C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
53/142, 23/199
C01G 31/00 (2006.01) C01B 17/90 (2006.01) C09C 1/48 (2006.01) C22B 3/04 (2006.01) C22B 3/32 (2006.01) C22B 34/22 (2006.01)
Patent
CA 1297680
METHOD FOR RECOVERING VANADIUM FROM RESIDUES FROM THE COMBUSTION OF PETROLEUM FRACTIONS ABSTRACT-OF-THE-DISCLOSURE 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 H2SO4 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.
542313
Corigliano Francesco
Di Pasquale Sebastiana
Primerano Patrizia
Zipelli Cesare
Corigliano Francesco
Di Pasquale Sebastiana
Ente Minerario Siciliano
Primerano Patrizia
Swabey Ogilvy Renault
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