US3439912A - Frame for injectors in melting furnaces - Google Patents

Frame for injectors in melting furnaces Download PDF

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Publication number
US3439912A
US3439912A US580700A US3439912DA US3439912A US 3439912 A US3439912 A US 3439912A US 580700 A US580700 A US 580700A US 3439912D A US3439912D A US 3439912DA US 3439912 A US3439912 A US 3439912A
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US
United States
Prior art keywords
injectors
injector
furnace
frame
carrying frame
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
US580700A
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English (en)
Inventor
Norbert Berger
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.)
Maerz Ofenbau AG
Original Assignee
Maerz Ofenbau AG
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 Maerz Ofenbau AG filed Critical Maerz Ofenbau AG
Application granted granted Critical
Publication of US3439912A publication Critical patent/US3439912A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • 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
    • 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
    • F27B3/20—Arrangements of heating devices
    • 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
    • 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

Definitions

  • injectors are mounted in parallel relation on the frame and the frame is translated to register the selected injector with the furnace opening.
  • Tilting mechanism is provided to incline the selected injector to an angle between 0 and 90 to the horizontal so that the angle may be adjusted.
  • An automatic controller is provided to interconnect the mechanisms which translate the frame, tilt the injector, project the injector, and control the operation of the injectors respectively.
  • This invention relates to a carrying frame for burners and/or lances for use in the operation of melting furnaces.
  • the fuel is supplied in :most cases by water-cooled oil or gas burners or similar heat injectors.
  • Such furnaces may also be used for carrying out exothermic reactions. In this case, there is no need to heat the furnace with fuels supplied from the outside as long as the heat generated by the exothermic reaction is available.
  • Such anoperation may be carried out, e.g., in the open-hearth furnace, in which the solid charge is initially transformed into a molten state with oil or gas flames and the bath is then refined with the aid of oxygen supplied by lances or similar gas injectors.
  • the quantity of heat which is generated in the furnace is sufficient to eliminate the need for firing the furnace with oil or gas.
  • only one type of injector is in operation, i.e., only the burner or only the oxygen lance is in operation.
  • the burners and oxygen lances which protrude into the furnace must be water-cooled and for this reason consume heat.
  • injectors burners and/or lances
  • a carrying frame for injectors for use in the operation of a melting furnace
  • which carrying frame is characterized in that it comprises a plurality of mountings for a plurality of injectors, which mountings are slidable in an axial direction on or in guides, which are parallel to each other and mounted on the carrying frame.
  • the frame is adjustable to a plurality of predetermined positions, and each of the injectors is aligned when the frame is in a selected one of said positions with the same lead-in opening in the furnace wall.
  • the guides may be mounted on this carrying frame in such a manner that the axes of the injectors (burners and/or lances) lie on generatrices of a cylindrical surface.
  • the carrying frame is mounted for rotation about an axis which coincides with the axis of the cylindrical surface, and the carrying frame may be rotatable about this axis without limits or through a limited angle, depending on the number of injectors which are carried by the frame. By such rotation of the carrying frame, each injector can be aligned with the lead-in opening in the furnace and moved into the furnace.
  • the guides for the injectors are arranged on the carrying frame in such a manner that the axes of all injectors carried by the carrying frame lie in a common plane.
  • the carrying frame in this embodiment is displaceable transversely to the shifting direction of the injectors along a straight line which is parallel to the plane which extends through the axes of all injectors.
  • the axes of the injectors may lie in an inclined plane and the carrying frame may he slidable in a horizontal direction, e.g., on horizontal guide rails.
  • the carrying frame is raised and lowered, e.g., by a hydraulic jack, for aligning the individual injectors with the lead-in opening of the furnace.
  • the axes of the injectors may lie in a plane which is at an oblique angle in a direction that is transverse to their direction of movement.
  • the injectors burners and/or lances
  • the invention proposes two special embodiments of the carrying frame which enable optimum results to be achieved in the case of changing requirements.
  • the carrying frame is pivotally movable relative to the horizontal through any desired angle from 0 to about a horizontal tilting axis which is transverse to the axes of the injectors, in all positions to which the carrying frame can be pivotally or slidably moved.
  • each of the guides for the mountings of the injectors is pivotally movable relative to the horizontal through any desired angle between 0 and 90 about a horizontal pivot, which is carried by the carrying frame and extends transversely to the axis of the injectors. In this way, the injectors can be moved into the position from which they may be extended into the furnace.
  • each of the guides for the mountings of the injectors may have a separate drive, or a common drive may be provided for all guides and be selectively coupled to the guide mounting which has been moved into the working plane.
  • FIGS. 1 and 2 are, respectively, a front elevation and an axial longitudinal sectional view showing a carrying frame in accordance with the invention, which is pivot-ally movable about an axis of rotation;
  • FIG. 3 shows another carrying frame in accordance with the invention having injector guides which lie horizontally one beside the other;
  • FIGS. 4 and 5 are respectively, a front elevation and an axial longitudinal sectional view showing another carrying frame in accordance with the invention having injector guides disposed in an inclined plane;
  • FIG. 6 shows still another carrying frame in accordance with the invention having injector guides which lie vertically one above the other;
  • FIG. 7 shows yet another carrying frame in accordance with the invention which is rotatable about an axis and has injector guides spaced around the entire periphery of the frame;
  • FIG. 8 is a block diagram showing preferred controls for the frame of the present invention.
  • the carrying frame shown in FIGS. 1 and 2 has three guides 1, which extend parallel to each other and are disposed on generatrices of a surface of a segment of a cylinder and contain mountings 2 for injectors 3 (either burners or lances). Close to their ends, the guides are mounted on posts 4, which are pivotally movable about an axis 6 by means of a drive 5, which may be a hydraulic drive. In this way, any one injector 3 can be moved into the working plane, e.g., the vertical center plane, in which the guide is aligned with the lead-in opening for the injector in the furnace.
