Recent Advances in the Leaching of Sulphides and the Precipitation of Iron PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Recent advances in the leaching of sulphide concentrates and in the associated area of iron precipitation are examined. Sherritt Gordon's technology of pressure leaching with oxygen and sulphuric acid is being applied commercially to zinc concentrates. A Zn recovery of over 98 per cent is achieved, and the associated pyrite is largely unaffected; elemental sulphur is the principal sulphidic product. Leaching processes with ferric chloride or cupric chloride, or both, are being applied to a wide variety of sulphide concentrates. Duval's CLEAR cupric chloride leach process for copper concentrates has been evaluated at the demonstration-plant scale, and many other processes using FeCl3 or CuCl2, or both, for copper have been piloted. Several chloride leaching processes for lead or pyritic zinc concentrates have also been tested successfully at the pilot level. All the processes stress the advantages of the formation of elemental sulphur and the relative lack of pyrite attack. Equally important advances have been made in the elucidation of the fundamental leaching reactions involved. Technologies for the precipitation of jarosite, goethite, and hematite are being used routinely for the control of iron in both sulphate and chloride media, and efforts are currently being made to control metal losses (Pb, Zn, Cu, Ag, etc.) associated with these precipitates. Although ongoing research has clarified many aspects of iron precipitation, it has yet to find large-tonnage uses for the various iron precipitates.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Recent advances in the leaching of sulphide concentrates and in the associated area of iron precipitation are examined. Sherritt Gordon's technology of pressure leaching with oxygen and sulphuric acid is being applied commercially to zinc concentrates. A Zn recovery of over 98 per cent is achieved, and the associated pyrite is largely unaffected; elemental sulphur is the principal sulphidic product. Leaching processes with ferric chloride or cupric chloride, or both, are being applied to a wide variety of sulphide concentrates. Duval's CLEAR cupric chloride leach process for copper concentrates has been evaluated at the demonstration-plant scale, and many other processes using FeCl3 or CuCl2, or both, for copper have been piloted. Several chloride leaching processes for lead or pyritic zinc concentrates have also been tested successfully at the pilot level. All the processes stress the advantages of the formation of elemental sulphur and the relative lack of pyrite attack. Equally important advances have been made in the elucidation of the fundamental leaching reactions involved. Technologies for the precipitation of jarosite, goethite, and hematite are being used routinely for the control of iron in both sulphate and chloride media, and efforts are currently being made to control metal losses (Pb, Zn, Cu, Ag, etc.) associated with these precipitates. Although ongoing research has clarified many aspects of iron precipitation, it has yet to find large-tonnage uses for the various iron precipitates.
Author: Deepak Malhotra Publisher: SME ISBN: 0873353161 Category : Ore-dressing plants Languages : en Pages : 587
Book Description
A compilation of engaging and insightful papers from the prestigious 2009 Plant Design Symposium, the volume is a sequel to Mineral Processing Plant Design, Practice, and Control, an industry standard published in 2002. Both books are indispensable texts for university-level instruction, as well as valuable guides for operators considering new construction, plant renovation, or expansion. You'll learn the role of innovation, how to finance and conduct feasibility studies, and how to reduce your plant's carbon footprint.
Author: Sam Stuart Publisher: Elsevier ISBN: 1483155811 Category : Technology & Engineering Languages : en Pages : 263
Book Description
Recent Advances in Mining and Processing of Low-Grade and Submarginal Mineral Deposits reviews advances in the mining and processing of low-grade and submarginal mineral deposits, taking into account the environmental considerations that increasingly are being regarded as a necessary prerequisite to acceptable mineral resources development. The focus is on marginal and sub-marginal ores, as well as ores of above normal cut-off grades which for some reason cannot be mined and/or processed economically at current technological or economic levels. This book is comprised of 12 chapters and begins with an overview of low-grade ore potential, followed by a discussion on the theoretical and practical aspects of in situ mining. Block cave-in place leaching, biological leaching of sulfide ores, and nuclear chemical mining of primary copper sulfides are also considered. Subsequent chapters explore the economics and safety of nuclear chemical copper mining; hydrometallurgy of low-grade copper ores; trends in process metallurgy; and environmental aspects of mining and processing low-grade and submarginal mineral deposits. This monograph should be of interest to mining officials and professionals.
