Process for the high-yield recovery of vanadium from petroleum c

Details Process for the high-yield recovery of vanadium from petroleum c Process for the high-yield recovery of vanadium from petroleum c

1987-07-13

1989-03-21

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vb metal

423 68, 423592, 423593, C01G 3100

Patent

active

048141500

ABSTRACT:
A process for the high-yield recovery of vanadium from petroleum combustion residues, wherein these residues are: (a) subjected to attach with sodium hydroxide in the presence of an oxidizer, or (b) impregnated with sodium hydroxide, dried at 100.degree.-250.degree. C. and leached with water, to selectively extract vanadium with high yields. The vanadium is precipitated from the alkaline extract by adding H.sub.2 SO.sub.4 up to pH.apprxeq.2 and an ammonium salt. The precipitated ammonium polyvanadate is calcinated to vanadium pentoxide.

REFERENCES:
patent: 1999807 (1935-04-01), Gibbs
patent: 3416882 (1968-12-01), Whigham
patent: 3712942 (1973-01-01), Svejda
patent: 3873669 (1975-03-01), Guillaud
patent: 4061712 (1977-12-01), Morgan et al.
patent: 4640823 (1987-02-01), Goddard

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