EP1213553B1 - Positioning device for combustible/oxygen lances - Google Patents
Positioning device for combustible/oxygen lances Download PDFInfo
- Publication number
- EP1213553B1 EP1213553B1 EP01128686A EP01128686A EP1213553B1 EP 1213553 B1 EP1213553 B1 EP 1213553B1 EP 01128686 A EP01128686 A EP 01128686A EP 01128686 A EP01128686 A EP 01128686A EP 1213553 B1 EP1213553 B1 EP 1213553B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- positioning device
- injection lance
- injection
- lance
- annular gap
- 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
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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
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
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- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
-
- 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
- F27B3/22—Arrangements of air or gas supply devices
- F27B3/225—Oxygen blowing
-
- 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
- F27D3/16—Introducing a fluid jet or current into the charge
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- 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
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/168—Introducing a fluid jet or current into the charge through a lance
- F27D2003/169—Construction of the lance, e.g. lances for injecting particles
Definitions
- the invention relates to a positioning device for fuel / oxygen lances for the entry of inputs and fuels and oxidizing agents, in particular of oxygen or oxygenated mixtures, into a molten zone Production of metals, in particular of cast iron and metal alloys in a furnace shaft of a cupola, according to the characteristics of the generic term of Claim 1.
- a generic same positioning device for an oxygen injection lance is off DE 196 46 802 A 1 known.
- the with a Laval nozzle equipped injection lance for the entry of oxygen in one entering a molten zone inlet channel of a melting furnace in the form a shaft furnace of a cupola, so positioned to be optimal Oxygen is introduced into the coke bed located in the molten zone, wherein a Damage caused by thermal influences of the molten zone Injection lance, for example, a scaling, thereby preventing the Injection lance to the entry nozzle or in the melting zone of the shaft furnace located coke bed with a safety margin of 15 to 20 mm is.
- the invention is therefore based on the object, a positioning device for To provide injection lances, by means of which the injection lance in the can be positioned in the molten zone inlet channel so that an optimal entry of inputs and fuels as well as oxidizing agents in the Melting zone and an automatic method of injection lance from the Melting zone is possible.
- the positioning device has a guide housing with a Schlittenhunt and with a guide installation on, with the with a Spring suspension connected injection lance by the flowing through the gaseous injection medium pressure is arranged axially displaceable.
- the positioned in the inflow into the melting zone inlet channel Injection lance is characterized by when flowing through the gaseous Injection medium in the lance ring gap generated in the flow direction pressure arranged by means of the centrifuge in a carriage chamber to the injection lance Guide installation axially in the direction of the melting zone up to a Safety distance of 15 - 20 mm to the nozzle edge or in the Melting bed coke bed process and during the medium entry in the melting zone kept in operating position.
- the injection lance After completion of the entry of gaseous fuels and from the oxidizing agent into the melting zone, the injection lance is replaced by the one from the spring suspension against the entry direction on the injection lance exerted spring pressure automatically back from the lance function damaging Retracted area of the molten zone in the introduction channel in a rest position.
- the retraction of the injection lance with this and the guide housing connected spring suspension is preferably made of a stainless steel coil spring.
- the guide housing with the in the carriage chamber for the process of Injection lance centric to this arranged guide installation exist preferably also made of stainless steel.
- the annular gap has two consecutive, differently formed inlet sections E and T on.
- the length of the inlet section E more as the fivefold of the diameter of the injection lance and the length of the Inlet distance T is always greater than the diameter of the annular gap.
- the positioning device according to the invention for injection lances for entry of Use and fuels and oxidizing agents, especially of pure Oxygen or oxygenated mixture, in a molten zone of a Melting furnace for the production of metals, in particular of cast iron and Metal alloys in a furnace shaft of a cupola furnace ensures a automatic process of the injection lance in one in the melting zone einmündenden feed channel, whereby an optimal gas entry into the in the Melting coke bed and at Lanzenruhe ein a Damage or destruction excluding positioning in the introduction channel is guaranteed outside the melting zone.
- Fig. 1 shows a schematic sectional view of an inventive Positioning device for an injection lance
- the positioning device shown in Fig. 1 has a guide housing 1, in whose carriage chamber 5 connected to a spring suspension 3 Injection lance 2 with a guide installation 4 is arranged axially movable.
