WO2007087979A1 - Verfahren zur erzeugung einer schaumschlacke in einer metallischen schmelze - Google Patents
Verfahren zur erzeugung einer schaumschlacke in einer metallischen schmelze Download PDFInfo
- Publication number
- WO2007087979A1 WO2007087979A1 PCT/EP2007/000291 EP2007000291W WO2007087979A1 WO 2007087979 A1 WO2007087979 A1 WO 2007087979A1 EP 2007000291 W EP2007000291 W EP 2007000291W WO 2007087979 A1 WO2007087979 A1 WO 2007087979A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mixture
- slag
- furnace
- addition
- takes place
- Prior art date
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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/527—Charging of the electric furnace
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/54—Processes yielding slags of special composition
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C2005/5288—Measuring or sampling devices
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
- C21C2007/0062—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet
-
- 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
- C21C2300/00—Process aspects
- C21C2300/02—Foam creation
-
- 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 producing a foamed slag in a metallic melt in a metallurgical furnace, in which a mixture containing at least one metal oxide and carbon is introduced into the furnace, wherein below the slag located there, the metal oxide is reduced by the carbon and the in the reduction of gases formed in the slag form bubbles, whereby the slag is foamed.
- a method of the generic type is known from WO 2004/104232 A1.
- a foamed slag can be produced on a metallic melt, for example on a melt of stainless metal.
- a slag which may contain a high proportion of Cr oxide is formed. The concentration of this fraction often reaches values of more than 30%.
- Such slags can not be liquefied and foamed to the desired extent due to their composition with the previously known method.
- the metallic melt is added to a mixture containing at least one metal oxide and carbon.
- the mixture may comprise an iron carrier material and a binding material.
- the mixture can be pressed and added in the form of pellets or briquettes to the melt. If the mixture is introduced into the region between the metallic melt and the slag layer, it can chemically react there, using a reduction process of the metal oxide. This reduction process of the metal oxide with the carbon leaves gaseous carbon monoxide (CO), which causes a blistering and thus foams the slag.
- CO carbon monoxide
- the advantage of producing a foamed slag is as follows:
- the charge e.g. For example, the scrap to be melted is melted in the furnace by means of the arc of the electrodes.
- the slag fulfills a protective function due to the foamed state in addition to its primary function of removing unwanted constituents from the metallic melt.
- the foamed slag fills the space between the electrode ends and the metal surface at least partially and thus protects the refractory lining of the furnace from the radiant energy of the electric arc.
- the radiation of the arc is greatly reduced compared to the wall of the electric furnace and thus improves the energy input into the metallic melt.
- foamed slag has a soundproofing effect.
- the enveloped arc thus emits less noise into the environment, thereby improving the environmental conditions around the furnace.
- the invention is therefore based on the object to propose a method of the type mentioned, with which this disadvantage can be avoided.
- the foam-slag forming process should thus be controllable or controllable in a better manner, so as to be able to provide an optimum amount of foamed slag.
- This object is achieved by the invention in that the addition of the mixture comprising at least one metal oxide and carbon, in the oven so that a desired height or a desired range of the height of the layer of the foamed slag is formed or maintained.
- the height of the layer consisting of foamed slag is kept deliberately at a desired level, whereby the range of the height means a permissible tolerance range for the height of the foamed slag layer.
- the addition of the mixture can be carried out both continuously and at predetermined time intervals.
- a particular importance of the invention is to choose the correct dosage of the mixture. It has been found that optimum conditions for foam formation prevail when the addition of the mixture takes place in an amount of 3 to 20 kg per minute and per ton of metallic melt , Particularly preferably, the addition is between 5 to 15 kg per minute and per ton of metallic melt.
- a development of the invention therefore provides that the addition of the mixture takes place so that a mixture amount of 15 to 35 kg / m 2 is maintained on the surface of the metallic melt. This value is particularly preferably between 20 and 30 kg / m 2 .
- the mixture is advantageously introduced between the metallic melt and the slag.
- a metallurgical furnace is usually an electric arc furnace or
- Melting unit with electrodes for use in this case, it can be particularly preferably provided that in the plan view of the furnace substantially circular shaped wall and in a substantially central arrangement of at least one electrode of the furnace, the addition of the mixture takes place on a circular ring surface between the electrodes and the wall. It has proven to be advantageous if the addition of the mixture takes place in the region of the radial center of the annular surface.
