C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/08 (2006.01) C22B 3/44 (2006.01) C22B 23/00 (2006.01)
Patent
CA 2229232
The invention relates to a method for recovering nickel and other valuable metals and for precipitating iron from two pyrometallurgically produced nickel mattes, one of which contains a smaller proportion of iron that the second matte. The leaching of iron-bearing nickel matte is carried out in at least one atmospheric leaching step and at least one pressure leaching step by using a leaching solution from the leaching cycle of a less iron containing matte into the leaching of a more iron containing matte at a stage where the iron of the less iron containing matte is in soluble form. The iron contained in the mattes is advantageously precipitated as jarosite and the solution created in the leaching of the more iron containing matte is conducted back into the leaching cycle of the less iron containing matte.
Procédé d'extraction du nickel par un seul et même traitement à partir de deux mattes de nickel obtenues par pyrométallurgie, dont l'une contient un pourcentage de fer notable. Le lessivage de la matte de nickel contenant du fer s'effectue en une seule opération par l'acheminement de la solution sortant du cycle de lessivage d'une matte à faible teneur en fer dans le lessivage d'une matte à forte teneur en fer, à un stade où le fer de la matte à faible teneur en fer se trouve sous forme soluble. Le fer contenu dans les mattes est précipité de façon avantageuse sous forme de jarosite et la solution créée lors du lessivage de la matte à forte teneur en fer est refoulée dans le cycle de lessivage de la matte à faible teneur en fer.
Fugleberg Sigmund Peder
Hultholm Stig-Erik
Norton Rose Or S.e.n.c.r.l.,s.r.l./llp
Outokumpu Technology Oy
Outotec Oyj
LandOfFree
Method for recovering nickel hydrometallurgically from two... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for recovering nickel hydrometallurgically from two..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering nickel hydrometallurgically from two... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1445202