- the injection lance 2 formed with a variable diameter DL has a the gaseous injection medium (fuels and oxidizing agents, in particular pure oxygen or oxygen-containing gas mixture) into the melting zone of the melting furnace conducting annular gap with a variable diameter s.
- the annular gap is in two different in length and diameter variable inlet sections T and E. divided.
- the length of the inlet section E greater than five times the diameter DL the injection lance 2 and the length of the inlet section T is greater than the annular gap diameter s to choose.
- the gaseous medium is introduced into the melting zone of the melting furnace via the annular gap diameter s and its end nozzle (s).
- the injection lance 2 which is now pressurized by the injection medium, is prevented from damaging or destroying the injection lance 2 by thermal influences from the molten zone due to the spring force of the spring suspension 3 acting counter to the entry direction within the carriage chamber 5 of the guide housing 1 of the positioning device Distance L in a rest position 2a withdrawn from the molten zone in the introduction channel.
- the guide housing 1 and the guide installation 4 are preferably made Stainless steel, as well as with the injection lance 2 and the guide housing. 1 connected, preferably designed as a spiral spring suspension 3
- Fig. 2 is that found by experiment, shown graphically below Ratio between injection lance / annulus diameter DL / s in Dependence on the gas flow flowing through the lance annular gap and its flow pressure DV:
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Description
Die Erfindung betrifft eine Positioniereinrichtung für Brennstoff/Sauerstoff-Lanzen zum Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln, insbesondere von Sauerstoff oder sauerstoffhaltigen Gemischen, in eine Schmelzzone zur Erzeugung von Metallen, insbesondere von Gußeisen und Metalllegierungen in einem Ofenschacht eines Kupolofens, nach den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a positioning device for fuel / oxygen lances for the entry of inputs and fuels and oxidizing agents, in particular of oxygen or oxygenated mixtures, into a molten zone Production of metals, in particular of cast iron and metal alloys in a furnace shaft of a cupola, according to the characteristics of the generic term of Claim 1.
Eine gattungsgleiche Positioniereinrichtung für eine Sauerstoff-Injektionslanze ist aus DE 196 46 802 A 1 bekannt. Mittels dieser bekannten Positioniereinrichtung kann die mit einer Laval-Düse bestückte Injektionslanze zum Eintrag von Sauerstoff in einem in eine Schmelzzone einmündenden Einbringkanal eines Schmelzofens in Form eines Schachtofens eines Kupolofens, so positioniert werden, dass ein optimaler Sauerstoffeintrag in das in der Schmelzzone befindliche Koksbett erfolgt, wobei eine durch thermische Einflüsse der Schmelzzone verursachte Beschädigung der Injektionslanze, beispielsweise eine Verzunderung, dadurch verhindert wird, dass die Injektionslanze zur Eintragsdüse bzw. dem in der Schmelzzone des Schachtofens befindlichen Koksbett mit einem Sicherheitsabstand von 15 bis 20 mm angeordnet ist.A generic same positioning device for an oxygen injection lance is off DE 196 46 802 A 1 known. By means of this known positioning, the with a Laval nozzle equipped injection lance for the entry of oxygen in one entering a molten zone inlet channel of a melting furnace in the form a shaft furnace of a cupola, so positioned to be optimal Oxygen is introduced into the coke bed located in the molten zone, wherein a Damage caused by thermal influences of the molten zone Injection lance, for example, a scaling, thereby preventing the Injection lance to the entry nozzle or in the melting zone of the shaft furnace located coke bed with a safety margin of 15 to 20 mm is.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Positioniereinrichtung für Injektionslanzen zur Verfügung zu stellen, mittels welcher die Injektionslanze in dem in die Schmelzzone einmündenden Einbringkanal so positioniert werden kann, dass ein optimaler Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln in die Schmelzzone sowie ein selbsttätiges Verfahren der Injektionslanze aus der Schmelzzone möglich ist.The invention is therefore based on the object, a positioning device for To provide injection lances, by means of which the injection lance in the can be positioned in the molten zone inlet channel so that an optimal entry of inputs and fuels as well as oxidizing agents in the Melting zone and an automatic method of injection lance from the Melting zone is possible.
Diese Aufgabe wird durch eine Positioniereinrichtung für Injektionslanzen mit den Merkmalen von Anspruch 1 gelöst.This object is achieved by a positioning device for injection lances with the Characteristics of claim 1 solved.
Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention are the dependent claims remove.
Die erfindungsgemäße Positioniereinrichtung weist ein Führungsgehäuse mit einer Schlittenkammer und mit einem Führungseinbau auf, wobei die mit einer Federaufhängung verbundene Injektionslanze durch den beim Durchströmen des gasförmigen Injektionsmediums erzeugten Druck axial verschiebbar angeordnet ist.The positioning device according to the invention has a guide housing with a Schlittenkammer and with a guide installation on, with the with a Spring suspension connected injection lance by the flowing through the gaseous injection medium pressure is arranged axially displaceable.
Die in dem in die Schmelzzone einmündenden Einbringkanal positionierte Injektionslanze wird durch den beim Durchströmen des gasförmigen Injektionsmediums in dem Lanzenringspalt in Strömungsrichtung erzeugten Druck mittels des in einer Schlittenkammer zentrisch zur Injektionslanze angeordneten Führungseinbaus axial in Richtung der Schmelzzone bis zu einem Sicherheitsabstand von 15 - 20 mm zu der Düsenkante bzw. zu dem in der Schmelzzone befindlichen Koksbett verfahren und während des Mediumeintrags in die Schmelzzone in Betriebsposition gehalten.The positioned in the inflow into the melting zone inlet channel Injection lance is characterized by when flowing through the gaseous Injection medium in the lance ring gap generated in the flow direction pressure arranged by means of the centrifuge in a carriage chamber to the injection lance Guide installation axially in the direction of the melting zone up to a Safety distance of 15 - 20 mm to the nozzle edge or in the Melting bed coke bed process and during the medium entry in the melting zone kept in operating position.
Nach Beendigung des Eintrags von gasförmigen Einsatz- und Brennstoffen sowie von dem Oxidationsmittel in die Schmelzzone wird die Injektionslanze durch den von der Federaufhängung entgegen der Eintragsrichtung auf die Injektionslanze ausgeübten Federdruck selbsttätig wieder aus dem die Lanzenfunktion schädigenden Bereich der Schmelzzone in den Einbringkanal in eine Ruheposition zurückgezogen.After completion of the entry of gaseous fuels and from the oxidizing agent into the melting zone, the injection lance is replaced by the one from the spring suspension against the entry direction on the injection lance exerted spring pressure automatically back from the lance function damaging Retracted area of the molten zone in the introduction channel in a rest position.
Das bisherige manuelle, aus sicherheitstechnischen Gründen nicht unproblematische Zurückziehen der Injektionslanze aus der Schmelzzone, entfällt.The previous manual, not unproblematic for safety reasons Retracting the injection lance from the melting zone, is eliminated.
Die zum Zurückziehen der Injektionslanze mit dieser und dem Führungsgehäuse verbundene Federaufhängung besteht vorzugsweise aus einer Edelstahl-Spiralfeder.The retraction of the injection lance with this and the guide housing connected spring suspension is preferably made of a stainless steel coil spring.
Das Führungsgehäuse mit dem in dessen Schlittenkammer zum Verfahren der Injektionslanze zentrisch zu dieser angeordneten Führungseinbau bestehen vorzugsweise ebenfalls aus Edelstahl.The guide housing with the in the carriage chamber for the process of Injection lance centric to this arranged guide installation exist preferably also made of stainless steel.
Zur Gewährleistung einer homogenen Gasströmung ohne den Gasfluß negativ beeinflussende Wirbelbildung weist der Ringspalt zwei aufeinanderfolgende, unterschiedlich ausgebildete Einlaufstrecken E und T auf.To ensure a homogeneous gas flow without the gas flow negative influencing vortex formation, the annular gap has two consecutive, differently formed inlet sections E and T on.
Diesbezüglich ist es besonders günstig, wenn die Länge der Einlaufstrecke E mehr als das Fünffache des Durchmessers der Injektionslanze beträgt und die Länge der Einlaufstrecke T stets größer als der Durchmesser des Ringspalts ist.In this regard, it is particularly advantageous if the length of the inlet section E more as the fivefold of the diameter of the injection lance and the length of the Inlet distance T is always greater than the diameter of the annular gap.