- a mixture can be used which, in addition to the metal oxide and carbon, furthermore has a carrier material of iron and chromium. Furthermore, it may comprise a binding material. The handling of the mixture is facilitated if it is designed as a briquette or pellet.
- Fig. 3 shows the detail X of FIG. 1 and
- Fig. 4 shows the course of the height h of the layer of foamed slag over time.
- the electric arc furnace 3 shown in FIGS. 1 and 2 serves to melt metallic material, ie to produce a metallic melt 2.
- a layer of slag 1 which in the present case is to be foamed in order to achieve the abovementioned advantages ,
- a mixture is added via suitable feeders 7, which has a metal oxide and carbon. Furthermore, it may comprise an iron-containing carrier material and a binding material.
- the mixture is preferably pressed into briquettes or pellets.
- the dashed lines from the feeders 7 towards the melt 2 indicate how the pellets or briquettes are dropped onto the surface of the slag or melt.
- the specific weight or the density of the mixture 4 are chosen so that an optimal bubble formation takes place with regard to the strength of the reaction and the duration of the process.
- the specific weight is chosen so that the mixture 4 holds after entering the furnace 3 between the metallic melt 2 and the slag 1. This is indicated in Fig. 3, where it can be seen that although the pellets or briquettes of the mixture 4 sink below the foam slag 1, they float on the metallic melt 1.
- the foamed slag 1 has a height h which is to be maintained at a desired value or in a predetermined tolerance range.
- a corresponding amount of mixture 4 per time and based on the mass of the melt 2 is introduced into the furnace 3 according to the above specification. This can be done continuously or at predetermined time intervals.
- Fig. 4 is indicated that in At regular intervals mixture 4 in the furnace 3 and thus introduced or applied to the metallic melt 2 (s., The indicated by the reference numeral 4 arrows).
- Each addition of Mixture 4 results in a chemical reaction, the course of which is indicated by the dashed curves.
- the superimposition of all reactions leads to a total reaction, which leads to a defined height h of the foam layer.
- the height h is maintained within a tolerance range ⁇ h, as indicated in FIG.
- the intervals of the addition of the mixture 4 is chosen so that the most continuous possible bubble formation is ensured, which results from the superposition of the individual partial reactions.
- the reaction of the mixture is non-linear and the foamy slag is formed accordingly.
- the mixture 4 introduced between foamed slag 1 and metallic melt 2 undergoes a solution process with parallel reduction of the iron oxide.
- Mixture particles are enveloped immediately after their solution from the pellet or briquette because of the ambient temperature with a shell of solidified metal. Because the average melt temperature of the particle is lower than that of the metal, a melting process and the chemical reactions of the material within the shell take place. Depending on the temperature difference, the reaction within the shell will either end sooner than the melting of the shell or later. In the first case, the process may cause the particle to burst, resulting in an explosive release of a CO bubble. In other case, the CO bubble will develop freely in the metal.
- Optimum results can be obtained by adding between 5 and 15 kg of mixture per ton (1,000 kg) of metallic melt per minute.
- FIG. 2 also shows that the four feed devices 7 shown here apply the mixture to an annular surface of the slag 1 or of the metallic melt 2.
- the ring surface is formed radially inwardly by the circular imaginary envelope 8 of the electrode 6 or the electrodes (inner circle).
- the outer circle 9 of the annular surface is adjacent to the wall 5 of the furnace 3.
- the mixture is thus given up in a ring shape between the furnace wall 5 and the at least one electrode 6.
- the mixture 4 should preferably be applied approximately in the radial center between inner circle 8 and outer circle 9, as indicated in FIG. A corresponding alternative results from additions with the aid of laterally placed feed devices.
- the area-specific weight application of the mixture 4 has also been recognized as an essential parameter.
