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1. WO2010031137 - A HYDROMETALLURGICAL METHOD FOR LEACHING BASE METALS

Publication Number WO/2010/031137
Publication Date 25.03.2010
International Application No. PCT/AU2009/001245
International Filing Date 18.09.2009
Chapter 2 Demand Filed 04.05.2010
IPC
C22B 3/04 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3Extraction of metal compounds from ores or concentrates by wet processes
04by leaching
C22B 3/08 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3Extraction of metal compounds from ores or concentrates by wet processes
04by leaching
06in inorganic acid solutions
08Sulfuric acid
C22B 23/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
23Obtaining nickel or cobalt
CPC
C22B 23/043
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
23Obtaining nickel or cobalt
04by wet processes
0407Leaching processes
0415with acids or salt solutions except ammonium salts solutions
043Sulfurated acids or salts thereof
C22B 3/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
3Extraction of metal compounds from ores or concentrates by wet processes
04by leaching
Y02P 10/20
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
10Technologies related to metal processing
20Recycling
Applicants
  • MURRIN MURRIN OPERATIONS PTY LTD [AU]/[AU] (AllExceptUS)
  • O'CALLAGHAN, John [AU]/[AU] (UsOnly)
Inventors
  • O'CALLAGHAN, John
Agents
  • WRAYS
Priority Data
200890486819.09.2008AU
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A HYDROMETALLURGICAL METHOD FOR LEACHING BASE METALS
(FR) PROCÉDÉ HYDROMÉTALLURGIQUE PERMETTANT DE LIXIVIER DES MÉTAUX DE BASE
Abstract
(EN) A Hydrometallurgical method for leaching base metals, said method comprising the method steps of: i) combining an oxide ore material with a sulphide ore or concentrate in the presence of acid to form a slurry; and ii) leaching the slurry in a pressure acid leach (PAL) circuit to produce a leached autoclave discharge liquor, wherein the acid concentration in the slurry is sufficient to ensure some iron remains in its oxidised (ferric) form in the presence of the sulphide ore or concentrate.
(FR) La présente invention porte sur un procédé hydrométallurgique permettant de lixivier des métaux de base et comprenant les étapes consistant à : i) combiner un matériau de minerai oxydé avec un minerai sulfuré ou un concentré sulfuré en présence d'un acide pour former une pâte; et ii) lixivier la pâte dans un circuit de lixiviation acide sous pression (PAL) pour produire une liqueur résiduelle stérile lixiviée, la concentration d'acide dans la pâte étant suffisante pour garantir que fer reste sous sa forme oxydée (ferrique) en présence du minerai sulfuré ou du concentré sulfuré.
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