C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 23/00 (2006.01) C22B 3/14 (2006.01) C22B 5/10 (2006.01)
Patent
CA 2256560
The present is a hydrometallurgical process for nickel and cobalt recovery, which involves leaching with ammonia-ammonium carbonate solution of the nickel and cobalt bearing mineral material, using a tubular reactor (4) with air or oxygen injection (5), said mineral material is previously submitted to selective reduction and cooling. The new ammonia leaching process, followed by liquid/solid separation (7) and/or nickel and/or cobalt extraction by solvent or ion-exchange resin, allows the recovery of all the extractable nickel and up to the 130 % cobalt extraction reported by the standard ammonia-ammonium leaching.
Procédé hydrométallurgique pour la récupération de nickel et de cobalt comprenant la lixiviation du matériau minéral contenant du nickel et du cobalt avec une solution de carbonate ammoniacal au moyen d'un réacteur tubulaire (4) à injection (5) d'air ou d'oxygène. Ledit matériau minéral est soumis au traitement de réduction sélective et refroidissement. Le nouveau procédé de lixiviation ammoniacale, suivi de la séparation (7) liquide-solide et/ou extraction de nickel et/ou cobalt par extraction au solvant ou avec de la résine d'échange d'ions, permet de récupérer tout le nickel extractible et jusqu'à 130 % du cobalt obtenu à partir de la lixiviation ammoniacale standard.
Alvarez Villanueva German A.
Castellanos Suarez Jose
de La Cruz Fuxa Ana Maria
Lobaina Urtafe Isabel
Martin Gonzalez Pilar
Centro de Investigaciones Para La Industria Minero-Metalurgica (
Macrae & Co.
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