Patent 2006236085

Process for extraction of nickel, cobalt, and other base metals from laterite ores by using heap leaching and product containing nickel, cobalt, and other metals from laterite ores

Abstract

(12) STANDARD PATENT APPLICATION (11) Application No. AU 2006236085 Al (19) AUSTRALIAN PATENT OFFICE (54) Title Process for extraction of nickel, cobalt, and other base metals from laterite ores by using heap leaching and product containing nickel, cobalt, and other metals from laterite ores (51) (21) (31) International Patent Classification(s) C22B 23/00 (2006.01) C22B 3/08 (2006.01) Application No: 2006236085 (22) Date of Filing: 2006.11.20 Priority Data Number 0505828-7 014060011923 (32) Date 2005.11.28 2006.10.30 (33) Country BR BR (43) (43) (71) (72) (74) Publication Date: Publication Journal Date: 2007.06.14 2007.06.14 Applicant(s) Companhia Vale Do Rio Doce Inventor(s) de Araujo Gobbo, Oliver Renato;De Pontes Pereira, Geysa Santos Agent Attorney Davies Collison Cave, 1 Nicholson Street, MELBOURNE, VIC, 3000 \O cl ABSTRACT 0 Z INVENTION PATENT RELATING TO A "PROCESS FOR EXTRACTION OF NICKEL, C- COBALT, AND OTHER BASE METALS FROM LATERITE ORES BY USING HEAP LEACHING AND PRODUCT CONTAINING NICKEL, COBALT, AND OTHER METALS 00 5 FROM LATERITE ORES." C' The present invention embodies a process for extraction of nickel, cobalt, and \D other metals from laterite ores by heap leaching, and of the product obtained as well, L C characterized by the fact that it is comprised of crushing agglomeration stacking (11II), and heap leaching (IV) stages, with this last stage being a continuous, counter- current, heap leaching system with two or more stages, comprised of two phases, one of which is composed of the ore (solute), and the other is composed of the leaching solution, or solvent, which are supplied at opposite ends of the series of stages and flow in opposite directions. Upon cessation of leaching in the last stage, its solute is removed and a new stage is introduced at the first position, formed by new ore (solute) to be leached by the solvent solution, which is introduced from the last stage, percolating or flowing through all the previous stages until it reaches the first stage, being separated if loaded with target metals (PLS). 2006236085 20 Nov 2006 -DIAGRAM 2 ROM Primary Crushing Secondary Crushing 50,0mm Terciary Crushing 12,5mm ii 1 HSOII, Agglomeration water Binder I Sulfuric acid solution Stacking Heap Leaching Leached ore for final disposal PLS (Pregnant solution for Ni and Co extraction) IV

Information

Australian application number
2006236085
Country
BR
Status
Withdrawn
Type
Standard
Applicant
Vale S.A., SA (BR)
Application year
2006

International Patent Classification (IPC) codes

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ID Relationship
2011218742 Divisional child