Luleå University of Technology, September 2018

Schedule

Welcome and introduction (lecture)

  • Aims of the course and realization
  • Intended learning outcomes
  • Course completion, examination
  • Traditional approach in ore resource estimate and production management
  • New challenges
  • Definition of Geometallury
  • Block model before and now
  • Benefits of Geometallurgy

Sampling (lecture and PC class)

  • Proper sampling and sample preparation for metallurgical testing
  • Risks for high sampling error, planning for sampling
  • Calculation of sampling error
  • Sample taking from mineral processing circuits
  • Design of sample preparation scheme

Metallogeny of Fennoscandia

  • Fennoscandian shield – Geology, m
  • Metallogenic areas
  • Mining activities in Sweden and Finland
  • Norrbotten district
  • Skellefte district
  • Bergslagen district
  • Finnish mining districts

Research methods (lecture and PC class)

  • Diagnosis and troubleshooting of process problem
  • Mineralogical research – analytical methods
  • Texture analysis
  • Mineral liberation analysis
  • Element to mineral conversion

Particle behavior (lecture and PC class)

  • Mixed particles and liberation characteristics
  • Particle properties in comminution
  • Preferential breakage versus random breakage
  • Particle properties in classification
  • Separation efficiency
  • Particle properties in concentration
  • Recovery and grades
  • Particle properties in dewatering
  • Particle properties in leaching

Economical appraisal (lecture and PC class)

  • Description of the metal value chain
  • Models for evaluating profitability: Break-even analysis, cash flow analysis, net present value, internal rate of return
  • Metal prices and forecast
  • Supply and demand
  • Resources versus reserves
  • Cut-off grade
  • CAPEX and OPEX
  • Taxes

Metallurgical processing (lecture)

  • Introduction to process metallurgy
  • Methods for metal extraction
  • Challenges and opportunities of future metallurgy
  • Complex primary and secondary materials in metal extraction
  • Copper making – Pyrometallurgical extraction
  • Copper making – Hydrometallurgical extraction
  • Iron and steel making – Ore based versus scrap based
  • Iron and steel making – Blast furnace process
  • Iron and steel making – Refining
  • Iron and steel making – Casting

Mineral processing test methods (lecture and laboratory exercise)

  • Mineral process design
  • Comminution properties
  • Crack formation and propagation
  • Mineral liberation
  • Breakage mechanisms
  • Characterization of comminution processes
  • Strength tests
  • Grindability tests
  • Abrasion tests
  • Float-sink analysis
  • Davis tube test
  • Flotability tests
  • Conduct of Geometallurgical Comminution Test (GCT) (lab exercise)

Modelling and simulation (lecture and PC class)

  • Definitions, geometallurgical modelling
  • Spatial modelling
  • Geostatistics
  • Domaining
  • Geometallurgical parameters
  • Process modelling
  • Modelling depth

PC classes

  • Element-to-mineral conversion
  • Mineral liberation
  • Financial appraisal
  • Adventures of a process mineralogist

Introduction to the ”Serious game”

  • Intro “Geometallurgical project work – Developing a geometallurgical program and model”
  • Objectives and idea
  • Expected deliverables
  • Data set description
  • Chemical assays
  • Grindability tests
  • Concentration tests
  • Process flow sheets
  • Process model
  • Economical evaluation methods

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