FR2542014A1 - Device for cleaning the nozzles of a steelworks converter - Google Patents
Device for cleaning the nozzles of a steelworks converter Download PDFInfo
- Publication number
- FR2542014A1 FR2542014A1 FR8303535A FR8303535A FR2542014A1 FR 2542014 A1 FR2542014 A1 FR 2542014A1 FR 8303535 A FR8303535 A FR 8303535A FR 8303535 A FR8303535 A FR 8303535A FR 2542014 A1 FR2542014 A1 FR 2542014A1
- Authority
- FR
- France
- Prior art keywords
- lance
- plate
- oxygen
- orifices
- nose
- 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.)
- Granted
Links
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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1694—Breaking away the lining or removing parts thereof
-
- 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
- C21C5/4693—Skull removal; Cleaning of the converter mouth
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)
Abstract
Description
Dispositif pour le décrassage des becs de convertisseur d'Acierie
La présente invention concerne un dispositif permettant de canaliser le jet d'oxygène de la lance principale de soufflage dans un convertisseur d'Acierie, afin de fondre les loups se formant sur le pourtour intérieur du bec de ce convertisseur et réduisant le diamètre d'ouverture de ce bec.Device for descaling the nozzle of the Acierie converter
The present invention relates to a device making it possible to channel the jet of oxygen from the main blowing lance into a steelworks converter, in order to melt the wolves forming on the inner periphery of the nozzle of this converter and reducing the opening diameter of this beak.
Le nettoyage du bec d'un convertisseur se fait habituellement par grattage ou martelage du loup avec des moyens divers, ou par un soufflage à la lance principale d'oxygène en remontant celle-ci au-dessus du bec. Cleaning the beak of a converter is usually done by scraping or hammering the wolf with various means, or by blowing with the main oxygen lance by raising it above the beak.
Ces procédés ne permettent pas d'obtenir une destruction efficace rapide et totale du loup de bec et présentent des risques de détérioration du bec et des réfractaires du four.These methods do not make it possible to obtain an effective rapid and total destruction of the beak wolf and present risks of deterioration of the beak and of the refractories of the oven.
Le dispositif, selon l'invention, permet de remédier à ces inconvénients en canalisant le jet d'oxygène vers la matière à éliminer. il se compose d'un déflecteur à orifice variable qui s'adapte à l'extrêmité de la lance à l'aide de tirants à montage rapide. Cette adaptation se fait sans modification sur les lances existantes. Le déflecteur comporte plusieurs orifices que l'on occulte ou réduit à l'aide de tampons de matière réfractaire ou de pièces mécaniques amovibles réglables en position. The device according to the invention overcomes these drawbacks by channeling the jet of oxygen towards the material to be eliminated. it consists of a deflector with variable orifice which adapts to the end of the lance using quick-assembly tie rods. This adaptation is done without modification on the existing lances. The deflector has several orifices which are obscured or reduced using refractory pads or removable mechanical parts adjustable in position.
Selon une variante de l'invention, le déflecteur de jet d'oxygène est équipé de secteurs amovibles dont on peut faire varier le nombre et la position pour créer des passages de l'oxygène dans les directions et avec la section désirée. According to a variant of the invention, the oxygen jet deflector is equipped with removable sectors, the number and position of which can be varied to create oxygen passages in the directions and with the desired section.
a mise en place du dispositif déflecteur se réalise avec un accessoire de montage placé sur le puits de lance de la hotte qui assure le contact du dispositif de décrassage et de la lance pendant la mise en place des tirants. he installation of the deflector device is carried out with a mounting accessory placed on the lance well of the hood which ensures contact with the scouring device and the lance during the installation of the tie rods.
Les figures 1 et 2 représentent une coupe axiale et une coupe perpendiculaire à cet axe d'un dispositif selon l'invention. Figures 1 and 2 show an axial section and a section perpendicular to this axis of a device according to the invention.
Les figures 3 et 4 représentent une variante à ce dispositif. Figures 3 and 4 show a variant of this device.
Les figures 5 et & l'accessoire de montage. Figures 5 and & the mounting accessory.
Le dispositif présenté sur la figure 1 et 2 comporte une plaque circulaire (1) en acier réfractaire qui se fixe sur l'embout (2) de la lance à oxygène appelé nez par l'intermédiaire de tirants (3) : le nombre des dits tirants est, par exemple, de 5 dans l'exemple décrit. Ces tirants comportent à une extrémité un ergot d'appui (4) et à l'autre un filetageécrou (5). The device presented in FIGS. 1 and 2 comprises a circular plate (1) of refractory steel which is fixed on the end piece (2) of the oxygen lance called nose by means of tie rods (3): the number of said tie rods is, for example, 5 in the example described. These tie rods comprise at one end a lug (4) and at the other a nut thread (5).
-Le tirant (3) est introduit dans l'un des orifices du nez de la lance servant normalement au passage de l-'oxygène. Ledit tirant est disposé de façon à ce que l'ergot (4) soit en contact avec la paroi interne du nez. Il est guidé par une portion de tube (8) solidaire de la plaque (1). -The tie rod (3) is introduced into one of the orifices of the nose of the lance normally used for the passage of oxygen. Said tie rod is arranged so that the lug (4) is in contact with the internal wall of the nose. It is guided by a portion of tube (8) integral with the plate (1).