  • the structure which carries the pivot 6 of the carrying frame may be tilted about a transverse axis 9 by means of a drive mechanism 8.
  • the mountings 2 for the injectors 3 are provided with rollers 10, which are movable in the guides 1. For a movement of an injector into or out of the furnace, these mountings can be axially displaced by a motor 12, tag, with the aid of chains 11.
  • the injectors 3 are connected respectively to a source of cooling water, fuel, oxygen and/or other fluid media by conduits 14 having control valves 15 therein which are controlled by valve operators 16.
  • the injectors are not necessarily the same length and the same diameter. For example, as shown at 3a, the injector is of smaller diameter, and the mounting 2a is modified to accommodate this injector.
  • the motor for axially displacing the injector 3a may be operated differently to accommodate a different length.
  • the frame comprises three guides 31, each supporting a mounting 32 for a suitable injector 33 by rollers 40.
  • all guides 31 are mounted on a common plate 37, which can be inclined about a tilting axis (not shown) corresponding to the transverse axis 9 in FIG. 1 or 2. This arrangement enables a tilting of the burners or lances into their operative position.
  • the frame may be moved by drive wheels 35 to selectively position each injector in registry with the lead-in opening in the furnace.
  • FIG. 4 shows a different arrangement in a frame wherein guides 41 support mountings 42 for injectors 43, as set forth above.
  • each guide 41 is mounted on a separate plate 47, which is connected by a hinge 49 to the forward supporting wall 50 of the carrying frame so that each guide can be individually tilted to any desired extent by raising the rear end of the associated plate, for example by a common lifting gear 48 in registry with the lead-in opening and engageable, upon extension, with the plate 47.
  • the frame is displaced by drive wheels 45 when the tilting mechanism is retracted to register the selected injector 43 with the lead-in opening of the furnace, and the tilting mechanism.
  • guides 51 are disposed one over the other to dispose injectors 53 in a vertical plane.
  • the guides are mounted in a framework 57 which can be adjusted by lifting and lowering as indicated by the arrow 55 so as to align any selected injector 53 with the lead-in opening of the furnace.
  • guides '61 are on the generatrices of a cylindrical surface, evenly spaced about the entire periphery of a cylindrical framework 67 which is rotatable about its axis 66 as indicated by the arrow 65 to dispose any selected injector 63 in registry with the lead-in opening of the furnace.
  • Pneumatic, hydraulic or electric drive means may be provided for rotating or displacing and tilting the carrying frame or the individual guides for the mountings of the injectors and for axially moving the injectors into and out of the furnace. As indicated in FIG.
  • the various drives are preferably interconnected by a controller, the drive means for displacing the carrying frame being operable only when the injectors have been retracted from the lead-in opening of the furnace; the motor for displacing the selected injector axially being operable only when the axis of the injector has been properly aligned by the frame drive and tilted by the tilting drive; and the tilting mechanism being operable only when the injector is retracted from the furnace.
  • each guide has associated with it a displacing motor or other drive means for displacing the injectors axially into and out of the furnace, the motors being interlocked whereby only the one displacing drive means is operable which is associated with the guide of the selected injector which is aligned with the lead-in opening of the furnace and also is operable only when the injector has been tilted to the proper inclination.
  • all guides may have associated with them a common displacing drive motor for displacing the injectors axially into and out of the furnace, only the one mounting of the selected injector being adapted to be coupled to said displacing drive motor or other drive means which preferably is disposed above and aligned with the lead-in opening of the furnace, whereas the mountings of all other injectors are locked against displacement on stops which are non-movable relative to the displacing motor means.
  • the valves in the fluid supply conduits for the advancing injector are operated to supply cooling water, fuel, oxygen, and/or other fluid media to the injector.
  • each guide for the mountings of the injectors may have associated with it a separate lifting gear for tilting the guides relative to the carrying frame, preferably operable only when its associated guide is in registry with the lead-in opening and its injector is Withdrawn from the furnace.
  • a carrying frame for injectors for use in a specified inclined working position at an angle of between 0 and 90 to the horizontal in association with a melting furnace, all of said injectors have permanently connected supply conduits and means for separately controlling the same, comprising a plurality of guides, a mounting for an injector in each guide, said mounting being displaceable in said guides axially of said injectors, said guides being disposed parallel to each other on the carrying frame, means to drive said frame to a plurality of predetermined positions, in each of which an injector is aligned with said working position, means mounting said aligned injector for pivotal movement to said inclined working position, and tilting drive means to vary said angular position.
  • a carrying frame according to claim 1 characterized in that the axes of the injectors lie on generatrices of a cylindrical surface, and the carrying frame is mounted for rotation about the axis of this cylindrical surface to enable any selected one of the injectors to be aligned with said working position.
  • a carrying frame according to claim 1 characterized in that the axes of all injectors lie in a plane, and the carrying frame is displaceable along a straight line which is transverse to the direction of the axial displacement of the injectors and parallel to said plane to enable a movement of any selected one injector into a position in which it is aligned with said working position.
  • a carrying frame according to claim 1 characterized in that said mountings are different to accommodate injectors which have different lengths and/or different diameters.
  • A' carrying frame characterized in that the supply conduit control means comprise valves-and a controller connecting said valves and said frame *drive means to open a valve automatically upon advance of the associated injector axially in said working position.
  • a carrying frame according to claim 1 including motor means for axially displacing the injectors, and control; means interconnecting said frame drive means, said tilting .drive means and said motor means for operating said drive means for said frame only when the injectors have been retracted from the furnace, and operating said drive means for axially displacing the aligned injector only when the axis of a selected injector is in said specified inclined working position.
  • each guide has associated with it a motor means for axially displacing the associated injector, said control means being connected to all of said motor means and adapted to or erate only the one motor means associated with the selected injector which is in said specified inclined Working position.

