Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vb metal
Patent
1982-06-22
1984-04-17
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vb metal
423150, 423 62, C01G 3100, C01G 5300
Patent
active
044434154
ABSTRACT:
Vanadium and nickel values are selectively recovered from a petroleum coke residue by slurrying the coke in an aqueous solution of sodium carbonate providing an excess of the stoichiometric amount of sodium for formation of sodium vanadate and sodium sulfate, and then digesting the slurry at moderately elevated temperature in a pressurized autoclave under an oxygen overpressure supplying at least the stoichiometric amount of oxygen based on the vanadium and sulfur content of the slurry and advantageously sufficient additional oxygen to provide the thermal requirements of the digestion step by oxidation of carbon. In a continuous embodiment, the feed slurry temperature and feed solids content are adjusted according to a substantially inversely correlated relationship. The digestion temperature for a given total pressure and gas flow rate in the autoclave is adjusted to generate a pregnant liquor containing about 20 gpl to about 100 gpl of vanadate (V.sub.2 O.sub.5) from which at least about 50% of the input water has been converted to steam during the digestion. The vanadate liquor is separated from the digestion residue, which is then sequentially selectively leached for recovery therefrom of nickel and residual vanadium values.
REFERENCES:
patent: 3132920 (1964-05-01), Goren
patent: 3214346 (1965-10-01), Mason et al.
patent: 3429693 (1969-02-01), Bauer et al.
patent: 3712942 (1973-01-01), Svejda
patent: 3773890 (1973-11-01), Fox et al.
patent: 4100251 (1978-07-01), Reinhardt et al.
patent: 4243639 (1981-01-01), Haas et al.
patent: 4296073 (1981-10-01), Maurel et al.
Jack et al., "Fuel", vol. 58, 1979, pp. 589-594.
Nair, et al., Research and Industry, vol. 25, Mar. 1980, pp. 1-4, "Recovery of Vanadium from Acidic Waste . . . ".
Hollis, et al., "Precipitation of Red Cake from Low Vanadium Acid Sulfate Leach Liquors", Topical Report ACCO-45 (U.S. Gov't. Report).
Beckstead Leo W.
Hogsett Robert F.
Huggins Dale K.
Queneau Paul B.
Amax Inc.
Carter Herbert T.
Ciomek Michael A.
LandOfFree
Recovery of V.sub.2 O.sub.5 and nickel values from petroleum cok does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of V.sub.2 O.sub.5 and nickel values from petroleum cok, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of V.sub.2 O.sub.5 and nickel values from petroleum cok will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-95039