L'écrou (5) est plein pour protéger le filetage. The nut (5) is full to protect the thread.
Une vis de serrage (6) immobilise le tirant (3). A clamping screw (6) immobilizes the tie rod (3).
Dans une variante, on peut avantageusement donner à l'écrou (5) une forme élargie de fanon à ménager à l'intérieur dudit écrou un espace (9) communiquant avec le flux d'oxygène qui s'échappe à l'extérieur par des orifices (10) traversant radialement l'écrou. La circulation d'oxygène ainsi créée refroidit l'ensemble filetage-écrou (5) et le protége de la flamme. Alternatively, it is advantageous to give the nut (5) an enlarged form of baleen to be provided inside said nut a space (9) communicating with the flow of oxygen which escapes outside by orifices (10) passing radially through the nut. The oxygen circulation thus created cools the thread-nut assembly (5) and protects it from the flame.
Sur la plaque (1) est fixée une virole (11), une deuxième virole (12) est reliée à la première virole (11) et à la plaque (1) par des plaques verticales (13) et des cornières (14) dont le rôle est de créer un effet convergent dans le flux d'oxygène. L'ensemble répartit l'oxygène dans le plan horizontal, en plusieurs chambres, par exemple 5 sur l'exemple décrit. On the plate (1) is fixed a ferrule (11), a second ferrule (12) is connected to the first ferrule (11) and to the plate (1) by vertical plates (13) and angles (14) of which the role is to create a converging effect in the oxygen flow. The assembly distributes the oxygen in the horizontal plane, in several chambers, for example 5 in the example described.
Les chambres débouchent sur un ou plusieurs orifices (15) : 2 dans l'exemple décrit. Les orifices (15) ainsi constitués sont bouchés à la demande par des matériaux réfractaires facilement retirables, par exemple des briques et du ciment (16).The chambers open onto one or more orifices (15): 2 in the example described. The orifices (15) thus formed are plugged on demand by refractory materials which are easily removable, for example bricks and cement (16).
Il est aussi possible de fixer des pièces métalliques amovibles (17) de formes appropriées sur la plaque (1) pour réduire les orifices (15) ou pour obtenir un effet de déflexion sur le jet d'oxygène dans le plan vertical. It is also possible to fix removable metal parts (17) of appropriate shapes on the plate (1) to reduce the orifices (15) or to obtain a deflection effect on the oxygen jet in the vertical plane.
Les figures 3 et 4 représentent une autre réalisation du dispositif, dans laquelle il est constitué une chambre annulaire entre la virole (11) et des secteurs de virole amovibles (18) fixées par des boulons (19) sur la plaque (1), et, venant en contact avec le nez (2) de la lance. FIGS. 3 and 4 show another embodiment of the device, in which an annular chamber is formed between the ferrule (11) and removable ferrule sectors (18) fixed by bolts (19) on the plate (1), and , coming into contact with the nose (2) of the lance.
La position ae ces secteurs (18) et leur nombre délimite des zones de passage de l'oxygène, à la demande, sur la périphérie du dispositif. The position ae these sectors (18) and their number delimits oxygen passage zones, on demand, on the periphery of the device.
Les figures 5 et 6 représentent l'accessoire utilisé pour le montage du dispositif de décrassage sur la lance à oxygène. Figures 5 and 6 show the accessory used for mounting the cleaning device on the oxygen lance.
Cet accessoire se pose sur le puits de lance de la Hotte (20) : il se compose d'une plaque circulaire nervurée (21) qui obture le puits pour empêcher sa chaleur de rayonner. Cette plaque (21) est équipée en son centre d'une tige (22) sur laquelle est enfilé un ressort en hélice (23). Cette tige 22 coulisse dans un orifice tubulaire (24) situé au centre de la plaque (21) ; ladite tige supporte en son extrémité un embout (25) amortisseur en matériau élastique posé sur une rondelle (26). Ladite rondelle sert également d'appui au ressort (23). This accessory is placed on the lance well of the Hood (20): it consists of a ribbed circular plate (21) which closes the well to prevent its heat from radiating. This plate (21) is equipped in its center with a rod (22) on which is threaded a helical spring (23). This rod 22 slides in a tubular orifice (24) located in the center of the plate (21); said rod supports at its end an end piece (25) shock absorber of elastic material placed on a washer (26). Said washer also serves as a support for the spring (23).
Pendant le montage, l'appareil à décrasser est disposé sur l'embout (25) et l'on fait descendre la lance 2 en contact avec ledit appareil. Le ressort (23) limite le choc dû au contact et maintient l'appareil appliqué contre le nez de la lance pendant la mise en place des tirants (3). During assembly, the device to be cleaned is placed on the end piece (25) and the lance 2 is lowered into contact with said device. The spring (23) limits the shock due to contact and keeps the device applied against the nose of the lance during the fitting of the tie rods (3).
La plaque (21) posée sur le puits de la lance (20) sert d'écran à la chaleur rayonnée par le puits. The plate (21) placed on the well of the lance (20) serves as a screen for the heat radiated by the well.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8303535A FR2542014B1 (en) | 1983-03-02 | 1983-03-02 | DEVICE FOR CLEARING STEEL CONVERTER SPOUT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8303535A FR2542014B1 (en) | 1983-03-02 | 1983-03-02 | DEVICE FOR CLEARING STEEL CONVERTER SPOUT |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2542014A1 true FR2542014A1 (en) | 1984-09-07 |
FR2542014B1 FR2542014B1 (en) | 1985-06-21 |
Family
ID=9286481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8303535A Expired FR2542014B1 (en) | 1983-03-02 | 1983-03-02 | DEVICE FOR CLEARING STEEL CONVERTER SPOUT |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2542014B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514246A1 (en) * | 1991-05-13 | 1992-11-19 | Sollac | Steel decarburation process in a vacuum treatment chamber and vacuum treatment chamber therefor |
EP0816517A1 (en) * | 1996-06-25 | 1998-01-07 | LTV Steel Company, Inc. | Preventing skull accumulation on a steelmaking lance |
US5865876A (en) * | 1995-06-07 | 1999-02-02 | Ltv Steel Company, Inc. | Multipurpose lance |
JP2015054984A (en) * | 2013-09-11 | 2015-03-23 | Jfeスチール株式会社 | Jig for removal of base metal in throat of converter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1005539B (en) * | 1951-03-13 | 1957-04-04 | Oesterr Alpine Montan | Device to avoid the build-up of iron bears when hot metal is blown in the converter |
FR1345757A (en) * | 1962-11-02 | 1963-12-13 | Siderurgie Fse Inst Rech | Method and device for adjusting the height of a refining lance |
FR1518141A (en) * | 1967-04-06 | 1968-03-22 | Nova Hut Klementa Gottwalda Na | Blowing lance for the combustion of liquid fuels by means of oxidation gases |
FR2282475A1 (en) * | 1974-08-20 | 1976-03-19 | Kraizinger Fedor | Tuyere for top-blown steel converters - contg. coaxial inner tube so several reactants can be fed to molten metal |
US4322033A (en) * | 1978-07-10 | 1982-03-30 | Pullman Berry Company | Lance and method for removing skulls from steelmaking vessels |
-
1983
- 1983-03-02 FR FR8303535A patent/FR2542014B1/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1005539B (en) * | 1951-03-13 | 1957-04-04 | Oesterr Alpine Montan | Device to avoid the build-up of iron bears when hot metal is blown in the converter |
FR1345757A (en) * | 1962-11-02 | 1963-12-13 | Siderurgie Fse Inst Rech | Method and device for adjusting the height of a refining lance |
FR1518141A (en) * | 1967-04-06 | 1968-03-22 | Nova Hut Klementa Gottwalda Na | Blowing lance for the combustion of liquid fuels by means of oxidation gases |
FR2282475A1 (en) * | 1974-08-20 | 1976-03-19 | Kraizinger Fedor | Tuyere for top-blown steel converters - contg. coaxial inner tube so several reactants can be fed to molten metal |
US4322033A (en) * | 1978-07-10 | 1982-03-30 | Pullman Berry Company | Lance and method for removing skulls from steelmaking vessels |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514246A1 (en) * | 1991-05-13 | 1992-11-19 | Sollac | Steel decarburation process in a vacuum treatment chamber and vacuum treatment chamber therefor |
FR2676458A1 (en) * | 1991-05-13 | 1992-11-20 | Lorraine Laminage | PROCESS FOR DECARBURIZING STEEL IN A VACUUM TREATMENT ENCLOSURE AND VACUUM TREATMENT ENCLOSURE FOR IMPLEMENTING THE METHOD. |
WO1992020986A1 (en) * | 1991-05-13 | 1992-11-26 | Sollac | Method for decarburizing steel in a vacuum chamber, and vaccum chamber for implementing the method |
US5332417A (en) * | 1991-05-13 | 1994-07-26 | Sollac | Method for decarburisation of steel in a vacuum treatment chamber and vacuum treatment chamber for implementing the method |
US5865876A (en) * | 1995-06-07 | 1999-02-02 | Ltv Steel Company, Inc. | Multipurpose lance |
EP0915995A1 (en) * | 1996-05-01 | 1999-05-19 | LTV Steel Company | Multipurpose lance |
EP0915995A4 (en) * | 1996-05-01 | 1999-07-28 | Ltv Steel Co Inc | Multipurpose lance |
EP0816517A1 (en) * | 1996-06-25 | 1998-01-07 | LTV Steel Company, Inc. | Preventing skull accumulation on a steelmaking lance |
JP2015054984A (en) * | 2013-09-11 | 2015-03-23 | Jfeスチール株式会社 | Jig for removal of base metal in throat of converter |
Also Published As
Publication number | Publication date |
---|---|
FR2542014B1 (en) | 1985-06-21 |
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Legal Events
Date | Code | Title | Description |
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ST | Notification of lapse |