EP1066737B1 - Bottom for a metallurgical vessel with a direct current electric arc device - Google Patents
Bottom for a metallurgical vessel with a direct current electric arc device Download PDFInfo
- Publication number
- EP1066737B1 EP1066737B1 EP99916773A EP99916773A EP1066737B1 EP 1066737 B1 EP1066737 B1 EP 1066737B1 EP 99916773 A EP99916773 A EP 99916773A EP 99916773 A EP99916773 A EP 99916773A EP 1066737 B1 EP1066737 B1 EP 1066737B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vessel
- anode
- sleeve
- metallurgical vessel
- metallurgical
- 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
- 238000010891 electric arc Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000012809 cooling fluid Substances 0.000 claims abstract description 3
- 150000002739 metals Chemical class 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000003251 chemically resistant material Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- -1 lead Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/06—Electrodes
-
- 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
-
- 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
- F27B3/19—Arrangements of devices for discharging
-
- 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
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
Definitions
- the invention relates to a metallurgical vessel with a bottom and with a DC arc device, the cathode of which protrudes into and into the vessel Refractory lining of the bottom is arranged at least one anode, which ends the Penetrates the vessel wall and touches the metallic melt in the vessel and the at the other end connectable to cooling fluid supply sources and via holding elements is electrically insulated attached to the vessel wall.
- DE 40 26 897 A1 discloses a metallurgical vessel with a vessel bottom that has a refractory lining in which the bottom electrode has a DC arc furnace is arranged.
- the jacket of the vessel is insulated separately a holding device releasably attached.
- the had device consists of one Flange tube arranged coaxially to the center of the electrode, on the metallurgical vessel is screwable.
- the electrode penetrating the furnace wall contacts the melt in the vessel.
- the head area of the electrode is melted during operation. Since it is here is the lowest point of the furnace vessel in which the melt is located, The thinner and heavier melt components also accumulate here. Defects in the refractory material can lead to connections of the liquid thread come between the electrode and the metal jacket of the vessel. The consequence of this are Damage or destruction of the furnace vessel in the area of the bottom electrode electrical flashovers.
- the invention has set itself the goal of a metallurgical vessel with a bottom and to create with a DC arc device in which with simple constructive An occurrence of electrical flashovers in the bottom of the vessel is prevented.
- a sleeve is provided, which in the part of the anode protruding into the vessel is enveloped by it to an extent it is removed that low-melting metals flow out of the vessel without hindrance can.
- the sleeve is made of a material that does not conduct electricity built up, preferably made of ceramic.
- the head of the sleeve facing the interior of the vessel is designed as a collecting screen, and has a conically divergent shape.
- the sleeve consists of at least two parts, the first part being cylindrical and the second part from a separation point towards the inside of the vessel is conical has an opening funnel shape.
- a sleeve is in the refractory lining 41 from a refractory ramming mass 42 provided in the extension of the funnel-shaped second part 35 of the sleeve 31 extends.
- the ramming mass 42 constructed sleeve fulfills the function of a drainage and ensures that also at a greater wear of the anode 21, the entire thin metal to the sleeve 31st is directed.
- the distance ⁇ r of the drain channel between the anode or the tubular Holding element of the anode and the sleeve is 0.5 to 2 mm. That distance is sufficient to prevent the usual melt from flowing out of the bottom of the vessel.
- a collecting device is arranged below the bottom.
- the anode is replaced by a an insulation separate clamping ring held below the furnace floor is arranged.
- the insulation is a simple ring from the furnace floor held and at a distance from the anode forming a drainage channel spaced.
- FIG. 1 An example of the invention is shown in FIG. 1.
- an opening 13 is provided through which an anode 21 is guided.
- the anode 21 penetrates the refractory lining 41 so far that with the in the vessel 11th fillable melt has contact.
- the anode 21 is held by a holding element 24, which has a clamping ring 29 through which the anode 21 via an insulating Distance 61 is separated and hereby held.
- the anode 21 has a step 23 which is connected to a Holding element 24 corresponds, which is tubular and a flange 27 has, which is fastened to the vessel bottom 12 by means of retaining screws 28.
