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WO2009068735A1 - Procédé de traitement d'un concentré pyritique contenant de l'or, du cuivre et de l'arsenic - Google Patents

Procédé de traitement d'un concentré pyritique contenant de l'or, du cuivre et de l'arsenic Download PDF

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Publication number
WO2009068735A1
WO2009068735A1 PCT/FI2008/050672 FI2008050672W WO2009068735A1 WO 2009068735 A1 WO2009068735 A1 WO 2009068735A1 FI 2008050672 W FI2008050672 W FI 2008050672W WO 2009068735 A1 WO2009068735 A1 WO 2009068735A1
Authority
WO
WIPO (PCT)
Prior art keywords
copper
arsenic
gold
leaching
iron
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/FI2008/050672
Other languages
English (en)
Inventor
Jaakko Leppinen
Ville Miettinen
Mikko Ruonala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Corp
Original Assignee
Outotec Oyj
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 Outotec Oyj filed Critical Outotec Oyj
Priority to MX2010005599A priority Critical patent/MX2010005599A/es
Priority to AU2008328638A priority patent/AU2008328638B2/en
Priority to BRPI0819618 priority patent/BRPI0819618A2/pt
Priority to CA 2706414 priority patent/CA2706414C/fr
Publication of WO2009068735A1 publication Critical patent/WO2009068735A1/fr
Priority to ZA2010/03204A priority patent/ZA201003204B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
    • 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
    • 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
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • 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
    • 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
    • C22B11/02—Obtaining noble metals by dry processes
    • C22B11/021—Recovery of noble metals from waste materials
    • 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
    • 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
    • C22B11/08—Obtaining noble metals by cyaniding
    • 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
    • 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
    • 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
    • C22B15/0095—Process control or regulation methods
    • 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
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/30—Oximes
    • 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
    • C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
    • 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
    • C22B30/00—Obtaining antimony, arsenic or bismuth
    • C22B30/04—Obtaining arsenic
    • 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

