Study on the Kinetics of Extracting Vanadium and Iron from Sulfuric Acid Solution with P507 AITranslate

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Chinese Library Classification Number:TF804.2[冶金工程—有色金属冶金]

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Vanadium is usually associated with other metals as a rare metal.A large number of impurity ions,such as iron,could exist in the sulfuric acid leaching solution of vanadium-bearing ore,which significantly impacts the subsequent separation and enrichment of vanadium.The study of extraction kinetics is an important method for determining the control steps in the extraction process,and the difficulty in extracting metal ions.A self-designed cylindrical constant interface cell was used to study the kinetics of extracting V(Ⅳ)and Fe(Ⅱ)from sulfuric acid solution with P507 as the extractant.The results show that the aqueous phase serves as the diffusion resistance zone of the extraction process,which is a chemical reaction-controlled type.The extraction rates of V(Ⅳ)and Fe(Ⅱ)both demonstrate an upward trend with the increase of stirring speed and extraction temperature.The apparent activation energy of V(Ⅳ)extraction is 48.68 kJ/mol,and that of Fe(Ⅱ)extraction is 135.11 kJ/mol.P507 is more likely to extract V(Ⅳ)from sulfuric acid solution,presenting the potential to achieve the efficient separation of V(Ⅳ)from Fe(Ⅱ).