PROCEDURE FOR THE RECOVERY OF NICKEL AND COBALT BY LIXIVIATION IN BATTERIES OF MATERIAL CONTAINING NICKEL OR COBALT OF LOW GRADE.

摘要

Procedure for the recovery of nickel and cobalt from laterite ores, including the procedure the following steps: a) enrich the ore by purification, screening and classification to separate it into a fraction of enriched concentrated ore and a fraction of low grade waste thick, siliceous that is substantially free of fines and clay materials; b) separately process the concentrated ore fraction for the recovery of nickel and coba and c) subjecting the low grade waste fraction to a battery leaching process with a solution supplemented with acid to create a battery leach for the additional nickel and cobalt recovery processing, in which the enrichment waste fraction presents between 0.3% and 0.7% nickel and between 0.01% and 0.03% cobalt.