US20040244534A1 - Method for the production of blister copper - Google Patents

Method for the production of blister copper Download PDF

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Publication number
US20040244534A1
US20040244534A1 US10/490,236 US49023604A US2004244534A1 US 20040244534 A1 US20040244534 A1 US 20040244534A1 US 49023604 A US49023604 A US 49023604A US 2004244534 A1 US2004244534 A1 US 2004244534A1
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US
United States
Prior art keywords
copper
slag
cao
sio
matte
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.)
Abandoned
Application number
US10/490,236
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English (en)
Inventor
Ilkka Kojo
Pekka Hanniala
Carlos Caballero Deramond
Cesar Acuna Rojas
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Outokumpu Oyj
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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
Assigned to OUTOKUMPU OYJ reassignment OUTOKUMPU OYJ ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ACUNA ROJAS, CESAR, CABALLERO DERAMOND, CARLOS, HANNIALA, PEKKA, KOJO, ILKKA
Publication of US20040244534A1 publication Critical patent/US20040244534A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • C22B15/0026—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
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0054—Slag, slime, speiss, or dross treating
    • 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

  • This invention relates to a pyrometallurgical method of producing blister copper in a smelting reactor, such as a suspension smelting furnace, directly from its sulfidic concentrate and/or finely ground copper matte.
  • a well-known method of the prior art is to produce raw copper or blister copper from a sulfidic concentrate in several stages, whereby the concentrate is smelted in a suspension reactor, such as a suspension smelting furnace, with air or oxygen-enriched air, which results in copper-rich matte containing 50-75 weight-% copper and slag.
  • a suspension reactor such as a suspension smelting furnace
  • air or oxygen-enriched air which results in copper-rich matte containing 50-75 weight-% copper and slag.
  • Copper matte formed in a suspension smelting furnace is converted in for example a Pierce-Smith type converter or a flash converter into blister copper and refined further in an anode furnace.
  • the copper content of the concentrate is high enough, typically at least 37 weight-% copper, as for example at the Olympic Dam smelter in Australia, where the copper content of the concentrate normally exceeds 40 weight-%, it is possible economically to produce blister directly in one stage.
  • the slag amount is moderate, but in order to produce blister, which has low sulphur content, less than 1 weight-% sulphur, the oxidation conditions must be selected so that the produced slag contains 15-25 weight-% copper.
  • Concentrate with a lower copper content can also be suitable for direct blister production, if it has an advantageous composition.
  • blister copper is produced from concentrate in one stage, since the iron content is low and the resulting amount of slag is not significantly high.
  • the production of copper in one stage with the normal concentrates causes slagging of all the iron and other gangues. This type of method is described in the U.S. Pat. No. 4,030,915.
  • the FI patent 104838 describes a method to produce blister copper in a suspension reactor directly from a sulfidic copper concentrate, whereby the concentrate, flux and oxygen-enriched air are fed into the reactor.
  • the cooled and finely-ground copper matte is fed into the suspension reactor along with the concentrate in order to bind the heat released from the concentrate and to decrease the amount of slag relatively, whereby the degree of oxygen enrichment of the air fed to the reactor is at least 50% oxygen.
  • This FI patent 104838 is however, limiting the process to areas, where the oxygen enrichment is higher than 50% oxygen and on the other hand the concentrate quality is limited to above 31% copper in a concentrate.
  • the patent is limited to use both iron silicate slag (essentially free from calcia) and calcium ferrite slag (essentially free from silicate) depending on the concentrate quality.
  • the PCT patent application WO 00/09772 describes a method of smelting copper sulphide concentrate by oxygen-smelting the copper sulphide concentrate, and removing most of the iron in the copper sulphide concentrate into slag as well as removing part or most of the sulphur therein as sulphur dioxide SO 2 , thereby obtaining copper from sulphide concentrate as white metal, nearly white metal matte or blister copper.
  • the object of that PCT patent application WO 00/09772 is to provide a copper sulphide concentrate smelting process for producing white metal or blister copper with continuous oxidation of copper sulphide concentrate or matte at the temperature of 1300° C.
  • the slag amount is more than doubled.
  • the highest CaO/SiO 2 ratio is 1.5.
  • the object of the invention is to eliminate drawbacks of the prior art and to achieve an improved method to produce blister copper or high grade matte in a suspension reactor directly from a sulfidic concentrate and/or finely ground copper matte wherein both silica (SiO 2 ) and lime (CaO) bearing materials are also fed in order to form a slag, which is fluid at the temperature range of 1250-1350° C.
