Leaching Kinetics Of Valuable Metals

Author : Stefano Ubaldini
Publisher : MDPI
ISBN 13 : 3036505482
Total Pages : 188 pages
Book Rating : 4.80/5 ( download)

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Download or read book Leaching Kinetics of Valuable Metals written by Stefano Ubaldini and published by MDPI. This book was released on 2021-05-07 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaching is a primary extractive operation in hydrometallurgical processing, by which a metal of interest is transferred from naturally occurring minerals into an aqueous solution. In essence, it involves the selective dissolution of valuable minerals, where the ore, concentrate, or matte is brought into contact with an active chemical solution known as a leach solution. Currently, the hydrometallurgical processes have a great number of applications, not only in the mining sector—in particular, for the recovery of precious metals—but also in the environmental sector, for the recovery of toxic metals from wastes of various types, and their reuse as valuable metals, after purification. Therefore, there is an increasing need to develop novel solutions, to implement environmentally sustainable practices in the recovery of these valuable and precious metals, with particular reference to critical metals; those included in materials that are indispensable to modern life and for which an exponential increase in consumption is already a reality, or will be in a short-term perspective. For publication in this Special Issue, consideration has been given to articles that contribute to the optimization of the kinetic conditions of innovative hydrometallurgical processes—economic and of low environmental impact—applied to the recovery of valuable and critical metals.

Author : Stefano Ubaldini
Publisher :
ISBN 13 : 9783036505497
Total Pages : 188 pages
Book Rating : 4.90/5 ( download)

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Download or read book Leaching Kinetics of Valuable Metals written by Stefano Ubaldini and published by . This book was released on 2021 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaching is a primary extractive operation in hydrometallurgical processing, by which a metal of interest is transferred from naturally occurring minerals into an aqueous solution. In essence, it involves the selective dissolution of valuable minerals, where the ore, concentrate, or matte is brought into contact with an active chemical solution known as a leach solution. Currently, the hydrometallurgical processes have a great number of applications, not only in the mining sector--in particular, for the recovery of precious metals--but also in the environmental sector, for the recovery of toxic metals from wastes of various types, and their reuse as valuable metals, after purification. Therefore, there is an increasing need to develop novel solutions, to implement environmentally sustainable practices in the recovery of these valuable and precious metals, with particular reference to critical metals; those included in materials that are indispensable to modern life and for which an exponential increase in consumption is already a reality, or will be in a short-term perspective. For publication in this Special Issue, consideration has been given to articles that contribute to the optimization of the kinetic conditions of innovative hydrometallurgical processes--economic and of low environmental impact--applied to the recovery of valuable and critical metals.

Author : Ruan Chi
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.58/5 ( download)

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Download or read book Weathered Crust Elution-deposited Rare Earth Ores written by Ruan Chi and published by . This book was released on 2008 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weathered crust elution - deposited rare earth ore (original name is the ion-adsorbed rare earth ore) was first discovered as a novel exogenous ore in Jiangxi province of China in 1969. There are many advantages for the ore which has a widespread distribution, rich reserves, low radioactivity, complete RE partitioning and is rich in middle and heavy rare earth. Especially, the middle and heavy rare earth which occupies 80% over the world is the unique mineral resource in China, distributing only in southern China such as Jiangxi, Fujian, Hunan, Guangdong and Guangxi et al.

Author : Nathaniel Arbiter
Publisher : CRC Press
ISBN 13 : 9782881243974
Total Pages : 242 pages
Book Rating : 4.75/5 ( download)

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Download or read book Gold written by Nathaniel Arbiter and published by CRC Press. This book was released on 1990 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eight articles first appeared as volume 6 (no date) of Mineral processing and extractive metallurgy review. They review new methods of recovery for gold, and to some extent, silver, focus on the particular challenges of extraction from carbonaceous ores and from various sulfide-bearing ore, and the treatment of refractory gold ore, and discuss high-temperature and biological oxidation, high- temperature chlorination, and removing metals from leach liquor. Book club price, $40. Annotation copyrighted by Book News, Inc., Portland, OR

Author : Shafiq Alam
Publisher : Springer
ISBN 13 : 3319481355
Total Pages : 201 pages
Book Rating : 4.57/5 ( download)

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Download or read book Rare Metal Technology 2016 written by Shafiq Alam and published by Springer. This book was released on 2016-11-22 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of papers presented in the symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Paper topics include the extraction and processing of elements like antimony, arsenic, gold, indium, palladium, platinum, rare earth metals including yttrium and neodymium, titanium, tungsten, and vanadium. The rare processing techniques covered include direct extraction process for rare earth element recovery; biosorption of precious metals; fluorination behavior of uranium and zirconium mixture of fuel debris treatment; and recovery of valuable components of commodity metals such as zinc, nickel, and metals from slag.