Definitions

  • the invention relates to a method for processing pyritic copper sulphide concentrate, in which, in addition to copper, there is arsenic and fine gold or invisible gold bound to the sulphide minerals.
  • concentrate is leached into a chloride-based solution.
  • Raw material leaching is performed in conditions where the copper, iron and arsenic of the raw material dissolve, but the gold-containing material remains undissolved.
  • the chloride solution obtained is routed to neutralisation, in which the iron and arsenic in it are precipitated.
  • the purified copper solution is routed to liquid-liquid extraction. In the stripping stage of extraction, copper is transferred to a sulphate solution, which is routed to copper electrowinning. Gold is recovered from the leaching residue by some known method.
  • a method is described in WO patent application 2004/035840, which relates to the recovery of metals, in particular copper, from a copper-bearing raw material, where the material is leached into a chloride-containing solution.
  • Raw material leaching is performed acidically at a pH value of at least 1.5 and a redox potential of 480 - 500 mV vs. Ag/AgCI, so that the copper in the copper chloride solution exiting leaching is mostly divalent.
  • the sulphur contained in the concentrate is precipitated in elemental form, and also the iron precipitates.
  • the precious metals included in the concentrate do not dissolve but go into the leaching residue.
  • the leaching residue is subjected to sulphur flotation, whereby a sulphur concentrate is obtained, which also contains precious metals (gold + PGM).
  • a sulphur concentrate which also contains precious metals (gold + PGM).
  • the majority of the sulphur is separated from the sulphur concentrate by known methods and thus a PGM concentrate is formed containing precious metals.
  • the chloride solution formed in raw material leaching which contains copper and other possible valuable metals, is routed to liquid-liquid extraction. In extraction copper is transferred first to the organic phase by means of extraction, and in stripping to a sulphate solution, which is routed to copper electrowinning. There is no mention in the method of how any arsenic that may be contained in the raw material behaves or how gold-containing pyrite is recovered.
  • US patent 4,023,964 describes a method for fabricating copper.
  • copper sulphide concentrate is leached into a solution of copper (II) chloride and sodium chloride.
  • the NaCI concentration is 100-300 g/l and the pH value at most 1 , so that the iron dissolves.
  • the solution obtained, in which the majority of copper is monovalent is divided into two parts, one of which is subjected to iron precipitation as goethite by injecting air into the solution.
  • the cupric chloride solution formed during goethite precipitation is routed back to concentrate leaching.
  • the other part of the solution is contacted with the extraction solution. During extraction, air is introduced into the solution in order to oxidise the monovalent copper to divalent.
  • the copper is bound to the organic phase and the cupric chloride solution that is depleted with regard to copper is routed back to concentrate leaching.
  • the organic phase and the copper bound to it are contacted with an aqueous solution of sulphuric acid.
  • the copper sulphate solution that is formed is routed to fabrication of elemental copper and the organic phase back to the extraction stage.
  • the invention relates to a method for processing pyritic copper sulphide concentrate containing gold and/or platinum group metals (PGM) and arsenic, whereby the concentrate is leached into an aqueous solution of copper chloride and alkali chloride containing hydrochloric acid. It is typical of the method that the redox potential of the concentrate leaching is regulated to be in the range of 400 - 600 mV vs. Ag/AgCI electrode by means of the feed of an oxidising agent and the pH is adjusted to the range of 0.2 - 1 , whereupon the copper, iron and arsenic in the copper and arsenic minerals of the concentrate dissolve and the gold and/or PGM bound to these minerals is released.
  • PGM platinum group metals
  • the cupric chloride solution containing iron and arsenic that is formed is neutralised to precipitate the iron and arsenic, after which the neutralised iron- and arsenic- free cupric chloride solution is routed to the liquid-liquid extraction stage, where the copper is recovered into an aqueous solution of sulphuric acid, and is routed to electrolysis for recovery of elemental copper.
  • the raffinate formed in liquid-liquid extraction is fed back to concentrate leaching.
  • the leaching residue is subjected to sulphur flotation.
  • Sulphur concentrate or leaching residue containing gold and/or PGM is preferably routed to pyrometallurgical processing to recover the gold and/or PGM, in which case they are routed to a smelter or roasted.
  • the leaching residue may also be subjected to hydrometallurgical processing in the form of pressure leaching.
  • the iron- and arsenic-containing cupric chloride solution generated in copper sulphide concentrate leaching in accordance with the invention is neutralised to a pH value of 2 - 2.5 in order to precipitate the iron and arsenic out of the solution.
  • Neutralisation is preferably carried out by means of limestone, lime or lye.
  • Iron and arsenic are precipitated out of the solution as ferric arsenate and goethite or as ferric hydroxide.
  • the small amount of gold that may have dissolved in the leaching stage is precipitated back into the leaching residue by means of a reducing agent or adsorbent.
  • a typical adsorbent is activated carbon.
  • Pyritic bulk concentrate containing gold, copper and arsenic is fed to a leaching stage, in which leaching is performed using a solution of hydrochloric acid containing copper chloride and alkali chloride.
  • Leaching takes place generally in several stages, but for the sake of simplicity it is shown in the flow chart as a single stage. Leaching is carried out as countercurrent or concurrent leaching.
  • the redox potential of the leaching is regulated to be in the region of 400-600 mV vs. Ag/AgCI by means of oxygen or some other oxidant.
  • the acid concentration of the leaching stage is adjusted to be in the range of 20 - 100 g/l, so that the pH value is below 1 , but preferably at least 0.2. In these conditions, iron and arsenic dissolve, but sulphur precipitates.
  • gold refers to gold and/or platinum group metals (PGM).
  • the amount of alkali chloride in the solution used in leaching is around 100 g/l.
  • the alkali is preferably sodium.
  • the amount of alkali chloride is relatively low, because the copper in solution is divalent, so the required alkali chloride concentration is also low.
  • Leaching conditions are regulated to be such that the iron in the sulphide minerals contained in the concentrate, apart from the pyrite, dissolves, as does the arsenic contained in the concentrate.
  • the gold does not dissolve, but is released as the enargite and other arsenic minerals decompose, and the gold enters the leaching residue.
  • the leaching residue comprises gold, pyrite and the gold contained in it that is released as a result of the decomposition of the minerals, but not iron and arsenic. Therefore the quantity of leaching residue is relatively small and there are many possible ways to process it further.
  • Sulphur flotation can be performed on the leaching residue (not shown in the drawing), whereby concentrate is obtained that is formed of pyrite and sulphur, containing nearly all the gold of the concentrate used as feedstock.
  • the leaching residue may be treated without a sulphur concentration stage.
  • the gold content of the generated sulphur concentrate and/or of the leaching residue is so large, that it can be routed to pyrometallurgical processing. This may take place for instance in a smelter, in which case the recovery yield of precious metals is high.
  • the other possible further processing method is roasting, in which pyrite is oxidised and sulphur is burnt and gold is leached from the calcine with cyanide.
  • Leaching waste can likewise be processed hydrometallurgically by pressure leaching in an autoclave, whereupon the pyrite decomposes and the gold can be leached into cyanide with a good yield.
  • leaching is performed at the high acid concentration described above, the solution obtained in solids separation has to be neutralised before routing it to the extraction stage.
  • iron and arsenic removal from the solution are also carried out during neutralisation by precipitating them as ferric arsenate (FeAsO 4 2H 2 O).
  • the excess iron is precipitated in the same stage as goethite (FeOOH) or ferric hydroxide (Fe(OH) 3 ).
  • Precipitation is performed by neutralising the solution to a pH value of about 2 - 2.5.
  • Neutralisation is carried out by means of a suitable neutralising agent such as limestone, lime or lye (NaOH).
  • the divalent copper chloride solution cleaned of impurities and solids, is routed to extraction. Copper recovery from the organic solution is performed into an aqueous solution of sulphuric acid, which is fed to electrowinning to recover elemental copper. Since the known copper extractants are mostly selective with regard to divalent copper, the copper chloride solution can be fed directly to extraction without an oxidation stage.
  • the extraction stage is depicted in the drawing as a single step, but it consists of the extraction and stripping stages normally included in extraction.
  • an aqueous solution of cupric chloride is contacted with an organic extractant and the copper is made to transfer to the organic phase.
  • the extraction stage includes the normal mixing and settling section, although they are not shown in detail in the drawing.
  • Any known copper extractant is suitable as the extractant, such as oximes, which are diluted with an appropriate solvent, for example kerosene.
  • the organic solution exiting the extraction stages is conveyed via scrubbing to stripping.
  • stripping the organic solution containing divalent copper ions is contacted with an aqueous solution of sulphuric acid and the copper transfers to the aqueous phase as sulphate, from where it is recovered by electrowinning.
  • the electrolysis return acid can be used as the aqueous solution of sulphuric acid in stripping.

