Ilyas / Lee Gold Metallurgy and the Environment

Erscheinungsjahr 2018
ISBN: 978-1-351-36742-4
Verlag: Taylor & Francis
Format: EPUB
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 232 Seiten

This book gives an overview of all the gold extraction processes along with their mechanistic study and environmental impact. Different approaches in gold extraction are discussed including traditional pyrometallurgy, amalgamation, leaching by cyanide or non-cyanide lixiviants and emerging bioleaching using micro-organisms, in detail.

Autoren/Hrsg.

Ilyas, Sadia

Lee, Jae-chun

Fachgebiete

• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Metallurgie
• Geowissenschaften Umweltwissenschaften Umweltwissenschaften
• Technische Wissenschaften Bauingenieurwesen Boden- und Felsmechanik, Geotechnik

Inhaltsverzeichnis

1. GOLD ORE PROCESSING AND ENVIRONMENTAL IMPACTS: AN INTRODUCTION

1.1. Overview

1.2. A Historical Perspective

1.3. Occurrence of Gold

1.4. Gold Mineralogy

1.5. Classification of Gold-bearing Ores

1.6. Extraction Techniques of Gold Ores

1.7. Gold Metallurgy and Environmental Impact

References

2. ARTISANAL GOLD MINING AND AMALAGAMATION

2.1. Introduction

2.2. Process of Golf Extraction by ASGM

2.3. Gold Amalgamation

2.4. Processing Centers of ASGM in Various Countries

2.5. Environmental Impact by ASGM Activities and Associated Hazards

2.6. Trends in Sustainable Development of ASGM

References

3. CYANIDATION OF GOLD-BEARING ORES

3.1. Development History of Gold Cyanidation

3.2. Cyanide Leaching of Gold

References

4. THIOSULFATE LEACHING OF GOLD

4.1. Introduction

4.2. History of Gold-Thiosulfate Leaching

4.3. Influential Factors for Extracting Gold in a Thiosulfate Solution

4.4. Species Present in Thiosulfate Leach Liquors

4.5. Recovery of Gold from Thiosulfate Leach Liquors

4.6. Recyclability of Gold-depleted Thiosulfate Solutions

4.7. Environmental Benignness, Limitations and Challenges for Thiosulfate Leaching of Gold

References

5. THIOUREA LEACHING OF GOLD

5.1. Development of Gold Leaching in Thiourea Solution

5.2. Influential Factors for Extracting Gold in Thiourea Solution

5.3. Recovery of Gold from Thiourea Leach Liquor

5.4. Application of Gold-Thiourea Leaching

5.5. Environmental Benignness, Limitations and Challenges for Gold-Thiourea Leaching

References

6. HALIDE LEACHING OF GOLD

6.1. Chemistry for Halide Leaching of Gold

6.2. Development History of Gold-Halide Leaching

6.3. Chlorine Leaching

6.4. Bromine Leaching

6.5. Iodine Leaching

6.6. Applications of Gold-Halide Leaching

6.7. Recovery of Gold from Halide Leach Liquors

6.8. Environmental Benignness, Limitations and Challenges for Halide Leaching of Gold

References

7. MICROBIAL CYANIDATION OF GOLD

7.1. Microbial Role in Gold Metallurgy

7.2. Microbes-to-Metal Interactions

7.3. Bio-oxidation of Gold-bearing Refractory Ores

7.4 Bio-cyanidation and Cyanogenesis

7.5 Bioleaching of Gold in Microbial Produced Cyanide Solution

7.6. Bio-recovery of Gold from Leach Liquors

7.7. The Microbial-mediated Destruction of Cyanide

7.8 Environmental Benignness, Limitations and Challenges for the Microbial Activity in Gold Metallurgy

References

8 Human Perspectives on Gold Exploitation and Case Studies

8.1. Validity of Human Perception on Gold Industry

8.2. Health Risks at Localities of Underground Mining

8.3. Health Risks at Localities of Surface Mining

8.4. Case Study on Artisanal and Small-scale Gold Mining

8.5. Case Study on Gold Cyanidation

8.6. Case Study on Acid Mine Drainage from Gold Mining

References

Über Autor(innen)

Sadia Ilyas is currently working as an Assistant Professor in the Department of Chemistry, University of Agriculture Faisalabad, Pakistan. After receiving her M.Phil. and Ph.D. in Inorganic Chemistry from Bahauddin Zakariya University (Multan) and University of Agriculture (Faisalabad), respectively; she served in China as Senior Researcher at the School of Chemical Engineering and Pharmacy (Wuhan) and in Korea as Postdoctoral fellow at Korea Institute of Geoscience and Mineral Resources, and in Pakistan as Assistant Professor at GC University Faisalabad. Besides the academic lecture in Inorganic Chemistry and hydrometyallurgy, her research deals with hydrometallurgical exploitation of metals from primary and secondary sources using microbial and chemical activities. She has published more than 30 research articles in peer-reviewed international journals and also author in three books, nine contributed book chapters, text books and laboratory manuals.

Jae-chun Lee is currently Distinguished Principal Researcher in the Mineral Resources Research Division at the Korea Institute of Geoscience and Mineral Resources (KIGAM) and an adjunction professor in the Department of Resources Recycling at the Korea University of Science & Technology. Dr. Lee received his B.S. in metallurgical engineering, M.S. and Ph.D. in Hydrometallurgy from Hanyang University, Korea. His research deals with leaching, separation and purification of metals from primary and secondary resources. His current research focuses on the recycling of valuable metals from urban mines by hydrometallurgical routes. Dr. Lee has published around 300 research articles in several international peer-review journals and contributed in three book chapters.