04208380 is referenced by 6 patents and cites 4 patents.

Cobalt is recovered as a finely-divided and anhydrous salt from impure, nickel-bearing, aqueous solutions of cobalt, by exposing the aqueous solution to oxidation at an elevated temperature in the presence of ammonia and the respective ammonium salt, the formation of cobalt (III) hexammine ions is catalysed with activated carbon or solid sulfides, a cobalt (III) hexammine salt is crystallized from the solution, the salt is separated from the solution and pyrolysed to form a cobalt (II) salt, and the released ammonia is returned to the oxidation stage.

Title
Process for the recovery of cobalt from its impure, aqueous, in particular nickel-bearing, solutions and catalyst therefor
Application Number
5/922762
Publication Number
4208380
Application Date
July 7, 1978
Publication Date
June 17, 1980
Inventor
Tom O Niemi
Oja
FI
Heikki A Tiitinen
Ulvila
FI
Jussi K Rastas
Pori
FI
Matti J Hamalainen
Kokkola
FI
Agent
Brooks Haidt Haffner & Delahunty
Assignee
Outokumpu Oy
FI
IPC
C22B 23/04
C01G 51/12
C01G 51/10
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