EP1062370B1 - Blaslanze mit gas/flüssigkeit-mischkammer und verfahren zu deren expansionskühlung - Google Patents
Blaslanze mit gas/flüssigkeit-mischkammer und verfahren zu deren expansionskühlung Download PDFInfo
- Publication number
- EP1062370B1 EP1062370B1 EP99907572A EP99907572A EP1062370B1 EP 1062370 B1 EP1062370 B1 EP 1062370B1 EP 99907572 A EP99907572 A EP 99907572A EP 99907572 A EP99907572 A EP 99907572A EP 1062370 B1 EP1062370 B1 EP 1062370B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lance
- gas
- melted mass
- liquid
- cooling
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- 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
- 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
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
- C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
-
- 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
- C21C2005/4626—Means for cooling, e.g. by gases, fluids or liquids
Definitions
- the invention relates to a method for cooling a Introducing a medium into a melt and / or for measuring lance provided by properties of the melt as well as a lance suitable for performing this method according to Preambles of claims 1 and 3.
- Lances for blowing media in the interior of metallurgical vessels such as Furnaces or converters and as a support for instruments for Measuring properties of the melt are known. you will be For example, to oxygenate a pig iron melt, for Blowing in media during steel treatment (e.g. coal for Foaming of the slag) and for measuring the temperature of the melt used.
- the invention has for its object a method and to create a lance of the type mentioned in the introduction, the or that enable effective and safe lance cooling.
- the method according to the invention is characterized in that that the gas / liquid mixture or its components under Pressure up to the area of the melt-side lance end is led and left to relax there.
- the melt-side lance end denotes that end of the Lance that faces the melt during operation or, if applicable, in this dips. It is the thermally highly stressed Lance end.
- the cooling circuit is for the melt side Lance end closed. There is none in this area Coolant leakage takes place, the coolant is in instead returned to a region of the lance spaced from the melt and exits the lance there.
- the coolant circuit overall can either be completely closed but you can also use an open cooling circuit which is spaced from the melt-side end the heated cooling medium emerging from the lance is not reused becomes.
- the gas content of the mixture used according to the invention is preferably air or an inert gas (for example nitrogen or argon), the liquid portion prefers water.
- the gas / liquid mixture is under pressure to the area of the melt-side lance end.
- region of the melt-side lance end denotes one near the corresponding lance end lying area, which is already highly stressed during operation is.
- the conceptual pair of “leadership under pressure up to let area of this end and then relax " is to be understood that in the area mentioned sudden drop in pressure of the gas / liquid mixture takes place.
- the invention is therefore only implemented to a corresponding pressure difference, not to the absolute Heights of the respective pressures. Let it relax (preferably by leaving a corresponding one Nozzle into a room of lower pressure) causes the liquid phase of the mixture torn into fine droplets and / or is evaporated.
- the two-phase mixture of gas and liquid can be spaced apart manufactured from the melt side lance end and as finished mixture under pressure fed to this end and there be relaxed. It is also possible to gas and Liquid separated under pressure up to the range of to lead the melt-side lance end and either to mix only shortly before the relaxation process or let it relax through separate jets, which are arranged so that the gas / liquid mixture during of the relaxation process arises in situ.
- gas and Liquid separated under pressure up to the range of to lead the melt-side lance end and either to mix only shortly before the relaxation process or let it relax through separate jets, which are arranged so that the gas / liquid mixture during of the relaxation process arises in situ.
- the method according to the invention requires considerably for cooling smaller amounts of liquid than that known in the prior art Water cooling.
- this has two advantages. On the one hand, you don't just use it for cooling the heat capacity of the liquid (water), but also the much greater heat of vaporization for the phase transition Liquid vapor and maintains even at proportionate low liquid flows a high cooling capacity.
- the liquid portion of the invention used cooling medium water. If you choose operating conditions, where the water content in the area of the melt side Part of the lance is largely or completely evaporated the cooling circuit is preferably fed with deionized water, for limescale deposits in the corresponding area of the Avoid cold room. Demineralized water is not available Available and must the cooling circuit with ordinary pipe or raw water are fed, you put the Gas / liquid flow is preferably such that a lower one Share of water in the area of the melt-side lance end evaporates, the rest remains as a finely divided aerosol. Unwanted limescale will be largely avoided.
