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WO2004046401A1 - Procede d'obtention de cuivre par pulverisation d'une masse fondue contenant du cuivre brut - Google Patents

Procede d'obtention de cuivre par pulverisation d'une masse fondue contenant du cuivre brut Download PDF

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Publication number
WO2004046401A1
WO2004046401A1 PCT/AT2003/000342 AT0300342W WO2004046401A1 WO 2004046401 A1 WO2004046401 A1 WO 2004046401A1 AT 0300342 W AT0300342 W AT 0300342W WO 2004046401 A1 WO2004046401 A1 WO 2004046401A1
Authority
WO
WIPO (PCT)
Prior art keywords
copper
melt
slag
gases
atomized
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/AT2003/000342
Other languages
German (de)
English (en)
Inventor
Alfred Edlinger
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.)
Patco Engineering GmbH
Original Assignee
Patco Engineering GmbH
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 Patco Engineering GmbH filed Critical Patco Engineering GmbH
Priority to AU2003277940A priority Critical patent/AU2003277940A1/en
Publication of WO2004046401A1 publication Critical patent/WO2004046401A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • 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
    • C22B15/003—Bath smelting or converting
    • C22B15/0041—Bath smelting or converting in converters
    • 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
    • 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 extracting copper from rich concentrate black copper or from copper stone or mat from copper and / or nickel smelting.
  • the raw copper extraction can in principle be carried out by pyrometallurgical or wet metallurgical methods.
  • the pyro-metallurgical process is melted by roasting according to various processes, such as floating roasting, copper stone or mat.
  • the product is a melt mixture of the most varied copper-iron-sulfur compounds, which also carry a number of accompanying metals and are particularly rich in precious metals. In some cases, the bond contains selenium instead of sulfur.
  • a melt oxidation process is usually used and the material is blown in the converter, the converter copper being contaminated by Cu 2 O.
  • This converter copper is also called raw or black copper and is usually blistered and is therefore often referred to as blister copper.
  • the invention now aims to provide a method of the type mentioned at the outset, with which an intermediate product for copper production, namely copper stone or mat powder, which is correspondingly finely comminuted and particularly favorable in granulation, is formed, which subsequently can be processed in a simple manner in a flash converter or to create a method with which a corresponding implementation or conversion can be carried out directly from rich concentrates or copper stone or mat without prior comminution.
  • an intermediate product for copper production namely copper stone or mat powder, which is correspondingly finely comminuted and particularly favorable in granulation
  • the method according to the invention essentially consists in that a rich concentrate, black copper and / or copper stone melt with an inert gas or oxidizing gases as the jacket of a gas jet is ejected and atomized.
  • a melt is sprayed or atomized, then by cooling the atomized droplets, a correspondingly fine-grained granulate can be formed, which overall can be comminuted much more cost-effectively than would be the case in a complex grinding process.
  • This applies all the more as copper stone or mat is usually present as a melt before it solidifies and is broken or ground.
  • melt is expelled as a jacket of the gases. Due to their rapid expansion, the gases expelled inside the tubular melt jacket cause an explosive disintegration of the melt jet into the finest droplets. The fineness of the droplets also increases their total surface area, thus intensifying the reaction with the gas.
  • the solidified material can subsequently be further processed, for which purpose it is preferably carried out that solidified fine particles are fed to a burner, sulfides converted to SO x and Fe to Fe x O y and are slagged with slag formers and Cu as blister copper or copper melt is removed or tapped separately from the slag.
  • a reaction can be carried out directly in the molten droplets, for which the method is carried out in such a way that the copper concentrate or copper stone melt is ejected and atomized into a reactor with oxidizing gases such as air, oxygen and / or steam is reacted, preferably with the oxidizing gases, slag formers, and with the atomized copper concentrate melt droplets in the reactor become.
  • oxidizing gases such as air, oxygen and / or steam
  • the use of steam has the advantage that the S0 2 partial pressure formed by oxidation can be further increased after steam condensation in the exhaust gas, '' so that a particularly high S0 2 yield and thus particularly favorable conditions for an S0 2 or H 2 S0 4 production are created.
