C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/18 (2006.01) C22B 3/26 (2006.01) C22B 15/00 (2006.01) C22B 23/00 (2006.01)
Patent
CA 2383818
A process for recovering nickel and copper from a concentrate which includes the steps of subjecting the concentrate to a treatment phase to produce a first leach solution which contains predominantly copper and a second leach solution which contains predominantly nickel, subjecting the first leach solution to a process for copper recovery which includes a solvent extraction step to produce a raffinate which is high in sulphuric acid, recycling at least a portion of the raffinate to the aforementioned treatment phase and subjecting the second leach solution to a process for nickel recovery.
La présente invention concerne un procédé de récupération de nickel et de cuivre à partir d'un concentré. Ce procédé consiste à soumettre ledit concentré à une phase de traitement, afin de produire une première solution de lixiviation, contenant de façon prédominante du cuivre, ainsi qu'une seconde solution de lixiviation, contenant de façon prédominante du nickel, à soumettre la première solution de lixiviation à un processus permettant de récupérer du cuivre, qui comprend une étape d'extraction par solvant, afin de produire un raffinat à forte teneur en acide sulfurique, à remettre en circulation au moins une partie dudit raffinat dans la phase de traitement susmentionnée, puis à soumettre la seconde solution de lixiviation à un processus permettant de récupérer du nickel.
Dew David William
Miller Deborah Maxine
Billiton Intellectual Property B.v.
Oyen Wiggs Green & Mutala Llp
LandOfFree
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