- the flange 27 is electrical by insulating spacing 61 and screw insulation 62 non-conductively connected to the metallic part of the metallurgical vessel 11.
- the anode 21 is water-cooled and has a cooling medium supply 51 and one Coolant discharge 52 on. It is also electrically connected to a power connection 22 connected.
- This sleeve 31 is constructed from the material which is nonconductive of electrical current and has an inner radius R H which has a distance ⁇ r of 0.5 to 2 mm from the radius R A bearing the distance from the outer radius of the anode or the holding element 24 holding the anode , Thin metal can flow out of the metallurgical vessel via this annular drain channel 37.
- the sleeve 31 is constructed in one piece and from the bottom 12 held positively.
- the sleeve 31 is constructed in two pieces and has one first part 34 with a cylindrical shape and a second part 35, which acts as a funnel is trained.
- the extension of the head of the funnel-shaped part 35 is made of a refractory Pounding mass 42 formed as a sleeve-shaped drainage in the refractory Lining 41 of the bottom 12 is formed in the metallurgical vessel 11.
Abstract
Description
Die Erfindung betrifft ein metallurgischen Gefäßes mit einem Boden und mit einer Gleichstromlichtbogeneinrichtung, deren Kathode in das Gefäß hineinragt und in dessen Feuerfestauskleidung des Bodens mindestens eine Anode angeordnet ist, die einenends die Gefäßwand durchdringt und die im Gefäß befindliche metallische Schmelze berührt und die anderenends an kühlfluide Versorgungsquellen anschließbar sowie über Halteelemente elektrisch isoliert an der Gefäßwand befestigt ist.The invention relates to a metallurgical vessel with a bottom and with a DC arc device, the cathode of which protrudes into and into the vessel Refractory lining of the bottom is arranged at least one anode, which ends the Penetrates the vessel wall and touches the metallic melt in the vessel and the at the other end connectable to cooling fluid supply sources and via holding elements is electrically insulated attached to the vessel wall.
Aus DE 40 26 897 A1 ist ein metallurgisches Gefäß bekannt, mit einem Gefäßboden, der eine Feuerfestauskleidung besitzt, in dem die Bodenelektrode eines Gleichstromlichtbogenofens angeordnet ist. Am Mantel des Gefäßes ist durch eine Isolierung getrennt eine Halteeinrichtung lösbar befestigt. Die Hatteeinrichtung besteht dabei aus einem koaxial zur Elektrodenmitte angeordneten Flanschrohr, das am metallurgischen Gefäß anschraubbar ist.DE 40 26 897 A1 discloses a metallurgical vessel with a vessel bottom that has a refractory lining in which the bottom electrode has a DC arc furnace is arranged. The jacket of the vessel is insulated separately a holding device releasably attached. The had device consists of one Flange tube arranged coaxially to the center of the electrode, on the metallurgical vessel is screwable.
Die die Ofenwand durchdringende Elektrode kontaktiert die im Gefäß befindliche Schmelze. Während des Betriebes wird der Kopfbereich der Elektrode aufgeschmolzen. Da es sich hier um den tiefsten Punkt des Ofengefäßes handelt, in dem sich die Schmelze befindet, sammeln sich hier auch die dünnflüssigeren und schwereren Schmelzenbestandteile an. Durch Defekte im Feuerfestmaterial kann es zu Verbindungen des Flüssigkeitfadens zwischen der Elektrode und dem Metaltmantel des Gefäßes kommen. Die Folge hiervon sind Beschädigungen oder Zerstörungen des Ofengefäßes im Bereich der Bodenelektrode durch elektrische Überschläge. The electrode penetrating the furnace wall contacts the melt in the vessel. The head area of the electrode is melted during operation. Since it is here is the lowest point of the furnace vessel in which the melt is located, The thinner and heavier melt components also accumulate here. Defects in the refractory material can lead to connections of the liquid thread come between the electrode and the metal jacket of the vessel. The consequence of this are Damage or destruction of the furnace vessel in the area of the bottom electrode electrical flashovers.
