Simulation of Solvent Extraction Flowsheets by a Global Model Combining Physicochemical and Engineering Approaches-Application to Cobalt(II) Extraction by D2EHPA

Alexandre Chagnes (1)

1 GeoRessources

The liquid-liquid extraction of cobalt(II) from an acidic chloride solution by using bis-(2ethylhexyl) phosphoric acid (D2EHPA) diluted in kerosene has been modelled by means of a combination of physicochemical and engineering approaches. This model is able to calculate the performance of solvent extraction flowsheets (residual fraction at the outlet of the flowsheet and concentration factor between the feed solution and eluate) as a function of pH, leach solution flowrate, solvent flowrate and stripping solution flowrate. The influence of these parameters and mixer-settlers arrangements on the performance of eleven flowsheets is discussed.

Mots clés: Solvent extraction; modelling; cobalt; D2EHPA; chloride

Domaines: Autre

Alexandre Chagnes. Simulation of Solvent Extraction Flowsheets by a Global Model Combining Physicochemical and Engineering Approaches-Application to Cobalt(II) Extraction by D2EHPA. Solvent Extraction and Ion Exchange, 2020, 38 (1), pp.3-13. ⟨10.1080/07366299.2019.1691135⟩. ⟨hal-02424027v2⟩