Zur Berechnung der zum Zurückziehen der in dem Führungsgehäuse federgelagerten
Injektionslanze um die Distanz L in Lanzenruheposition erforderlichen
Federkonstanten D der Federaufhängung in Abhängigkeit von der Menge und dem
Strömungsdrucks DV des durch den Ringspalt der Injektionslanze in die Schmelzzone
strömenden Gasvolumenstroms und in Abhängigkeit von der Höhe der
Schlittenkammer H sowie in Abhängigkeit von dem Durchmesser der Injektionslanze
DL kann folgende Formel Verwendung finden:
Die erfindungsgemäße Positioniereinrichtung für Injektionslanzen zum Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln, insbesondere von reinem Sauerstoff oder sauerstoffhaltigem Gemisch, in eine Schmelzzone eines Schmelzofens zur Erzeugung von Metallen, insbesondere von Gußeisen und Metalllegierungen in einem Ofenschacht eines Kupolofens, gewährleistet ein selbsttätigen Verfahren der Injektionslanze in einem in die Schmelzzone einmündenden Einbringkanal, wodurch ein optimaler Gaseintrag in das in der Schmelzzone befindliche Koksbett und bei Lanzenruhestellung eine die Beschädigung oder Zerstörung ausschliessende Positionierung in dem Einbringkanal außerhalb der Schmelzzone gewährleistet ist.The positioning device according to the invention for injection lances for entry of Use and fuels and oxidizing agents, especially of pure Oxygen or oxygenated mixture, in a molten zone of a Melting furnace for the production of metals, in particular of cast iron and Metal alloys in a furnace shaft of a cupola furnace ensures a automatic process of the injection lance in one in the melting zone einmündenden feed channel, whereby an optimal gas entry into the in the Melting coke bed and at Lanzenruhestellung a Damage or destruction excluding positioning in the introduction channel is guaranteed outside the melting zone.
Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten, bevorzugten Ausführungsbeispiel näher erläutert.In the following the invention will be described with reference to a drawing shown in the drawing, preferred embodiment explained in more detail.
Fig. 1 zeigte eine schematische Schnittdarstellung einer erfindungsgemäßen Positioniereinrichtung für eine Injektionslanze;Fig. 1 shows a schematic sectional view of an inventive Positioning device for an injection lance;
Fig. 2 zeigt eine grafische Darstellung des Verhältnisses von Injektionslanzen- / Ringspalt-Durchmesser zum Gas-Durchflußmenge/-Strömungsdruck.2 shows a graphical representation of the ratio of injection lances / Annular gap diameter to gas flow rate / flow pressure.
Die in Fig. 1 dargestellte Positioniereinrichtung weist ein Führungsgehäuse 1 auf, in
dessen Schlittenkammer 5 die mit einer Federaufhängung 3 verbundene
Injektionslanze 2 mit einem Führungseinbau 4 axial verfahrbar angeordnet ist.The positioning device shown in Fig. 1 has a guide housing 1, in
whose
Die mit einem variablen Durchmesser DL ausgebildete Injektionslanze 2 weist einen das gasförmige Injektionsmedium (Einsatz- und Brennstoffe sowie Oxidationsmittel, insbesondere reiner Sauerstoff oder sauerstoffhaltiges Gasgemisch) in die Schmelzzone des Schmelzofens leitenden Ringspalt mit einem variablen Durchmesser s auf. Zur Gewährleistung einer wirbelfreien, homogenen Gasströmung ist der Ringspalt in zwei unterschiedliche, in Länge und Durchmesser variable Einlaufstrecken T und E unterteilt. Im Ergebnis von Versuchen wurde ermittelt, dass es besonders vorteilhaft ist, die Länge der Einlaufstrecke E größer als das Fünffache des Durchmessers DL der Injektionslanze 2 und die Länge der Einlaufstrecke T größer als den Ringspaltdurchmesser s zu wählen.The injection lance 2 formed with a variable diameter DL has a the gaseous injection medium (fuels and oxidizing agents, in particular pure oxygen or oxygen-containing gas mixture) into the melting zone of the melting furnace conducting annular gap with a variable diameter s. To ensure a vortex-free, homogeneous gas flow, the annular gap is in two different in length and diameter variable inlet sections T and E. divided. As a result of experiments it has been found that it is particularly advantageous is, the length of the inlet section E greater than five times the diameter DL the injection lance 2 and the length of the inlet section T is greater than the annular gap diameter s to choose.
