Thermodynamics of impurities in hydrometallurgical processes

E. Königsberger; S. Bochmann; P.M. May; G. Hefter

doi:10.1351/PAC-CON-11-02-07

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Thermodynamics of impurities in hydrometallurgical processes

Journal article

Open access

Peer reviewed

Thermodynamics of impurities in hydrometallurgical processes

E. Königsberger, S. Bochmann, P.M. May and G. Hefter

Pure and Applied Chemistry, Vol.83(5), pp.1075-1084

2011

DOI: https://doi.org/10.1351/PAC-CON-11-02-07

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Abstract

Impurities in hydrometallurgical process liquors frequently impact on product quality and yield, change physicochemical properties of the liquor, and form hard scale on heat exchangers and condensers. Organic compounds are of particular concern especially in the Bayer process, where impurities build up in the recycled liquor if not controlled. Depending on the redox state of the liquor, such compounds can undergo a variety of complex chemical reactions, including the formation of volatiles that can potentially cause environmental, health, and safety concerns. To aid in the development of appropriate control strategies, robust thermodynamic models for multicomponent aqueous systems containing large numbers of electrolytes and nonelectrolytes are required. Applications of thermodynamic models are discussed that range from the partitioning of volatile compounds in flash trains to the prediction of mixing properties of organic impurities with major Bayer liquor components.

Details

Title: Thermodynamics of impurities in hydrometallurgical processes
Authors/Creators: E. Königsberger (Author/Creator) - Murdoch University
S. Bochmann (Author/Creator) - Murdoch University
P.M. May (Author/Creator) - Murdoch University
G. Hefter (Author/Creator) - Murdoch University
Publication Details: Pure and Applied Chemistry, Vol.83(5), pp.1075-1084
Publisher: International Union of Pure and Applied Chemistry
Identifiers: 991005542791007891
Copyright: IUPAC
Murdoch Affiliation: School of Chemical and Mathematical Science
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.89 Ionic, Molecular & Complex Liquids; 2.89.462 Excess Molar Volumes
Web Of Science research areas: Chemistry, Multidisciplinary
ESI research areas: Chemistry