- the high flow rate due to the relaxation process of the two-phase mixture does not tear evaporated water with, so that there is no stationary in the area of the lance tip Water can accumulate in the event of a melt collapse could lead to an explosion hazard.
- the gas / liquid mixture can be produced outside the lance and are already supplied as a mixture to the lance.
- the lance has a mixing chamber connected to the cooling circuit, has the connections for a gas and liquid supply and designed to produce a gas / liquid mixture is.
- the mixing chamber is spaced from the melt side Lance end arranged. It is preferably located in the part of the lance protruding from the furnace or converter.
- the gas / liquid mixture is preferred by the mixing chamber with a pressure of 2 to 6 bar, more preferably about 3 bar, through a pressure line to the melt end of the lance led out.
- a pressure line to the melt end of the lance led out.
- a two-component nozzle arranged, from which the mixture into one in the area the cooling chamber arranged at the tip of the lance relaxes.
- the term "Two-component nozzle” means any within the scope of the invention Devices that allow passage of a liquid / gas mixture allowed and a pressure difference between the supply and can maintain exit side so that a nozzle effect, d. H. a division of the fed Mixture in the area behind the nozzle lower pressure. When it comes out of the nozzle the liquid portion of the mixture is torn into fine droplets.
- the relaxed and heated mixture is replaced by a second line led away from the melt-side lance end and occurs at a preferably arranged outside the converter Connection out of the lance again.
- the pressure of the mixture after exiting the two-component nozzle (s) preferably slightly above atmospheric pressure.
- the lance used in diving operations it should be larger than the back pressure of the liquid surrounding the lance tip Melt. If there is a problem due to malfunctions Melting of the lance tip and a breakthrough of melt into the cold room is prevented by the excess pressure inside the further penetration of melt or slag if necessary.
- the mixing chamber advantageously has two concentric, the lance tube surrounding ring chambers in their radial partition connecting holes or openings are arranged.
- lance tube means that for the introduction of gas and / or solid into the melt provided inner tube of the entire lance assembly.
- the inner one The annular chamber can, for example, with water from its end face are applied, the outer annular chamber becomes circumferential pressurized with compressed air. Through the holes in the radial partition, compressed air is mixed into the water. The resulting mixture is on the melt side end removed and removed from the mixing chamber.
- the pressure line for connecting the mixing chambers and the two-fluid nozzle the lance tube is preferably concentric surrounding ring line.
- the return of the relaxed mixture preferably takes place from the melt-side lance end also through a ring line, which as a the pressure line concentrically surrounding second ring line is formed can be.
- a second embodiment of a lance according to the invention has separate pressure lines for the supply of gas on the one hand and liquid on the other hand towards the melt-side lance end on. These pressure lines can be concentric as the lance tube surrounding ring lines can be formed. In the area the pressure lines end at the melt-side lance end in nozzle arrangements, from which gas on the one hand and liquid on the other hand, exit and in situ, d. H. while of the relaxation process, into a finely divided aerosol mix. The suction effect of the relaxing gas pulls out leaking liquid and divides it into fine droplets. The flow rate of the in situ The aerosol produced is so high that it is not worth mentioning Amounts of water in the area of the melt-side lance end remain.
- the Operating pressures of this lance can be well below 3 bar lie.
- the necessary pressure in the gas line is, for example, 1 to 2 bar, preferably about 1.5 bar.
- the liquid (water) only needs one slight excess pressure of less than 1 bar, preferably about 0.5 bar to be supplied because they are in the aerosol formation of the relaxing compressed air is entrained and divided.
- a preferred field of application of the invention is treatment of or performing measurements on metallurgical Melting, e.g. pig iron or steel melting.
- metallurgical Melting e.g. pig iron or steel melting.
- the invention is not for use in molten metals limited, but can be used for further melt flows high temperature (e.g. glass melting) can be used.
