Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from

Details Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from

1982-09-24

1985-04-30

Konopka, P. E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

75103, 423 63, 423 68, 423139, 423150, C01G 3900, C01G 4100, C01G 3100, C01G 5100

Patent

active

045143684

ABSTRACT:
A process for removing nickel, cobalt, molybdenum, and vanadium from spent hydroprocessing catalyst particles by roasting the catalyst at between 400.degree. C. and 600.degree. C. and leaching the catalyst particles with an aqueous solution of ammonia and an ammonium salt.

REFERENCES:
patent: 2204193 (1940-06-01), Spicer
patent: 2298091 (1942-10-01), Cooper, Jr. et al.
patent: 2860967 (1958-11-01), Schlecht et al.
patent: 3168481 (1965-02-01), Erickson
patent: 3538017 (1970-11-01), Aglietti
patent: 3567433 (1971-03-01), Gutnikov
patent: 3933975 (1976-01-01), Nikolic et al.
patent: 4258016 (1981-03-01), Siemens et al.
Chemical Abstracts-94-178649x.

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