  • silica (SiO 2 ) and lime (CaO) bearing materials are also fed in order to form a slag, which is fluid at the temperature range of 1250-1350° C.
  • a copper sulphide concentrate and/or copper matte with oxygen-containing gas is fed into a smelting reactor, such as a suspension smelting furnace, into which both silica (SiO 2 ) and lime (CaO) bearing materials are also fed in order to form a slag so that the CaO/SiO 2 ratio in the slag is higher than 1.5, and which slag is fluid at the temperature range of 1250-1350° C.
  • a smelting reactor such as a suspension smelting furnace
  • silica (SiO 2 ) and lime (CaO) bearing materials are also fed in order to form a slag so that the CaO/SiO 2 ratio in the slag is higher than 1.5, and which slag is fluid at the temperature range of 1250-1350° C.
  • Essential to the slag fluidity is that the slag also contains copper in oxidized form at least 6 weight percent.
  • the method of the invention is based on the fact that oxidized copper in slag fluxes effectively both magnetite and dicalcium silicate, which limits the applicability of the CaO—SiO 2 —FeO x slag in the copper smelting.
  • the sulphur content in copper is below 0.8 weight-%, part of the copper in the concentrate and/or in the finely ground matte is oxidized causing the fluxing effect, which allows the widening of the operation window, i.e.
  • the method of the invention produces blister copper or high grade matte in a smelting reactor from a mixture of copper concentrate and/or matte as well as silicate containing material and lime containing material.
  • the cooled and finely ground copper matte is fed into the smelting reactor in order to produce blister copper with lower than 1.0 weight-% sulphur and a relatively low amount of slag, in which the activity of lime is high in order to increase the slagging of arsenic and antimony, but in which the activity of silica is high in order to eliminate lead from the blister copper.
  • the finely ground matte fed into the blister furnace may be matte produced in any kind of known smelting furnace having a copper content of 60-78 weight-%.
  • a single suspension smelting unit may be designed directly as a blister smelter depending on the copper content and composition of the available concentrates and on the amount of the finely ground matte.
  • the slag is treated further in a single-stage or preferably two-stage slag cleaning.
  • the two-stage cleaning method includes either two electric furnaces or an electric furnace and a slag concentrating plant. If the slag is treated in a slag concentrating plant, the slag concentrate can be fed back into the smelting reactor. Blister copper goes for normal refining in an anode furnace.
  • the slag produced in the blister smelting stage can be preferably granulated and fed into the primary smelting furnace for copper recovery.
  • the economy of this depends on the amount of the concentrate in the feed mixture and on the slag amount produced.
  • the slag from the primary smelting furnace goes then to a normal single-stage slag cleaning or directly disposed (an electric furnace, a slag cleaning furnace or slag flotation) depending on the copper content of the slag.
  • FIG. 2 shows the distribution coefficient of arsenic between slag and blister copper in different slag types as a function of the normalized oxygen partial pressure in blister copper according to the example 1,
  • FIG. 3 shows the distribution coefficient of lead between slag and blister copper in different slag types as a function of the normalized oxygen partial pressure in blister copper according to the example 1,
  • Blister copper was produced in a suspension mini pilot smelting furnace in a series of tests, where the copper containing raw materials were finely grained copper matte (72.3 weight-% Cu, 3.4 weight-% Fe, 20.3 weight-% S) and copper concentrate (29.2 weight-% Cu, 33.7 weight-% S, 21.0 weight-% Fe).
  • the mixture of copper matte and concentrate (kg matte)/(kg matte+kg concentrate)*100 was ranging between 50-100%.
  • the feed rate was 100-200 kg/h.
  • the oxidation degree of blister copper produced was controlled by the oxygen coefficient (Nm 3 O 2 /ton of feed), and the slag composition (CaO/SiO 2 , Fe/SiO 2 in slag) was controlled by adding silica sand and lime to the feed. After each period, during which the process parameters were kept constant, the slag and blister were tapped out of the settler of the mini pilot furnace and the produced blister copper and slag was analysed. The average sulphur content of the blister was 0.2 weight-% sulphur (0.01-0.89% sulphur).
  • the one of the CaO/SiO 2 slag is higher at the same oxygen potential showing the much higher ability to remove arsenic from blister.
  • FIG. 3 shows the distribution coefficient of lead between slag and blister copper
  • L Pb (slag/Cu) (% Pb in slag)/(% Pb in blister) in different slag types as a function of normalized oxygen partial pressure in blister copper.
  • the CaO/SiO 2 ratio is higher than 1.5, the distribution coefficient of lead increases, when the CaO content in the system is decreasing.
  • the 200 cP viscosity temperature increases when the CaO content of the slag is decreasing. Based on theoretical calculations the solid magnetite formation is limiting the usability of this kind of slag as shown with the dashed line in FIG. 7.

