Volume 73 Issue 2
Thermodynamic and kinetic studies of dissolution of hematite in mixtures of oxalic and sulfuric acid
Vehmaanpera, Paula; Salmimies, Riina; Hakkinen, Antti
Better understanding of the mechanisms and kinetics of dissolution can benefit several industrial processes. For example, iron can be leached from clays, which can be further used as a raw material in the ceramic industry. Another important application is the regeneration of ceramic filter media, which are used in the dewatering of iron ores. Dissolution of iron oxides in mixtures of acids is fairly uncommon and a less well-understood phenomenon, but it can result in a more efficient process. This work also shows that the determination of dissolution mechanisms and kinetics is not straightforward in different acid systems.
Mining, Metallurgy & Exploration, https://doi.org/10.1007/s42461-020-00308-4
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