Method of recovering vanadium from vanadium-containing materials

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vb metal

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75101R, 75121, C01G 3100

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active

047480092

ABSTRACT:
Process for the recovery of vanadium from vanadium-containing source materials under the addition of additives, especially alkali metal compounds, particularly the carbonates, chlorides, sulfates as well as nitrates and/or mixtures of these compounds, whereby the source material is ground and roasted. The roasted material is leached and whereby the withdrawn leach solution is hydrometallurgically treated for the recovery of vanadium compounds. The source materials are first roasted without the addition of alkali additives and subsequently are leached in a first leaching step. To the residues of the first leaching step are added alkali additives and the mixture is roasted in a second roasting step. The roasting products are again leached.

REFERENCES:
patent: 4115110 (1978-09-01), Pyrih et al.
patent: 4554138 (1985-11-01), Marcantonio
patent: 4645651 (1987-02-01), Hahn et al.

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