CN1820087A - Pyrometallurgical production of copper in converter - Google Patents

Pyrometallurgical production of copper in converter Download PDF

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Publication number
CN1820087A
CN1820087A CN03826952.XA CN03826952A CN1820087A CN 1820087 A CN1820087 A CN 1820087A CN 03826952 A CN03826952 A CN 03826952A CN 1820087 A CN1820087 A CN 1820087A
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CN
China
Prior art keywords
gas
melt
method steps
converter
slag
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.)
Granted
Application number
CN03826952.XA
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Chinese (zh)
Other versions
CN100357463C (en
Inventor
A·费尔茨维塞尔
S·瓦尔纳
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.)
Refractory Intellectual Property GmbH and Co KG
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Refractory Intellectual Property GmbH and Co KG
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Publication date
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Publication of CN1820087A publication Critical patent/CN1820087A/en
Application granted granted Critical
Publication of CN100357463C publication Critical patent/CN100357463C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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
    • C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining

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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)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a method for the pyrometallurgical production of copper in a converter. According to said method, gas is introduced into the respective molten charge during all steps thereof (charging the converter with cupriferous crude melt, treating the molten charge to obtain Cu2S and slag, removing the slag, converting Cu2S into Cu, emptying the converter).

Description

Be used for method at converter pyrogenic process metallurgical production copper
The present invention relates to a kind of method that is used at converter pyrogenic process metallurgical production copper.
When so-called blister copper is produced in pyrometallurgy, for example use matte and/or secondary raw materials as raw material.Target is that production purity is at least 96 weight %, preferably surpasses the so-called blister copper of 99 weight %.These people are made every effort to reach as far as possible purity near 100 weight % certainly.
The integral part that this copper is produced is made of the what is called in converter " conversion ".This converter is known with the name of Peirce Smith and Hoboken.
For this converter processing, at first copper bearing melt is filled in the converter and (is fed in the converter).
Impurity component, especially iron sulphide remove as far as possible fully or transfer in the slag in the treatment step of following.The purpose of this process (being also referred to as slag making) is: concise copper melts makes its overwhelming majority only by Cu 2S forms (being also referred to as " white metal ").
" slag making " comprises subsequently and removes slag from converter.
Now for from Cu 2The S melt is made blister copper, is known that secondary metallurgy (sekund  rmetallurgisch) method, wherein is blown into gas, especially oxygen (US 4830667) in melt.As far as possible fully remove for example nickel of sulphur and other impurity thus.By US4830667A as can be known, the nickel content that is higher than 1.0 weight % is unfavorable.
Bubble melt discharging from converter that will form thus at last.
This method is extensive use of, but it has some shortcomings.For example slag must be discharged by the opening for feed of this stove usually when " slag making ".The risk that has the valuable copper melts of loss thus.When needs obtained above-mentioned high purity, this method time length was longer.
Target of the present invention is to optimize currently known methods.Should carry out at shorter time and/or with high purity more by this method production of copper.
The present invention is for following consideration: do not carry out metallurgical processing during (charging) filled in converter in reactor.Described stove is only as " buffer zone " or " maintenance equipment ".The last process step of turning from converter for melt also is like this.
According to the present invention, this processing step is used for the secondary metallurgy of melt equally to be handled.In other words: when the converter charging, will handle gas and be passed in the metal melt (copper melts).This has following advantage, and promptly so-called " slag making " step almost begins simultaneously with " charging ", rather than just begins after the delay of for some time.Almost can bring into use converter for melting treatment from first second.
Up to melt from the moment that converter draws off all be like this.
During " slagging-off ", carry out the purge processing and have the advantage that to quicken to remove impurity composition and form slag.
In this method steps, use purge to handle and also have other effect: make the slag converter opening direction that on purpose leads by the autotelic activity of metal bath, and finally discharge at this opening part.Reach on the one hand for slag thus and be the more clean cut separation of melt on the other hand, thereby avoided observed melt loss in the prior art.
Therefore, the present invention relates to a kind of method that is used at converter pyrogenic process metallurgical production copper in its most general embodiment, and it has following feature:
A) with containing copper melts to the converter charging,