- the lance according to FIGS. 1 and 2 has a inner lance tube 1, through which solids and / or gases be fed to the melt.
- the exit of this media in the melt takes place at the lance end 2 on the melt side Lance tube 1 is from one described in more detail below Cooling device surrounded.
- connection piece 3 cooling water is the lance tube 1 surrounding annular chamber 4 supplied.
- the inner annular chamber 5 is from an outer one Annular chamber 6 surrounded by a connector 7 with Compressed air is fed. Form the two annular chambers 5,6 together the mixing chamber.
- the radial partition 8 between the annular chambers 5 and 6 have connection holes indicated at 9 on. Compressed air and water mix together, the mixture is drawn axially into the interior Annular chamber 5 connecting ring line (pressure line) 10 to Lance end on the melt side.
- the pressure of the mixture in the pressure line 10 is approximately 3 bar.
- the ring line 10 is in the region of the melt-side end 2 of the lance to six evenly over the lance circumference distributed two-component nozzles 11 formed.
- the water / air mixture relaxes when exiting the two-component nozzles into the annular cooling space 12.
- the water is through this relaxation process torn into very fine droplets.
- the high surface of the water supplied favors one rapid heat absorption and thus a high cooling capacity.
- the Forming the ring line 10 to six two-component nozzles 11 allowed the operation of the lance with tap or process water as part of the cooling medium.
- the clear width of the two-substance nozzles 11 enables the passage of, if necessary, in the process water contained impurities or particles.
- the lance should only be operated with deionized water can, the ring line 10 in the area of the cooling chamber the cooling chamber 12 to an annular gap with a clear Width of about 0.5 mm can be narrowed, making the lance tube 1 rotationally symmetrical surrounds.
- This annular gap forms a single one Dual-substance nozzle.
- the formation of several discrete two-component nozzles 11 is not required in this case.
- the mixture emerging from the two-substance nozzles 11 hits on opposite (melt-side) end of the cooling chamber 12 on a curved cooling surface 13 through which it is in its Direction of movement deflected and the second ring line 14 trained coolant discharge line is supplied.
- the water content of the supplied mixture evaporates in the Cooling chamber 12 preferably completely. It comes with special Operating conditions at exceptionally high temperatures in the cooling chamber 12, the cooling effect may supported are caused by the strongly endothermic decay of part of the Water in molecular hydrogen and oxygen.
- the cooling chamber 12 to Melt opens out due to the use of the fine Aerosols as a cooling medium practically no danger that yet liquid water is enclosed by the melt and then evaporated explosively.
- the cold room 12 preferably set an overpressure sufficient to Diving operation of the lance possibly into the cooling chamber 12 to push back through molten metal or slag and prevent further intrusion.
- the cooling medium flowing back through the ring line 14 becomes via an annular chamber 15 and a connecting piece 16 from the Lance removed. It can either be rejected (more open Cooling circuit) or returned to the cooling circuit again become.
- the annular chamber 15 has a second connection 17 which with a safety pressure relief valve, not shown in the drawing connected is.
- the lance can also be used to introduce media into the melt also used to measure properties of the melt become.
- the melt side End 2 measuring instruments not shown in the drawing to be ordered.
- a radiation pyrometer can For example, the temperature of the melt can be measured.
- a Steel melt can, for example, by means of laser-induced emission spectroscopy a multi-element analysis can be carried out. In this way, for example, a steel finishing process can be measured be followed and ended at the desired stage.
- the lance with the attached measuring instrument in the area of the surface of the steel bath.
- Blown compressed air or an inert gas such as nitrogen Blown compressed air or an inert gas such as nitrogen, which on the one hand keeps the lance opening free and on the other hand removes slag from the steel bath surface.
- the lance according to the invention is through an opening in the wall or cover inserted into the converter or furnace.
- the connections for supply and discharge of the cooling media and the mixing chamber are preferably located outside of the converter in a correspondingly cooler area.
- 3 and 4 show a second embodiment of the invention, with the gas and liquid separated to the melt side Lance end 2 and the gas / liquid mixture only in situ during the relaxation process arises.
