DE1207524B - Electric arc furnace with a stirring coil - Google Patents
Electric arc furnace with a stirring coilInfo
- Publication number
- DE1207524B DE1207524B DEB77783A DEB0077783A DE1207524B DE 1207524 B DE1207524 B DE 1207524B DE B77783 A DEB77783 A DE B77783A DE B0077783 A DEB0077783 A DE B0077783A DE 1207524 B DE1207524 B DE 1207524B
- Authority
- DE
- Germany
- Prior art keywords
- furnace
- electric arc
- stirring coil
- arc furnace
- movable
- 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.)
- Pending
Links
Classifications
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/34—Arrangements for circulation of melts
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/02—Stirring of melted material in melting furnaces
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. α.:Int. α .:
H05bH05b
Deutsche KI.: 21 h -16/30 German AI .: 9 p.m.-4 p.m.
Nummer: 1207 524Number: 1207 524
Aktenzeichen: B 77783 VIII d/21 hFile number: B 77783 VIII d / 21 h
Anmeldetag: 22. Juli 1964Filing date: July 22, 1964
Auslegetag: 23. Dezember 1965Opening day: December 23, 1965
Um die Schmelze in einem Elektro-Lichtbogenofen zu bewegen und dadurch bessere metallurgische Ergebnisse, kürzere Chargenzeiten und andere Vorteile zu erzielen, verwendet man induktive Umrührer, sogenannte Rührspulen, die unmittelbar unter dem Boden des Ofengefäßes befestigt sind. Bei nicht drehbaren Ofengefäßen sind diese Rührspulen direkt am Gefäß angebracht, während sie bei drehbaren Ofengefäßen in die Kippwiegen-Konstruktion eingebaut sind. Im Falle eines Ofendurchbruchs, der sich, wie praktische Erfahrungen gezeigt haben, nie mit Sicherheit ausschließen läßt, wird die unter dem Ofenboden liegende Rührspule in Mitleidenschaft gezogen und unter ungünstigen Umständen durch das flüssige Metall zerstört.To move the melt in an electric arc furnace and thereby achieve better metallurgical results, To achieve shorter batch times and other advantages, inductive agitators, so-called Stirring coils, which are attached directly under the bottom of the furnace vessel. If not rotatable furnace vessels, these stirring coils are attached directly to the vessel, while they are attached to rotatable furnace vessels Furnace vessels are built into the tilting cradle construction. In the event of a furnace breakthrough, As practical experience has shown, it can never be ruled out with certainty that the one under the Stirring coil lying on the furnace floor damaged and under unfavorable circumstances destroys the liquid metal.
Es ist zwar bekannt, die Rührspulen beweglich zu machen, derart, daß die Spulen oder die Polschuhe mechanisch im Kreis geführt werden, damit die magnetischen Druckwellen wandern und die Rührwirkung entsprechend verlagert wird. Hierbei verlassen aber die Rührspulen nicht den Raum unter dem Herd.It is known to make the stirring coils movable in such a way that the coils or the pole pieces be mechanically circulated so that the magnetic pressure waves migrate and the stirring effect is shifted accordingly. Here, however, the stirring coils do not leave the space below the stove.
Die Erfindung bezweckt, im Falle eines Ofendurchbruchs die Gefährdung der Spule ganz oder mindestens zu einem wesentlichen Teil zu beseitigen. Dieser Zweck wird nach der Erfindung dadurch erreicht, daß die Rührspule so beweglich, z. B. verfahrbar oder verschwenkbar, ausgebildet ist, daß sie im Bedarfsfall rasch aus dem Raum unter dem Herd entfernt werden kann.The aim of the invention is to completely or completely endanger the coil in the event of a furnace breakthrough to eliminate at least a substantial part. This purpose is achieved according to the invention by that the stirring coil is so movable, e.g. B. movable or pivotable, is designed that they in If necessary, it can be quickly removed from the space under the stove.
In der Zeichnung ist ein Ausführungsbeispiel des Elektro-Lichtbogenofens nach der Erfindung dargestellt, und zwar zeigtIn the drawing, an embodiment of the electric arc furnace according to the invention is shown, namely shows
F i g. 1 einen Vertikalschnitt in der Kipprichtung undF i g. 1 shows a vertical section in the tilting direction and
F i g. 2 einen Vertikalschnitt senkrecht zur Kipprichtung. F i g. 2 shows a vertical section perpendicular to the tilting direction.
