| 摘要 |
A chemical process that recovers the vanadium contained in inorganic acid solutions, precipitating it as a solid compound of vanadium and alkaline metal or monovalent cation ferrocyanide is disclosed. Separation is carried out electrochemically, depositing the compound on to a metal immersed in the acid solution that contains vanadium as well as other dissolved metals, to which a ferrocyanide salt of an alkaline metal or a monovalent cation has been previously added. If the inorganic acid present in solution is different from nitric acid, the vanadium can be also separated by direct addition of a ferrocyanide salt of an alkaline metal or a monovalent cation to the acid solution containing vanadium. The method described allows recovery of vanadium without modifying the initial composition of the solution, except for the concentration of the vanadium dissolved.
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