PE20060226A1 - METHOD TO RECOVER GOLD - Google Patents

METHOD TO RECOVER GOLD

Info

Publication number
PE20060226A1
PE20060226A1 PE2005000442A PE2005000442A PE20060226A1 PE 20060226 A1 PE20060226 A1 PE 20060226A1 PE 2005000442 A PE2005000442 A PE 2005000442A PE 2005000442 A PE2005000442 A PE 2005000442A PE 20060226 A1 PE20060226 A1 PE 20060226A1
Authority
PE
Peru
Prior art keywords
chloride
leaching
copper
solution
suspension
Prior art date
Application number
PE2005000442A
Other languages
Spanish (es)
Inventor
Olli Hyvarinen
Matti Hamalainen
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 PE20060226A1 publication Critical patent/PE20060226A1/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
    • C22B11/04—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
    • C22B11/00—Obtaining noble metals
    • C22B11/06—Chloridising
    • 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

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

Abstract

A PARTIR DE UN PRODUCTO INTERMEDIO O RESIDUO DE LIXIVIACION, CONTENIENDO AZUFRE Y HIERRO GENERADOS EN LA LIXIVIACION ATMOSFERICA EN CLORURO DE UNA MATERIA PRIMA SULFUROSA. 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 ALCALI MANTENIENDO EL pH ENTRE 1 Y 1,6 DE MODO QUE EL HIERRO PERMANECE PRINCIPALMENTE 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 ALCALI EN (b) ES CLORURO DE COBRE (II) BASICO, NaOH, KOH, CaO, CaCO3 o MgO. EL ORO DISUELTO ES RECUPERADO USANDO CARBON ACTIVADO, MEDIANTE ELECTROLISIS O PRECIPITACION QUIMICAFROM AN INTERMEDIATE PRODUCT OR RESIDUE OF LEACHING, CONTAINING SULFUR AND IRON GENERATED IN THE ATMOSPHERIC LEACHING IN CHLORIDE OF A SULFUROUS RAW MATERIAL. 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 ALCALI KEEPING THE pH BETWEEN 1 AND 1.6 SO THAT THE IRON MAINLY REMAINS 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 ALKALI IN (b) IS BASIC COPPER (II) CHLORIDE, NaOH, KOH, CaO, CaCO3 or MgO. DISSOLVED GOLD IS RECOVERED USING ACTIVATED CARBON, THROUGH ELECTROLYSIS OR CHEMICAL PRECIPITATION

PE2005000442A 2004-04-30 2005-04-21 METHOD TO RECOVER GOLD PE20060226A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20040621A FI117709B (en) 2004-04-30 2004-04-30 Procedure for the extraction of gold

Publications (1)

Publication Number Publication Date
PE20060226A1 true PE20060226A1 (en) 2006-04-25

Family

ID=35185129

Family Applications (1)

Application Number Title Priority Date Filing Date
PE2005000442A PE20060226A1 (en) 2004-04-30 2005-04-21 METHOD TO RECOVER GOLD

Country Status (12)

Country Link
US (1) US20070245856A1 (en)
EP (1) EP1740730A1 (en)
CN (1) CN1950524A (en)
AP (1) AP2006003793A0 (en)
AR (1) AR049633A1 (en)
AU (1) AU2005238241A1 (en)
BR (1) BRPI0510505A (en)
CA (1) CA2564338A1 (en)
EA (1) EA009726B1 (en)
FI (1) FI117709B (en)
PE (1) PE20060226A1 (en)
WO (1) WO2005106052A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI118302B (en) * 2006-02-17 2007-09-28 Outotec Oyj Procedure for the extraction of gold
KR100787205B1 (en) 2007-06-11 2007-12-21 광해방지사업단 Method for recovering precious metal using seawater from mining waste
CN100582261C (en) * 2008-04-08 2010-01-20 昆明贵研药业有限公司 Method and device for reclaiming platinum-silver-iodine form platinum-containing silver iodide slag
FI124954B (en) * 2013-04-30 2015-04-15 Outotec Oyj A process for preparing a solution containing gold and a process arrangement for recovering gold and silver
TR201906828T4 (en) 2015-10-29 2019-05-21 Outotec Finland Oy The method for gold recovery.
CN105969990A (en) * 2016-06-20 2016-09-28 昆山鸿福泰环保科技有限公司 Method for adsorbing and recovering gold in activated carbon method
EP3822374B1 (en) * 2019-11-18 2023-10-04 Heraeus Deutschland GmbH & Co. KG Method for recovering pure metal
MX2023002015A (en) * 2020-08-18 2023-04-11 Enviro Metals Llc Metal refinement.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551213A (en) * 1984-05-07 1985-11-05 Duval Corporation Recovery of gold
AP538A (en) * 1992-06-26 1996-09-18 Intec Pty Ltd Production of metal from minerals
US5542957A (en) * 1995-01-27 1996-08-06 South Dakota School Of Mines And Technology Recovery of platinum group metals and rhenium from materials using halogen reagents
FI113667B (en) * 2002-04-23 2004-05-31 Outokumpu Oy Method for recovering gold

Also Published As

Publication number Publication date
FI117709B (en) 2007-01-31
AR049633A1 (en) 2006-08-23
CN1950524A (en) 2007-04-18
BRPI0510505A (en) 2007-10-30
EP1740730A1 (en) 2007-01-10
EA200601774A1 (en) 2007-04-27
AU2005238241A1 (en) 2005-11-10
AP2006003793A0 (en) 2006-10-31
US20070245856A1 (en) 2007-10-25
EA009726B1 (en) 2008-02-28
FI20040621A (en) 2005-10-31
WO2005106052A1 (en) 2005-11-10
CA2564338A1 (en) 2005-11-10

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Legal Events

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