C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 23/00 (2006.01) C22B 3/06 (2006.01) C22B 3/08 (2006.01) C22B 3/26 (2006.01) C22B 3/44 (2006.01)
Patent
CA 2376883
There is provided a process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the flotation concentrate in a sulfuric acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach at elevated temperature under acidic conditions. After liquid-solids separation, purification and cobalt removal, the nickel- containing solution is directly treated by electrowinning to recover nickel cathode therefrom.
La présente invention concerne un procédé pour récupérer du nickel et du cobalt à partir d'un concentré de flottation sulfuré. Ce procédé consiste à produire une suspension du concentré de flottation dans une solution d'acide sulfurique, à soumettre le concentré de flottation en suspension à une lixiviation au chlore, à pression atmosphérique, puis à une lixiviation oxydante sous pression, à température élevée, en atmosphère acide. Après la séparation liquide-solide, la purification et l'extraction de cobalt, la solution contenant du nickel est directement traitée par électroextraction, afin d'en récupérer une cathode nickel.
Kerfoot Derek G.e.
Krause Eberhard
Love Bruce John
Singhal Avinash
Inco Limited
Smart & Biggar
LandOfFree
Recovery of nickel and cobalt values from a sulfidic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of nickel and cobalt values from a sulfidic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of nickel and cobalt values from a sulfidic... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1757670