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1. WO1996041026 - CHLORIDE ASSISTED HYDROMETALLURGICAL EXTRACTION OF METAL

Publication Number WO/1996/041026
Publication Date 19.12.1996
International Application No. PCT/CA1996/000003
International Filing Date 04.01.1996
Chapter 2 Demand Filed 25.07.1996
IPC
C22B 3/06 2006.01
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
C22B 3/08 2006.01
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 3/26 2006.01
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
20Treatment or purification of solutions, e.g. obtained by leaching
26by liquid-liquid extraction using organic compounds
C22B 3/38 2006.01
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
20Treatment or purification of solutions, e.g. obtained by leaching
26by liquid-liquid extraction using organic compounds
38containing phosphorus
C22B 15/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
15Obtaining copper
CPC
C22B 11/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
11Obtaining noble metals
C22B 15/0067
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
15Obtaining copper
0063Hydrometallurgy
0065Leaching or slurrying
0067with acids or salts thereof
C22B 15/0069
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
15Obtaining copper
0063Hydrometallurgy
0065Leaching or slurrying
0067with acids or salts thereof
0069containing halogen
C22B 15/0071
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
15Obtaining copper
0063Hydrometallurgy
0065Leaching or slurrying
0067with acids or salts thereof
0071containing sulfur
C22B 15/0084
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
15Obtaining copper
0063Hydrometallurgy
0084Treating solutions
C22B 15/0089
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
15Obtaining copper
0063Hydrometallurgy
0084Treating solutions
0089by chemical methods
Applicants
  • COMINCO ENGINEERING SERVICES LTD. [CA]/[CA]
Inventors
  • JONES, David, L.
Agents
  • RUSSELL REYNEKE
Priority Data
08/488,12807.06.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CHLORIDE ASSISTED HYDROMETALLURGICAL EXTRACTION OF METAL
(FR) EXTRACTION HYDROMETALLURGIQUE DE METAL A L'AIDE DE CHLORURE
Abstract
(EN)
A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containig halogen ions and a source of bisulphate or sulphate ions, such as H2SO4. The metals which can be extracted by the process comprises copper as well as non-cuprous metals such as zinc, nickel and cobalt. During pressure oxidation the metal may be precipitated as an insoluble basic salt, such as basic copper sulphate or substantially completely solubilized and precipitated later as the basic metal salt.
(FR)
L'invention concerne un procédé pour extraire un métal d'un minerai ou d'un produit concentré. Ce procédé consiste à soumettre le minerai ou le concentrat à une oxydation sous haute pression en présence d'oxygène et d'une solution acide contenant des ions halogène et une source d'ions bisulfate ou sulfate, tel que du H2SO4. Parmi les métaux que l'on peut extraire par ce procédé, il convient de mentionner le cuivre, ainsi que des métaux non cuivreux, tel que le zinc, le nickel et le cobalt. Pendant l'oxydation sous haute pression, le métal peut être précipité sous la forme d'un sel alcalin insoluble, tel qu'un sulfate de cuivre de base, ou être sensiblement totalement solubilisé et précipité ensuite comme le sel de métal alcalin.
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