Die Erfindung hat sich das Ziel gesetzt, ein metallurgischen Gefäßes mit einem Boden und mit einer Gleichstromlichtbogeneinrichtung zu schaffen, bei dem mit einfachen konstruktiven Mitteln ein Auftreten von elektrischen Überschlägen im Gefäßboden verhindert wird.The invention has set itself the goal of a metallurgical vessel with a bottom and to create with a DC arc device in which with simple constructive An occurrence of electrical flashovers in the bottom of the vessel is prevented.
Die Erfindung erreicht dieses Ziel durch die kennzeichnenden Merkmale des Anspruchs 1. Die nachfolgenden Ansprüche sind vorteilhafte Weiterbildungen der Erfindung.The invention achieves this aim by the characterizing features of claim 1. The following claims are advantageous developments of the invention.
Erfindungsgemäß ist der Durchtritt der Anode durch den metallischen Boden des Ofengefäßes als Abflußkanal ausgestaltet. Hierzu wird eine Hülse vorgesehen, die den in das Gefäß hineinragende Teil der Anode umhüllt und dabei in einem Maße von dieser entfernt ist, daß niedrigschmelzende Metalle ohne Behinderung aus dem Gefäß abfließen können. Die Hülse ist dabei aus einem den elektrischen Strom nicht leitenden Werkstoff aufgebaut, vorzugsweise aus Keramik.According to the passage of the anode through the metallic bottom of the Furnace vessel designed as a drain channel. For this purpose, a sleeve is provided, which in the part of the anode protruding into the vessel is enveloped by it to an extent it is removed that low-melting metals flow out of the vessel without hindrance can. The sleeve is made of a material that does not conduct electricity built up, preferably made of ceramic.
Der dem Gefäßinneren zugewandte Kopf der Hülse ist als Auffangschirm ausgebildet, und weist dabei eine konisch divergierende Form auf. In einer vorteilhaften Ausgestaltung besteht die Hülse aus mindestens zwei Teilen, wobei der erste Teil zylindrisch ausgeformt ist und der zweite Teil von einer Trennstelle ab in Richtung Gefäßinneres eine konisch sich öffnende Trichterform besitzt.The head of the sleeve facing the interior of the vessel is designed as a collecting screen, and has a conically divergent shape. In an advantageous embodiment the sleeve consists of at least two parts, the first part being cylindrical and the second part from a separation point towards the inside of the vessel is conical has an opening funnel shape.
In einer weiteren vorteilhaften Ausgestaltung ist in der feuerfesten Auskleidung 41 eine Hülse
aus einer feuerfesten Stampfmasse 42 vorgesehen, die in der Verlängerung des
trichterförmigen zweiten Teils 35 der Hülse 31 sich erstreckt. Die aus Stampfmasse 42
aufgebaute Hülse erfüllt dabei die Funktion einer Dränage und sorgt dafür, daß auch bei
einem größeren Verschleiß der Anode 21 das gesamte dünnflüssige Metall zur Hülse 31
geleitet wird.In a further advantageous embodiment, a sleeve is in the
Der Abstand Δr des Abflußkanals zwischen der Anode bzw. des rohrförmigen Halteelementes der Anode und der Hülse beträgt 0,5 bis 2 mm. Diese Distanz ist ausreichend, um das Abfließen der üblichen Schmelze aus dem Gefäßboden zu verhindern. The distance Δr of the drain channel between the anode or the tubular Holding element of the anode and the sleeve is 0.5 to 2 mm. That distance is sufficient to prevent the usual melt from flowing out of the bottom of the vessel.
Zum Auffangen des über den Abflußkanal abfließenden dünnflüssigen Metalles, wie Blei, ist eine Auffangvorrichtung unterhalb des Bodens angeordnet.To collect the thin metal flowing out via the drain channel, such as Lead, a collecting device is arranged below the bottom.
