Leaching cobalt from metal-containing particles

Details Leaching cobalt from metal-containing particles Leaching cobalt from metal-containing particles

1990-03-09

1991-11-19

Morris, Theodore

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423 53, 423 54, 423138, 502 26, C22B 2300

Patent

active

050664697

ABSTRACT:
A process is disclosed to extract cobalt and optionally, at least one metal value selected from the group consisting of molybdenum, nickel, tungsten, and vanadium from metal-containing particles, such as spent hydroprocessing catalysts particles containing carbon residue. In this process, the spent catalyst particles are roasted in an oxygen-containing gas at a temperature of from 400.degree. C. to 600.degree. C., and then the roasted catalyst particles are contacted with an aqueous solution of ammonia, ammonium salt, and hydrogen peroxide. The aqueous solution has an initial pH of at least 9.5 and an initial hydrogen peroxide concentration of from 0.02 to 0.2 M. That aqueous solution is maintained at a pH of greater than 9.5.

REFERENCES:
patent: 2204193 (1940-06-01), Spicer
patent: 2363315 (1944-11-01), Grothe
patent: 3567433 (1971-03-01), Gutnikov
patent: 3653815 (1972-04-01), Skarbe
patent: 3953200 (1976-04-01), Im et al.
patent: 4080421 (1978-03-01), Kasserra
patent: 4145397 (1979-03-01), Toida et al.
patent: 4382068 (1983-05-01), Rokukawa
patent: 4409190 (1983-10-01), Van Leirsburg
patent: 4514368 (1985-04-01), Hubred
patent: 4554138 (1985-11-01), Marcantonjo
patent: 4872909 (1989-10-01), Allen et al.
patent: 4927794 (1990-05-01), Marcantonio

Affiliated with

Also associated with

Rating

Leaching cobalt from metal-containing particles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leaching cobalt from metal-containing particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leaching cobalt from metal-containing particles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1368874