DE10341177A1 - Process for improving the injection technique during steel production in lance oxygen steel making installations comprises integrating the lance at a steep angle in the hood on the mouth of an exhaust gas flue - Google Patents
Process for improving the injection technique during steel production in lance oxygen steel making installations comprises integrating the lance at a steep angle in the hood on the mouth of an exhaust gas flue Download PDFInfo
- Publication number
- DE10341177A1 DE10341177A1 DE2003141177 DE10341177A DE10341177A1 DE 10341177 A1 DE10341177 A1 DE 10341177A1 DE 2003141177 DE2003141177 DE 2003141177 DE 10341177 A DE10341177 A DE 10341177A DE 10341177 A1 DE10341177 A1 DE 10341177A1
- Authority
- DE
- Germany
- Prior art keywords
- lance
- hood
- improving
- mouth
- exhaust gas
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich auf eine Verbesserung und Erweiterung der Einblastechnik bei der Stahlerzeugung in Blasstahlwerken.The The present invention relates to an improvement and extension blow-in technology for steelmaking in blown steel mills.
Es ist bekannt, Prozeßgase, wie z.B. Sauerstoff, durch eine senkrechte Lanze mittig in das Reaktionsgefäß einzublasen, ebenso zusätzliche Gase, wie z.B. Argon, durch Boden-und Seitendüsen direkt in die Stahlschmelze einzublasen.It is known, process gases, such as. Oxygen, to be blown in the center of the reaction vessel by a vertical lance, as well additional Gases, e.g. Argon, through bottom and side nozzles directly into the molten steel blow.
Zwischen der Reaktionsgefäßmündung und dem darüber befindlichem Abgaskamin ist ein größerer Luftspalt erforderlich, um das Reaktionsgefäß beim Befüllen und Entleeren kippen zu können.Between the reaction vessel mouth and the about that flue gas is required a larger air gap, around the reaction vessel during filling and To be able to dump emptying.
Um die bei der Stahlerzeugung entstehenden CO-Gase gewinnen zu können, wird dieser Luftspalt durch eine Absenkhaube während des Produktionsprozesses geschlossen. Viele Versuche zusätzliche Einblaslanzen durch diesen Luftspalt in das Reaktionsgefäß einzuführen, um weitere Produktionsgase, vornehmlich auch zur Schrottvorwärmung einzublasen, scheiterten.Around to be able to recover the CO gases produced during steelmaking this air gap through a Absenkhaube during the production process closed. Many attempts additional Introduce injection lances through this air gap in the reaction vessel to to blow in further production gases, primarily also for preheating scrap, failed.
Probleme sind die Standfestigkeit der Lanzen durch die hohe Temperaturbeanspruchung in waagerechter Lanzenlage, der Verlust des CO-Gases, daß durch die zutretende Luft gleich verbrannt wird und damit den Kühlkaminaufwand erhöht, sowie durch einen aufwendigen Lärmschutz um das Reaktionsgefäß, da das einzubringende Gas mit sehr hohen Geschwindigkeiten eingeblasen werden muß.issues are the stability of the lances due to the high temperature stress in horizontal lance, the loss of CO gas that through The entrant air is burned the same and thus the chimney cost elevated, as well as through a complex noise protection around the reaction vessel, since the injected gas injected at very high speeds must become.
Die vorliegende Erfindung hat sich die Aufgabe gestellt, diese oben genannten Probleme und Nachteile durch eine geeignete Lanzeneinblasvorrichtung, integriert in die Absenkhaube der Abgaskaminanlage, zu vermeiden.The The object of the present invention is to provide these above mentioned problems and disadvantages by a suitable Lanzeneinblasvorrichtung, integrated into the lowering hood of the exhaust chimney system, to avoid.
Hierbei werden die Einblaslanzen nach dem Absenken der Absenkhaube auf das Reaktionsgefäß unter einem möglichst steilen Winkel durch eine Öffnung in der Absenkhaube in die Mündung des Reaktionsgefäßes eingefahren, automatisch verbunden mit der Zuführungsleitung des Produktionsgases, und nach dem Produktionsprozess, automatisch wieder ausgefahren, bevor die Absenkhaube mit der Lanzenanlage wieder angehoben wird.in this connection the injection lances are after lowering the Absenkhaube on the Reaction vessel under one possible steep angle through an opening in the lowering hood in the mouth retracted the reaction vessel, automatically connected to the supply line of the production gas, and after the production process, automatically extended again before the lowering hood with the lance system is raised again.
Weitere
Einzelheiten und Merkmale der Erfindung sind aus dem nachfolgenden
Ausführungsbeispiel
zu entnehmen. Der Arbeitsablauf des erfindungsgemäßen Einblasverfahrens
kann aus
Gemäß der Erfindung vollzieht sich der Produktionsverlauf einer Stahlschmelze wie folgt.According to the invention The production process of a molten steel takes place as follows.
Auf
das Reaktionsgefäß
Nach
Blasende wird das Ventil
Mit
den vier Hubarmen
Die
Hauptzuführungsleitung
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003141177 DE10341177A1 (en) | 2003-09-06 | 2003-09-06 | Process for improving the injection technique during steel production in lance oxygen steel making installations comprises integrating the lance at a steep angle in the hood on the mouth of an exhaust gas flue |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003141177 DE10341177A1 (en) | 2003-09-06 | 2003-09-06 | Process for improving the injection technique during steel production in lance oxygen steel making installations comprises integrating the lance at a steep angle in the hood on the mouth of an exhaust gas flue |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10341177A1 true DE10341177A1 (en) | 2005-03-31 |
Family
ID=34223419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003141177 Withdrawn DE10341177A1 (en) | 2003-09-06 | 2003-09-06 | Process for improving the injection technique during steel production in lance oxygen steel making installations comprises integrating the lance at a steep angle in the hood on the mouth of an exhaust gas flue |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10341177A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100455680C (en) * | 2007-06-08 | 2009-01-28 | 中钢集团鞍山热能研究院 | Automatic regulating lance device for steel making oxygen lance |
-
2003
- 2003-09-06 DE DE2003141177 patent/DE10341177A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100455680C (en) * | 2007-06-08 | 2009-01-28 | 中钢集团鞍山热能研究院 | Automatic regulating lance device for steel making oxygen lance |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8130 | Withdrawal |