Unit 2019: Fundamentals of Mineral Processing

1. Introduction to Mineral Processing

• Definition and scope
• Objectives: extraction of valuable minerals, removal of waste (gangue)
• Importance in mining and metallurgy
• Overview of mineral processing flowsheets

2. Mineral Liberation

• Definition of mineral liberation
• Particle size and liberation relationship
• Importance for downstream separation processes
• Techniques to assess liberation (e.g., microscopy, automated mineralogy)

3. Crushing and Grinding

• Purpose: particle size reduction to facilitate liberation
• Crushing:
  • Types: jaw crushers, gyratory crushers, cone crushers
  • Operating principles and typical applications
• Grinding:
  • Types: ball mills, rod mills, autogenous mills, semi-autogenous mills
  • Grinding media and mechanism
• Effect on particle size distribution and liberation

4. Classification in Mineral Processing

• Importance of classification for process efficiency
• Methods of classification:
  • Screening and sieving
  • Hydrocyclones
  • Spiral classifiers
• Criteria: particle size, density, shape
• Impact on separation and downstream processes

5. Froth Flotation

• Principle of froth flotation
• Role of reagents: collectors, frothers, modifiers
• Equipment: flotation cells, columns
• Process parameters influencing flotation efficiency
• Applications in separating sulfides, oxides, and non-metallic minerals

6. Gravity Separation

• Principle: separation based on density differences
• Equipment and techniques:
  • Jigs
  • Shaking tables
  • Spiral concentrators
• Applications and limitations

7. Magnetic and Electrostatic Separation

• Magnetic separation:
  • Principles and types of magnetic separators
  • Applications for ferromagnetic and paramagnetic minerals
• Electrostatic separation:
  • Principles based on conductivity
  • Equipment and applications

8. Dewatering and Tailings Management

• Importance of dewatering in mineral processing
• Techniques:
  • Thickening
  • Filtration
  • Dry stacking
• Tailings management:
  • Environmental considerations
  • Storage methods and safety
  • Water recovery and recycling

9. Process Simulation and Optimization

• Role of simulation in mineral processing
• Common software tools (e.g., METSIM, JKSimMet)
• Modeling unit operations
• Optimization techniques to improve recovery and reduce costs

10. Sustainable Practices in Mineral Processing

• Energy efficiency strategies
• Water conservation and reuse
• Minimizing environmental impacts
• Case studies on sustainable mineral processing