In einer konstruktiv besonders einfachen Bauweise wird die Anode durch einen über eine Isolierung getrennten Klemmring gehalten, der unterhalb des Ofenbodens angeordnet ist. Die Isolierung ist als einfacher Ring formschlüssig vom Ofenboden gehalten und dabei in einer einen Abflußkanal bildenden Distanz zur Anode beabstandet.In a structurally particularly simple construction, the anode is replaced by a an insulation separate clamping ring held below the furnace floor is arranged. The insulation is a simple ring from the furnace floor held and at a distance from the anode forming a drainage channel spaced.
Ein Beispiel der Erfindung ist in der Figur 1 dargelegt.An example of the invention is shown in FIG. 1.
Im metallischen Boden 12 des nicht weiter dargestellten metallurgischen Gefäßes 11
ist eine Öffnung 13 vorgesehen, durch die eine Anode 21 geführt ist. Die Anode 21
durchdringt dabei die Feuerfestauskleidung 41 soweit, daß die mit der in das Gefäß 11
einfüllbaren Schmelze Kontakt hat.In the
Im linken Teil der Zeichnung wird die Anode 21 von einem Halteelement 24 gehalten,
welches einen Klemmring 29 besitzt, durch den die Anode 21 über eine isolierende
Distanzierung 61 getrennt und hiermit gehalten wird.In the left part of the drawing, the
Im rechten Teil der Figur 1 weist die Anode 21 eine Stufe 23 auf, die mit einem
Halteelement 24 korrespondiert, welches rohrförmig ausgestaltet ist und einen Flansch
27 besitzt, der über Halteschrauben 28 am Gefäßboden 12 befestigt ist. Der Flansch
27 ist durch isolierende Distanzierung 61 und eine Schraubenisolierung 62 elektrisch
nicht leitend mit dem metallischen Teil des metallurgischen Gefäßes 11 verbunden.In the right part of FIG. 1, the
Die Anode 21 ist wassergekühlt und weist eine Kühlmedienzufuhr 51 und eine
Kühlmedienabfuhr 52 auf. Weiterhin ist sie elektrisch an einen Stromanschluß 22
angeschlossenen.The
Beim Durchtritt 13 durch den Boden 12 des metallurgischen Gefäßes 11 ist die Anode
21 von einer Hülse 31 umgeben. Diese Hülse 31 ist aus den elektrischen Strom nicht
leitendem Werkstoff aufgebaut und weist einen Innenradius RH auf, der zum Abstand
des Außenradius der Anode bzw. des die Anode haltenden Halteelementes 24
tragenden Radius RA einen Abstand Δr von 0,5 bis 2 mm auf. Über diesen
ringförmigen Abflußkanal 37 kann dünnflüssiges Metall aus dem metallurgischen
Gefäß herausfließen.When it passes through the
Im linken Teil der Figur 1 ist die Hülse 31 einstückig aufgebaut und vom Boden 12
formschlüssig gehalten.In the left part of FIG. 1, the
Im rechten Teil der Figur 1 ist die Hülse 31 zweistückig aufgebaut und besitzt einen
ersten Teil 34 mit zylindrischer Form und einen zweiten Teil 35, der als Trichter
ausgebildet ist.In the right part of Figure 1, the
Die Verlängerung des Kopfes des trichterförmigen Teils 35 wird von einer feuerfesten
Stampfmasse 42 gebildet, die als hülsenförmige Dränage in der feuerfesten
Auskleidung 41 des Bodens 12 im metallurgischen Gefäß 11 gebildet wird. The extension of the head of the funnel-shaped part 35 is made of a
- 1111
- Gefäßvessel
- 1212
- Metallischer BodenMetallic floor
- 1313
- Öffnungopening
- 2121
- Anodeanode
- 2222
- Stromanschlußpower supply
- 2323
- Stufestep
- 2424
- Halteelementretaining element
- 2525
- Öffnungenopenings
- 2626
- Auffangvorrichtungcatcher
- 2727
- Flanschflange
- 2828
- Halteschraubenretaining screws
- 2929
- Klemmringclamping ring
