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WO2004050925A1 - Procede de traitement de scories - Google Patents

Procede de traitement de scories Download PDF

Info

Publication number
WO2004050925A1
WO2004050925A1 PCT/FI2003/000898 FI0300898W WO2004050925A1 WO 2004050925 A1 WO2004050925 A1 WO 2004050925A1 FI 0300898 W FI0300898 W FI 0300898W WO 2004050925 A1 WO2004050925 A1 WO 2004050925A1
Authority
WO
WIPO (PCT)
Prior art keywords
copper
slag
leaching
blister
created
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/FI2003/000898
Other languages
English (en)
Inventor
Pekka Hanniala
Ilkka Kojo
Risto Saarinen
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.)
Outokumpu Oyj
Original Assignee
Outokumpu 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 Outokumpu Oyj filed Critical Outokumpu Oyj
Priority to AU2003283455A priority Critical patent/AU2003283455A1/en
Priority to EP20030775423 priority patent/EP1579017A1/fr
Priority to MXPA05005997A priority patent/MXPA05005997A/es
Priority to JP2004556365A priority patent/JP2006509103A/ja
Priority to BR0317061A priority patent/BR0317061A/pt
Priority to EA200500756A priority patent/EA200500756A1/ru
Priority to US10/536,631 priority patent/US20060037435A1/en
Publication of WO2004050925A1 publication Critical patent/WO2004050925A1/fr
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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • 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
    • C22B15/0026—Pyrometallurgy
    • C22B15/0054—Slag, slime, speiss, or dross treating
    • 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
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/0047—Smelting or converting flash smelting or converting
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • 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 defined in the preamble of claim 1 for treating the slag created in the production of blister copper.
  • the thermal value of the concentrate is generally the lower, the higher is the copper content of the concentrate. With a high copper content, the share of iron sulfide minerals is low.
  • a sufficiently high oxygen enrichment can be used, and as a result, the gas quantities can be kept moderate.
  • a concentrate with a lower copper content is suited in the production of blister copper, if it has a low iron content, in which case the created slag quantity is not remarkably large.
  • a two-step slag cleaning method includes either two electric furnaces or an electric furnace and a slag concentration plant. In the electric furnace, the slag is reduced by coke, so that the precious metals bound in the slag phase are reduced and separated as a distinctive copper phase underneath the slag layer. In case the slags are processed in a slag concentration plant, the slag concentrate can be fed back into the smelting reactor.
  • the blister copper is conducted to be refined in an anode furnace.
  • the iron content in the blister is still so high that there is often needed a separate treatment for the blister in a converter.
  • One method is electric furnace pretreatment, where the created blister copper is processed together with bulk blister in an anode furnace, but there is still left so much copper in the slag that it must for economical reasons be recovered by concentration-technical means.
  • the object of the invention is to introduce a new method for treating slag created in the production of blister copper produced directly of concentrate.
  • a particular object of the invention is to achieve a more effective and more advantageous way, with respect to overall economy, for recovering the slagging copper in the production of blister copper.
  • the invention is characterized by what is set forth in the characterizing part of claim 1.
  • Other preferred embodiments of the invention are characterized by what is set forth in the rest of the claims.
  • the method according to the invention has many advantages. According to the method, there is advantageously recovered the copper contained in the slag created in the production of blister copper that is produced directly of concentrate.
  • the method of the invention simplifies the recovery of copper, and in addition, the method enables an improved control of impurities.
  • the recovery of copper contained in hydrometallurgical slag reduces energy consumption in comparison with electric furnace reduction. In addition, gas and dust emissions are reduced in comparison with pyrometallurgical recovery.
  • Figure 1 illustrates a method according to the invention for processing the slag, i.e. blister slag, created in the production of blister copper produced in a suspension smelting furnace, such as a flash smelting furnace, in order to recover the copper, in which case at least part of the slag is leached in at least one step.
  • Copper concentrate, flux and oxygen enriched air are fed into smelting 1 in a suspension smelting furnace, such as a flash smelting furnace.
  • Dried concentrate particles react swiftly in hot suspension with oxygen enriched air. Energy that is released in the reactions is utilized in the process.
  • Part of the sulfur is oxidized into sulfur dioxide, and iron is oxidized into iron oxides, thus creating slag with the flux.
  • the reaction products are settled on the bottom of the suspension smelting furnace creating two separate molten phases: blister copper and blister slag.
  • the gases created in the process are conducted further, to be processed in a known fashion.
  • the blister copper created in the suspension smelting furnace is conducted into anode furnace treatment 2, refined there in a known fashion and cast into copper anodes.
  • the blister slag created in smelting 1 is tapped out of the suspension smelting furnace through the provided circulation channels, such as launders, and is further conducted to be treated in order to recover the copper contained in the blister slag.
  • First the blister slag is transferred to granulation and grinding 3.
  • Granulated blister slag is ground for example in wet grinding down to a given grain size in order to obtain more reactive surface.
  • leaching 4 the metals contained in the blister slag are leached.
  • the leaching 4 is carried out in oxidizing conditions with sulfuric acid, so that copper sulfate is created.
  • the amount of added sulfuric acid is advantageously 500 - 900 grams per one kilo of slag.
  • the leaching can also be carried out by an ammoniacal solution, a chloridic solution or as bacteria leaching.
  • copper is separated in copper precipitation 5.
  • copper is precipitated for example by hydroxide precipitation or sulfide precipitation.
  • hydroxide precipitation copper is precipitated by limestone, and the created copper-bearing precipitate is conducted back to smelting 1.
  • sulfide precipitation copper is precipitated by hydrogen sulfide, and the created copper-bearing precipitate is conducted back to smelting 1.
  • Copper can also be recovered in liquid-liquid extraction and electrolysis as cathode copper.
  • the total volume of water and added sulfuric acid was exactly one liter.
  • the solution temperature was 90° C.
  • the quantity of sulfuric acid (H 2 S0 4 ) that was added in the experiment was 806 g/1000 g slag.
  • the weight of the final precipitate was 77.4 g and copper content 3.1 %, which means that the total copper yield in the solution was 96.3%.
  • the experiment was repeated in similar conditions for slag that was, instead of slow cooling, granulated by water directly from the molten state, so that the obtained product was finely divided granule with a corresponding composition.
  • the obtained total leaching yield for copper in similar conditions was 95.8%, which is of the same order as with slowly cooled slag, when the accuracy of the analysis is taken into account.
  • copper was precipitated selectively by adjusting acidity, so that iron was precipitated in the first step and copper in the second step, and thus the non-desired iron could be separated from the copper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