Das von einer Gasquelle unter einem Druck von etwa 0,25 bis ca. 1 bar mit einem
Volumenstrom von 25 bis 55 Nm3/h durch eine Ringöffnung 1 a in das Führungsgehäuse
1 in die mittels der Positioniereinrichtung in einem in eine Schmelzzone
eines Schmelzofens einmündenden Einbringkanal axial verfahrbaren Injektionslanze
2 eingebrachte, gasförmige Injektionsmedium erzeugt beim Durchströmen des
Ringspalts in dem Ringspaltdurchmesser s einen in Strömungsrichtung wirkenden
Druck, durch den die Injektionslanze 2 mittels des zentrisch zur Injektionslanze 2
angeordneten Führungseinbaus 4 innerhalb der Schlittenkammer 5 des
Führungsgehäuses 1 bis zu einem Sicherheitsabstand von 15 - 20 mm zur
Düsenkante bzw. zu dem in der Schmelzzone befindlichen Koksbett axial verfahren
wird. Mittels der nunmehr in Betriebsposition befindlichen Injektionslanze 2 wird über
den Ringspaltdurchmesser s und dessen stirnseitige Düse/n das gasförmige Medium
in die Schmelzzone des Schmelzofens eingetragen. Nach Beendigung des
Eintragvorgangs wird die nunmehr nicht mehr durch das Injektionsmedium
druckbeaufschlagte Injektionslanze 2 durch die entgegengesetzt zur
Eintragungsrichtung wirkende Federkraft der Federaufhängung 3 innerhalb der
Schlittenkammer 5 des Führungsgehäuses 1 der Positioniereinrichtung um eine die
Beschädigung oder Zerstörung der Injektionslanze 2 durch thermische Einflüsse aus
der Schmelzzone verhindernde Distanz L in eine Ruheposition 2a aus der
Schmelzzone in den Einbringkanal zurückgezogen.The from a gas source at a pressure of about 0.25 to about 1 bar with a flow rate of 25 to 55 Nm 3 / h through an annular opening 1 a in the guide housing 1 in the means of the positioning in a merging into a molten zone of a melting furnace Injection channel axially movable injection lance 2 introduced, gaseous injection medium generated when flowing through the annular gap in the annular gap diameter s acting in the flow direction pressure through which the injection lance 2 by means of the injection lance 2 centrally arranged guide installation 4 within the
Das Führungsgehäuse 1 und der Führungseinbau 4 bestehen bevorzugt aus Edelstahl, ebenso wie die mit der Injektionslanze 2 und dem Führungsgehäuse 1 verbundene, vorzugsweise als Spiralfeder ausgebildete Federaufhängung 3.The guide housing 1 and the guide installation 4 are preferably made Stainless steel, as well as with the injection lance 2 and the guide housing. 1 connected, preferably designed as a spiral spring suspension 3
Fig. 2 ist das durch Versuche gefundene, nachfolgend graphisch dargestellte Verhältnis zwischen dem Injektionslanzen-/Ringspalt-Durchmesser DL/s in Abhängigkeit von dem den Lanzen-Ringspalt durchströmenden Gasvolumenstrom und dessen Strömungsdruck DV zu entnehmen: Fig. 2 is that found by experiment, shown graphically below Ratio between injection lance / annulus diameter DL / s in Dependence on the gas flow flowing through the lance annular gap and its flow pressure DV:
- 11
- Führungsgehäuseguide housing
- 1a1a
- Ringöffnungring opening
- 22
- Injektionslanze (Betriebsposition)Injection lance (operating position)
- 2a2a
- Injektionslanze (Ruheposition)Injection lance (rest position)
- 33
- Federaufhängungspring suspension
- 44
- Führungseinbauinstallation guide
- 55
- Schlittenkammerslide chamber
- LL
- Rückzugsdistanz InjektionslanzeRetraction distance injection lance
- TT
- Einlaufstreckeinlet section
- ss
- Durchmesser Ringspalt (Injektionslanze)Diameter annular gap (injection lance)
- DLDL
- Durchmesser InjektionslanzeDiameter injection lance
- Ee
- Einlaufstreckeinlet section
Claims (9)
- Positioning device for fuel/oxygen lances for introducing feed materials and fuels and also oxidizing agents, in particular oxygen or oxygen-containing mixtures, into a melting zone of a melting furnace for producing metals, in particular, cast iron and metal alloys in a furnace shaft of a cupola furnace, by means of which the injection lance (2) is arranged axially displaceably in an introduction duct which opens out into the melting zone, characterized in that the positioning device has a guide housing (1) with a carriage chamber (5) and with a guide insert (4), the injection lance (2), which is connected to a spring suspension means (3), being arranged such that it can be moved in the axial direction by the pressure generated as the gaseous injection medium flows through.