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  • 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)
  • Processing Of Solid Wastes (AREA)
US10/490,236 2001-09-21 2002-09-20 Method for the production of blister copper Abandoned US20040244534A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20011859 2001-09-21
FI20011859A FI115536B (fi) 2001-09-21 2001-09-21 Menetelmä raakakuparin tuottamiseksi
PCT/FI2002/000748 WO2003025236A1 (en) 2001-09-21 2002-09-20 Method for the production of blister copper

Publications (1)

Publication Number Publication Date
US20040244534A1 true US20040244534A1 (en) 2004-12-09

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ID=8561932

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US10/490,236 Abandoned US20040244534A1 (en) 2001-09-21 2002-09-20 Method for the production of blister copper

Country Status (17)

Country Link
US (1) US20040244534A1 (pl)
EP (1) EP1436434A1 (pl)
JP (1) JP3828541B2 (pl)
KR (1) KR100929520B1 (pl)
CN (1) CN1295364C (pl)
AU (1) AU2002325965B2 (pl)
BR (1) BR0212651A (pl)
CA (1) CA2459962C (pl)
EA (1) EA005386B1 (pl)
FI (1) FI115536B (pl)
MX (1) MXPA04002601A (pl)
PE (1) PE20030425A1 (pl)
PL (1) PL197523B1 (pl)
RO (1) RO122640B1 (pl)
WO (1) WO2003025236A1 (pl)
YU (1) YU24704A (pl)
ZA (1) ZA200401902B (pl)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090293678A1 (en) * 2008-06-02 2009-12-03 Tatsuya Motomura Copper smelting method
RU2520292C1 (ru) * 2012-12-06 2014-06-20 Общество С Ограниченной Ответственностью "Медногорский Медно-Серный Комбинат" Способ переработки сульфидных медно-свинцово-цинковых материалов
WO2015173472A1 (en) * 2014-05-14 2015-11-19 Outotec (Finland) Oy A method of converting copper containing material
US9404167B2 (en) * 2010-09-10 2016-08-02 Jernkontoret Production of nano sized ferrite comprising oxidizing a molten slag
US9932682B2 (en) * 2013-03-07 2018-04-03 Pan Pacific Copper Co., Ltd. Method for manufacturing electrolytic copper
US20180119250A1 (en) * 2016-11-02 2018-05-03 Yanggu Xiangguang Copper CO., Ltd Method for smelting high-arsenic copper sulfide ore
RU2734613C2 (ru) * 2019-02-08 2020-10-21 Открытое акционерное общество "Научно-исследовательский и проектный институт обогащения и механической обработки полезных ископаемых "Уралмеханобр" Горизонтальный конвертер и способ совмещенной плавки-конвертирования

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7164200B2 (en) 2004-02-27 2007-01-16 Agere Systems Inc. Techniques for reducing bowing in power transistor devices
FI120157B (fi) * 2007-12-17 2009-07-15 Outotec Oyj Menetelmä kuparirikasteen jalostamiseksi
KR101005848B1 (ko) * 2008-02-01 2011-01-05 장광식 여성용 구두 뒷굽
JP4949342B2 (ja) * 2008-09-04 2012-06-06 パンパシフィック・カッパー株式会社 銅の製錬方法
SE533677C2 (sv) * 2009-04-05 2010-11-30 Boliden Mineral Ab Metod för att raffinera kopparbullion som innehåller antimon och/eller arsenik
JP6665443B2 (ja) * 2015-08-18 2020-03-13 住友金属鉱山株式会社 自熔製錬炉の操業方法
RU2639195C1 (ru) * 2016-12-02 2017-12-20 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Способ переработки никельсодержащих сульфидных медных концентратов
BE1025769B1 (nl) * 2017-12-14 2019-07-08 Metallo Belgium Verbeterde pyrometallurgische werkwijze

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251271A (en) * 1977-05-09 1981-02-17 Commonwealth Scientific And Industrial Research Organization Submerged injection of gas into liquid-pyrometallurgical bath
US4615729A (en) * 1985-03-20 1986-10-07 Inco Limited Flash smelting process
US5888270A (en) * 1994-06-30 1999-03-30 Mount Isa Mines Ltd. Copper converting
US6231641B1 (en) * 1998-02-12 2001-05-15 Kennecott Utah Copper Corporation Enhanced phase interaction at the interface of molten slag and blister copper, and an apparatus for promoting same
US20020043133A1 (en) * 2000-08-22 2002-04-18 Yasuo Ojima Method of smelting copper sulfide concentrate

