Process for the recovery of metals from used nickel/metal/rare e

Details Process for the recovery of metals from used nickel/metal/rare e Process for the recovery of metals from used nickel/metal/rare e

1997-06-16

2000-08-29

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Rare earth metal

423 215, 4231501, 423 49, 423109, 423132, 423140, 423127, 423128, 423146, 423 99, 423139, C01F 1700, B01D 1100, C01G 4900, C22B 5900

Patent

active

061104337

ABSTRACT:
The invention relates to a process for recovering metals from used nickel/hydride storage batteries, in which storage battery scrap has been mechanically comminuted and divided into at least a coarse fraction and a fine fraction capable of being treated separately from one another. The process comprises the steps of digesting and dissolving the fine fraction with a mixture of sulfuric acid and hydrogen peroxide, performing a double sulfate precipitation of the rare earths by raising the pH, performing a precipitation of the iron and of the aluminum by further raising the pH, performing a solvent extraction of other metals to separate nickel and cobalt which remain in the aqueous phase from the other metals which are extracted into the organic phase. Optionally, the nickel and the cobalt can be separated from each other and, if desired, the mixed-metal rare earth component which has been recovered can be melted together with cobalt and nickel alloy for the fabrication of new batteries.

REFERENCES:
patent: 4041125 (1977-08-01), Alstad et al.
patent: 4162296 (1979-07-01), Muller et al.
patent: 5129945 (1992-07-01), Lyman et al.
patent: 5180563 (1993-01-01), Lai et al.
patent: 5377920 (1995-01-01), Alavi et al.
patent: 5407463 (1995-04-01), Van Erkel
patent: 5429887 (1995-07-01), Lyman et al.
patent: 5478664 (1995-12-01), Kaneko et al.
patent: 5728355 (1998-03-01), Asada

Affiliated with

Also associated with

Rating

Process for the recovery of metals from used nickel/metal/rare e does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the recovery of metals from used nickel/metal/rare e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the recovery of metals from used nickel/metal/rare e will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1246511