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Author : Calm Morrison Hoke
Publisher : Unknown
Page : 362 pages
File Size : 54,5 Mb
Release : 1982
Category : Gold
ISBN : OCLC:3880829
Author : Calm Morrison Hoke
Publisher : Unknown
Page : 362 pages
File Size : 55,8 Mb
Release : 1978
Category : Metallurgy
ISBN : OCLC:3880829
Author : Calm Morrison Hoke
Publisher : Unknown
Page : 392 pages
File Size : 51,6 Mb
Release : 1984
Category : Metallurgy
ISBN : UOM:39015006398468
Author : Calm Morrison Hoke
Publisher : Unknown
Page : 362 pages
File Size : 45,5 Mb
Release : 1982
Category : Gold
ISBN : OCLC:3880829
Author : C.W. Ammen
Publisher : Springer
Page : 0 pages
File Size : 46,9 Mb
Release : 1997-07-31
Category : Science
ISBN : 0412720604
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.
Author : George J. Gajda
Publisher : George J. Gajda
Page : 232 pages
File Size : 42,7 Mb
Release : 1976
Category : Science
ISBN : PSU:000011018230
Author : Jr Hank Chapman
Publisher : Unknown
Page : 106 pages
File Size : 54,7 Mb
Release : 2019-06-14
Category : Electronic
ISBN : 1614740976
What's Inside? The only smelting information currently available. A complete plain English step-by-step guide for the amateur or professional. Illustrated in both color and B&W. Includes flux formulas for gold, Silver and alloys of both. Information on smelting precipitates, placer gold, scrap, concentrate, amalgam, and carbon ash. This book has a complete glossary, a supplier's index, conversion tables, equipment sources, information on what can or can't be smelted, and a comprehensive chapter on safety. Hints on how to sell your gold for more money, security, record keeping, dealing with the IRS, and more. Very easy to use and understand. Price includes technical support by the author.
Author : Roland Loewen
Publisher : Unknown
Page : 288 pages
File Size : 49,7 Mb
Release : 1995
Category : Crafts & Hobbies
ISBN : PSU:000026734545
Author : Reed M. Izatt
Publisher : John Wiley & Sons
Page : 552 pages
File Size : 44,7 Mb
Release : 2016-07-29
Category : Science
ISBN : 9781119009122
The sustainable use of natural resources is an important global challenge, and improved metal sustainability is a crucial goal for the 21st century in order to conserve the supply of critical metals and mitigate the environmental and health issues resulting from unrecovered metals. Metal Sustainability: Global Challenges, Consequences and Prospects discusses important topics and challenges associated with sustainability in metal life cycles, from mining ore to beneficiation processes, to product manufacture, to recovery from end-of-life materials, to environmental and health concerns resulting from generated waste. The broad perspective presented highlights the global interdependence of the many stages of metal life cycles. Economic issues are emphasized and relevant environmental, health, political, industrial and societal issues are discussed. The importance of applying green chemistry principles to metal sustainability is emphasized. Topics covered include: • Recycling and sustainable utilization of precious and specialty metals • Formal and informal recycling from electronic and other high-tech wastes • Global management of electronic wastes • Metal reuse and recycling in developing countries • Effects of toxic and other metal releases on the environment and human health • Effect on bacteria of toxic metal release • Selective recovery of platinum group metals and rare earth metals • Metal sustainability from a manufacturing perspective • Economic perspectives on sustainability, mineral development, and metal life cycles • Closing the Loop – Minerals Industry Issues The aim of this book is to improve awareness of the increasingly important role metals play in our high-tech society, the need to conserve our metal supply throughout the metal life cycle, the importance of improved metal recycling, and the effects that unhindered metal loss can have on the environment and on human health.
Author : George E. Gee
Publisher : Watchmaker Publishing
Page : 394 pages
File Size : 54,9 Mb
Release : 2002-10-28
Category : Precious metals
ISBN : 0972178678
Author : Rangabhashiyam Selvasembian,Pardeep Singh
Publisher : John Wiley & Sons
Page : 324 pages
File Size : 47,5 Mb
Release : 2021-10-25
Category : Technology & Engineering
ISBN : 9781119737599
Pollution due to various anthropogenic activities continues to increase. In terms of water pollutants, organic and inorganic pollutants are the most problematic. Although several measures have been proposed and implemented to prevent or reduce contamination, their increased concentration in water bodies has created serious concerns. Over the years, the problem has been aggravated by industrialization, urbanization and the exploitation of natural resources. The direct discharge of wastewater contaminants and their geographical mobilization have caused an increase in concentration in ground, surface, fluvial and residual waters. Extensive information about detection and disposal methods is needed in order to develop technological solutions for a variety of environments, both urban and rural. This book provides up-to-date information on wastewater contaminants, aimed at researchers, engineers and technologists working in this field. Conventional physicochemical techniques used to remove contaminants from wastewater include ion exchange, precipitation, degradation, coagulation, coating, membrane processes and adsorption. However, these applications have technological and economic limitations, and involve the release of large amounts of chemical reagents and by-products that are themselves difficult to remove. Biosorption - the use of organically generated material as an adsorbent – is attracting new research and scholarship. Thermally-treated calcined biomaterials may be treated to remove heavy metals from wastewater. To ensure the elimination of these contaminants, existing solutions must be integrated with intelligent biosorption functions. Biosorption for Wastewater Contaminants will find an appreciative audience among academics and postgraduates working in the fields of environmental biotechnology, environmental engineering, wastewater treatment technology and environmental chemistry.
Author : Donald Clark
Publisher : Unknown
Page : 162 pages
File Size : 41,5 Mb
Release : 2014-03-10
Category : Computers
ISBN : 1614740461
Gold Refining - by Donald Clark - This book covers the methods and systems of gold refining. Chapters Include - Occurrence of Native Gold - Refining Gold with Oxidising and Chloridising Agents - Sulfur Refining - Refining by Cementation Processes - Refining Gold Bullion by means of Oxygen - Miller's Process of Refining - Parting with Nitric Acid - Recovery of Silver from Nitrate Solutions - Refining by means of Sulphuric Acid - Parting gold by Electrolysis - Electrolytic Refining of Gold - The Treatment of Cyanide Precipitates - Other methods of refining gold slimes - The Nitre Cake method of Purifying Slimes - and more
Author : Ronald E. Hester,R. M. Harrison
Publisher : Royal Society of Chemistry
Page : 253 pages
File Size : 43,8 Mb
Release : 2013
Category : Nature
ISBN : 9781849736688
This volume examines the potential resource available from several waste streams. Opportunities for exploiting waste are discussed, along with their environmental and economic considerations.
Author : Francesco Vegliò,Ionela Birloaga
Publisher : Woodhead Publishing
Page : 428 pages
File Size : 47,9 Mb
Release : 2018-05-18
Category : Technology & Engineering
ISBN : 9780081020586
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
Author : Nicholas Nickerson
Publisher : CreateSpace
Page : 60 pages
File Size : 45,5 Mb
Release : 2014-09-04
Category : Electronic
ISBN : 1500743631
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.