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US1312115A (en) * 1919-08-05 Hoisting mechanism
SU1312115A1 (ru) * 1982-07-22 1987-05-23 Всесоюзный научно-исследовательский горно-металлургический институт цветных металлов Способ переработки медных и медно-цинковых сульфидных концентратов
FI78125C (fi) * 1983-11-14 1989-06-12 Vni Gorno Metall I Tsvet Met Foerfarande foer behandling av jaernhaltiga koppar- eller koppar/zinksulfidkoncentrat.
JP3682166B2 (ja) * 1998-08-14 2005-08-10 住友金属鉱山株式会社 硫化銅精鉱の熔錬方法
AU6792300A (en) 1999-08-23 2001-03-19 3Com Corporation Architecture for a network management service which identifies and locates usersand/or devices within an enterprise network
CA2395995C (en) * 2000-01-04 2010-05-25 Outokumpu Oyj Method for the production of blister copper in suspension reactor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251271A (en) * 1977-05-09 1981-02-17 Commonwealth Scientific And Industrial Research Organization Submerged injection of gas into liquid-pyrometallurgical bath
US4615729A (en) * 1985-03-20 1986-10-07 Inco Limited Flash smelting process
US5888270A (en) * 1994-06-30 1999-03-30 Mount Isa Mines Ltd. Copper converting
US6231641B1 (en) * 1998-02-12 2001-05-15 Kennecott Utah Copper Corporation Enhanced phase interaction at the interface of molten slag and blister copper, and an apparatus for promoting same
US20020043133A1 (en) * 2000-08-22 2002-04-18 Yasuo Ojima Method of smelting copper sulfide concentrate
US6843827B2 (en) * 2000-08-22 2005-01-18 Sumitomo Metal Mining Co., Ltd. Method of smelting copper sulfide concentrate

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090293678A1 (en) * 2008-06-02 2009-12-03 Tatsuya Motomura Copper smelting method
US8382879B2 (en) * 2008-06-02 2013-02-26 Pan Pacific Copper Co., Ltd. Copper smelting method
US9404167B2 (en) * 2010-09-10 2016-08-02 Jernkontoret Production of nano sized ferrite comprising oxidizing a molten slag
RU2520292C1 (ru) * 2012-12-06 2014-06-20 Общество С Ограниченной Ответственностью "Медногорский Медно-Серный Комбинат" Способ переработки сульфидных медно-свинцово-цинковых материалов
US9932682B2 (en) * 2013-03-07 2018-04-03 Pan Pacific Copper Co., Ltd. Method for manufacturing electrolytic copper
WO2015173472A1 (en) * 2014-05-14 2015-11-19 Outotec (Finland) Oy A method of converting copper containing material
EA033147B1 (ru) * 2014-05-14 2019-09-30 Оутотек (Финлэнд) Ой Способ конвертирования медьсодержащего материала
US10428404B2 (en) 2014-05-14 2019-10-01 Outotec (Finland) Oy Method of converting copper containing material
US20180119250A1 (en) * 2016-11-02 2018-05-03 Yanggu Xiangguang Copper CO., Ltd Method for smelting high-arsenic copper sulfide ore
RU2734613C2 (ru) * 2019-02-08 2020-10-21 Открытое акционерное общество "Научно-исследовательский и проектный институт обогащения и механической обработки полезных ископаемых "Уралмеханобр" Горизонтальный конвертер и способ совмещенной плавки-конвертирования

Also Published As

Publication number Publication date
EA200400266A1 (ru) 2004-10-28
EP1436434A1 (en) 2004-07-14
JP2005503481A (ja) 2005-02-03
CA2459962C (en) 2011-01-04
PL368532A1 (pl) 2005-04-04
JP3828541B2 (ja) 2006-10-04
FI20011859A0 (fi) 2001-09-21
CA2459962A1 (en) 2003-03-27
MXPA04002601A (es) 2004-06-07
BR0212651A (pt) 2004-08-24
WO2003025236A1 (en) 2003-03-27
KR100929520B1 (ko) 2009-12-03
CN1556867A (zh) 2004-12-22
FI20011859A (fi) 2003-03-22
PE20030425A1 (es) 2003-06-13
FI115536B (fi) 2005-05-31
AU2002325965B2 (en) 2008-01-24
RO122640B1 (ro) 2009-10-30
YU24704A (sh) 2006-08-17
EA005386B1 (ru) 2005-02-24
PL197523B1 (pl) 2008-04-30
KR20040029183A (ko) 2004-04-03
ZA200401902B (en) 2004-09-08
CN1295364C (zh) 2007-01-17

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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOJO, ILKKA;HANNIALA, PEKKA;CABALLERO DERAMOND, CARLOS;AND OTHERS;REEL/FRAME:015737/0786;SIGNING DATES FROM 20040119 TO 20040126

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