PE20060225A1 - METHOD FOR THE RECOVERY OF GOLD IN CONNECTION WITH THE PRODUCTION OF COPPER - Google Patents

METHOD FOR THE RECOVERY OF GOLD IN CONNECTION WITH THE PRODUCTION OF COPPER

Info

Publication number
PE20060225A1
PE20060225A1 PE2005000441A PE2005000441A PE20060225A1 PE 20060225 A1 PE20060225 A1 PE 20060225A1 PE 2005000441 A PE2005000441 A PE 2005000441A PE 2005000441 A PE2005000441 A PE 2005000441A PE 20060225 A1 PE20060225 A1 PE 20060225A1
Authority
PE
Peru
Prior art keywords
copper
solution
chlorine
gold
leaching
Prior art date
Application number
PE2005000441A
Other languages
Spanish (es)
Inventor
Matti Hamalainen
Olli Hyvarinen
Original Assignee
Outokumpu Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Outokumpu Oy filed Critical Outokumpu Oy
Publication of PE20060225A1 publication Critical patent/PE20060225A1/en

Links

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
    • C22B11/06—Chloridising
    • 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
    • C22B11/042—Recovery of noble metals from waste materials
    • C22B11/044—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • C22B15/0067—Leaching or slurrying with acids or salts thereof
    • C22B15/0069—Leaching or slurrying with acids or salts thereof containing halogen
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0084—Treating solutions
    • C22B15/0089—Treating solutions by chemical methods
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

DONDE SE RECUPERA ORO A PARTIR DE UN PRODUCTO INTERMEDIO O RESIDUO DE LIXIVIACION, CONTENIENDO HIERRO Y AZUFRE GENERADOS EN LA LIXIVIACION ATMOSFERICA EN CLORURO DE UNA MATERIA PRIMA DE COBRE SULFUROSO CON AYUDA DE UNA SOLUCION ACUOSA DE CLORURO DE COBRE (II), CLORURO DE SODIO Y UN GAS CONTENIENDO OXIGENO. EL METODO COMPRENDE: a) LIXIVIAR EL ORO DESDE EL PRODUCTO INTERMEDIO O RESIDUO EN UNA SOLUCION ACUOSA DE CLORURO DE COBRE (II)-CLORURO DE SODIO EN CONDICIONES ATMOSFERICAS CON CLORO Y EL COBRE DIVALENTE CONTENIDO EN LA SOLUCION, SIENDO EL POTENCIAL DE OXIDACION-REDUCCION DE LA SUSPENSION QUE SE FORMA MANTENIDO DENTRO DEL LIMITE DE 650 Y 750 mV; Y, b) NEUTRALIZAR EL ACIDO GENERADO DURANTE LA DISOLUCION DEL AZUFRE, CON POR LO MENOS OXICLORURO DE COBRE (II) MANTENIENDO EL pH ENTRE 1 Y 1,6 DE MODO QUE EL HIERRO PERMANECE MAYORMENTE SIN DISOLVER. LA CANTIDAD DE COBRE DIVALENTE EN LA SOLUCION ES DE 20 A 80 g/L, Y LA DE CLORURO DE SODIO ES DE 200 A 330 g/L. LA TEMPERATURA ES MANTENIDA DENTRO DEL LIMITE DE 80°C Y EL PUNTO DE EBULLICION DE LA SUSPENSION. EL COBRE DE LA MATERIA PRIMA SE DISUELVE EN FORMA DE COBRE MONOVALENTE Y EL COBRE DIVALENTE GENERADO ES PRECIPITADO DESDE LA SOLUCION POR MEDIO DE UN ALCALI O TIERRA ALCALINA EN FORMA DEL OXICLORURO DE COBRE (II) GUIADO A (b). EL CLORO ES OBTENIDO DE UNA ELECTROLISIS DE ALCALI-CLORO. EL ORO DISUELTO ES RECUPERADO USANDO CARBON ACTIVADO, MEDIANTE ELECTROLISIS O PRECIPITACION QUIMICAWHERE GOLD IS RECOVERED FROM AN INTERMEDIATE PRODUCT OR RESIDUE OF LEACHING, CONTAINING IRON AND SULFUR GENERATED IN THE ATMOSPHERIC LEACHING IN CHLORIDE OF A RAW MATERIAL OF SULFUROUS COPPER WITH THE HELP OF A SOLUTION OF AQUOOD OF SULFIDE II, AQUOOD OF CHLORINE II AND A GAS CONTAINING OXYGEN. THE METHOD INCLUDES: a) LEACHING THE GOLD FROM THE INTERMEDIATE OR RESIDUAL PRODUCT IN AN AQUEOUS SOLUTION OF COPPER (II) CHLORIDE -SODIUM CHLORIDE UNDER ATMOSPHERIC CONDITIONS WITH CHLORINE AND THE DIVALENT COPPER CONTAINED IN THE SOLUTION, BEING- REDUCTION OF THE SUSPENSION THAT IS FORMED, KEPT WITHIN THE LIMIT OF 650 AND 750 mV; AND, b) NEUTRALIZE THE ACID GENERATED DURING THE DISSOLUTION OF THE SULFUR, WITH AT LEAST COPPER (II) OXYCHLORIDE, KEEPING THE pH BETWEEN 1 AND 1.6 SO THAT THE IRON REMAINS MOST UNSOLVED. THE QUANTITY OF DIVALENT COPPER IN THE SOLUTION IS FROM 20 TO 80 g / L, AND THAT OF SODIUM CHLORIDE IS FROM 200 TO 330 g / L. THE TEMPERATURE IS MAINTAINED WITHIN THE 80 ° C LIMIT AND THE BOILING POINT OF THE SUSPENSION. THE COPPER FROM THE RAW MATERIAL IS DISSOLVED IN THE FORM OF MONOVALENT COPPER AND THE DIVALENT COPPER GENERATED IS PRECIPITATED FROM THE SOLUTION BY MEANS OF AN ALKALI OR ALKALINE EARTH IN THE FORM OF THE COPPER OXYCHLORIDE (II) GUIDED TO (b). CHLORINE IS OBTAINED FROM AN ALKALI-CHLORINE ELECTROLYSIS. DISSOLVED GOLD IS RECOVERED USING ACTIVATED CARBON, THROUGH ELECTROLYSIS OR CHEMICAL PRECIPITATION

