Leaching Kinetics Of Valuable Metals

Author : Stefano Ubaldini
Publisher : MDPI
Page : 188 pages
File Size : 45,5 Mb
Release : 2021-05-07
Category : Science
ISBN : 9783036505480

Get Book

Leaching Kinetics of Valuable Metals by Stefano Ubaldini Pdf

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 : Unknown
Page : 188 pages
File Size : 49,8 Mb
Release : 2021
Category : Electronic
ISBN : 3036505490

Get Book

Leaching Kinetics of Valuable Metals by Stefano Ubaldini Pdf

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 : Shafiq Alam,Hojong Kim,Neale Neelameggham,Takanari Ouchi,Harald Oosterhof
Publisher : Springer
Page : 200 pages
File Size : 41,9 Mb
Release : 2016-11-22
Category : Technology & Engineering
ISBN : 9783319481357

Get Book

Rare Metal Technology 2016 by Shafiq Alam,Hojong Kim,Neale Neelameggham,Takanari Ouchi,Harald Oosterhof Pdf

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 : Sadia Ilyas,Hyunjung Kim,Rajiv Ranjan Srivastava
Publisher : CRC Press
Page : 263 pages
File Size : 47,7 Mb
Release : 2021-03-08
Category : Science
ISBN : 9781000350630

Get Book

Sustainable Urban Mining of Precious Metals by Sadia Ilyas,Hyunjung Kim,Rajiv Ranjan Srivastava Pdf

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.

Author : John Marsden,Iain House
Publisher : SME
Page : 688 pages
File Size : 44,5 Mb
Release : 2006
Category : Science
ISBN : 0873352408

Get Book

The Chemistry of Gold Extraction by John Marsden,Iain House Pdf

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.

Author : Peter A. Wright
Publisher : Unknown
Page : 724 pages
File Size : 41,7 Mb
Release : 1989
Category : Precious metals
ISBN : UCAL:B4412946

Get Book

Precious and Rare Metal Technologies by Peter A. Wright Pdf

Author : Gisele Azimi,Kerstin Forsberg,Takanari Ouchi,Hojong Kim,Shafiq Alam,Alafara Abdullahi Baba
Publisher : Springer Nature
Page : 379 pages
File Size : 47,7 Mb
Release : 2020-01-20
Category : Technology & Engineering
ISBN : 9783030367589

Get Book

Rare Metal Technology 2020 by Gisele Azimi,Kerstin Forsberg,Takanari Ouchi,Hojong Kim,Shafiq Alam,Alafara Abdullahi Baba Pdf

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 : J. B. Zadra
Publisher : Unknown
Page : 68 pages
File Size : 42,7 Mb
Release : 1950
Category : Gold
ISBN : UOM:39015078535567

Get Book

A Process for the Recovery of Gold from Activated Carbon by Leaching and Electrolysis by J. B. Zadra Pdf

Author : Nathaniel Arbiter,Kenneth N. Han
Publisher : CRC Press
Page : 242 pages
File Size : 44,5 Mb
Release : 1990
Category : Business & Economics
ISBN : 2881243975

Get Book

Gold by Nathaniel Arbiter,Kenneth N. Han Pdf

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 : John P. Baur,H. L. Gibbs,Milton E. Wadsworth
Publisher : Unknown
Page : 48 pages
File Size : 40,7 Mb
Release : 1973
Category : Chalcopyrite
ISBN : UOM:39015078538959

Get Book

Initial Stage Sulfuric Acid Leaching Kinetics of Chalcopyrite Using Radiochemical Techniques by John P. Baur,H. L. Gibbs,Milton E. Wadsworth Pdf

Author : Anonim
Publisher : Unknown
Page : 20 pages
File Size : 50,9 Mb
Release : 1985
Category : Flotation
ISBN : UOM:39015078489674

Get Book

Recovery of Platinum, Palladium, and Gold from Stillwater Complex Flotation Concentrate by a Roasting-leaching Procedure by Anonim Pdf