L'invention concerne un procédé pour traiter des scories créées lors de la production de cuivre brut, traité directement à partir d'un concentré dans un four de fusion en suspension, tel qu'un four de fusion éclair, de façon à recouvrir le cuivre, de sorte qu'au moins une partie des scories est lixivié en une étape.
PCT/FI2003/000898 2002-12-05 2003-11-24 Procede de traitement de scories Ceased WO2004050925A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU2003283455A AU2003283455A1 (en) 2002-12-05 2003-11-24 Method for treating slag
EP20030775423 EP1579017A1 (fr) 2002-12-05 2003-11-24 Procede de traitement de scories
MXPA05005997A MXPA05005997A (es) 2002-12-05 2003-11-24 Metodo para el tratamiento de escoria.
JP2004556365A JP2006509103A (ja) 2002-12-05 2003-11-24 スラグの処理方法
BR0317061A BR0317061A (pt) 2002-12-05 2003-11-24 Método para tratamento de escória
EA200500756A EA200500756A1 (ru) 2002-12-05 2003-11-24 Способ обработки шлака
US10/536,631 US20060037435A1 (en) 2002-12-05 2003-11-24 Method for treating slag

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20022150A FI115638B (fi) 2002-12-05 2002-12-05 Menetelmä kuonan käsittelemiseksi
FI20022150 2002-12-05

Publications (1)

Publication Number Publication Date
WO2004050925A1 true WO2004050925A1 (fr) 2004-06-17

Family

ID=8565039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2003/000898 Ceased WO2004050925A1 (fr) 2002-12-05 2003-11-24 Procede de traitement de scories

Country Status (14)

Country Link
US (1) US20060037435A1 (fr)
EP (1) EP1579017A1 (fr)
JP (1) JP2006509103A (fr)
KR (1) KR20050085402A (fr)
CN (1) CN1720342A (fr)
AR (1) AR042301A1 (fr)
AU (1) AU2003283455A1 (fr)
BR (1) BR0317061A (fr)
EA (1) EA200500756A1 (fr)
FI (1) FI115638B (fr)
MX (1) MXPA05005997A (fr)
PE (1) PE20040630A1 (fr)
PL (1) PL376932A1 (fr)
WO (1) WO2004050925A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005007905A1 (fr) * 2003-07-17 2005-01-27 Outokumpu Technology Oy Procede de fusion de concentres de cuivre
RU2331677C2 (ru) * 2006-09-18 2008-08-20 Владимир Михайлович Сырочев Способ утилизации токсичных промышленных отходов
CN116555571A (zh) * 2023-04-27 2023-08-08 上海开鸿环保科技有限公司 危废污泥电热熔融资源化处理装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2053137A1 (fr) * 2007-10-19 2009-04-29 Paul Wurth S.A. Valorisation de résidus contenant du cuivre et d'autres métaux de valeur
FI120157B (fi) * 2007-12-17 2009-07-15 Outotec Oyj Menetelmä kuparirikasteen jalostamiseksi
CN102605191B (zh) * 2012-04-16 2013-12-25 阳谷祥光铜业有限公司 一种铜精矿直接生产粗铜的方法
KR101389430B1 (ko) * 2012-08-23 2014-04-25 엘에스니꼬동제련 주식회사 동제련 전로슬래그에서의 유가금속 회수처리 공정법
KR101502592B1 (ko) * 2013-04-12 2015-03-16 주식회사 삼삼 실리카 및 마그네시아 추출을 위한 슬래그의 처리방법
JP6363035B2 (ja) * 2015-02-27 2018-07-25 独立行政法人国立高等専門学校機構 銅スラグの処理方法
RU2614293C2 (ru) * 2015-06-04 2017-03-24 Общество с ограниченной ответственностью "Институт Гипроникель" Способ переработки низкоавтогенного сырья в печах взвешенной плавки

