Download or read book Adsorption of Gold Thiosulfates Onto Activated Carbon written by Mirna Martinovic and published by . This book was released on 1998 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Adsorption of Gold Thiosulphate Onto Activated Carbon written by Joshua Mazhakata and published by . This book was released on 1994 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adsorption of Gold from Gold Copper Ammonium Thiosulfate Complex Onto Activated Carbon and Ion Exchange Resins written by Rupali Mohansingh and published by . This book was released on 2000 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Chemistry of Gold Extraction written by John Marsden and published by SME. This book was released on 2006 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Method for Aqueous Gold Thiosulfate Extraction Using Copper cyanide Pretreated Carbon Adsorption written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.

Download or read book Advances in Hydrometallurgy written by Alexandre Chagnes and published by MDPI. This book was released on 2020-05-22 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of new technologies and the increasing demand for mineral resources from emerging countries are responsible for significant tensions in the pricing of non-ferrous metals. Some metals have become strategic and critical because they are used in many technological applications such as flat panel TVs (indium), solar panel cells (indium), lithium-ion batteries for electric vehicles (lithium, cobalt), magnets (rare earth elements, such as neodymium and dysprosium), scintillators (rare earths), and aviation and medical applications (titanium); their availabilities remain limited. The secured supply of these metals is crucial to continue producing and exporting these technologies, and because the specific properties of these metals make them essential and difficult to substitute for a given industrial application. Hydrometallurgy have the advantages of being able to process low-grade ores, to allow better control of co-products, and have a lower environmental impact providing that the hydrometallurgical route is optimized and cheap. The need to develop sustainable, efficient, and cheap processes to extract metals from complex and poor polymetallic matrices is real. The aim of this book was to highlight recent advances related to hydrometallurgy to face new challenges in metal production.

Download or read book Hydrometallurgy 2008 written by and published by SME. This book was released on 2008 with total page 1201 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gold Metallurgy and the Environment written by Sadia Ilyas and published by CRC Press. This book was released on 2018-02-19 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book A Process for the Recovery of Gold from Activated Carbon by Leaching and Electrolysis written by J. B. Zadra and published by . This book was released on 1950 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Ion Exchange Materials in Chemical and Food Industries written by Inamuddin and published by Springer. This book was released on 2019-02-04 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the applications of ion-exchange materials in the chemical and food industries. It includes topics related to the application of ion exchange chromatography in water softening, purification and separation of chemicals, separation and purification of food products and catalysis. This title is a highly valuable source of knowledge on ion-exchange materials and their applications suitable for postgraduate students and researchers but also to industrial R&D specialists in chemistry, chemical, and biochemical technology. Additionally, this book will provide an in-depth knowledge of ion-exchange column and operations suitable for engineers and industrialists.

Download or read book The Mechanism of the Adsorption of Gold Cyanide on Activated Carbon written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray photoelectron spectroscopy showed that the adsorption of gold cyanide on carbon in the presence or absence of electrolytes and acids proceeds by the same mechanism. Although the identity of the gold cyanide adsorbate is not known, the mechanism appears to have an initial adsorption stage that involves the adsorption of an ion pair: M(n+)[Au(CN)2(-)]n, where M(n+) is a metal ion (for example Na+, K+ and Ca(2+) that has a lower solubility than the Au(CN)2(-) anion in the adsorption medium, followed by a reduction step in which either a sub-stoichiometric Au(CN)x surface species or a cluster-type compound of gold is formed.

Download or read book Adsorption of the Cyano Complexes of Groups IB and IIB Metals on Activated Carbon written by Arturo Sabio Ibrado and published by . This book was released on 1986 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetic Models for the Adsorption of Gold Onto Activated Carbon written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A kinetic model for the adsorption of gold onto activated carbon is a valuable tool in the design and prediction of the performance of an operating adsorption plant. This paper compares and evaluates the existing kinetic models for batch adsorption. A dual-rate model is proposed to simulate the slow approach to equilibrium revealed by certain carbons. In this model, the carbon is divided into two interconnected regions with different kinetic characteristics. Equilibrium is assumed to exist between the liquid phase surrounding a carbon particle and the gold adsorbed on the external carbon surface. Batch kinetic experiments have been run for longer than 30 hours, with pure potassium aurocyanide used as the adsorbate. Different initial gold concentrations, carbon-to-solution ratios, and stirring rates have been used.

Download or read book A Study of the Factors Affecting the Adsorption of Gold on Activated Carbon written by K. Ofori-Ansah and published by . This book was released on 1981 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Gold Ore Processing written by Mike D. Adams and published by Elsevier. This book was released on 2005-12-02 with total page 1077 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gold processing industry is experiencing change. As free-milling and oxide ores become depleted, more complex polymetallic and refractory ores are being processed, coupled with increasing pressure for stricter environmental compliance. Recent years have also seen a steady reduction in mineral processing and metallurgy graduates and a gradual loss of older operating experience. A contribution to documenting current and future best practice in gold ore processing seems timely.The focus of this volume is on advances in current gold plant operation, from conception to closure; chapters also cover innovations at the bench and pilot-scale level that would be expected to find commercial application at some stage. Sufficient coverage is also given to the chemistry and engineering aspects. The general principle behind the structure of the volume is that of flowsheeting based on unit operations and applied to a mineralogical classification of gold ore types. From concept to closure, this book covers all unit operations, mineralogies and processes that are relevant to dealing with today's complex orebodies.Practical experience is vital to the successful development, operation and closure of any operation. The 42 chapters have been contributed by a total of 66 authors and co-authors who are experts from countries spanning the globe, and representing exhaustive practical knowledge covering many disciplines relevant to gold processing.* Current best practice as elucidated by a select panel of experts in the field* Innovations at the bench and pilot-scale level that would be expected to find commercial application at some stage* Mineralogical-based approach to flowsheeting

Download or read book Effect of Flotation Reagents on the Adsorption of Gold by Activated Carbon written by Collins William Mwapwele and published by . This book was released on 2015 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adsorption of Gold from Cyanide Solution Onto Mineral Surfaces written by and published by . This book was released on 1995 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a typical gold recovery plant, it is estimated that as much as 0.2 grams per ton of the gold reporting to the tailings is in a form that is theoretically recoverable; however, this gold is lost. Possible causes of this phenomenon include adsorption of the gold cyanide onto carbonaceous materials or onto various minerals, insufficient leaching time, and abraded activated carbon loss. This gold loss equates to about R13 million of potential revenue to this country alone. The aim of the present work was therefore to investigate the adsorption behaviour of gold onto several pure mineral surfaces that are common in gold ores, and to extablish the presence and significance of such an effect.