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Wills' Mineral Processing Technology, 8th Edition

Book Description

Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations.

Each chapter is dedicated to a major processing procedure—from underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation.

Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the book’s pedagogical role in the classroom.



  • Connects fundamentals with practical applications to benefit students and practitioners alike
  • Ensures relevance internationally with new material and updates from renowned authorities in the UK, Australia, and Canada
  • Introduces the latest technologies and incorporates environmental issues to place the subject of mineral processing in a contemporary context, addressing concerns of sustainability and cost effectiveness
  • Provides new case studies, examples, and figures to bring a fresh perspective to the field

Table of Contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Preface
  6. Acknowledgments
  7. Chapter 1. Introduction
    1. 1.1 Minerals
    2. 1.2 Abundance of Minerals
    3. 1.3 Deposits and Ores
    4. 1.4 Metallic and Nonmetallic Ores
    5. 1.5 The Need for Mineral Processing
    6. 1.6 Liberation
    7. 1.7 Concentration
    8. 1.8 Representing Mineral Processing Systems: The Flowsheet
    9. 1.9 Measures of Separation
    10. 1.10 Economic Considerations
    11. 1.11 Sustainability
    12. References
  8. Chapter 2. Ore Handling
    1. 2.1 Introduction
    2. 2.2 The Removal of Harmful Materials
    3. 2.3 Ore Transportation
    4. 2.4 Ore Storage
    5. 2.5 Feeding
    6. 2.6 Self-Heating of Sulfide Minerals
    7. References
  9. Chapter 3. Sampling, Control, and Mass Balancing
    1. 3.1 Introduction
    2. 3.2 Sampling
    3. 3.3 On-line Analysis
    4. 3.4 Slurry Streams: Some Typical Calculations
    5. 3.5 Automatic Control in Mineral Processing
    6. 3.6 Mass Balancing Methods
    7. 3.7 Example Mass Balance Calculations
    8. References
  10. Chapter 4. Particle Size Analysis
    1. 4.1 Introduction
    2. 4.2 Particle Size and Shape
    3. 4.3 Sieve Analysis
    4. 4.4 Sub-sieve Techniques
    5. 4.5 On-line Particle Size Analysis
    6. References
  11. Chapter 5. Comminution
    1. 5.1 Introduction
    2. 5.2 Principles of Comminution
    3. 5.3 Comminution Modeling
    4. 5.4 Comminution Efficiency
    5. References
  12. Chapter 6. Crushers
    1. 6.1 Introduction
    2. 6.2 Primary Crushers
    3. 6.3 Secondary/tertiary Crushers
    4. 6.4 High Pressure Grinding Rolls
    5. 6.5 Impact Crushers
    6. 6.6 Rotary Breakers
    7. 6.7 Crushing Circuits and Control
    8. References
  13. Chapter 7. Grinding Mills
    1. 7.1 Introduction
    2. 7.2 Tumbling Mills
    3. 7.3 Stirred Mills
    4. 7.4 Other Grinding Mill Types
    5. 7.5 Grinding Circuits
    6. References
  14. Chapter 8. Industrial Screening
    1. 8.1 Introduction
    2. 8.2 Screen Performance
    3. 8.3 Factors Affecting Screen Performance
    4. 8.4 Mathematical Models of Screens
    5. 8.5 Screen Types
    6. References
  15. Chapter 9. Classification
    1. 9.1 Introduction
    2. 9.2 Principles of Classification
    3. 9.3 Types of Classifiers
    4. 9.4 Centrifugal Classifiers—The Hydrocyclone
    5. 9.5 Gravitational Classifiers
    6. References
  16. Chapter 10. Gravity Concentration
    1. 10.1 Introduction
    2. 10.2 Principles of Gravity Concentration
    3. 10.3 Gravitational Concentrators
    4. 10.4 Centrifugal Concentrators
    5. 10.5 Sluices and Cones
    6. 10.6 Fluidized Bed Separators
    7. 10.7 Dry Processing
    8. 10.8 Single-Stage Units and Circuits
    9. References
  17. Chapter 11. Dense Medium Separation (DMS)
    1. 11.1 Introduction
    2. 11.2 The Dense Medium
    3. 11.3 Separating Vessels
    4. 11.4 DMS Circuits
    5. 11.5 Example DMS Applications
    6. 11.6 Laboratory Heavy Liquid Tests
    7. 11.7 Efficiency of DMS
    8. References
  18. Chapter 12. Froth Flotation
    1. 12.1 Introduction
    2. 12.2 Principles of Flotation
    3. 12.3 Classification of Minerals
    4. 12.4 Collectors
    5. 12.5 Frothers
    6. 12.6 Regulators
    7. 12.7 The Importance of pH
    8. 12.8 The Importance of Pulp Potential
    9. 12.9 Flotation Kinetics
    10. 12.10 The Role of Particle Size and Liberation
    11. 12.11 Cells, Banks, and Circuits
    12. 12.12 Flotation Testing
    13. 12.13 Flotation Machines
    14. 12.14 Flotation Cell and Gas Dispersion Characterization
    15. 12.15 Control of Flotation Plants
    16. 12.16 Reagent Addition and Conditioning
    17. 12.17 Flotation Flowsheets and Plant Practice
    18. 12.18 Other Surface Chemistry and Flotation-Based Separation Systems
    19. References
  19. Chapter 13. Magnetic and Electrical Separation
    1. 13.1 Introduction
    2. 13.2 Magnetism in Minerals
    3. 13.3 Equations of Magnetism
    4. 13.4 Magnetic Separator Design
    5. 13.5 Types of Magnetic Separator
    6. 13.6 Electrical Separation
    7. References
  20. Chapter 14. Sensor-based Ore Sorting
    1. 14.1 Introduction
    2. 14.2 Sensor-based Sorting Principles
    3. 14.3 Historical Development
    4. 14.4 Example Flowsheet and Economic Drivers
    5. References
  21. Chapter 15. Dewatering
    1. 15.1 Introduction
    2. 15.2 Gravitational Sedimentation
    3. 15.3 Centrifugal Sedimentation
    4. 15.4 Filtration
    5. 15.5 Drying
    6. References
  22. Chapter 16. Tailings Disposal
    1. 16.1 Introduction
    2. 16.2 Methods of Disposal of Tailings
    3. 16.3 Environmental Issues
    4. References
  23. Chapter 17. Modeling and Characterization
    1. 17.1 Introduction
    2. 17.2 Circuit Design and Optimization by Computer Simulation
    3. 17.3 Machine Design
    4. 17.4 Design of Experiments
    5. 17.5 Geometallurgy
    6. 17.6 Applied Mineralogy
    7. References
  24. Appendix I. Metallic Ore Minerals
  25. Appendix II. Common Nonmetallic Ores
  26. Appendix III. Technical Separation Efficiency: Definition and Derivation
  27. Appendix IV. Data Used in Figure 4.7
  28. Appendix V. Derivation of Fully Mixed Recovery Equation (Chapter 12, Equation 12.28)
  29. Appendix VI. Data and Computations to Determine Time Corresponding to Maximum Separation Efficiency (Figure 12.58), and to Determine Flotation Rate Constant (Figure 12.59)
  30. Index