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

Abstract

L'invention concerne un procédé de traitement d'un concentré de sulfure de cuivre pyritique, dans lequel, outre le cuivre, il y a de l'arsenic et de l'or liés aux minéraux sulfurés, ou de l'or invisible. Dans le procédé, le concentré est lixivié dans une solution contenant un chlorure. La lixiviation du matériau brut est effectuée dans des conditions dans lesquelles le cuivre, le fer et l'arsenic du matériau brut se dissolvent, mais le matériau contenant de l'or reste non dissous. La solution de chlorure obtenue est soumise à une neutralisation, lors de laquelle sont précipités l'arsenic et le fer qu'elle contient. La solution de cuivre purifié est soumise à une extraction liquide-liquide, dans l'étape de lavage de laquelle le cuivre est transféré dans une solution de sulfate, qui est soumise à une électro-extraction du cuivre. L'or est récupéré à partir du résidu de lixiviation par un procédé connu quelconque.
PCT/FI2008/050672 2007-11-27 2008-11-20 Procédé de traitement d'un concentré pyritique contenant de l'or, du cuivre et de l'arsenic Ceased WO2009068735A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MX2010005599A MX2010005599A (es) 2007-11-27 2008-11-20 Metodo para procesar un concentrado piritico que contiene oro, cobre y arsenico.
AU2008328638A AU2008328638B2 (en) 2007-11-27 2008-11-20 Method for processing pyritic concentrate containing gold, copper and arsenic
BRPI0819618 BRPI0819618A2 (pt) 2007-11-27 2008-11-20 Método para o processamento de concentrado pirítico contendo ouro, cobre e arsênio
CA 2706414 CA2706414C (fr) 2007-11-27 2008-11-20 Procede de traitement d'un concentre pyritique contenant de l'or, du cuivre et de l'arsenic
ZA2010/03204A ZA201003204B (en) 2007-11-27 2010-05-06 Method for processing pyritic concentrate containing gold, copper and arsenic

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20070912 2007-11-27
FI20070912A FI120315B (fi) 2007-11-27 2007-11-27 Menetelmä pyriittisen, kultaa, kuparia ja arseenia sisältävän rikasteen käsittelemiseksi

Publications (1)

Publication Number Publication Date
WO2009068735A1 true WO2009068735A1 (fr) 2009-06-04

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Application Number Title Priority Date Filing Date
PCT/FI2008/050672 Ceased WO2009068735A1 (fr) 2007-11-27 2008-11-20 Procédé de traitement d'un concentré pyritique contenant de l'or, du cuivre et de l'arsenic

Country Status (9)

