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US20100071510A1 - Method for obtaining copper from cupriferous arsenosulphide and/or antimony sulphide ores or ore concentrates - Google Patents

Method for obtaining copper from cupriferous arsenosulphide and/or antimony sulphide ores or ore concentrates Download PDF

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Publication number
US20100071510A1
US20100071510A1 US12/519,907 US51990707A US2010071510A1 US 20100071510 A1 US20100071510 A1 US 20100071510A1 US 51990707 A US51990707 A US 51990707A US 2010071510 A1 US2010071510 A1 US 2010071510A1
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United States
Prior art keywords
copper
antimony
conversion
arsenic
sulfides
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Abandoned
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US12/519,907
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English (en)
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Alexander Beckmann
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    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C22B1/06—Sulfating roasting
    • 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
    • C22B15/0002—Preliminary treatment
    • C22B15/001—Preliminary treatment with modification of the copper constituent
    • 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
    • C22B15/0002—Preliminary treatment
    • C22B15/001—Preliminary treatment with modification of the copper constituent
    • C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
    • C22B15/0017—Sulfating or sulfiding roasting
    • 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
    • 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 present invention relates to a process for extracting copper from copper-bearing arsenic sulfide and/or antimony sulfide ores.
  • copper sulfide minerals By far the biggest part of the world's copper production (about 90%) is extracted from copper sulfide minerals.
  • copper sulfide minerals there may be mentioned, above all, chalcopyrite (CuFeS 2 ), bornite (Cu 5 FeS 4 ), cubanite (CuFeS 4 ), chalcosine (Cu 2 S), digenite (Cu 9 S 5 ), covelline (CuS), enargite (Cu 3 AsS 4 ), tennantite (Cu 12 As 4 S 13 ) and tetrahedrite (Cu 12 Sb 4 S 13 ).
  • chalcopyrite CuFeS 2
  • bornite Cu 5 FeS 4
  • cubanite CuFeS 4
  • chalcosine Cu 2 S
  • digenite Cu 9 S 5
  • covelline CuS
  • enargite Cu 3 AsS 4
  • tennantite Cu 12 As 4 S 13
  • tetrahedrite Cu 12 Sb
  • chalcopyrite is the most widespread mineral; therefore, it is of the greatest scientific and economic importance in the development of new extraction methods.
  • chalcopyrite and the above mentioned minerals are characterized by always containing deposited gold, silver, platinum metals and other rare metals as well as rare earths.
  • the copper/iron-sulfidic minerals are extracted from ores, which are usually milled and concentrated by a flotation process to yield an ore concentrate, whereby a substantial part of the silicates contained in the ground stock, in particular, is separated off.
  • copper-bearing ores additionally contain arsenic and antimony compounds, for example, enargite (Cu 3 AsS 4 ), tennantite (Cu 12 As 4 S 13 ) and tetrahedrite (Cu 12 Sb 4 S 13 ). These ores are difficult to process. In addition to the environmental problems occurring in the processing of such ores, the arsenic and antimony contents in higher levels are also damaging to the plants employed in the pyrometallurgical treatment.
  • arsenic and antimony compounds for example, enargite (Cu 3 AsS 4 ), tennantite (Cu 12 As 4 S 13 ) and tetrahedrite (Cu 12 Sb 4 S 13 ).
  • WO 01/44524 describes a process for extracting copper from chalcopyrite-containing ores in which the chalcopyrite-containing ores are converted to covelline, pyrite and accompanying substances by the addition of sulfur and then copper is extracted by leaching steps of the microbiological or chemical type.
  • the copper-bearing arsenic sulfide and/or antimony sulfide ores, ore concentrates or minerals are converted to arsenic and/or antimony sulfides and copper-containing sulfides using sulfur.
  • arsenic and/or antimony sulfides are physically separated from copper-containing sulfides at least partially at first.
  • At least 70 or 90%, more preferably at least 95%, by weight of the arsenic and antimony sulfides are separated.
  • copper can be extracted from the thus purified copper sulfide using pyrometallurgical and hydrometallurgical processes known to the skilled person, avoiding the problems normally arising from the presence of admixed arsenic or antimony sulfides.
