CA2947480A1 - Procede permettant d'extraire de l'or et de l'argent a partir de minerais et de sous-produits d'exploitation miniere - Google Patents

Procede permettant d'extraire de l'or et de l'argent a partir de minerais et de sous-produits d'exploitation miniere Download PDF

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Publication number
CA2947480A1
CA2947480A1 CA2947480A CA2947480A CA2947480A1 CA 2947480 A1 CA2947480 A1 CA 2947480A1 CA 2947480 A CA2947480 A CA 2947480A CA 2947480 A CA2947480 A CA 2947480A CA 2947480 A1 CA2947480 A1 CA 2947480A1
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ppm
gold
silver
mining
temperature
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CA2947480A
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CA2947480C (fr
Inventor
Jack Goldstein
Liana Rozica Osanu
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Individual
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Individual
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals by wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
    • C22B3/14—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé permettant l'extraction de l'or et de l'argent à partir de minerais et de sous-produits d'exploitation minière. Le procédé selon l'invention consiste à traiter des minerais et des résidus d'exploitation minière présentant une teneur en or (Au) de 0,5 à 12 ppm avec une solution de thiosulfate d'ammonium, recyclé à une température comprise entre 15 et 25 °C; le filtrat obtenu après la solubilisation est soumis à une extraction électrolytique avec des électrodes en alliage noble avec une densité de courant comprise entre 200 et 250 A/m2, jusqu'à ce que l'électrolyte atteigne une concentration en or (Au) comprise entre 5 et 15 ppm, une concentration en argent (Ag) comprise entre 1 et 100 ppm et une concentration en cuivre (Cu) comprise entre 0,1 et 1,0 g/l; ensuite, le ciment séparé est filtré et dissous dans de l'ammoniac aqueux, séché à une température de 105 °C et fondu à une température de 1 200 °C, ce qui permet d'obtenir un alliage Au-Ag, qui est traité par les opérations de raffinage électrochimique et thermique, à partir desquelles on obtient de l'or et de l'argent de pureté élevée.
CA2947480A 2014-04-30 2015-04-24 Procede permettant d'extraire de l'or et de l'argent a partir de minerais et de sous-produits d'exploitation miniere Active CA2947480C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ROA201400335A RO129874B1 (ro) 2014-04-30 2014-04-30 Procedeu de extragere a aurului şi argintului din minereuri şi subproduse miniere cu conţinut scăzut de aur
ROA2014/00335 2014-04-30
PCT/RO2015/000008 WO2015171010A1 (fr) 2014-04-30 2015-04-24 Procédé permettant d'extraire de l'or et de l'argent à partir de minerais et de sous-produits d'exploitation minière

Publications (2)

Publication Number Publication Date
CA2947480A1 true CA2947480A1 (fr) 2015-11-12
CA2947480C CA2947480C (fr) 2026-03-31

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Also Published As

Publication number Publication date
RO129874B1 (ro) 2018-05-30
US20170044644A1 (en) 2017-02-16
WO2015171010A1 (fr) 2015-11-12
EP3155135A1 (fr) 2017-04-19
RO129874A0 (ro) 2014-11-28

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