Author: Katarzyna Chojnacka Publisher: John Wiley & Sons ISBN: 1119133777 Category : Science Languages : en Pages : 588
Book Description
Comprehensive and multidisciplinary presentation of the current trends in trace elements for human, animals, plants, and the environment This reference provides the latest research into the presence, characterization, and applications of trace elements and their role in humans, animals, and plants as well as their use in developing novel, functional feeds, foods, and fertilizers. It takes an interdisciplinary approach to the subject, describing the biological and industrial applications of trace elements. It covers various topics, such as the occurrence, role, and monitoring of trace elements and their characterization, as well as applications from the preliminary research to laboratory trials. Recent Advances in Trace Elements focuses on the introduction and prospects of trace elements; tackles environmental aspects such as sources of emission, methods of monitoring, and treatment/remediation processes; goes over the biological role of trace elements in plants, animals, and human organisms; and discusses the relevance of biomedical applications and commercialization. A compendium of recent knowledge in interdisciplinary trace element research Uniquely covers production and characterization of trace elements, as well as the industrial and biomedical aspects of their use Paves the way for the development of innovative products in diverse fields, including pharmaceuticals, food, environment, and materials science Edited by well-known experts in the field of trace elements with contributions from international specialists from a wide range of areas Unique in presenting comprehensive and multidisciplinary information of the key aspects of trace elements research in a digestible form, this book is essential reading for the novice and expert in the fields of environmental science, analytical chemistry, biochemistry, materials science, pharmaceutical science, nutraceutical, and pharmaceutical sciences. It is also valuable for companies that implement new products incorporating trace elements to the market.
Author: Metallurgical Society (U.S.). Meeting Publisher: Society for Mining Metallurgy & Exploration ISBN: Category : Technology & Engineering Languages : en Pages : 480
Author: Katarzyna Chojnacka Publisher: John Wiley & Sons ISBN: 1119133793 Category : Science Languages : en Pages : 592
Book Description
Comprehensive and multidisciplinary presentation of the current trends in trace elements for human, animals, plants, and the environment This reference provides the latest research into the presence, characterization, and applications of trace elements and their role in humans, animals, and plants as well as their use in developing novel, functional feeds, foods, and fertilizers. It takes an interdisciplinary approach to the subject, describing the biological and industrial applications of trace elements. It covers various topics, such as the occurrence, role, and monitoring of trace elements and their characterization, as well as applications from the preliminary research to laboratory trials. Recent Advances in Trace Elements focuses on the introduction and prospects of trace elements; tackles environmental aspects such as sources of emission, methods of monitoring, and treatment/remediation processes; goes over the biological role of trace elements in plants, animals, and human organisms; and discusses the relevance of biomedical applications and commercialization. A compendium of recent knowledge in interdisciplinary trace element research Uniquely covers production and characterization of trace elements, as well as the industrial and biomedical aspects of their use Paves the way for the development of innovative products in diverse fields, including pharmaceuticals, food, environment, and materials science Edited by well-known experts in the field of trace elements with contributions from international specialists from a wide range of areas Unique in presenting comprehensive and multidisciplinary information of the key aspects of trace elements research in a digestible form, this book is essential reading for the novice and expert in the fields of environmental science, analytical chemistry, biochemistry, materials science, pharmaceutical science, nutraceutical, and pharmaceutical sciences. It is also valuable for companies that implement new products incorporating trace elements to the market.
Author: 
Author: 
Author: Deepak Malhotra
Author: Sam Stuart
Author: Kostas a Komnitsas
Author: Katarzyna Chojnacka
Author: Metallurgical Society (U.S.). Meeting
Author: Katarzyna Chojnacka
Author: United States. Bureau of Mines
Author: 
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