Country Link
AU (1) AU2008328638B2 (fr)
BR (1) BRPI0819618A2 (fr)
CA (1) CA2706414C (fr)
CL (1) CL2008003513A1 (fr)
FI (1) FI120315B (fr)
MX (1) MX2010005599A (fr)
PE (1) PE20091287A1 (fr)
WO (1) WO2009068735A1 (fr)
ZA (1) ZA201003204B (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101817553A (zh) * 2010-04-02 2010-09-01 云南锡业集团（控股）有限责任公司 一种含砷烟尘的处理方法
US8052774B2 (en) * 2009-03-31 2011-11-08 Sumitomo Metal Mining Co., Ltd. Method for concentration of gold in copper sulfide minerals
CN105734300A (zh) * 2014-12-08 2016-07-06 云南云铜锌业股份有限公司 一种从铜烟尘中回收铜、砷固化为臭葱石的方法
WO2016134420A1 (fr) * 2015-02-24 2016-09-01 Intec International Projects Pty Ltd Traitement de minerais sulfurés
RU2651017C1 (ru) * 2017-09-20 2018-04-18 Общество с ограниченной ответственностью "Золотодобывающая Корпорация" Способ выщелачивания пиритсодержащего сырья
CN108220618A (zh) * 2018-01-19 2018-06-29 中国地质科学院矿产综合利用研究所 一种高砷硫化铜矿的固砷提铜方法
US10060007B2 (en) * 2013-04-30 2018-08-28 Outotec (Finland) Oy Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
CN110216018A (zh) * 2019-05-28 2019-09-10 西北矿冶研究院 一种高泥细粒氧化铜矿的选矿方法
CN110256079A (zh) * 2019-06-26 2019-09-20 中国科学院地球化学研究所 一种高纯致密毒砂电极的制备方法
JP2019178406A (ja) * 2018-03-30 2019-10-17 Ｊｘ金属株式会社 銅鉱石の処理方法
CN112063833A (zh) * 2020-08-21 2020-12-11 向双清 一种铜精矿脱砷及抑制硫损失的方法
CN113088702A (zh) * 2021-04-01 2021-07-09 云南黄金矿业集团股份有限公司 一种从含金硫精矿焙烧渣酸浸液中回收有价元素方法
US11408053B2 (en) 2015-04-21 2022-08-09 Excir Works Corp. Methods for selective leaching and extraction of precious metals in organic solvents
CN114934170A (zh) * 2022-05-23 2022-08-23 江西理工大学 一种从铜电解黑铜泥中分离砷、锑及回收铜的方法

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* Cited by examiner, † Cited by third party
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CN111225988B (zh) * 2018-09-29 2022-04-29 长沙有色冶金设计研究院有限公司 硫化铜精矿的氧压浸出方法及铜冶炼方法
CN119307736B (zh) * 2024-10-12 2025-08-15 云南黄金矿业集团股份有限公司 一种含砷金硫铁矿有价成分综合回收方法

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US5820966A (en) * 1997-12-09 1998-10-13 Inco Limited Removal of arsenic from iron arsenic and sulfur dioxide containing solutions
WO2004035840A1 (fr) * 2002-10-15 2004-04-29 Outokumpu Oyj Procede de recuperation de metaux par lixiviation au chlorure et par extraction
US6746512B1 (en) * 1998-08-24 2004-06-08 Technological Resources Pty. Ltd. Hydrometallurgical extraction of copper and other valuable metals
WO2005106051A1 (fr) * 2004-04-30 2005-11-10 Outokumpu Technology Oyj Procede de recuperation d'or lie a la production de cuivre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820966A (en) * 1997-12-09 1998-10-13 Inco Limited Removal of arsenic from iron arsenic and sulfur dioxide containing solutions
US6746512B1 (en) * 1998-08-24 2004-06-08 Technological Resources Pty. Ltd. Hydrometallurgical extraction of copper and other valuable metals
WO2004035840A1 (fr) * 2002-10-15 2004-04-29 Outokumpu Oyj Procede de recuperation de metaux par lixiviation au chlorure et par extraction
WO2005106051A1 (fr) * 2004-04-30 2005-11-10 Outokumpu Technology Oyj Procede de recuperation d'or lie a la production de cuivre

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8052774B2 (en) * 2009-03-31 2011-11-08 Sumitomo Metal Mining Co., Ltd. Method for concentration of gold in copper sulfide minerals
CN101817553A (zh) * 2010-04-02 2010-09-01 云南锡业集团（控股）有限责任公司 一种含砷烟尘的处理方法
US10060007B2 (en) * 2013-04-30 2018-08-28 Outotec (Finland) Oy Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
CN105734300A (zh) * 2014-12-08 2016-07-06 云南云铜锌业股份有限公司 一种从铜烟尘中回收铜、砷固化为臭葱石的方法
WO2016134420A1 (fr) * 2015-02-24 2016-09-01 Intec International Projects Pty Ltd Traitement de minerais sulfurés
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ZA201003204B (en) 2011-06-29
AU2008328638A1 (en) 2009-06-04
PE20091287A1 (es) 2009-09-03
CA2706414C (fr) 2014-02-11
FI20070912A0 (fi) 2007-11-27
AU2008328638B2 (en) 2013-01-24
FI20070912L (fi) 2009-05-28
FI120315B (fi) 2009-09-15
CA2706414A1 (fr) 2009-06-04
BRPI0819618A2 (pt) 2015-05-05
CL2008003513A1 (es) 2009-06-05

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