- a value is preferably proposed between 20 and 30 kg of mixture per square meter of the surface.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture Of Iron (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/223,416 US8043402B2 (en) | 2006-02-01 | 2007-01-15 | Method for the production of a foamed slag in a metal bath |
EP07702759A EP1979494A1 (de) | 2006-02-01 | 2007-01-15 | Verfahren zur erzeugung einer schaumschlacke in einer metallischen schmelze |
JP2008552708A JP5079710B2 (ja) | 2006-02-01 | 2007-01-15 | 金属溶融物に発泡スラグを生成する方法 |
AU2007211649A AU2007211649B2 (en) | 2006-02-01 | 2007-01-15 | Method for the production of a foamed slag in a metal bath |
MX2008009968A MX2008009968A (es) | 2006-02-01 | 2007-01-15 | Procedimiento para producir una escoria espumosa en una fundicion metalica. |
CA2637850A CA2637850C (en) | 2006-02-01 | 2007-01-15 | Method for the production of a foamed slag in a metal bath |
BRPI0707450-6A BRPI0707450A2 (pt) | 2006-02-01 | 2007-01-15 | processo para produção de uma escória espumada em um banho metálico |
KR1020087018075A KR101297589B1 (ko) | 2006-02-01 | 2007-01-15 | 금속욕에서의 거품 슬래그의 제조 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006004532.7A DE102006004532B4 (de) | 2006-02-01 | 2006-02-01 | Verfahren zur Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
DE102006004532.7 | 2006-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007087979A1 true WO2007087979A1 (de) | 2007-08-09 |
Family
ID=38268236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/000291 WO2007087979A1 (de) | 2006-02-01 | 2007-01-15 | Verfahren zur erzeugung einer schaumschlacke in einer metallischen schmelze |
Country Status (14)
Country | Link |
---|---|
US (1) | US8043402B2 (de) |
EP (1) | EP1979494A1 (de) |
JP (1) | JP5079710B2 (de) |
KR (1) | KR101297589B1 (de) |
CN (1) | CN101379201A (de) |
AU (1) | AU2007211649B2 (de) |
BR (1) | BRPI0707450A2 (de) |
CA (1) | CA2637850C (de) |
DE (1) | DE102006004532B4 (de) |
MX (1) | MX2008009968A (de) |
RU (1) | RU2418863C2 (de) |
UA (1) | UA94252C2 (de) |
WO (1) | WO2007087979A1 (de) |
ZA (1) | ZA200806791B (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009149679A1 (de) * | 2008-06-09 | 2009-12-17 | Sms Siemag Aktiengesellschaft | Verfahren zur erzeugung einer schaumschlacke auf austenitischen rostfreischmelzen in einem elektrolichtbogenofen |
WO2010003401A1 (de) * | 2008-07-07 | 2010-01-14 | Sms Siemag Aktiengesellschaft | Verfahren zur erzeugung von schaumschlacke |
DE102008045054A1 (de) | 2008-08-26 | 2010-03-04 | Sms Siemag Aktiengesellschaft | Verfahren zur Schaumschlackensteuerung einer Rostfreischmelze in einem Elektrolichtbogenofen |
EP2302080A1 (de) | 2009-09-29 | 2011-03-30 | SMS Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung der Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
US8747518B2 (en) | 2010-01-19 | 2014-06-10 | Sms Siemag Aktiengesellschaft | Method for foamed slag generation of a non-corrosive melt in a converter |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006529A1 (de) | 2007-02-09 | 2008-08-14 | Sms Demag Ag | Verfahren und Reduktion einer hochchromhaltigen Schlacke in einem Elektrolichtbogenofen |
DE102009020494A1 (de) | 2009-05-08 | 2010-11-11 | Sms Siemag Ag | Verfahren zum Schlackeschäumen einer Nichtrostfrei-Stahlschmelze in einem Elektrolichtbogenofen |
DE102010022692A1 (de) * | 2010-03-17 | 2011-09-22 | Sms Siemag Ag | Brikett zur Erzeugung eines Schaumschlacke-Effekts bei der EAF-Technologie der Edelstahlherstellung |
WO2011134052A1 (en) | 2010-04-26 | 2011-11-03 | Hatch Ltd. | Measurement of charge bank level in a metallurgical furnace |
