Author: P. Bhakta
Publisher:
ISBN:
Category : Gold
Languages : en
Pages : 20

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Author: Jon I. Voltz
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 16

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Author: Mike D. Adams
Publisher: Elsevier
ISBN: 0080459080
Category : Technology & Engineering
Languages : en
Pages : 1077

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Book Description
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

Author: Sadia Ilyas
Publisher: CRC Press
ISBN: 1351367420
Category : Science
Languages : en
Pages : 246

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Book Description
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

Author: Nathaniel Arbiter
Publisher: CRC Press
ISBN: 9782881243974
Category : Business & Economics
Languages : en
Pages : 242

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Book Description
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 Marsden
Publisher: SME
ISBN: 9780873352406
Category : Science
Languages : en
Pages : 688

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Book Description
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:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Some recent work on the recovery of gold from refractory gold- bearing materials is described, special reference being made to some deposits in southern Africa. Possible explanations for the poor response of some gold-bearing materials to cyanidation are summarized, and the results of investigations into four techniques to enhance the response of refractory gold-bearing materials to cyanidation are presented. Mineralogical examinations of the feed and solid residues are used to show the reasons for the results obtained. Compared to conventional cyanide leaching, cyanidation under elevated pressure and lowered alkalinity significantly enhanced the rate of gold dissolution but, for all the samples except a stibnite concentrate, which gave a significantly better result, the final gold extraction showed no improvement. Activated carbon was deactivated, i.e. deprived of its ability to adsorb dissolved gold, by the addition of organic reagents. However, attempts similarly to poison the carbonaceous material in a sample of gold-bearing dump material were unsuccessful. Gold dissolution was enhanced by the oxidation of pyrite and arsenopyrite to sulphuric acid and aqueous ferric and arsenic species prior to cyanidation of the solid residue. A process comprising pyrolysis, mild oxidative leaching, the removal of elemental sulphur, and cyanidation gave gold dissolutions of up to 99 per cent, i.e. significantly better than by any other process.

Author: Neale Neelameggham
Publisher: Springer
ISBN: 3319481886
Category : Technology & Engineering
Languages : en
Pages : 265

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Book Description
This collection presents the papers from a 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, calcium, chromium, hafnium, gold, indium, lithium, molybdenum, niobium, rare earth metals, rhenium, scandium, selenium, silver, strontium, tantalum, tellurium, tin, tungsten, vanadium, and zirconium. Rare processing techniques presented include bio leaching, molecular recognition technology, recovery of valuable components of commodity metals such as magnesium from laterite process wastes, titanium from ilmenites, and rare metals from wastes such as phosphors and LCD monitors.

Author: J. N. Greaves
Publisher:
ISBN:
Category : Gold
Languages : en
Pages : 362

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Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 378

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Book Description