- 3131
- Hülseshell
- 3232
- Kopf der HülseHead of the sleeve
- 3333
- AuffangschirmSNF
- 3434
- Erster Teil, zylindrischFirst part, cylindrical
- 3535
- Zweiter Teil, trichterförmigSecond part, funnel-shaped
- 3636
- Trennstelleseparation point
- 3737
- Abflußkanalspillway
- 4141
- ff Auskleidungff lining
- 4242
- ff Stampfmasseff ramming mass
- 5151
- KühlmedienzufuhrCooling media supply
- 5252
- KühlmedienabfuhrCoolant discharge
- 6161
- Distanzierungdistancing
- 6262
- Schraubenisolierungscrew insulation
- Δr.delta..sub.R
- Abstanddistance
- RH R H
- Innenradius HülseInner radius sleeve
- RA R A
- Außenradius HalteelementOuter radius holding element
Claims (9)
- Metallurgical vessel having a bottom and a dc arc device, whose cathode projects into the vessel and in the fireproof lining of the bottom of which at least one anode is disposed, which at one end penetrates the vessel wall and touches metal melt contained in the vessel and which at the other end is fixed to the vessel wall so as to be connectable to cooling-fluid supply sources and so as to be electrically insulated via holding elements, characterised in that a sleeve (31) not conducting the electric current is provided, which encases the part of the anode (21) projecting into the metallurgical vessel (11) thus forming a discharge channel (37), which is disposed remote from the anode (21) by a distance (Δr) such that metals with a low melting point can flow out of the vessel (11) without hindrance.
- Metallurgical vessel according to claim 1, characterised in that a head (32) of the sleeve (31) associated with the vessel interior conically diverges so as to form a tundish (33).
- Metallurgical vessel according to claim 1 or 2, characterised in that the sleeve (31) consists of chemically resistant material capable of withstanding high temperatures.
- Metallurgical vessel according to one of the preceding claims, characterised in that the sleeve (31) consists of at least two parts (34,35), the first part (34) being cylindrically formed and the second part (35) having a funnel shape which opens up conically from the joining point (36).
- Metallurgical vessel according to one of the preceding claims, characterised in that above the mouth of the funnel-shaped part (35) of the sleeve (31) the fireproof lining (41) of the bottom (12) of the vessel (11) is a monolithic lining material (42).
- Metallurgical vessel according to claim 1, characterised in that the anode (21) bears via a step (23) on a tubular holding element (24), which is fixed via a flange (27) and holding screws (28) to the bottom of the vessel (12), and in that the distance (Δr) of the discharge channel (37) between the anode and the tubular holding element (24) is
RH = the sleeve inner radius and
RA = the outer radius of the anode or of the holding element holding the anode. - Metallurgical vessel according to claim 6, characterised in that the mouth of the discharge channel (37) communicates with apertures (25) in the flange (27) of the holding element (24) for the anode (21), via which the molten metal having a low melting point is passed out of the metallurgical vessel (11) and is collected in a tundish (26).
- Metallurgical vessel according to claim 1, characterised in that the anode (21) is held by a clamping ring (29) firmly connected to the bottom (12) of the vessel (11) via an insulating spacer (61).
