Process for the recovery of valuable metals from spent crude-oil

Details Process for the recovery of valuable metals from spent crude-oil Process for the recovery of valuable metals from spent crude-oil

1982-09-28

1984-10-02

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 68, 423114, 423115, 423117, 423122, 423128, 423150, C01G 3900, C01G 5100, C01G 5300, C01F 776

Patent

active

044747357

ABSTRACT:
A process for the recovery of valuable metals from roasted crude-oil sulfur-extraction catalyst waste is disclosed. In this process the value metals can be separated from aluminum in a single stage by treating the waste at elevated temperature and pressure with such an amount of sulfate solution that the waste dissolves and the aluminum simultaneously precipitates as alunite, which is separated from the solution which contains the other value metals. A sulfate solution is preferably added in such an amount that the concentration of sulfuric acid in the solution is 2-30 g/l at the end of the stage.

REFERENCES:
patent: 3567433 (1971-03-01), Gutnikov
patent: 3578395 (1971-05-01), Kliksdahl et al.
patent: 4087510 (1978-05-01), Steenken
patent: 4100251 (1978-07-01), Reinhardt et al.
patent: 4115110 (1978-09-01), Pyrih et al.
patent: 4145397 (1979-03-01), Toida et al.
patent: 4343774 (1982-08-01), Tilley
patent: 4394368 (1983-07-01), Shanks

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