CN102296144A (zh) * | 2010-06-25 | 2011-12-28 | 鞍钢股份有限公司 | 一种钢水扒渣方法 |
KR101229899B1 (ko) * | 2010-12-22 | 2013-02-05 | 주식회사 포스코 | 슬래그 포밍 촉진제 |
RU2511419C2 (ru) * | 2012-08-21 | 2014-04-10 | Генрих Алексеевич Дорофеев | Способ жидкофазного получения железа прямого восстановления |
FI126583B (fi) | 2014-03-31 | 2017-02-28 | Outotec Finland Oy | Menetelmä ja kantoaine pelkistimen kuten koksin kuljettamiseksi metallurgiseen uuniin ja kantoaineen tuotantomenetelmä |
DE102016104702B4 (de) | 2016-03-15 | 2018-03-22 | Steinbeis Transfer GmbH | Verfahren zur Herstellung von Schaumschlacke |
CN106871643B (zh) * | 2017-04-11 | 2019-03-05 | 攀钢集团研究院有限公司 | 钛渣冶炼炉及其监控方法 |
DE102021133577A1 (de) | 2021-12-17 | 2023-06-22 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen einer eisenbasierten Schmelze in einem elektrischen Einschmelzer |
WO2024086931A1 (en) * | 2022-10-25 | 2024-05-02 | Hatch Ltd. | Additive composition and method for chemically adjusting molten metal |
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DE2608320B1 (de) * | 1976-02-28 | 1977-07-14 | Demag Ag | Verfahren zum kontinuierlichen erschmelzen von stahl mit hohem reinheitsgrad |
EP0637634A1 (de) * | 1993-08-04 | 1995-02-08 | Voest-Alpine Industrieanlagenbau Gmbh | Verfahren zum Herstellen einer Metallschmelze |
EP0829545A1 (de) * | 1996-09-12 | 1998-03-18 | USINOR SACILOR Société Anonyme | Verfahren zum Erzeugen einer Schaumschlacke auf einer Rostfrei-Stahlschmelze in einem Elektroofen |
WO1999023264A1 (de) * | 1997-10-31 | 1999-05-14 | Siemens Aktiengesellschaft | Verfahren und einrichtung zur steuerung der schaumschlackebildung in einem lichtbogenofen |
WO2001072090A1 (en) * | 2000-03-17 | 2001-09-27 | Specialty Minerals (Michigan) Inc. | Process and apparatus for automatically controlling slag foaming |
WO2004104232A1 (de) * | 2003-05-24 | 2004-12-02 | Sms Demag Aktiengesellschaft | Verfahren zur erzeugung einer schaumschlacke auf hochchromhaltigen schmetzen in einem elektroofen |
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RU2103377C1 (ru) | 1995-05-19 | 1998-01-27 | Акционерное общество закрытого типа "Интермет-Сервис и К" | Шихта для приготовления материала для металлургического производства и способ его приготовления |
AT404942B (de) * | 1997-06-27 | 1999-03-25 | Voest Alpine Ind Anlagen | Anlage und verfahren zum herstellen von metallschmelzen |
CA2241574C (en) * | 1997-08-01 | 2004-01-06 | Exothermic Distribution Corporation | Composite briquette for electric furnace charge |
JP2000160227A (ja) * | 1998-11-26 | 2000-06-13 | Kyoei Steel Ltd | 廃棄物から得られた可燃性固形物の使用方法 |
JP2003105452A (ja) * | 2001-09-28 | 2003-04-09 | Kobe Steel Ltd | 還元金属の製造方法 |
JP4522336B2 (ja) * | 2005-07-20 | 2010-08-11 | トヨタ自動車株式会社 | シュレッダーダストの再利用方法及び製鋼用原燃料体 |
-
2006
- 2006-02-01 DE DE102006004532.7A patent/DE102006004532B4/de not_active Expired - Fee Related
-
2007
- 2007-01-15 WO PCT/EP2007/000291 patent/WO2007087979A1/de active Application Filing
- 2007-01-15 CN CNA200780004220XA patent/CN101379201A/zh active Pending
- 2007-01-15 MX MX2008009968A patent/MX2008009968A/es active IP Right Grant
- 2007-01-15 CA CA2637850A patent/CA2637850C/en not_active Expired - Fee Related
- 2007-01-15 EP EP07702759A patent/EP1979494A1/de not_active Withdrawn
- 2007-01-15 KR KR1020087018075A patent/KR101297589B1/ko active IP Right Grant
- 2007-01-15 JP JP2008552708A patent/JP5079710B2/ja not_active Expired - Fee Related
- 2007-01-15 UA UAA200810770A patent/UA94252C2/ru unknown
- 2007-01-15 US US12/223,416 patent/US8043402B2/en not_active Expired - Fee Related