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632308A (en) * 1969-12-05 1972-01-04 Universal Oil Prod Co Recovery of copper values from slag
DE2348005A1 (de) * 1972-09-25 1974-07-25 Albright & Wilson Verfahren zur gewinnung von kupfer und/oder zink aus abfaellen
US4484730A (en) * 1982-09-30 1984-11-27 Iso "Metalurgkomplekt" Device for leaching copper from slags
WO2001049890A1 (fr) * 1998-12-30 2001-07-12 Outokumpu Oyj Procede de production de cuivre boursoufle dans un reacteur renfermant une suspension
CA2363969A1 (fr) * 2001-11-26 2003-05-26 Walter Curlook Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693405A (en) * 1952-06-20 1954-11-02 Sherritt Gordon Mines Ltd Method of separating copper values from and ammoniacal solution
US3224873A (en) * 1963-02-25 1965-12-21 Gen Mills Inc Liquid-liquid recovery of copper values using alpha-hydroxy oximes
US3928551A (en) * 1970-07-27 1975-12-23 American Cyanamid Co Leaching polyelectrolyte fluidized solids
US4034063A (en) * 1974-03-22 1977-07-05 Industrial Resources, Inc. Process for control of SOx emissions from copper smelter operations
US4152142A (en) * 1977-02-28 1979-05-01 Kennecott Copper Corporation Recovery of copper values from iron-containing ore materials as mined and smelted
NO156724C (no) * 1983-07-08 1987-11-11 Elkem As Fremgangsmaate ved utvinning av kobberinnholdet i sulfidiske malmer og konsentrater.
US5616168A (en) * 1994-02-28 1997-04-01 Kennecott Utah Copper Corporation Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper
FI114808B (fi) * 2002-05-03 2004-12-31 Outokumpu Oy Menetelmä jalometallirikasteen jalostamiseksi

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632308A (en) * 1969-12-05 1972-01-04 Universal Oil Prod Co Recovery of copper values from slag
DE2348005A1 (de) * 1972-09-25 1974-07-25 Albright & Wilson Verfahren zur gewinnung von kupfer und/oder zink aus abfaellen
US4484730A (en) * 1982-09-30 1984-11-27 Iso "Metalurgkomplekt" Device for leaching copper from slags
WO2001049890A1 (fr) * 1998-12-30 2001-07-12 Outokumpu Oyj Procede de production de cuivre boursoufle dans un reacteur renfermant une suspension
CA2363969A1 (fr) * 2001-11-26 2003-05-26 Walter Curlook Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005007905A1 (fr) * 2003-07-17 2005-01-27 Outokumpu Technology Oy Procede de fusion de concentres de cuivre
US7494528B2 (en) 2003-07-17 2009-02-24 Outotec Oyj Method for smelting copper concentrates
RU2331677C2 (ru) * 2006-09-18 2008-08-20 Владимир Михайлович Сырочев Способ утилизации токсичных промышленных отходов
CN116555571A (zh) * 2023-04-27 2023-08-08 上海开鸿环保科技有限公司 危废污泥电热熔融资源化处理装置
CN116555571B (zh) * 2023-04-27 2024-05-10 上海开鸿环保科技有限公司 危废污泥电热熔融资源化处理装置

Also Published As

Publication number Publication date
PL376932A1 (pl) 2006-01-09
MXPA05005997A (es) 2005-08-18
PE20040630A1 (es) 2004-11-11
FI115638B (fi) 2005-06-15
AR042301A1 (es) 2005-06-15
FI20022150A7 (fi) 2004-06-06
FI20022150A0 (fi) 2002-12-05
EP1579017A1 (fr) 2005-09-28
KR20050085402A (ko) 2005-08-29
EA200500756A1 (ru) 2005-12-29
JP2006509103A (ja) 2006-03-16
US20060037435A1 (en) 2006-02-23
BR0317061A (pt) 2005-10-25
AU2003283455A1 (en) 2004-06-23
CN1720342A (zh) 2006-01-11

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