PE2005000441A 2004-04-30 2005-04-21 METHOD FOR THE RECOVERY OF GOLD IN CONNECTION WITH THE PRODUCTION OF COPPER PE20060225A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20040622A FI117708B (en) 2004-04-30 2004-04-30 Procedure for the extraction of gold in connection with the manufacture of copper

Publications (1)

Publication Number Publication Date
PE20060225A1 true PE20060225A1 (en) 2006-04-25

Family

ID=35185130

Family Applications (1)

Application Number Title Priority Date Filing Date
PE2005000441A PE20060225A1 (en) 2004-04-30 2005-04-21 METHOD FOR THE RECOVERY OF GOLD IN CONNECTION WITH THE PRODUCTION OF COPPER

Country Status (4)

Country Link
AR (1) AR049634A1 (en)
FI (1) FI117708B (en)
PE (1) PE20060225A1 (en)
WO (1) WO2005106051A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120315B (en) * 2007-11-27 2009-09-15 Outotec Oyj A process for treating a pyrite concentrate containing gold, copper and arsenic
CA3192359A1 (en) * 2020-08-18 2022-02-24 Enviro Metals, LLC Metal refinement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1063809A (en) * 1975-12-11 1979-10-09 Godefridus M. Swinkels Hydrometallurgical process for metal sulphides
US4551213A (en) * 1984-05-07 1985-11-05 Duval Corporation Recovery of gold
AT387587B (en) * 1986-10-31 1989-02-10 Austria Metall HYDROMETALLURGICAL METHOD FOR THE EXTRACTION OF SILVER FROM THE ANODE SLUDGE OF COPPER ELECTROLYSIS AND SIMILAR RAW MATERIALS
AP538A (en) * 1992-06-26 1996-09-18 Intec Pty Ltd Production of metal from minerals
FI113667B (en) * 2002-04-23 2004-05-31 Outokumpu Oy Method for recovering gold

Also Published As

Publication number Publication date
AR049634A1 (en) 2006-08-23
WO2005106051A1 (en) 2005-11-10
FI20040622A (en) 2005-10-31
FI117708B (en) 2007-01-31

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Legal Events

Date Code Title Description
FG Grant, registration
FD Application declared void or lapsed