  • the separation of the copper sulfides and arsenic or antimony sulfides is effected by grinding at first.
  • the separation can be effected by electrostatic processes, gravimetric processes, magnetic processes, air classification, grain size selection, a hydrocyclone, flotation processes or combinations thereof.
  • At least two separation methods are combined.
  • Another possibility is the selective heating of minerals with microwaves of different frequencies in order to alter the physical properties of individual minerals to enable their being separated off selectively, for example, by magnetic methods.
  • the ores employed according to the invention typically contain other metal components, especially rare earths, gold, silver, platinum, cobalt, nickel, zinc. Depending on the process control, these can migrate with either the arsenic or antimony sulfide phase or the copper sulfide phase, or be separated off in separate phases.
  • the precious metals for example, gold and silver
  • the copper-containing phase are preferably enriched almost completely by a diffusion process and thus can also be recovered almost completely among the other copper-sulfidic minerals particularly easily.
  • the pyrometallurgical processing includes a step referred to as “smelting”.
  • oxygen is blown into the molten material so that the following reactions proceed:
  • the thus obtained Cu is then typically freed from excess oxygen by adding reducing agents. Subsequently, electrorefining may also be used.
  • the arsenic or antimony sulfides obtained may be used for preparing arsenic or antimony; it is also possible to dispose of them.
  • the reaction is performed in an inert atmosphere.
  • the conversion is performed in a continuous process, preferably in a three-chamber system.
  • the reaction may be performed in a nitrogen atmosphere, for example, but also in argon or in a mixture of the inert gases. Flue gas may also be used, preferably SO 2 .
  • the grinding process is effected in a rotary kiln or in a fluidized bed reactor in situ by adding grinding balls, for example.
  • Typical reaction times are around 5 min to 24 h, preferably 5 min to 12 h, or 15 min to 24 h, or 0ö6.5 h to 24 h, especially from 5 to 90 or from 5 to 60 min.
  • the temperature is preferably ⁇ 500° C., more preferably ⁇ 475° C. or ⁇ 450° C. Temperatures of from 450 to 500° C. are particularly preferred.
  • the starting materials can be selected from copper-containing ores, ore concentrates or minerals, such as enargite (Cu 3 AsS 4 ), tennantite (Cu 12 As 4 S 13 ) and/or tetrahedrite (Cu 12 Sb 4 S 13 ), optionally accompanied by chalcopyrite (CuFeS 2 ), bornite (Cu 5 FeS 4 ), cubanite (CuFeS 4 ), chalcosine (Cu 2 S), digenite (Cu 9 S 5 ) and/or covelline (CuS).
  • enargite Cu 3 AsS 4
  • tennantite Cu 12 As 4 S 13
  • Cu 12 Sb 4 S 13 tetrahedrite
  • CuFeS 2 chalcopyrite
  • bornite Cu 5 FeS 4
  • cubanite CuFeS 4
  • chalcosine Cu 2 S
  • digenite Cu 9 S 5
  • covelline CuS
  • the amount of sulfur employed can be stoichiometric, half-stoichiometric or catalytic.
  • the copper-containing sulfides obtained may be covelline, chalcosine, digenite, bornite.
  • the arsenic and antimony sulfides are typically obtained as As 2 S 3 or asS and Sb 2 S 3 or SbS, respectively.
  • FIGS. 1 a and b show the conversion of an ore by the converting step employed according to the invention.
  • FIG. 1 a shows a chalcopyrite-containing ore
  • FIG. 1 b shows the converted ore: a pyrite core with a coat of covelline.
  • Arsenic and antimony are enriched in the pyrite.
  • FIGS. 2 a and b show a copper ore before and after the conversion.
  • FIG. 2 a shows the copper ore before the conversion; iron, copper and precious metals are homogeneously distributed
  • FIG. 2 b shows the copper ore after the conversion; copper and iron are separated, and the precious metals are enriched in the copper sulfide.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US12/519,907 2006-12-18 2007-12-18 Method for obtaining copper from cupriferous arsenosulphide and/or antimony sulphide ores or ore concentrates Abandoned US20100071510A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP06126410 2006-12-18
EP06126410.7 2006-12-18
EP07112231.1 2007-07-11
EP07112231 2007-07-11
PCT/EP2007/064148 WO2008074806A1 (de) 2006-12-18 2007-12-18 Verfahren zur gewinnung von kupfer aus kupferhaltigen arsenosulfidischen und/oder antimonsulfidischen erzen oder erzkonzentraten

