This course will give the student a fundamental knowledge, from both chemical and technical viewpoints, of hydrometallurgical recovery of metals from ore and ore concentrates. This entails study of certain unit operations including leaching, liquid extraction electo-winning etc.
Inorganic chemical reaction theory, electrochemical equilibria and chemical thermodynamics.
Introduction: Comparison of pyrometallurgical and hydrometallurgical process technology. Overview of hydrometallurgical unit operations and processes.
Hydrometallurgical phase diagrams: Solubility and Pourbaix diagrams.
Leaching: Theory, reagents, methods and materials.
Solution purification: Chemical precipitation, cementation, crystallisation, ion-exchange and solvent extraction.
Metal recovery: Electrolytic processes (electrorefining, electrowinning, smelt electrolysis) and gas reduction.
Hydrometallurgical processes: Examples of hydrometallurgical applications with environmental considerations.
Laboratory exercises: Leaching and solvent extraction.
PC exercise: Construction of Pourbaix diagrams with FactSage software.
The teaching block consists of lectures, compulsory laboratory exercises and a study visit.
The examination block consists of approved laboratory reports and written exam with differentiated grades.
Grading scale: U, 3, 4, 5