Das Ofengefäß 1 ruht mit dem Drehkranz 2 und nicht dargestellten Drehrollen auf der Kippwiege 3, die ihrerseits auf der Wälzbahn 4 liegt. Die Rührspule 5 ist über Träger 7 mit dem Fahrwerk 8 verbunden, das zwischen Schienen 9 verfahrbar ist. Mit Hilfe der nicht dargestellten Antriebsvorrichtung wird das Fahrwerk 8 mit der Rührspule 5 im Falle eines drohenden Ofendurchbruchs quer zur Kippvorrichtung des Ofens verfahren und die Rührspule 5 aus dem unmittelbaren Ofenbereich entfernt. Um eine rechtzeitige Entfernung der Rührspule 5 zu sichern, kann man an sich bekannte Temperaturfühler, z. B. Thermoelemente, einbauen, wie bei 10 angedeutet ist. Bei Erreichen einer bestimmten kritischen Temperatur an einer Stelle des Ofenbodens Mit Rührspule versehener Elektro-Lichtbogenofen The furnace vessel 1 rests with the turntable 2 and rotating rollers (not shown) on the tilting cradle 3, which in turn lies on the rolling track 4. The stirring coil 5 is connected to the chassis 8 via a carrier 7, which can be moved between rails 9. With the aid of the drive device, not shown, the chassis 8 with the stirring coil 5 is moved transversely to the tilting device of the furnace in the event of an impending furnace breakthrough, and the stirring coil 5 is removed from the immediate furnace area. In order to ensure timely removal of the stirring coil 5, one can use known temperature sensors such. B. Thermocouples, as indicated at 10 is indicated. When a certain critical temperature is reached at one point on the furnace floor. Electric arc furnace equipped with a stirring coil
Anmelder:Applicant:
Beteiligungs- und Patentverwaltungsgesellschaft mit beschränkter Haftung,Investment and patent management company with limited liability,
Essen, Altendorfer Str. 103Essen, Altendorfer Str. 103
Als Erfinder benannt:Named as inventor:
Gustav-Adolf Sixel, Düsseldorf-Kaiserswerth - -Gustav-Adolf Sixel, Düsseldorf-Kaiserswerth - -
können die Temperaturfühler selbsttätig die Entfernung der Rührspule aus dem Raum unter dem Herd einleiten.the temperature sensors can automatically remove the stirring coil from the space under the Initiate stove.
Besonders vorteilhaft ist die Erfindung anwendbar auf Lichtbogen-Schmelzöfen mit kippbarem und/oder drehbarem und/oder verfahrbarem Ofengefäß, bei denen die für das Kippen und/oder Drehen und/oder Verfahren erforderlichen Einrichtungen oberhalb des flüssigen Ofeninhalts angeordnet sind. Derartige öfen können so ausgebildet sein, daß das Ofengefäß auf seinem äußeren Umfang oberhalb des flüssigen Ofeninhalts mit einem Drehring versehen ist, der auf Tragrollen gelagert ist, die an einem mit Kippzapfen versehenen Tragring aufgehängt sind. Die Tragrollen können auf Hebeln angeordnet werden, die schwenkbar am Tragring befestigt sind, um das Ofengefäß nach unten senken und auswechseln zu können.The invention is particularly advantageously applicable to arc melting furnaces with tiltable and / or rotatable and / or movable furnace vessel, in which the tilting and / or rotating and / or Process required facilities are arranged above the liquid furnace content. Such Furnaces can be designed so that the furnace vessel on its outer periphery above the liquid Furnace contents is provided with a rotating ring, which is mounted on support rollers, which are attached to a pivot pin provided support ring are suspended. The idlers can be placed on levers that pivot are attached to the support ring so that the furnace vessel can be lowered and replaced.