- Positioning device according to Claim 1, characterized in that the guide insert (4), which can displace the injection lance (2) in the axial direction, is arranged centrally with respect to the injection lance (2).
- Positioning device according to Claim 1, characterized in that the spring suspension means (3), which preferably comprises a stainless steel coil spring, is connected to the injection lance (2) and to the guide housing (1).
- positioning device according to one of the preceding claims, characterized in that the guide housing (1) with annular gap (1a) and the guide insert (4) preferably consist of stainless steel.
- Positioning device according to one of the preceding claims, characterized in that the injection lance (2) has an annular gap, which guides the injection medium, of variable diameter.
- Positioning device according to Claim 1, characterized in that the annular gap of the injection lance (2) has two successive entry sections (E, T) preventing the gas flow from being swirled up.
- Positioning device according to one of the preceding claims, characterized in that the length of the entry section (E) of the injection lance (2) is more than five times the diameter (DL) of the injection lance (2) .
- Positioning device according to one of the preceding claims, characterized in that the length of the entry section (T) of the injection lance (2) is greater than the annular gap diameter (s).
- Positioning device according to one of the preceding claims, characterized in that the annular gap of the injection lance (2) has a diameter (s) which is variable as a function of the volumetric flow of the injection medium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10060727 | 2000-12-07 | ||
| DE10060727A DE10060727A1 (en) | 2000-12-07 | 2000-12-07 | Positioning device for fuel / oxygen lances |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1213553A2 EP1213553A2 (en) | 2002-06-12 |
| EP1213553A3 EP1213553A3 (en) | 2003-10-01 |
| EP1213553B1 true EP1213553B1 (en) | 2005-12-07 |
Family
ID=7666069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01128686A Expired - Lifetime EP1213553B1 (en) | 2000-12-07 | 2001-12-01 | Positioning device for combustible/oxygen lances |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1213553B1 (en) |
| AT (1) | ATE312327T1 (en) |
| DE (2) | DE10060727A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0910736D0 (en) * | 2009-06-22 | 2009-08-05 | Pilkington Group Ltd | Improved film thickness measurement |
| CN113878785B (en) * | 2021-10-11 | 2024-03-19 | 长虹美菱股份有限公司 | Annotate material rifle head and have its refrigerator cabinet polyurethane notes material system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3626501A (en) * | 1968-03-18 | 1971-12-07 | Atlantic Richfield Co | Apparatus for injecting fluid fuel into a blast furnace |
| FR2702221B1 (en) * | 1993-03-03 | 1995-04-28 | Air Liquide | Process for obtaining metal from the blast furnace or cupola. |
| US5544868A (en) * | 1995-07-31 | 1996-08-13 | National Steel Corporation | Blow pipe and gas lance for blast furance |
| DE19547885C1 (en) * | 1995-12-21 | 1997-09-11 | Beda Oxygentech Armatur | Pneumatic holder for lance manipulator |
| DE19646802A1 (en) * | 1996-11-13 | 1998-05-14 | Messer Griesheim Gmbh | Method and device for operating a shaft furnace |
| EP1085265A1 (en) * | 1999-09-17 | 2001-03-21 | Kemter, Andreas | Injection lance for introducing liquid or gaseous media into a flue gas flow |
-
2000
- 2000-12-07 DE DE10060727A patent/DE10060727A1/en not_active Ceased
-
2001
- 2001-12-01 DE DE50110026T patent/DE50110026D1/en not_active Expired - Lifetime
- 2001-12-01 EP EP01128686A patent/EP1213553B1/en not_active Expired - Lifetime
- 2001-12-01 AT AT01128686T patent/ATE312327T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1213553A3 (en) | 2003-10-01 |
| DE50110026D1 (en) | 2006-07-20 |
| ATE312327T1 (en) | 2005-12-15 |
| DE10060727A1 (en) | 2002-06-27 |
| EP1213553A2 (en) | 2002-06-12 |
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