  • the oxidation and the slagging can be carried out very close to the stoichiometric conditions and the use of oxidizing agents leads to the conversion of CuFeS to Cu + FeO + S0 in the case of the reaction with mat, H 2 being additionally formed when steam is used becomes.
  • the slagging leads to calcium ferrite if CaO is added and to Si0 2 if SiO is added
  • Fayalite with a total of the rich concentrate or copper stone, blister copper or raw copper with a copper content of>
  • the Peirce-Smith converter can turn the disadvantages of a high refractory wear, high maintenance costs, low oxidation efficiency and very dilute S0 2 in A bgas, or a separate flash converter process are saved, which granulation and grinding and would require reheating the copper stone.
  • the method according to the invention is carried out in a particularly simple manner in such a way that the oxidizing gases are injected via a lance and that slag formers such as CaO and / or SiO 2 are blown or sucked into a space surrounding the lance and delimited by a weir immersed in the melt. wherein the melt as - the oxidizing gases and the sucked-in slag formers, coaxial jacket surrounding ejected into the reactor, whereby subsequently the atomized and reacted with the slag formers melt is brought into a stove and the slag and the melt separately tapped or discharged become.
  • the method according to the invention can thus be carried out with particularly simple devices, as have already been proposed for the atomization of oxidic slags, it being possible for the corresponding chemical reactions to be carried out at the same time.
  • the quality of the raw copper or blister copper obtained can be increased further by adding oxidizing agents to the melt collected in the hearth or pan via floor nozzles for refinement.
  • An improvement in the energy balance can be achieved by using exhaust gases extracted from the stove to generate steam.
  • the invention is explained in more detail below on the basis of exemplary embodiments schematically shown in the drawing of a device suitable for carrying out the method according to the invention.
  • the drawing shows a schematic representation of a device for the comminution and granulation of melt, with which a chemical reaction can optionally also be carried out and a melt bath can be obtained again.
  • 1 shows a tundish in which molten concentrate, black copper or a Copper stone or matt melt is introduced.
  • a weir pipe 2 dips into the weld pool, which defines a corresponding annular gap between the lower edge of the weir pipe 2 and the bottom of the tundish 1.
  • a corresponding outlet opening 4 is provided in the bottom 3 of the tundish, through which the melt flows out into a cooling or reaction chamber 5 located underneath.
  • Appropriate inert gases or oxidizing gases are now optionally introduced via a lance 6 with a nozzle 7, steam also being able to be injected through this nozzle.
  • the gas jet emerges coated from the liquid melt into the chamber below, the chamber.
  • an annular nozzle 20 can be arranged in a ring surrounding the escaping melt jet, which can be supplied via line 21 with steam, which is expelled against the melt jet.
  • the starting material namely rich concentrate or copper stone or mat
  • sulfur is to be converted into sulfur dioxide in large quantities
  • the molten material discharged as a jacket of the gases can be oxidized accordingly with oxygen-containing gases and in particular with oxygen-enriched air.
  • the oxidation processes are exothermic, so that additional amounts of steam for controlling the temperatures can be injected via the lance 6.
  • slag formers can now be introduced directly from a metering device 9 or sucked in via the line 10.
  • slag formers primarily serve to convert the iron content in the copper stone or the molten mat to fayalite or ferritic melts, which float as slags on the correspondingly formed copper bath and in particular a blister copper bath.
  • the blister copper bath is indicated schematically in the reactor 5 by 11, whereas the floating liquid slag is designated by 12.
  • the exhaust gases formed can be used to generate steam, water being passed via the pump 13 and lines 14 via the cooling coils 15, which can be drawn off as steam via line 16. S0 2 can be withdrawn in high concentration from the chimney 17 and recovered.
  • Oxidizing agents can be injected via bottom nozzles 18 for refinement. If appropriate amounts of steam have been injected, H 2 formed can be post-burned to steam via lance 6. Additional oxygen is introduced via line 19, so that the heat of combustion can be used to generate steam.
  • this schematically illustrated device either allows only a correspondingly comminuted material for the subsequent conversion, that is to say combustion of the sulfur content and slagging of the metals other than copper, or else the necessary conversion under oxidation directly from the melt of the as yet unconverted material des. Sulfur content to make. Instead of a stove, a pan can naturally also be used. Although this leads to a discontinuous process, however, only very small investments are made when converting existing facilities.

