Method for recovering vanadium from residues from the combustion

Details Method for recovering vanadium from residues from the combustion Method for recovering vanadium from residues from the combustion

1987-07-13

1988-11-29

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vb metal

423 63, 423593, C01G 3100, C01G 5304

Patent

active

047880449

ABSTRACT:
A method is described for recovering vanadium from residues from the combustion of petroleum fractions, wherein the residues, such as ash and soot, are leached with aqueous H.sub.2 SO.sub.4 to extract vanadium and any additional polyvalent cations contained therein. The acid leaching solution, after oxidation of the extracted cations, is treated with a complexing agent, in particular EDTA or salts thereof, and then with ammonia to selectively precipitate vanadium as highly pure ammonium polyvanadate.

REFERENCES:
patent: 2176610 (1937-11-01), Stamberg
patent: 4100251 (1978-07-01), Reinhardt et al.
patent: 4474738 (1984-10-01), Martin
patent: 4524049 (1985-06-01), Sit
patent: 4666683 (1987-05-01), Brown et al.

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