|About this Abstract
||Part C-1: Hydrometallurgy 2018
||Developements in Modelling of Zinc Hydrometallurgy
||Tuomas Vielma, Justin Salminen, Ulla Lassi
|On-Site Speaker (Planned)
An internally consistent thermodynamic model was derived for the system ZnSO4-H2SO4-H2O. Temperature dependent Pitzer parameters and thermodynamic properties of the solid phases were optimized based on various types of experimental data. The model reproduces experimental data with good accuracy, especially near compositions and conditions typical for hydrometallurgy of zinc. The model extrapolates well even up to 15 m H2SO4 solutions, however. With addition of new minor components such as SiO2 or CaSO4, different steps of the hydrometallurgical process can modelled. Application of this kind of modelling can add valuable insight to solution purification and cumulation of impurities. This can achieved in practice by applying thermochemical software such as FactSage or ChemSheet.
||Planned: At-meeting proceedings