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

Abstract

L'invention concerne un procédé d'obtention de cuivre à partir de substances hautement concentrées en cuivre, de cuivre brut ou d'une matte de cuivre provenant de la métallurgie du cuivre et/ou du nickel. Ce procédé consiste à éjecter et pulvériser une substance hautement concentrée en cuivre, du cuivre brut et/ou une matte de cuivre se présentant sous la forme d'une masse fondue, par une ouverture de sortie (4) ménagée dans le fond d'un panier de coulée (1), au moyen d'un gaz inerte ou de gaz oxydants, ladite masse fondue étant éjectée en tant qu'enveloppe d'un jet de gaz. Lesdits gaz sont introduits dans la masse fondue par l'intermédiaire d'une lance (6) pourvue d'un ajutage (1) et fixée dans un tube servant de barrage (2) qui est immergé dans la masse fondue. Le jet de gaz sort par l'ouverture de sortie, enveloppé par la masse fondue liquide, et pénètre dans la chambre (5) disposée en dessous de ladite ouverture, cette chambre étant de préférence configurée à la manière d'un four à sole de conversion.
PCT/AT2003/000342 2002-11-20 2003-11-13 Procede d'obtention de cuivre par pulverisation d'une masse fondue contenant du cuivre brut Ceased WO2004046401A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003277940A AU2003277940A1 (en) 2002-11-20 2003-11-13 Method for obtaining copper by spraying a melt containing a copper raw material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1746/2002 2002-11-20
AT0174602A AT412652B (de) 2002-11-20 2002-11-20 Verfahren zum gewinnen von kupfer

Publications (1)

Publication Number Publication Date
WO2004046401A1 true WO2004046401A1 (fr) 2004-06-03

Family

ID=32315089

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2003/000342 Ceased WO2004046401A1 (fr) 2002-11-20 2003-11-13 Procede d'obtention de cuivre par pulverisation d'une masse fondue contenant du cuivre brut

Country Status (3)

Country Link
AT (1) AT412652B (fr)
AU (1) AU2003277940A1 (fr)
WO (1) WO2004046401A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103645694A (zh) * 2013-11-28 2014-03-19 金隆铜业有限公司 Ps铜转炉吹炼过程智能决策与终点预报方法及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506557A (en) * 1947-04-03 1950-05-02 Bryk Petri Baldur Method for smelting sulfide bearing raw materials
DE4225010A1 (de) * 1991-07-29 1993-02-04 Inco Ltd Verfahren zum erschmelzen von kupfer
US5449395A (en) * 1994-07-18 1995-09-12 Kennecott Corporation Apparatus and process for the production of fire-refined blister copper
EP1038976A1 (fr) * 1999-03-24 2000-09-27 Holderbank Financiere Glarus Ag Procédé pour granuler et pulvériser des laitiers ou métaux en fusion
US6210463B1 (en) * 1998-02-12 2001-04-03 Kennecott Utah Copper Corporation Process and apparatus for the continuous refining of blister copper
US6238457B1 (en) * 1996-10-01 2001-05-29 Outokumpu Oyj Method for feeding and directing reaction gas and solids into a smelting furnace and a multiadjustable burner designed for said purpose

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758627A1 (de) * 1968-07-09 1971-03-18 Humphreys & Glasgow Ltd Verfahren zur Herstellung von Kupfer aus sulfidischen Kupfererzen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506557A (en) * 1947-04-03 1950-05-02 Bryk Petri Baldur Method for smelting sulfide bearing raw materials
DE4225010A1 (de) * 1991-07-29 1993-02-04 Inco Ltd Verfahren zum erschmelzen von kupfer
US5449395A (en) * 1994-07-18 1995-09-12 Kennecott Corporation Apparatus and process for the production of fire-refined blister copper
US6238457B1 (en) * 1996-10-01 2001-05-29 Outokumpu Oyj Method for feeding and directing reaction gas and solids into a smelting furnace and a multiadjustable burner designed for said purpose
US6210463B1 (en) * 1998-02-12 2001-04-03 Kennecott Utah Copper Corporation Process and apparatus for the continuous refining of blister copper
EP1038976A1 (fr) * 1999-03-24 2000-09-27 Holderbank Financiere Glarus Ag Procédé pour granuler et pulvériser des laitiers ou métaux en fusion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103645694A (zh) * 2013-11-28 2014-03-19 金隆铜业有限公司 Ps铜转炉吹炼过程智能决策与终点预报方法及装置

Also Published As

Publication number Publication date
ATA17462002A (de) 2004-10-15
AU2003277940A1 (en) 2004-06-15
AT412652B (de) 2005-05-25

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