The Bureau of Mines devised a procedure for selectively extracting platinum-group metals (PGM) and gold from Stillwater Complex flotation concentrate. The Stillwater Complex is the only major U.S. PGM resource. Development of a suitable extraction technique will contribute to its exploitation. The concentrate was roasted at 1,050° C to convert host base-metal sulfides to oxides and the PGM from sulfide minerals to their elemental states. The roasted concentrate was preleached with dilute sulfuric acid to remove easily soluble gangue minerals. After pre-leaching, the concentrate was slurried with 6M HCI and leached at ambient temperature and pressure with a strong-oxidizing agent. Hydrogen peroxide, chlorine, sodium hypochlorite, nitric acid, and a persulfate salt were the oxidants investigated. The two-stage leaching scheme ex-tracted up to 97 pct of the platinum, 92 pct of the palladium, and 99 pct of the gold from the roasted concentrate. The base metals were not solubilized and reported to the residue. No attempt was made to devise a procedure to recover the copper and nickel because they comprise less than 5 pct of the value of the concentrate. Viable techniques for recovering the precious metals from the pregnant solution were sulfide precipitation, cementation with nickel, or adsorption on activated carbon.

Author : Anonim
Publisher : SME
Page : 1201 pages
File Size : 51,9 Mb
Release : 2008
Category : Hydrometallurgy
ISBN : 9780873352666

Get Book

Hydrometallurgy 2008 by Anonim Pdf

Author : Sadia Ilyas,Hyunjung Kim,Rajiv Ranjan Srivastava
Publisher : CRC Press
Page : 252 pages
File Size : 45,5 Mb
Release : 2021-03-09
Category : Science
ISBN : 9781000350654

Get Book

Sustainable Urban Mining of Precious Metals by Sadia Ilyas,Hyunjung Kim,Rajiv Ranjan Srivastava Pdf

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.

Author : Hossain Md Anawar,Vladimir Strezov,Abhilash
Publisher : CRC Press
Page : 329 pages
File Size : 47,6 Mb
Release : 2019-11-25
Category : Nature
ISBN : 9781000761658

Get Book

Sustainable and Economic Waste Management by Hossain Md Anawar,Vladimir Strezov,Abhilash Pdf

This book compiles research findings directly related to sustainable and economic waste management and resource recovery. Mining wastes and municipal, urban, domestic, industrial and agricultural wastes and effluents—which contain persistent organic contaminants, nanoparticle organic chemicals, nutrients, energy, organic materials, heavy metal, rare earth elements, iron, steel, bauxite, coal and other valuable materials—are significantly responsible for environmental contamination. These low-tenor raw materials, if recycled, can significantly address the demand–supply chain mismatch and process sustainability as a whole while simultaneously decreasing their impacts on human life and biodiversity. This book summarises the large volume of current research in the realm of waste management and resource recovery, which has led to innovation and commercialisation of sustainable and economic waste management for improved environmental safety and improved economics. Key Features: Reviews the key research findings related to sustainable and economic resource recovery and waste management techniques Discusses minimizing waste materials and environmental contaminants with a focus on recovering valuable resources from wastes Examines the potential uses of mining waste in the re-extraction of metals, provision of fuel for power plants, and as a supply of other valuable materials for utilisation/processing Presents research on recycling of municipal, urban, domestic, industrial and agricultural wastes and wastewater in the production and recovery of energy, biogas, fertilizers, organic materials and nutrients Outlines topical research interests resulting in patents and inventions for sustainable and economic waste management techniques and environmental safety

Author : G. E. McClelland,Danny L. Pool,Judith A. Eisele
Publisher : Unknown
Page : 24 pages
File Size : 42,8 Mb
Release : 1983
Category : Agglomeration
ISBN : UOM:39015078466391

Get Book

Agglomeration-heap Leaching Operations in the Precious Metals Industry by G. E. McClelland,Danny L. Pool,Judith A. Eisele Pdf