B) handle melt in following mode, promptly make impurity component be transformed in the slag, up to melt basically only by Cu 2S forms,
C) remove slag from converter,
D) to containing Cu 2Be blown into gas in the melt of S, preparing pure as far as possible copper melts by removing desulfuration,
E) in the device that the emptying converter connects to the downstream, wherein
F) method steps a), b), c) and e) during also can feed gas to separately melt.
Method steps a), b), c) with e) in used gas can with at method steps d) in used gas is the same is made up of oxygen basically or fully.Can use other gases equally, comprise rare gas element.
At method steps d) can on purpose reduce the oxygen part when finishing and partly come to substitute by rare gas element.Thus can be so that the content of oxygen the time be apparently higher than 50% in beginning, and when finishing near this method steps inert gas content above 50%.By this method can minimum copper (I) oxide compound content.At method steps e) in can continue to handle with rare gas element.
At method steps d) in actual chemical conversion process such as below listed:
。
Emptying with converter of 300 tons of blister coppers continues about 1 hour.Also should carry out air inlet (processing) according to the present invention in this empty stage to metal melt.Thus, the secondary metallurgy of copper melts is handled and can be carried out in whole conversion process.
The supply of one or more gases can be carried out through a plurality of gas blow-washing elements.Particularly by the processing of steel melt, known in recent decades this gas blow-washing element (gas blow-washing block).According to the present invention, can adopt this gas blow-washing element without a doubt.Both can use porous gas blow-washing element also can use nondirectional porous gas blow-washing element to this with orientation.First group is characterised in that, more or less is configured with linear slit or passage in this purge element, and wherein gas stream is through these slits or passage.Having nondirectional porous gas blow-washing element can design as " sponge ".Described gas must move through this object by the hole to the hole.
This gas blow-washing element (the perhaps gas bubbling device of nozzle type) can be separately or is used for the bottom and/or the wall of converter in groups.The present invention regulation, they can be separately, work together with the group that can select in advance or all.Each gas blow-washing element or gas blow-washing element group can be filled with gas with various or different air pressure thus.
To the corresponding gas regulator of this preferred disposition.Can regulate this gas regulator and make metal melt move in the following manner, promptly the buoyant slag keeps specific flow direction thereon, for example towards the direction of slag notch.
This method can be carried out as follows, promptly feeds (be blown into, spray into) a kind of (multiple) gas in the entire treatment step continuously in melt.
At this, both can change gas during managing step throughout, also can change gas volume or change air pressure.
For the converter that for example can hold 300 tons of blister coppers, 10 gas blow-washing elements can for example be installed in advance, respectively have for example 200 liters/minute purge speed.
Described method can significantly promote so that be equivalent to the purity pyrometallurgy production of copper that prior art also can be significantly higher than 99.5 weight % less.

Claims (10)

1. method that is used for the pyrometallurgy production of copper,
A) with containing copper melts to the converter charging,
B) handle melt in following mode, promptly make impurity component be transformed in the slag, up to melt basically only by Cu 2S forms,
C) remove slag from this converter,
D) to containing Cu 2Be blown into gas in the melt of S, preparing pure as far as possible copper melts by removing desulfuration,
E) emptying converter in the device that connects downstream, wherein
F) also can method steps a), b), c) and e) during feed gas to separately melt.
2. the process of claim 1 wherein method steps will form by oxygen basically in a) gas be passed in the melt.
3. the process of claim 1 wherein at method steps b) in will form by oxygen basically gas be passed in the melt.
4. the process of claim 1 wherein at method steps d) in will form by oxygen basically gas be passed in the melt.
5. the process of claim 1 wherein at method steps e) in will form by oxygen basically gas be passed in the melt.
6. the process of claim 1 wherein at least at method steps e) latter half in institute's gas supplied to small part be rare gas element.
7. the process of claim 1 wherein that the feeding of gas carries out through a plurality of gas blow-washing elements, but but its with the air pressure of the combination of preliminary election and/or preliminary election with utilize identical or different gas to feed.
8. the method for claim 7, the carrying out that wherein feeds gas should make at method steps c) in slag on purpose to the direction transmission of discharge opening.
9. the process of claim 1 wherein and during the entire method step, in melt, import gas continuously.
10. the method for claim 9, wherein gas feeds with difference composition, consumption and/or different air pressure during various method steps.
CNB03826952XA 2003-08-23 2003-08-23 Pyrometallurgical production of copper in converter Expired - Fee Related CN100357463C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2003/009367 WO2005021808A1 (en) 2003-08-23 2003-08-23 Method for the pyrometallurgical production of copper in a converter

