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This book gives an overview of all the gold extraction processes along with their mechanistic study and environmental impact. Reviews extraction techniques previously employed as well as recently evolved technology for gold leaching, provides technical flow sheets for processing of ores with a diversity of lixiviants and offers a compulsory overview of every gold processing technique It also discusses recent integrated techniques including hydro- and bio-metallurgical techniques with examples
Mineral processing technologies have been used for decades to protect the environment and many examples of such applications are given here. The book covers four major subject areas: fundamentals; environmental pollution and its prevention; separation processes; and innovative techniques. Audience: Scientists, engineers and technologists conducting both applied and basic research into the different environmental aspects of mineral processing.
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
Designed for geologists and engineers engaged specifically in the search for gold deposits of all types and as a reference for academics in higher schools of learning, Handbook of gold exploration and evaluation provides principles and detailed explanations that underpin the correct interpretation of day-to-day experience in the field. Problems are addressed with regard to the analysis, interpretation and understanding of the general framework within which both primary and secondary gold resources are explored, developed and exploited.Handbook of gold exploration and evaluation covers a comprehensive range of topics including the nature and history of gold, geology of gold ore deposits, gold deposition in the weathering environment, sedimentation and detrital gold, gold exploration, lateritic and placer gold sampling, mine planning and practise for shallow deposits, metallurgical processes and design, and evaluation, risk and feasibility. - Covers the nature and history of gold - Addresses problems with regard to the framework in which gold resources are explored, developed and exploited - Discusses topics including the geology of gold ore deposits, metallurgical processes and design, evaluation, risk and feasibility
This book delves into the anthropogenic activities responsible for environmental hazards, their compensation, and potential mitigation strategies. It sheds light on the major contributors to the climate change issues aggravated by non-sustainable practices for the overexploitation of natural resources. Critical topics such as high emissions in primary mining, the recovery of energy-critical metals by urban mining, solid waste management, and forest conservation are explored, offering insights into the urgent challenges we face. Amidst the rapid demand for resources and the expansion of human habitats, the book emphasizes the need for new approaches to natural resource management and introspection of our actions. Experts in the field discuss existing anthropogenic environmental hazards in detail, alongside environmental compensation, and effective mitigation approaches. The book begins with a chapter dedicated to risk assessment in primary mining activities for precious metals, proposing potential routes for mitigation. Chapter 2 focuses on assessing and mitigating the environmental footprints of energy-critical metals used in permanent magnets. In Chapter 3, a case study examines sustainable resource utilization through end-of-life room air conditioner recycling. Additional chapters provide critical insights into: The environmental impacts of e-waste and government policies for responsible management Hazards associated with industrial effluents and corresponding mitigation strategies The role of roadside plants in phytoremediation of heavy metal pollution Sustainable utilization of anthropogenic coal fly ash through mechanical and chemical activation Environmental damages resulting from the mismanagement of municipal solid waste Environmental problems and remediation strategies for anthropogenic biomass waste Challenges in sustainable municipal solid waste management and suggestions for environmental risk mitigation The book concludes with a chapter discussing collaborative governance and non-monetary compensation mechanisms for sustainable forest management. Given its breadth, this book serves as an indispensable resource for researchers, policymakers, and environmental professionals seeking sustainable approaches to tackle pressing environmental challenges.
The rapid revolution in modern industry has led to a significant increase in waste at the end of the product lifecycle. It is essential to close the loop, secure resources, and join up the circular economy. This book provides a detailed review of extraction techniques for urban mining of precious metals including gold, silver, and the platinum group. The merits and demerits of various extraction methods are highlighted, with possible suggestions for improvements. The feasibility of hybrid extraction techniques, as well as the sustainability and environmental impact of every process, is explored. Offers a comprehensive review of different techniques used in recycling technology for urban mining of precious metals Describes the concept of urban mining and its correlation with circular economy Discusses feasibility of precious metal extraction and urban mines scope and their potential Explains the subject in-context of sustainability while describing chemistry fundamentals and industrial practices Provides technical flow sheets for urban mining of precious metals with diversity of lixiviant This book is aimed at graduate students and researchers in extractive metallurgy, hydrometallurgy, chemical engineering, chemistry, and environmental engineering.
Describes current advances in metallurgical processes applied to gold extraction.
During the mid-twentieth century, Mineral Science and Engineering educator Frank White played an influential role in the advancement of his field, widely respected not only for his knowledge but also for his advocacy, leadership, and visionary perspective on both mining technologies and their impact on the environment. He looked at mining and metallurgical engineering though a much wider lens than was common at the time, embracing a diversity of cultures with environmental consciousness, inclusiveness, and a commitment to sustainability. Written by his son, this is the story of Frank White—a story that connects people, cultures, and histories from around the world: Australia, New Zealand, the Western Pacific, South East Asia, and North America. He lived through hardship, warfare, and economic upheavals, but with the love of his family, and the satisfaction of scientific and educational advancement, he remained always a seeker of knowledge, and an inspiration for all those whose lives he touched.
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.
Aquatic chemistry is becoming both a rewarding and substantial area of inquiry and is drawing many prominent scientists to its fold. Its literature has changed from a compilation of compositional tables to studies of the chemical reactions occurring within the aquatic environments. But more than this is the recognition that human society in part is determining the nature of aquatic systems. Since rivers deliver to the world ocean most of its dissolved and particulate components, the interactions of these two sets of waters determine the vitality of our coastal waters. This significant vol ume provides not only an introduction to the dynamics of aquatic chem istries but also identifies those materials that jeopardize the resources of both the marine and fluvial domains. Its very title provides its emphasis but clearly not its breadth in considering natural processes. The book will be of great value to those environmental scientists who are dedicated to keeping the resources of the hydrosphere renewable. As the size of the world population becomes larger in the near future and as the uses of materials and energy show parallel increases, the rivers and oceans must be considered as a resource to accept some of the wastes of society. The ability of these waters and the sediments below them to accommodate wastes must be assessed continually. The key questions relate to the capacities of aqueous systems to carry one or more pollutants.