- the same reference numbers designate functionally here identical components in comparison with the embodiment 1 and 2.
- the main difference compared to the embodiment according to 1 and 2 is that around the inner lance tube 1 arranged around three concentric ring lines are.
- the inner ring line 18 leads to cooling water Lance end 2 on the melt side, it stands for this purpose the annular chamber 4 in connection.
- the middle ring line 19 is via the connection 7 and 9 with the connecting holes provided annular chamber 6 fed with compressed air.
- the outer Ring line 14 is used as in the first embodiment Return of the heated cooling medium to the annular chamber 15 and the associated connection 16.
- the operating pressure of this embodiment compared to the lance according to FIGS. 1 and 2 clearly can be reduced. So it is enough to achieve a finely divided Aerosols that flow through at high speed the annular chamber 12 passes through and is subsequently discharged will, from that water in the ring line 18 with an overpressure of 0.5 bar and the compressed air in the ring line 19 with a pressure of 1.5 bar.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Nozzles (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Air Bags (AREA)
- Noodles (AREA)
- Manufacturing And Processing Devices For Dough (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
- Fig. 1
- einen Längsschnitt durch eine erfindungsgemäße Lanze;
- Fig. 2
- einen Querschnitt entlang der Ebene A-A der Fig. 1
- Fig. 3
- einen Längsschnitt durch eine zweite Ausführungsform einer erfindungsgemäßen Lanze;
- Fig. 4
- einen Querschnitt entlang der Ebene A-A der Fig. 3.
Claims (10)
- Verfahren zum Kühlen einer zum Einbringen eines Mediums in eine Schmelze und/oder zum Messen von Eigenschaften der Schmelze vorgesehenen Lanze, bei der in einem zum schmelzeseitigen Lanzenende (2) hin geschlossenen Kühlkreislauf ein Gas/Flüssigkeitsgemisch als Kühlmedium geführt wird, dadurch gekennzeichnet, daß das Gas/Flüssigkeitsgemisch oder dessen Bestandteile unter Druck bis in den Bereich des schmelzeseitigen Lanzenendes (2) geführt und dort entspannen gelassen wird bzw. werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Gas/Flüssigkeitsgemisch in einer vom schmelzeseitigen Lanzenende (2) beabstandet angeordneten Mischkammer (5,6) der Lanze hergestellt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Gas/Flüssigkeitsgemisch unter einem Druck von 2 bis 6 bar, vorzugsweise etwa 3 bar zum schmelzeseitigen Lanzenende (2) geführt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Gas und Flüssigkeit getrennt zum schmelzeseitigen Lanzenende (2) geführt und dort entspannen gelassen werden, wobei während des Entspannungsvorgangs ein Gas/Flüssigkeitsgemisch in situ entsteht.
- Lanze zum Durchführen des Verfahrens nach Anspruch 2 oder 3, mit einem zum schmelzeseitigen Lanzenende (2) hin geschlossenen Kühlkreislauf, gekennzeichnet durch eine beabstandet vom schmelzeseitigen Lanzenende (2) angeordnete, mit dem Kühlkreislauf verbundene Mischkammer (5,6), die Anschlüsse (3,7) für eine Gas- und Flüssigkeitszufuhr aufweist und zum Herstellen eines Gas/Flüssigkeitsgemisches ausgebildet ist, wobei die Mischkammer (5,6) über eine Druckleitung (10) mit wenigstens einer im Bereich des schmelzeseitigen Endes (2) der Lanze angeordneten Zweistoffdüse (11) verbunden ist.
- Lanze nach Anspruch 5 , dadurch gekennzeichnet, daß die Mischkammer (5,6) zwei zueinander konzentrische, das Lanzenrohr umgebende Ringkammern (5,6) aufweist, in deren radialer Trennwand (8) Verbindungsbohrungen (9) angeordnet sind.
- Lanze nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Druckleitung eine das Lanzenrohr (1) konzentrisch umgebende Ringleitung (10) ist.