- Metallurgical vessel according to claim 3, characterised in that the sleeve consists of ceramic material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19815154A DE19815154C1 (en) | 1998-03-27 | 1998-03-27 | Bottom of a metallurgical vessel with a direct current electric arc unit |
| DE19815154 | 1998-03-27 | ||
| PCT/DE1999/000631 WO1999051065A2 (en) | 1998-03-27 | 1999-03-03 | Bottom for a metallurgical vessel with a direct current electric arc device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1066737A2 EP1066737A2 (en) | 2001-01-10 |
| EP1066737B1 true EP1066737B1 (en) | 2002-09-18 |
Family
ID=7863606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99916773A Expired - Lifetime EP1066737B1 (en) | 1998-03-27 | 1999-03-03 | Bottom for a metallurgical vessel with a direct current electric arc device |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6485675B1 (en) |
| EP (1) | EP1066737B1 (en) |
| JP (1) | JP2002510786A (en) |
| KR (1) | KR20010034658A (en) |
| CN (1) | CN1295779A (en) |
| AT (1) | ATE224632T1 (en) |
| AU (1) | AU3515599A (en) |
| BR (1) | BR9909144A (en) |
| CA (1) | CA2326181A1 (en) |
| DE (2) | DE19815154C1 (en) |
| ES (1) | ES2184436T3 (en) |
| SK (1) | SK14202000A3 (en) |
| TR (1) | TR200002763T2 (en) |
| WO (1) | WO1999051065A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7644003B2 (en) | 2001-05-04 | 2010-01-05 | Agere Systems Inc. | Cue-based audio coding/decoding |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2577311B1 (en) * | 1985-02-11 | 1987-03-06 | Siderurgie Fse Inst Rech | ELECTRICAL CONNECTION DEVICE FOR PLACING ON THE WALL OF A DIRECT CURRENT METALLURGICAL OVEN. |
| FR2622078B1 (en) * | 1987-10-20 | 1990-03-09 | Siderurgie Fse Inst Rech | WALL ELECTRODE FOR ELECTRIC METALLURGICAL OVEN |
| DE4026897C2 (en) * | 1990-08-23 | 1994-05-05 | Mannesmann Ag | Metallic base electrode for metallurgical vessels |
| FR2682003B1 (en) * | 1991-09-30 | 1997-04-30 | Siderurgie Fse Inst Rech | WALL ELECTRODE FOR DIRECT CURRENT ELECTRIC METALLURGICAL OVEN. |
| DE4138724C2 (en) * | 1991-11-19 | 1997-05-28 | Mannesmann Ag | Method and device for repairing an electrode |
| FR2711233B1 (en) * | 1993-10-15 | 1995-12-29 | Usinor Sacilor | Metallurgical vessel comprising a sole electrode. |
-
1998
- 1998-03-27 DE DE19815154A patent/DE19815154C1/en not_active Expired - Fee Related
-
1999
- 1999-03-03 WO PCT/DE1999/000631 patent/WO1999051065A2/en not_active Application Discontinuation
- 1999-03-03 KR KR1020007010592A patent/KR20010034658A/en not_active Application Discontinuation
- 1999-03-03 EP EP99916773A patent/EP1066737B1/en not_active Expired - Lifetime
- 1999-03-03 US US09/647,208 patent/US6485675B1/en not_active Expired - Fee Related
- 1999-03-03 JP JP2000541853A patent/JP2002510786A/en active Pending
- 1999-03-03 BR BR9909144-5A patent/BR9909144A/en not_active IP Right Cessation
- 1999-03-03 CN CN99804500A patent/CN1295779A/en active Pending
- 1999-03-03 DE DE59902756T patent/DE59902756D1/en not_active Expired - Lifetime
- 1999-03-03 TR TR2000/02763T patent/TR200002763T2/en unknown
- 1999-03-03 AT AT99916773T patent/ATE224632T1/en not_active IP Right Cessation
- 1999-03-03 CA CA002326181A patent/CA2326181A1/en not_active Abandoned
- 1999-03-03 SK SK1420-2000A patent/SK14202000A3/en unknown
- 1999-03-03 ES ES99916773T patent/ES2184436T3/en not_active Expired - Lifetime
- 1999-03-03 AU AU35155/99A patent/AU3515599A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010034658A (en) | 2001-04-25 |
| CN1295779A (en) | 2001-05-16 |
| WO1999051065A2 (en) | 1999-10-07 |
| DE19815154C1 (en) | 1999-08-05 |
| BR9909144A (en) | 2000-12-05 |
| CA2326181A1 (en) | 1999-10-07 |
| DE59902756D1 (en) | 2002-10-24 |
| SK14202000A3 (en) | 2001-06-11 |
| EP1066737A2 (en) | 2001-01-10 |
| ATE224632T1 (en) | 2002-10-15 |
| JP2002510786A (en) | 2002-04-09 |
| WO1999051065A3 (en) | 2000-01-13 |
| TR200002763T2 (en) | 2000-12-21 |
| US6485675B1 (en) | 2002-11-26 |
| ES2184436T3 (en) | 2003-04-01 |
| AU3515599A (en) | 1999-10-18 |
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