a way to earn a 2nd income through the author's very detailed and useful suggestions! You never know what treasures you have or can find and he helps you look for them and find them!!! I will never look at my junk the same way! |
| extracting gold from electronics: Michigan Gold Daniel Fountain, 1992 The glitter of gold created an era when a few determined prospectors searched the rugged hills and forests of Michigan's Upper Peninsula for the valuable mineral. Their stories range from the discovery of Lake Superior's mineral wealth in the 1840's to the modern mining and prospecting practices today. |
| extracting gold from electronics: Rare Keith Veronese, 2015-01-06 How will your life change when the supply of tantalum dries up? You may have never heard of this unusual metal, but without it smartphones would be instantly less omniscient, video game systems would falter, and laptops fail. Tantalum is not alone. Rhodium. Osmium. Niobium. Such refugees from the bottom of the periodic table are key components of many consumer products like cell phones, hybrid car batteries, and flat screen televisions, as well as sophisticated medical devices and even weapon systems. Their versatile properties have led manufacturers to seek these elements out to maximize longevity, value, and efficiency, but not without a human price. In addition to explaining the chemistry behind rare earth metals, Rare delves into the economic and geopolitical issues surrounding these “conflict minerals,” blending tales of financial and political struggles with glimpses into the human lives that are shattered by the race to secure them. In the past decade, the Congo has been ravaged by tribal wars fought to obtain control of tantalum, tungsten, and tin supplies in the region, with over five million people dying at the crossroads of supply and demand. A burgeoning black market in China, Africa, and India is propped up by school-age children retrieving and purifying these metals while risking their lives and health in the process. Fears of future political struggles inside China, the world’s largest supplier of these metals, have already sent the United States, Great Britain, and Japan racing to find alternative sources. Will scientists be able to create lab substitutes for some or all of these metals? Will Afghanistan be the next big supplier of rare metals? What happens when the limited supply runs out? Whatever the answers, it is clear that our modern lifestyle, dependent on technology, is far from stable. |
| extracting gold from electronics: The Art of Electronics Paul Horowitz, Winfield Hill, 2021 |
| extracting gold from electronics: Make: Electronics Charles Platt, 2015-09-07 A hands-on primer for the new electronics enthusiast--Cover. |
| extracting gold from electronics: Chemistry of Gold Extraction Mineekshi Awasthi, 2015-03 Gold extraction or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners. Hydraulic mining was used widely in the Californian gold rush, and involved breaking down alluvial deposits with high-pressure jets of water. Hard rock ores have formed the basis of the majority of commercial gold recovery operations since the middle of the 20th century where open pit and or sub-surface mining techniques are used. |
EXTRACTING | English meaning - Cambridge Dictionary
EXTRACTING definition: 1. present participle of extract 2. to remove or take out something: 3. to make someone give you…. Learn more.
EXTRACT Definition & Meaning - Merriam-Webster
Extract forms a kind of mirror image of abstract: more common as a verb, but also used as a noun and adjective. The adjective, meaning “derived or descended,” is now obsolete, as is a sense …
Extracting - definition of extracting by The Free Dictionary
Define extracting. extracting synonyms, extracting pronunciation, extracting translation, English dictionary definition of extracting. tr.v. ex·tract·ed , ex·tract·ing , ex·tracts 1. To draw or pull …
EXTRACT Definition & Meaning | Dictionary.com
To extract is to draw forth something as by pulling, importuning, or the like: to extract a confession by torture. To exact is to impose a penalty, or to obtain by force or authority, something to …
EXTRACT definition and meaning | Collins English Dictionary
To extract a substance means to obtain it from something else, for example by using industrial or chemical processes. ...the traditional method of pick and shovel to extract coal. [VERB noun] …
extracting - WordReference.com Dictionary of English
to draw forth: extracting information from the prisoners. to take or copy out (excerpts), as from a book: They extracted a few examples from the text. Chemistry to separate or obtain from …
Extract Definition & Meaning | Britannica Dictionary
Investigators were able to extract useful information from the company's financial records. They are hoping to extract new insights from the test results. The machines extract the juice from …
EXTRACTION Definition & Meaning - Merriam-Webster
The meaning of EXTRACTION is the act or process of extracting something. How to use extraction in a sentence.
What does extracting mean? - Definitions.net
An extract is a substance made by extracting a part of a raw material, often by using a solvent such as ethanol, oil or water. Extracts may be sold as tinctures, absolutes or in powder form.
EXTRACT | English meaning - Cambridge Dictionary
The science of extracting useful information from large data sets is usually referred to as 'data mining', sometimes along with 'knowledge discovery'.
EXTRACTING | English meaning - Cambridge Dictionary
EXTRACTING definition: 1. present participle of extract 2. to remove or take out something: 3. to make someone give you…. Learn more.
EXTRACT Definition & Meaning - Merriam-Webster
Extract forms a kind of mirror image of abstract: more common as a verb, but also used as a noun and adjective. The adjective, meaning “derived or descended,” is now obsolete, as is a sense …
Extracting - definition of extracting by The Free Dictionary
Define extracting. extracting synonyms, extracting pronunciation, extracting translation, English dictionary definition of extracting. tr.v. ex·tract·ed , ex·tract·ing , ex·tracts 1. To draw or pull out, …
EXTRACT Definition & Meaning | Dictionary.com
To extract is to draw forth something as by pulling, importuning, or the like: to extract a confession by torture. To exact is to impose a penalty, or to obtain by force or authority, something to …
EXTRACT definition and meaning | Collins English Dictionary
To extract a substance means to obtain it from something else, for example by using industrial or chemical processes. ...the traditional method of pick and shovel to extract coal. [VERB noun] …
extracting - WordReference.com Dictionary of English
to draw forth: extracting information from the prisoners. to take or copy out (excerpts), as from a book: They extracted a few examples from the text. Chemistry to separate or obtain from …
Extract Definition & Meaning | Britannica Dictionary
Investigators were able to extract useful information from the company's financial records. They are hoping to extract new insights from the test results. The machines extract the juice from the …
EXTRACTION Definition & Meaning - Merriam-Webster
The meaning of EXTRACTION is the act or process of extracting something. How to use extraction in a sentence.
What does extracting mean? - Definitions.net
An extract is a substance made by extracting a part of a raw material, often by using a solvent such as ethanol, oil or water. Extracts may be sold as tinctures, absolutes or in powder form.
EXTRACT | English meaning - Cambridge Dictionary
The science of extracting useful information from large data sets is usually referred to as 'data mining', sometimes along with 'knowledge discovery'.