- Lanze nach Anspruch 7, dadurch gekennzeichnet, daß zur Rückführung des entspannten Gas/Flüssigkeitsgemisches vom schmelzeseitigen Lanzenende (2) zum Auslaß (16) des Gemisches aus der Lanze eine die Druckleitung (10) konzentrisch umgebende zweite Ringleitung (14) vorgesehen ist.
- Lanze zum Durchführen des Verfahrens nach Anspruch 4, mit einem zum schmelzeseitigen Lanzenende (2) hin geschlossenen Kühlkreislauf, gekennzeichnet durch zwei mit Anschlüssen (3,7) für eine Gas- und Flüssigkeitszufuhr verbundenen Druckleitungen (18,19), die zum getrennten Zuführen von Gas einerseits und Flüssigkeit andererseits zum schmelzeseitigen Lanzenende (2) hin ausgebildet sind und die im Bereich des schmelzeseitigen Lanzenendes (2) in Düsenanordnungen enden, durch die ein Gas/Flüssigkeitsgemisch in situ entsteht.
- Lanze nach Anspruch 9, dadurch gekennzeichnet, daß die Druckleitungen das Lanzenrohr (1) konzentrisch umgebende Ringleitungen (18,19) sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99907572A EP1062370B1 (de) | 1998-03-09 | 1999-02-26 | Blaslanze mit gas/flüssigkeit-mischkammer und verfahren zu deren expansionskühlung |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98104153A EP0947587A1 (de) | 1998-03-09 | 1998-03-09 | Blaslanze und Verfahren zu deren Kühlung |
EP98104153 | 1998-03-09 | ||
PCT/EP1999/001255 WO1999046412A1 (de) | 1998-03-09 | 1999-02-26 | Blaslanze mit gas/flüssigkeits-mischkammer und verfahren zu deren expansionskühlung |
EP99907572A EP1062370B1 (de) | 1998-03-09 | 1999-02-26 | Blaslanze mit gas/flüssigkeit-mischkammer und verfahren zu deren expansionskühlung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1062370A1 EP1062370A1 (de) | 2000-12-27 |
EP1062370B1 true EP1062370B1 (de) | 2001-12-05 |
Family
ID=8231556
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104153A Withdrawn EP0947587A1 (de) | 1998-03-09 | 1998-03-09 | Blaslanze und Verfahren zu deren Kühlung |
EP99907572A Expired - Lifetime EP1062370B1 (de) | 1998-03-09 | 1999-02-26 | Blaslanze mit gas/flüssigkeit-mischkammer und verfahren zu deren expansionskühlung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104153A Withdrawn EP0947587A1 (de) | 1998-03-09 | 1998-03-09 | Blaslanze und Verfahren zu deren Kühlung |
Country Status (14)
Country | Link |
---|---|
US (1) | US6562287B1 (de) |
EP (2) | EP0947587A1 (de) |
JP (1) | JP4430230B2 (de) |
KR (1) | KR100633188B1 (de) |
CN (1) | CN1264995C (de) |
AT (1) | ATE210195T1 (de) |
AU (1) | AU2726899A (de) |
BR (1) | BR9908644A (de) |
CA (1) | CA2321651C (de) |
DE (1) | DE59900496D1 (de) |
ES (1) | ES2169599T3 (de) |
PT (1) | PT1062370E (de) |
RU (1) | RU2221054C2 (de) |
WO (1) | WO1999046412A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006034007A1 (de) * | 2006-07-22 | 2008-02-07 | Messer Group Gmbh | Verfahren und Vorrichtung zum Eintragen eines Mediums in einen thermischen Behandlungsraum |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20012278A1 (it) * | 2001-10-30 | 2003-04-30 | Techint Spa | Dispositivo e metodo per misurazione discreta e continua della temperatura di metallo liquido in un forno o recipiente per la sua produzione |
DE10253463A1 (de) * | 2002-11-16 | 2004-06-03 | Gecon Engineering Gmbh | Verfahren und Vorrichtung zur Kühlung von Blaslanzen |