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US20100071510A1 true US20100071510A1 (en) 2010-03-25

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US12/519,907 Abandoned US20100071510A1 (en) 2006-12-18 2007-12-18 Method for obtaining copper from cupriferous arsenosulphide and/or antimony sulphide ores or ore concentrates

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US (1) US20100071510A1 (es)
CL (1) CL2007003682A1 (es)
PE (1) PE20081241A1 (es)
WO (1) WO2008074806A1 (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785377A (zh) * 2015-05-06 2015-07-22 广西大学 一种砷黝铜矿抑制剂的制备方法
CN107208175A (zh) * 2014-12-16 2017-09-26 Fl史密斯公司 用于金属硫化物的高于常压的浸出的系统和方法
US9885095B2 (en) * 2014-01-31 2018-02-06 Goldcorp Inc. Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate
CN110331279A (zh) * 2019-07-12 2019-10-15 云南民族大学 一种微波焙烧硫化锑精矿直接挥发回收氧化锑的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105223338B (zh) * 2015-10-29 2017-01-18 陕西省地质矿产实验研究所 一种伴生钴的铜镍矿中镍和钴的化学物相分析方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762867A (en) * 1926-01-26 1930-06-10 Krupp Ag Grusonwerk Process for working up complex ores and metallurgical products
US3459535A (en) * 1966-03-07 1969-08-05 Sherritt Gordon Mines Ltd Treatment of copper bearing complex sulphides
US4276081A (en) * 1978-10-10 1981-06-30 Hazen Research, Inc. Process for beneficiating ores
US6592644B2 (en) * 1999-12-14 2003-07-15 Alexander Beckmann Sulfidization of sulfide ores for hydrometallurgical extraction of copper and other metals
US20080118421A1 (en) * 2006-09-20 2008-05-22 Hw Advanced Technologies, Inc. Method and means for using microwave energy to oxidize sulfidic copper ore into a prescribed oxide-sulfate product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI56196C (fi) * 1974-06-20 1979-12-10 Outokumpu Oy Foerfarande foer omvandlande av metallurgiskt skadliga komponenter i huvudsakligen sulfidiska komplex- och/eller blandmalmer och -koncentrat till en form laett att avlaegsna
SE8303184L (sv) * 1983-06-06 1984-12-07 Boliden Ab Forfarande for beredning av kopparsmeltmaterial och liknande ravaror innehallande hoga halter arsenik och/eller antimon

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762867A (en) * 1926-01-26 1930-06-10 Krupp Ag Grusonwerk Process for working up complex ores and metallurgical products
US3459535A (en) * 1966-03-07 1969-08-05 Sherritt Gordon Mines Ltd Treatment of copper bearing complex sulphides
US4276081A (en) * 1978-10-10 1981-06-30 Hazen Research, Inc. Process for beneficiating ores
US6592644B2 (en) * 1999-12-14 2003-07-15 Alexander Beckmann Sulfidization of sulfide ores for hydrometallurgical extraction of copper and other metals
US20080118421A1 (en) * 2006-09-20 2008-05-22 Hw Advanced Technologies, Inc. Method and means for using microwave energy to oxidize sulfidic copper ore into a prescribed oxide-sulfate product

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9885095B2 (en) * 2014-01-31 2018-02-06 Goldcorp Inc. Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate
CN107208175A (zh) * 2014-12-16 2017-09-26 Fl史密斯公司 用于金属硫化物的高于常压的浸出的系统和方法
CN104785377A (zh) * 2015-05-06 2015-07-22 广西大学 一种砷黝铜矿抑制剂的制备方法
CN110331279A (zh) * 2019-07-12 2019-10-15 云南民族大学 一种微波焙烧硫化锑精矿直接挥发回收氧化锑的方法

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Publication number Publication date
WO2008074806A1 (de) 2008-06-26
PE20081241A1 (es) 2008-11-01
CL2007003682A1 (es) 2008-07-04

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