Gravity Concentration

Gravity concentration remains one of the most powerful and economical methods of recovering valuable minerals. When applied correctly, it can increase recovery, reduce downstream processing costs, recover free gold before leaching, and produce high-value concentrates without the need for expensive reagents. Yet many gravity circuits continue to be selected, operated and optimised using rules of thumb rather than sound engineering principles.

Gravity Concentration: A Practitioner's Handbook provides a practical guide to designing, selecting, commissioning and operating gravity concentration circuits in modern mineral processing plants. Written from the perspective of an engineer with more than four decades of industry experience, this handbook explains not only how gravity equipment works, but why it works—and when it doesn't.

Inside you'll learn about:

• The physics of gravity separation and particle settling
• Equipment selection for coarse, fine and ultra-fine applications
• Jigs, spirals, shaking tables, Knelson and Falcon concentrators, Reflux Classifiers and Dense Medium Separation
• Gravity Recoverable Gold (GRG) testing and interpretation
• Equipment sizing, circuit design and plant integration
• Commodity-specific applications including gold, chromite, tin, tungsten, coal and mineral sands
• Process control, maintenance and troubleshooting
• Practical worked examples and real plant calculations

Supported by a companion Excel workbook and numerous engineering illustrations, this handbook is written for metallurgists, mineral processing engineers, plant operators, consultants and engineering students who want practical solutions rather than purely academic theory.

Whether you are designing a new gravity circuit, optimising an existing plant or simply looking to deepen your understanding of gravity concentration, this book provides the practical knowledge needed to improve recovery, increase efficiency and make better engineering decisions.

Practical. Engineering-focused. Written by a practitioner—for practitioners.