| 摘要 |
<p>The present invention relates to recovering vanadium from solution and, especially, to the oxidation of vanadium to the pentavalent oxidation state (V) in aqueous acidic solution employing Caro's Acid, preferably in a high mole ration of peroxomonosulphuric acid to hydrogen peroxide and, especially, of at least 8:1. By using preferred Caro's Acid solutions, the reaction does not exhibit an induction period, thereby enabling the reaction to be readily controlled by monitoring the electro-potential of the treated-vanadium-solution and in response thereto regulating the introduction of the Caro's Acid solution. The vanadium oxidised to the pentavalent oxidation state (V) can readily be removed by contact with tertiary amines or ion exchange resins.</p> |
