Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vb metal
Patent
1983-08-31
1985-06-18
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vb metal
423 68, 423140, 423146, 423150, 423545, 75101R, 75108, 75115, 75119, 75121, C01G 3102, C01G 5300
Patent
active
045240493
ABSTRACT:
Vanadium and nickel are recovered from fluid coke or fly ash concurrently with cogeneration of steam by a wet oxidation process at 500.degree.-650.degree. F. and elevated pressure, with a leaching pH of approximately 0.3 maintained by generation of sulfuric acid in situ. Vanadium products are precipitated by oxidation with for example sodium perchlorate with concurrent or subsequent pH adjustment to about pH 2. Following separation of the vanadium pentoxide, nickel powder is preferentially recovered by reduction with hydrogen and ammonia. Steam is generated by recovery of the thermal energy present in the offgases.
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Doll John
Erickson Allen H.
Johnson Thomas L.
Stoll Robert L.
Wyatt B. Woodrow
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