Claims (4)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB77783A DE1207524B (en) | 1964-07-22 | 1964-07-22 | Electric arc furnace with a stirring coil |
| US465293A US3406240A (en) | 1964-07-22 | 1965-06-21 | Electric-arc furnace equipped with puddling coil |
| AT656365A AT268709B (en) | 1964-07-22 | 1965-07-16 | Electric arc furnace equipped with a stirring coil |
| LU49104A LU49104A1 (en) | 1964-07-22 | 1965-07-16 | |
| SE9621/65A SE311202B (en) | 1964-07-22 | 1965-07-21 | |
| FR25454A FR1453935A (en) | 1964-07-22 | 1965-07-21 | Electric arc furnace equipped with a stirring coil |
| GB31038/65A GB1101176A (en) | 1964-07-22 | 1965-07-21 | Electric arc furnace provided with a removable agitator coil |
| BE667204D BE667204A (en) | 1964-07-22 | 1965-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB77783A DE1207524B (en) | 1964-07-22 | 1964-07-22 | Electric arc furnace with a stirring coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1207524B true DE1207524B (en) | 1965-12-23 |
Family
ID=6979605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB77783A Pending DE1207524B (en) | 1964-07-22 | 1964-07-22 | Electric arc furnace with a stirring coil |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3406240A (en) |
| AT (1) | AT268709B (en) |
| BE (1) | BE667204A (en) |
| DE (1) | DE1207524B (en) |
| FR (1) | FR1453935A (en) |
| GB (1) | GB1101176A (en) |
| LU (1) | LU49104A1 (en) |
| SE (1) | SE311202B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4753192A (en) * | 1987-01-08 | 1988-06-28 | Btu Engineering Corporation | Movable core fast cool-down furnace |
| CN110312908A (en) | 2017-02-10 | 2019-10-08 | Abb瑞士股份有限公司 | Furnace module for metal manufacturing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1752887A (en) * | 1928-04-13 | 1930-04-01 | Gen Electric | Induction furnace |
| GB341967A (en) * | 1928-11-03 | 1931-01-26 | Emilien Bornand | Improvements in induced current furnaces |
| DE897304C (en) * | 1951-07-06 | 1953-11-19 | Demag Elektrometallurgie Gmbh | Electromagnetic stirring process and electric furnace with stirring device for the process |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573319A (en) * | 1948-11-08 | 1951-10-30 | Asea Ab | Inductive stirring |
| US2665319A (en) * | 1949-05-24 | 1954-01-05 | Asea Ab | Metallurgical furnace having a stirring winding |
| US2774803A (en) * | 1952-09-20 | 1956-12-18 | Asea Ab | Inductive stirring device for metallurgical furnace |
| US2958719A (en) * | 1958-09-18 | 1960-11-01 | Nat Res Corp | Production of metal |
| US3012083A (en) * | 1959-02-26 | 1961-12-05 | Asea Ab | Electric stirring windings |
-
1964
- 1964-07-22 DE DEB77783A patent/DE1207524B/en active Pending
-
1965
- 1965-06-21 US US465293A patent/US3406240A/en not_active Expired - Lifetime
- 1965-07-16 LU LU49104A patent/LU49104A1/xx unknown
- 1965-07-16 AT AT656365A patent/AT268709B/en active
- 1965-07-21 FR FR25454A patent/FR1453935A/en not_active Expired
- 1965-07-21 GB GB31038/65A patent/GB1101176A/en not_active Expired
- 1965-07-21 SE SE9621/65A patent/SE311202B/xx unknown
- 1965-07-22 BE BE667204D patent/BE667204A/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1752887A (en) * | 1928-04-13 | 1930-04-01 | Gen Electric | Induction furnace |
| GB341967A (en) * | 1928-11-03 | 1931-01-26 | Emilien Bornand | Improvements in induced current furnaces |
| DE897304C (en) * | 1951-07-06 | 1953-11-19 | Demag Elektrometallurgie Gmbh | Electromagnetic stirring process and electric furnace with stirring device for the process |
Also Published As
| Publication number | Publication date |
|---|---|
| US3406240A (en) | 1968-10-15 |
| BE667204A (en) | 1965-11-16 |
| GB1101176A (en) | 1968-01-31 |
| FR1453935A (en) | 1966-07-22 |
| AT268709B (en) | 1969-02-25 |
| LU49104A1 (en) | 1965-09-16 |
| SE311202B (en) | 1969-06-02 |
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