WO2006105578A1 (en) * | 2004-10-18 | 2006-10-12 | Technological Resources Pty Limited | Apparatus for injecting solid particulate material into a vessel |
WO2014189506A1 (en) * | 2013-05-22 | 2014-11-27 | Johns Manville | Submerged combustion burners and melters, and methods of use |
CN109210936B (zh) * | 2018-10-18 | 2019-09-20 | 江苏新春兴再生资源有限责任公司 | 一种熔炼炉用的侧吹喷枪及使用方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3744780A (en) * | 1972-01-07 | 1973-07-10 | Applied Techn Corp | Method of treating molten material by use of a lance |
DE2620509C2 (de) * | 1976-05-08 | 1978-04-20 | Didier-Werke Ag, 6200 Wiesbaden | Feuerfester Bauteil oder Formkörper |
WO1980001000A1 (en) * | 1978-11-07 | 1980-05-15 | K Sharp | Cooling of surfaces adjacent molten metal |
FI64398C (fi) * | 1980-08-04 | 1983-11-10 | Outokumpu Oy | Gasblaosroer foer inmatning av reaktionsaemnen i metallurgiskasmaeltor |
AT389710B (de) | 1988-04-25 | 1990-01-25 | Voest Alpine Ind Anlagen | Blaslanze |
GB9023716D0 (en) * | 1990-10-31 | 1990-12-12 | Whellock John G | Metallurgical apparatus and methods |
-
1998
- 1998-03-09 EP EP98104153A patent/EP0947587A1/de not_active Withdrawn
-
1999
- 1999-02-26 JP JP2000535778A patent/JP4430230B2/ja not_active Expired - Fee Related
- 1999-02-26 AT AT99907572T patent/ATE210195T1/de not_active IP Right Cessation
- 1999-02-26 AU AU27268/99A patent/AU2726899A/en not_active Abandoned
- 1999-02-26 WO PCT/EP1999/001255 patent/WO1999046412A1/de not_active Application Discontinuation
- 1999-02-26 ES ES99907572T patent/ES2169599T3/es not_active Expired - Lifetime
- 1999-02-26 PT PT99907572T patent/PT1062370E/pt unknown
- 1999-02-26 US US09/623,005 patent/US6562287B1/en not_active Expired - Lifetime
- 1999-02-26 CN CNB998038229A patent/CN1264995C/zh not_active Expired - Fee Related
- 1999-02-26 KR KR1020007009862A patent/KR100633188B1/ko not_active IP Right Cessation
- 1999-02-26 BR BR9908644-1A patent/BR9908644A/pt not_active IP Right Cessation
- 1999-02-26 EP EP99907572A patent/EP1062370B1/de not_active Expired - Lifetime
- 1999-02-26 RU RU2000123357/02A patent/RU2221054C2/ru not_active IP Right Cessation
- 1999-02-26 DE DE59900496T patent/DE59900496D1/de not_active Expired - Lifetime
- 1999-02-26 CA CA002321651A patent/CA2321651C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006034007A1 (de) * | 2006-07-22 | 2008-02-07 | Messer Group Gmbh | Verfahren und Vorrichtung zum Eintragen eines Mediums in einen thermischen Behandlungsraum |
Also Published As
Publication number | Publication date |
---|---|
CN1264995C (zh) | 2006-07-19 |
CA2321651C (en) | 2007-05-08 |
EP0947587A1 (de) | 1999-10-06 |
DE59900496D1 (de) | 2002-01-17 |
BR9908644A (pt) | 2000-11-14 |
EP1062370A1 (de) | 2000-12-27 |
JP4430230B2 (ja) | 2010-03-10 |
ES2169599T3 (es) | 2002-07-01 |
KR20010041658A (ko) | 2001-05-25 |
RU2221054C2 (ru) | 2004-01-10 |
WO1999046412A1 (de) | 1999-09-16 |
JP2002506124A (ja) | 2002-02-26 |
AU2726899A (en) | 1999-09-27 |
KR100633188B1 (ko) | 2006-10-11 |
ATE210195T1 (de) | 2001-12-15 |
CA2321651A1 (en) | 1999-09-16 |
CN1292831A (zh) | 2001-04-25 |
US6562287B1 (en) | 2003-05-13 |
PT1062370E (pt) | 2002-05-31 |
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