Publications (2)

Publication Number Publication Date
CN1820087A true CN1820087A (en) 2006-08-16
CN100357463C CN100357463C (en) 2007-12-26

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CNB03826952XA Expired - Fee Related CN100357463C (en) 2003-08-23 2003-08-23 Pyrometallurgical production of copper in converter

Country Status (9)

Country Link
US (1) US20060236812A1 (en)
EP (1) EP1656464B1 (en)
JP (1) JP4477580B2 (en)
CN (1) CN100357463C (en)
AT (1) ATE350500T1 (en)
CA (1) CA2539011A1 (en)
DE (1) DE50306237D1 (en)
ES (1) ES2279232T3 (en)
WO (1) WO2005021808A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503456A1 (en) * 2006-03-27 2007-10-15 Mettop Metallurg Optimierungs PROCESS FOR PYROMETALLURGIC PRODUCTION OF COPPER
CL2008000116A1 (en) * 2008-01-15 2008-03-14 Univ De Chile 51 Empresa Nac D CONTINUOUS INTENSIVE PIROMETALURGICAL METHOD OF CONVERSION OF LIQUID COPPER MATA THAT INCLUDES FEEDING THIS KILL WITHIN THE FIRST OXIDATION REACTOR, SUPPLY GASES TO THE PACKED MILK AND SILICONE FLOODS, BLEED THE ESCORAL, FOOD METAL
DE502009000332D1 (en) * 2009-05-20 2011-03-03 Refractory Intellectual Prop Metallurgical melting and treatment unit
CN102605191B (en) * 2012-04-16 2013-12-25 阳谷祥光铜业有限公司 Method for directly producing row copper by copper concentrate

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941587A (en) * 1973-05-03 1976-03-02 Q-S Oxygen Processes, Inc. Metallurgical process using oxygen
CA1190751A (en) * 1982-06-18 1985-07-23 J. Barry W. Bailey Process and apparatus for continuous converting of copper and non-ferrous mattes
JPS61127835A (en) * 1984-11-26 1986-06-16 Sumitomo Metal Mining Co Ltd Blowing method of copper converter
CA1322659C (en) * 1987-03-23 1993-10-05 Samuel Walton Marcuson Pyrometallurgical copper refining
CA2041297C (en) * 1991-04-26 2001-07-10 Samuel Walton Marcuson Converter and method for top blowing nonferrous metal
US5215571A (en) * 1992-10-14 1993-06-01 Inco Limited Conversion of non-ferrous matte
US5360204A (en) * 1993-09-20 1994-11-01 Keibler-Thompson Corp. Boom and lance for removing slag from crucible
AUPM657794A0 (en) * 1994-06-30 1994-07-21 Commonwealth Scientific And Industrial Research Organisation Copper converting
DE10259434B3 (en) * 2002-12-19 2004-08-26 Refractory Intellectual Property Gmbh & Co.Kg Gas purging device for metallurgical melting vessels

Also Published As

Publication number Publication date
EP1656464A1 (en) 2006-05-17
DE50306237D1 (en) 2007-02-15
JP4477580B2 (en) 2010-06-09
EP1656464B1 (en) 2007-01-03
WO2005021808A1 (en) 2005-03-10
ES2279232T3 (en) 2007-08-16
CN100357463C (en) 2007-12-26
AU2003258656A1 (en) 2005-03-16
US20060236812A1 (en) 2006-10-26
ATE350500T1 (en) 2007-01-15
JP2007515549A (en) 2007-06-14
CA2539011A1 (en) 2005-03-10

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