Author : John Marsden
Publisher : Prentice Hall
ISBN 13 :
Total Pages : 618 pages
Book Rating : 4.38/5 ( download)

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Download or read book The Chemistry of Gold Extraction written by John Marsden and published by Prentice Hall. This book was released on 1992 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of the technological advances in gold extraction techniques, this text emphasizes practical applications and traces the actual process of extraction from ore mineralogy to bullion production. The main hydrometallurgical processes involved, such as leaching, are also covered.

Author : Suresh Bhargava
Publisher : MDPI
ISBN 13 : 3038424641
Total Pages : 335 pages
Book Rating : 4.42/5 ( download)

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Download or read book Hydrometallurgy written by Suresh Bhargava and published by MDPI. This book was released on 2018-07-02 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Hydrometallurgy" that was published in Metals

Author : Arda Işildar
Publisher : CRC Press
ISBN 13 : 0429657021
Total Pages : 192 pages
Book Rating : 4.23/5 ( download)

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Download or read book Metal Recovery from Electronic Waste: Biological Versus Chemical Leaching for Recovery of Copper and Gold written by Arda Işildar and published by CRC Press. This book was released on 2018-10-30 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waste electrical and electronic equipment (WEEE) generation is a global problem. Despite the growing awareness and deterring legislation, most of the WEEE is disposed improperly, i.e. landfilled or otherwise shipped overseas, and treated in sub-standard conditions. Informal recycling of WEEE has catastrophic effects on humans and the environment. WEEE contains considerable quantities of valuable metals such as base metals, precious metals and rare earth elements (REE). Metal recovery from WEEE is conventionally carried out by pyrometallurgical and hydrometallurgical methods. In this PhD research, novel metal recovery technologies from WEEE are investigated. Using acidophilic and cyanide-generating bacteria, copper and gold were removed from crushed electronic waste with removal efficiencies of 98.4 and 44.0%, respectively. The leached metals in solution were recovered using sulfidic precipitation and electrowinning separation techniques. Finally, a techno-economic assessment of the technology was studied. This research addresses the knowledge gap on two metal extraction approaches, namely chemical and biological, from a secondary source of metals. The essential parameters of the selective metal recovery processes, scale-up potential, techno-economic and sustainability assessment have been studied.

Author : Gisele Azimi
Publisher : Springer Nature
ISBN 13 : 3030367584
Total Pages : 379 pages
Book Rating : 4.89/5 ( download)

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Download or read book Rare Metal Technology 2020 written by Gisele Azimi and published by Springer Nature. This book was released on 2020-01-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents papers from a symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Rare metals include strategic metals that are in increasing demand and subject to supply risks. Metals represented include neodymium, dysprosium, scandium and others; platinum group metals including platinum, palladium, iridium, and others; battery related metals including lithium, cobalt, nickel, and aluminum; electronics-related materials including copper and gold; and refectory metals including titanium, niobium, zirconium, and hafnium. Other critical materials such as gallium, germanium, indium and silicon are also included. Papers cover various processing techniques, including but not limited to hydrometallurgy (solvent extraction, ion exchange, precipitation, and crystallization), electrometallurgy (electrorefining and electrowinning), pyrometallurgy, and aeriometallurgy (supercritical fluid extraction). Contributions are focused on primary production as well as secondary production through urban mining and recycling to enable a circular economy. ​A useful resource for all involved in commodity metal production, irrespective of the major metal Provides knowledge of cross-application among industries Extraction and processing of rare metals that are the main building block of many emerging critical technologies have been receiving significant attention in recent years. The technologies that rely on critical metals are prominent worldwide, and finding a way to extract and supply them effectively is highly desirable and beneficial.

Author : John P. Baur
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.59/5 ( download)

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Download or read book Initial Stage Sulfuric Acid Leaching Kinetics of Chalcopyrite Using Radiochemical Techniques written by John P. Baur and published by . This book was released on 1973 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: