EP0464427B1 - Vorrichtung zum automatischen Ankuppeln einer Einblaslanze an ein Sammelgefäss - Google Patents

Vorrichtung zum automatischen Ankuppeln einer Einblaslanze an ein Sammelgefäss Download PDF

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Publication number
EP0464427B1
EP0464427B1 EP91109809A EP91109809A EP0464427B1 EP 0464427 B1 EP0464427 B1 EP 0464427B1 EP 91109809 A EP91109809 A EP 91109809A EP 91109809 A EP91109809 A EP 91109809A EP 0464427 B1 EP0464427 B1 EP 0464427B1
Authority
EP
European Patent Office
Prior art keywords
lance
collector
holding carriage
carriage
collector unit
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
Application number
EP91109809A
Other languages
English (en)
French (fr)
Other versions
EP0464427A3 (en
EP0464427A2 (de
Inventor
Hubert Stomp
Daniel Fries
Serge Devillet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0464427A2 publication Critical patent/EP0464427A2/de
Publication of EP0464427A3 publication Critical patent/EP0464427A3/fr
Application granted granted Critical
Publication of EP0464427B1 publication Critical patent/EP0464427B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21C5/30—Regulating or controlling the blowing
    • 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

Definitions

  • the present invention relates to a device for automatic coupling of an insufflation lance to a manifold which is in communication with conduits conveying fluids intended to be injected into a molten metal bath through channels evolving through the lance which is mounted on a lance-carrying carriage movable vertically along a slide, the manifold comprising means for being coupled, in a sealed manner to the lance head.
  • the invention relates more particularly to the lances used for the conversion of cast iron to steel and which are immersed in the converter to inject the refining substances into the metal bath.
  • These lances comprise, for this purpose, a series of channels, generally concentric, for the insufflation of these substances and for the cooling of the lance.
  • US Patent 3,972,515 proposes a device for coupling such a lance in a sealed manner, to a manifold which is in communication with the pipes serving the lance in refining substances and in coolant.
  • the contact surfaces between the lance and the collector must, of course, be designed as sealing surfaces to prevent any leakage of these gaseous and liquid substances, while the clamping between the collector and the lance must be powerful enough to preserve this sealing.
  • the lance is fixed to the collector manually by means of tightening bolts.
  • the lance is fixed to the collector automatically by means of pivoting hooks actuated by hydraulic cylinders.
  • the fixing between the lance and the collector must not only ensure sealing at the level of the joint surfaces, but also the support of the lance since the latter is carried by the collector. It follows that a very rigid attachment is necessarily required between the lance and the collector, with the consequence that the collector, the seal and the pipes are necessarily exposed to the vibrations of the lance.
  • the object of the present invention is to provide an improved device of the kind described above, in which the coupling of the lance to the collector is also carried out automatically, but in which, unlike known devices, the contact surfaces and of joint between the collector and the lance are not exposed to vibrations, or even to shocks which the lance undergoes during its operation and its handling.
  • the automatic coupling device proposed by the present invention is essentially characterized by means for rigidly hooking the lance to the lance-carrying carriage, and by means ensuring the support of the manifold relative to the lance-carrying carriage and allowing vertical movement of the manifold relative to the lance-carrying carriage, or vice-versa.
  • the collector is mounted on a collector trolley which can either be made integral, via the collector and the lance, with the lance trolley, or be immobilized, by gravity, relative to the slide of the latter.
  • the collector can be mounted by means of elastic means on the collector-carrying carriage.
  • it may include a peripheral flange by which it is supported between three pairs of vertical springs fixed on a plate secured to the collector-carrying carriage.
  • the lance-carrying carriage can be moved by means of guide rollers relative to the collector-carrying carriage when the latter is immobilized relative to the slide.
  • This immobilization can be achieved by a cleat movable under the action of a jack to support the lance carrier carriage relative to the slide.
  • the collector carrier trolley is supported by at least one jack mounted on the lance carrier trolley to move the collector carrier trolley during a lance change.
  • the collector slides directly without an intermediate collector holder, on the lance-carrying carriage and can be supported with respect thereto either by a movable cleat, or by a jack as in the first embodiment.
  • the device proposed by the present invention provides for rigidly hanging the lance on the lance-carrying carriage and ensuring the support of the collector via the carriage lance holder.
  • the vibrations and shocks to which the lance is exposed are therefore transmitted to the lance-carrying carriage.
  • the collector thanks to its non-rigid suspension, the collector can, when it is integral with the lance head, adapt to the vibrations of the latter without disturbing the seal at its joint with the lance.
  • the latter may comprise two hooks pivoting under the action of hydraulic cylinders by means of rods eccentric with respect to the axis of the hooks.
  • the lance may comprise two pairs of pins, while the carriage comprises two pairs of supports, each provided with notches for receiving and carrying the pins of the lance, while that each of said notches is associated with a hook actuated by a jack to block the pins in the notches and secure the lance with the lance-carrying carriage.
  • the figures show a lance-carrying carriage 8 designed to be moved vertically, eg using guide rollers 12 along a slide or raceway 10, eg using cables or chains moving around pulleys 14 in order to immerse a lance 16 attached to the carriage 8 in a converter not shown and to extract it.
  • a lance 16 In view of the attachment of a lance 16 to the carriage 8, the latter comprises a pair of upper supports 18 and a pair of lower supports 20. In the figures, one of the supports of each pair is hidden by the one which is visible in the figures.
  • the two supports of each pair are sufficiently spaced, horizontally, one from the other to be able to engage between them the lance 16 transported using a hook 22.
  • the two supports 18, 20 are provided with notches 30 , 32 corresponding to a pair of upper pins 28 and a pair of lower pins 26 provided on the lance 16 and by which the latter is deposited in the notches 30, 32 by means of the hook 22, another pair of pins 24 serving when the lance 16 is hooked to the hook 22.
  • Each of the notches 30, 32 is associated with one or more, preferably, two pairs of upper and lower hooks 34, 36 (one of the hooks of each of the pairs being only visible in the figures) to secure the lance 16 in the notches 30, 32 and the connection between the lance 16 and the carriage 8.
  • Each pair of hooks 34, 36 is actuated by one, preferably, a pair of jacks 38, 40.
  • the hooks 34 and 36 are mounted as in document DE-A1-38 28 928 on eccentric axes so as to effect, in a manner known per se, a movement composed of a pivoting and a translation.
  • the hooks 34 pivot around their axis, followed by a slight downward movement of their axis to enclose the pins 28 in the notches 30.
  • the hooks 36 by against, effect under the action of the jack or jacks 40, owing to their eccentric mounting, essentially a horizontal translational movement, of small amplitude, in order to wedge or release the pins 26 in the notches 32.
  • the reference 42 designates a collector which is in communication with the pipes 44 which transport the refining substances, as well as the cooling pipes 46.
  • the manner in which these pipes are connected to the manifold 42 and passes through it is shown in more detail. in the two aforementioned documents illustrating the state of the art.
  • the collector 42 is mounted by means of elastic means on a collector-carrying carriage 48 which can slide vertically relative to the lance-carrying carriage 8 and vice versa, by the 'intermediate roller 50.
  • the manifold 42 has a peripheral flange 52 by which it is carried between a group of several upper coil springs 54 and a group of lower coil springs 56, some of these upper and lower springs being hidden in the figure.
  • Each of these upper and lower springs 54 and 56 are attached by means of a coaxial rod to a plate 60 which is integral with the collector-carrying carriage 48.
  • the collector 42 therefore has a certain freedom of movement between the upper springs 54 and lower springs 56.
  • the proposed device further comprises means for immobilizing the collector carrier trolley 48 relative to the slide 10, the lance carrier trolley 8 remaining however free to slide vertically relative to the collector carrier trolley 48 and the slide 10.
  • these means consist of a stopper 62 which can be moved horizontally under the action of a jack 64. When the jack 64 is in extension as shown in FIG. 1, the stopper 62 penetrates below the carriage 48 and forms a stop supporting the carriage and the collector 42.
  • a stopper 62 it is also possible to provide a pivoting cleat.
  • a lance 16 is brought by the hook 22 and is deposited by the pins 28 and 26 in the notches 30 and 32. Then the hook 22 can be lowered until the lance 16 is carried by the pins 28 and 26 in the notches 30, 32 after which the hook 22 can be released (see Figure 2). Then the jacks 38 and 40 are actuated to wedge the pins 28 and 26 of the lance 16 in the notches 30 and 32 (see FIG. 3) and make the lance 16 completely integral with the carriage 8.
  • the next step consists in making the coupling between the manifold 42 and the joint plane 70 of the lance 16.
  • the manifold 42 comprises a pair of hooks 66 actuated under the effect of rods with eccentric pivoting when the plate 67 is moved by hydraulic cylinders 69.
  • These hooks 66 are comparable to the hooks 34, that is to say that they are mounted on an axis which, by pivoting, performs a slight translation in the vertical direction thanks to the eccentric rods relative to the axis of the hooks.
  • the lance-carrying carriage 8 is raised in the position of FIG. 4 until the joint plane 70 of the lance 16 is in contact with the underside of the manifold 42 or in the immediate vicinity thereof, which for this purpose may include a bowl for receiving the lance 16 with the appropriate seals. Then actuating the jacks 68 to close the hooks 66 and hang the pins 28 as shown in Figure 5.
  • the collector 42 is, therefore, completely integral with the lance 16 and, therefore, the lance holder carriage 8 .
  • the following operation consists in actuating the jack 64 and retracting the rod of the latter in order to disengage the cleat 62 from the collector carrier carriage 48 (fig.5) and to release it relative to the slide 10.
  • the carriage 48 is now supported by the lance-carrying carriage 8 via the springs 54, 56, the manifold 42 and the lance 16. It is therefore sufficient to lower the assembly formed by the two carriages 8 and 48 along the slide 10 for immersing the lance 16 in the converter.
  • the dismantling of a lance 16 comprises, of course, the same scenario in the opposite direction, that is to say, first the ascent of the carriage 8 to remove the lance 16 from the converter, the operation of the jack 64 to wedge the collector-holder carriage 48, the opening of the hooks 66, the descent of the lance-holder carriage 8, the opening of the hooks 34 and 36 and the release of the lance 16 by means of the hook 22.
  • FIG. 6 represents a variant of the embodiment above and which makes it possible to remove the cleat 62 and its jack 64.
  • the collector carrier carriage 48 is supported by one or two jack (s) 74 secured to one another of the lance-carrying carriage 8.
  • the lance-carrying carriage 8 with lance 16 remains stationary, while the collector-carrying carriage 48 is moved under the action of the jack 74 to carry out the maneuvers of approach or clearance between the collector and the lance unlike the embodiment according to FIGS. 1 to 5 in which the lance-carrying carriage 8 is moved while the collector-carrying carriage 48 remains stationary.
  • the advantage of this variant is that the winch and the pulleys 14 do not need to be actuated when changing a lance.
  • Figure 7 shows a top view on a second embodiment.
  • the reference 8 designates a lance-carrying carriage with its rollers 12 identical to those of the first embodiment.
  • Reference 76 designates the manifold with its fittings 78.
  • the manifold 76 is no longer supported by a carriage but is directly provided with rollers 80 and guide rollers 82 moving in corresponding vertical rails 84 of the lance-carrying carriage 8 and allowing the collector 76 to slide vertically relative to the carriage 8.
  • the vertical support of the collector 76 can be produced either, like FIGS. 1 to 5, by means of the lance 16 and a cleat 62 not shown, or according to FIG. 6 using a jack not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Supports For Pipes And Cables (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (10)

  1. Vorrichtung zum automatischen Ankuppeln einer Einblaslanze an ein Sammelgefäß, das mit Rohrleitungen in Verbindung steht, die Fluids befördern, die dazu bestimmt sind, in ein schmelzflüssiges metallisches Bad injiziert zu werden, und zwar über Kanäle, die durch die Lanze (16) hindurch verlaufen, die auf einem längs einer Laufschiene vertikal verschiebbaren Lanzenwagen (8) angebracht ist, wobei das Sammelgefäß (42, 76) Mittel aufweist, um an die Verbindungsfläche (70) der Lanze (16) dicht angekuppelt zu werden, gekennzeichnet durch Mittel, um die Lanze (16) an dem Lanzenwagen (8) starr festzuhaken, und durch Mittel, die die Befestigung des Sammelgefäßes (42, 76) an dem Lanzenwagen (8) sicherstellen und eine vertikale Verschiebung des Sammelgefäßes (42, 76) bezüglich des Lanzenwagens, oder umgekehrt, ermöglichen.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß das Sammelgefäß (42) auf einem Sammelgefäß-Wagen (48) angebracht ist, der entweder über das Sammelgefäß (42) und die Lanze (16) mit dem Lanzenwagen (8) fest verbunden werden kann, oder durch die Schwerkraft bezüglich der Laufschiene dieses Lanzenwagens festgehalten werden kann.
  3. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß das Sammelgefäß (42) mittels elastischer Mittel auf dem Sammelgefäß-Wagen (48) angebracht ist.
  4. Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, daß das Sammelgefäß (42) einen peripheren Flansch (52) umfaßt, über den es zwischen mehreren Federpaaren aus vertikalen Federn (54, 56) getragen wird, die auf einer mit dem Sammelgefäß-Wagen (48) fest verbundenen Platte (60) befestigt sind.
  5. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß der Lanzenwagen (8) über Führungsrollen (50) bezüglich des SammelgefäßWagens (48) verschiebbar ist, wenn dieser Sammelgefäß-Wagen bezüglich der Laufschiene (10) festgestellt ist.
  6. Vorrichtung gemäß Anspruch 5, gekennzeichnet durch eine Sperre (62), die durch einen Hubzylinder (64) verschiebbar ist, um den Sammelgefäß-Wagen (48) bezüglich der Laufschiene (10) zu tragen.
  7. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß der Sammelgefäß-Wagen (48) von mindestens einem auf dem Lanzenwagen (8) angebrachten Hubzylinder (74) getragen wird, um den Sammelgefäß-Wagen (48) bei einem Lanzenwechsel zu verschieben.
  8. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß das Sammelgefäß (76) ohne einen dazwischen angeordneten Sammelgefäß-Wagen auf dem Lanzenwagen (8) über Rollen (80), (82) unmittelbar gleitet.
  9. Vorrichtung gemäß irgendeinem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Lanzenkörper (16) zwei Lagerzapfenpaare (26, 28) umfaßt, und daß der Lanzenwagen (8) zwei Auflagenpaare aus Auflagen (18, 20) umfaßt, von denen jede mit Einschnitten (30, 32) versehen ist, um die Lagerzapfen (26, 28) der Lanze (16) aufzunehmen und zu tragen, und daß jeder der Einschnitte (30, 32) einem Haken (34, 36) zugeordnet ist, der durch Hubzylinder (38, 40) betätigt wird, um die Lagerzapfen (26, 28) in den Einschnitten (30, 32) zu blockieren, und die Lanze (16) mit dem Lanzenwagen (8) fest zu verbinden.
  10. Vorrichtung gemäß irgendeinem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Sammelgefäß (42, 76) zwei Haken (66) umfaßt, die durch Hubzylinder (68) und exzentrische Schwingarme bezüglich der Achse der Haken schwenkbar sind, um das Sammelgefäß (42, 76) mit der Verbindungsfläche (70) der Lanze (16) fest zu verbinden.
EP91109809A 1990-07-04 1991-06-14 Vorrichtung zum automatischen Ankuppeln einer Einblaslanze an ein Sammelgefäss Expired - Lifetime EP0464427B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87761A LU87761A1 (fr) 1990-07-04 1990-07-04 Dispositif d'accouplement automatique d'une lance d'insufflation a une tete de raccord
LU87761 1990-07-04

Publications (3)

Publication Number Publication Date
EP0464427A2 EP0464427A2 (de) 1992-01-08
EP0464427A3 EP0464427A3 (en) 1992-03-18
EP0464427B1 true EP0464427B1 (de) 1995-08-16

Family

ID=19731244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109809A Expired - Lifetime EP0464427B1 (de) 1990-07-04 1991-06-14 Vorrichtung zum automatischen Ankuppeln einer Einblaslanze an ein Sammelgefäss

Country Status (20)

Country Link
US (1) US5167904A (de)
EP (1) EP0464427B1 (de)
JP (1) JPH0525530A (de)
KR (1) KR100198763B1 (de)
CN (1) CN1027455C (de)
AR (1) AR247593A1 (de)
AT (1) ATE126544T1 (de)
AU (1) AU634893B2 (de)
BR (1) BR9102890A (de)
CA (1) CA2043479A1 (de)
CZ (1) CZ282175B6 (de)
DE (1) DE69112143T2 (de)
ES (1) ES2078387T3 (de)
HU (1) HU209608B (de)
LU (1) LU87761A1 (de)
PL (1) PL168956B1 (de)
RU (1) RU2061759C1 (de)
TR (1) TR25529A (de)
UA (1) UA26906C2 (de)
ZA (1) ZA913885B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223722B4 (de) 2016-11-29 2024-04-25 Sms Group Gmbh Vorrichtung und Verfahren zur Montage und Demontage eines Lanzenkopfes

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5374296A (en) * 1991-01-24 1994-12-20 Mount Isa Mines Limited Lance carriage
LU88017A1 (de) * 1991-10-14 1993-05-17 Wurth Paul Sa Antrieb fuer automatische lanzenwechselvorrichtungen
LU88057A1 (de) * 1992-01-24 1993-08-17 Paul Wurth S.A. Blaslanzenaufhaengung mit kombinierter medienversorgung
LU88056A1 (de) * 1992-01-24 1993-08-17 Paul Wurth S.A. Vorrichtung zur medienversorgung einer blaslanze
DE19541199C2 (de) * 1995-11-04 2001-05-23 Thyssen Stahl Ag Wechselvorrichtung für eine Blaslanze
LU88808A1 (fr) * 1996-08-28 1998-03-02 Wurth Paul Sa Dispositif d'accouplement d'une lance de soufflage à un collecteur
TWI373529B (en) * 2004-07-27 2012-10-01 Tech Resources Pty Ltd Smelting apparatus
EP1875147B1 (de) * 2005-03-02 2010-05-05 Technological Resources Pty. Ltd. Lanzenextraktion
DE102011014323A1 (de) * 2010-12-28 2012-06-28 Beda Oxygentechnik Armaturen Gmbh Mehrfach gesicherte Koppelvorrichtung für Sauerstofflanzen
EP2482019B1 (de) * 2011-01-31 2014-10-01 Siemens VAI Metals Technologies GmbH Brennlanzenhalter zum Haltern einer Brennlanze durch eine Handhabungseinrichtung
DE102012016045B3 (de) * 2012-08-08 2013-10-24 Saarstahl Ag Verfahren zum Betrieb einer Aufblaslanzenanordnung, sowie Aufblaslanzenanordnung selbst
LU100373B1 (en) * 2017-08-18 2019-03-26 Wurth Paul Sa Extraction Device for a Tuyere Part

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US2886308A (en) * 1957-04-15 1959-05-12 A J Boynton & Co Lance handling apparatus
US3025047A (en) * 1960-10-11 1962-03-13 Koppers Co Inc Apparatus for the restraint and control of oxygen lances
US3170977A (en) * 1961-11-16 1965-02-23 Koppers Co Inc Oxygen lance with detachable barrel
AT270713B (de) * 1966-06-22 1969-05-12 Voest Ag Blaseinrichtung für eine Konverteranlage und eine solche enthaltende Konverteranlage
LU86985A1 (de) * 1987-09-07 1989-04-06 Wurth Paul Sa Automatische lanzenwechselvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223722B4 (de) 2016-11-29 2024-04-25 Sms Group Gmbh Vorrichtung und Verfahren zur Montage und Demontage eines Lanzenkopfes

Also Published As

Publication number Publication date
CN1027455C (zh) 1995-01-18
DE69112143T2 (de) 1996-03-14
EP0464427A3 (en) 1992-03-18
PL290940A1 (en) 1992-06-26
LU87761A1 (fr) 1992-03-11
TR25529A (tr) 1993-05-01
KR920002802A (ko) 1992-02-28
RU2061759C1 (ru) 1996-06-10
AU634893B2 (en) 1993-03-04
CA2043479A1 (en) 1992-01-05
KR100198763B1 (ko) 1999-06-15
ZA913885B (en) 1992-02-26
AR247593A1 (es) 1995-01-31
JPH0525530A (ja) 1993-02-02
US5167904A (en) 1992-12-01
UA26906C2 (uk) 1999-12-29
CN1057863A (zh) 1992-01-15
EP0464427A2 (de) 1992-01-08
CZ282175B6 (cs) 1997-05-14
DE69112143D1 (de) 1995-09-21
BR9102890A (pt) 1992-02-11
HU912161D0 (en) 1991-12-30
HUT58827A (en) 1992-03-30
HU209608B (en) 1994-09-28
ATE126544T1 (de) 1995-09-15
PL168956B1 (pl) 1996-05-31
ES2078387T3 (es) 1995-12-16
AU7938791A (en) 1992-01-09
CS205191A3 (en) 1992-03-18

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