- 2007-01-15 BR BRPI0707450-6A patent/BRPI0707450A2/pt not_active Application Discontinuation
- 2007-01-15 AU AU2007211649A patent/AU2007211649B2/en not_active Ceased
- 2007-01-15 RU RU2008135365/02A patent/RU2418863C2/ru not_active IP Right Cessation
-
2008
- 2008-08-06 ZA ZA200806791A patent/ZA200806791B/xx unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2608320B1 (de) * | 1976-02-28 | 1977-07-14 | Demag Ag | Verfahren zum kontinuierlichen erschmelzen von stahl mit hohem reinheitsgrad |
EP0637634A1 (de) * | 1993-08-04 | 1995-02-08 | Voest-Alpine Industrieanlagenbau Gmbh | Verfahren zum Herstellen einer Metallschmelze |
EP0829545A1 (de) * | 1996-09-12 | 1998-03-18 | USINOR SACILOR Société Anonyme | Verfahren zum Erzeugen einer Schaumschlacke auf einer Rostfrei-Stahlschmelze in einem Elektroofen |
WO1999023264A1 (de) * | 1997-10-31 | 1999-05-14 | Siemens Aktiengesellschaft | Verfahren und einrichtung zur steuerung der schaumschlackebildung in einem lichtbogenofen |
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WO2004104232A1 (de) * | 2003-05-24 | 2004-12-02 | Sms Demag Aktiengesellschaft | Verfahren zur erzeugung einer schaumschlacke auf hochchromhaltigen schmetzen in einem elektroofen |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009149679A1 (de) * | 2008-06-09 | 2009-12-17 | Sms Siemag Aktiengesellschaft | Verfahren zur erzeugung einer schaumschlacke auf austenitischen rostfreischmelzen in einem elektrolichtbogenofen |
US8409320B2 (en) | 2008-06-09 | 2013-04-02 | Sms Siemag Ag | Process for producing a foamed slag on austenitic stainless melts in an electric arc furnace |
WO2010003401A1 (de) * | 2008-07-07 | 2010-01-14 | Sms Siemag Aktiengesellschaft | Verfahren zur erzeugung von schaumschlacke |
CN102089446A (zh) * | 2008-07-07 | 2011-06-08 | Sms西马克股份公司 | 产生泡沫炉渣的方法 |
KR101258450B1 (ko) | 2008-07-07 | 2013-04-26 | 에스엠에스 지마크 악티엔게젤샤프트 | 거품 슬래그의 제조 방법 |
US8673047B2 (en) | 2008-07-07 | 2014-03-18 | Sms Siemag Ag | Process for producing foamed slag |
DE102008045054A1 (de) | 2008-08-26 | 2010-03-04 | Sms Siemag Aktiengesellschaft | Verfahren zur Schaumschlackensteuerung einer Rostfreischmelze in einem Elektrolichtbogenofen |
US8728194B2 (en) | 2008-08-26 | 2014-05-20 | Sms Siemag Ag | Method for controlling foamed slag in a stainless melt in an electronic arc furnace |
EP2302080A1 (de) | 2009-09-29 | 2011-03-30 | SMS Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung der Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
DE102009043639A1 (de) | 2009-09-29 | 2011-03-31 | Sms Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung der Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
US8747518B2 (en) | 2010-01-19 | 2014-06-10 | Sms Siemag Aktiengesellschaft | Method for foamed slag generation of a non-corrosive melt in a converter |
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DE102006004532B4 (de) | 2014-10-09 |
MX2008009968A (es) | 2008-10-17 |
CA2637850C (en) | 2012-03-20 |
KR101297589B1 (ko) | 2013-08-19 |
JP2009525402A (ja) | 2009-07-09 |
US20090255375A1 (en) | 2009-10-15 |
RU2008135365A (ru) | 2010-03-10 |
ZA200806791B (en) | 2009-05-27 |
AU2007211649A1 (en) | 2007-08-09 |
US8043402B2 (en) | 2011-10-25 |
CA2637850A1 (en) | 2007-08-09 |
RU2418863C2 (ru) | 2011-05-20 |
JP5079710B2 (ja) | 2012-11-21 |
EP1979494A1 (de) | 2008-10-15 |
KR20080097407A (ko) | 2008-11-05 |
AU2007211649A2 (en) | 2008-10-16 |
AU2007211649B2 (en) | 2011-06-09 |
CN101379201A (zh) | 2009-03-04 |
UA94252C2 (ru) | 2011-04-26 |
BRPI0707450A2 (pt) | 2011-05-03 |
DE102006004532A1 (de) | 2007-08-02 |
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