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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)
  • Gasification And Melting Of Waste (AREA)
US580700A 1965-10-04 1966-09-20 Frame for injectors in melting furnaces Expired - Lifetime US3439912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT896655A AT269927B (de) 1965-10-04 1965-10-04 Traggerüst für Brenner und bzw. oder Lanzen zum Betrieb von Schmelzöfen, insbesondere Herdschmelzöfen

Publications (1)

Publication Number Publication Date
US3439912A true US3439912A (en) 1969-04-22

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ID=3610048

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US580700A Expired - Lifetime US3439912A (en) 1965-10-04 1966-09-20 Frame for injectors in melting furnaces

Country Status (7)

Country Link
US (1) US3439912A (ru)
AT (1) AT269927B (ru)
BE (1) BE686223A (ru)
DE (1) DE1508500A1 (ru)
ES (1) ES331844A1 (ru)
GB (1) GB1117548A (ru)
SE (1) SE301820B (ru)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632100A (en) * 1969-06-06 1972-01-04 Dango & Dienenthal Kg Device for driving a sampling or sensing lance for a shaft furnace
US3742763A (en) * 1971-07-22 1973-07-03 Pennsylvania Engineering Corp Thermocouple lance handling device
US4058258A (en) * 1974-07-29 1977-11-15 Rosen Paul W Interior pipe coating apparatus
US4128207A (en) * 1976-09-29 1978-12-05 Amos Pacht Fluid delivery system
US4431170A (en) * 1981-10-26 1984-02-14 Huemmler Otto Device for the manipulation of immersion lances for metallurgical furnaces
WO1986002437A1 (en) * 1984-10-10 1986-04-24 SSAB SVENSKT STA^oL AB Manipulator at furnaces and the like
US20090065984A1 (en) * 2004-07-27 2009-03-12 Technological Resources Pty Limited Smelting apparatus
US20100248169A1 (en) * 2009-03-31 2010-09-30 Morgan Edward R Adjustable Burners for Heaters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541621A (en) * 1924-04-23 1925-06-09 Arthur Vannucci Spraying mechanism for coke ovens
GB866176A (en) * 1958-09-26 1961-04-26 Gutehoffnungshuette Sterkrade Improvements relating to metallurgical plant including rotary furnaces
US3170977A (en) * 1961-11-16 1965-02-23 Koppers Co Inc Oxygen lance with detachable barrel
US3358982A (en) * 1963-08-26 1967-12-19 Voest Ag Blowing device for carrying out top blowing processes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541621A (en) * 1924-04-23 1925-06-09 Arthur Vannucci Spraying mechanism for coke ovens
GB866176A (en) * 1958-09-26 1961-04-26 Gutehoffnungshuette Sterkrade Improvements relating to metallurgical plant including rotary furnaces
US3170977A (en) * 1961-11-16 1965-02-23 Koppers Co Inc Oxygen lance with detachable barrel
US3358982A (en) * 1963-08-26 1967-12-19 Voest Ag Blowing device for carrying out top blowing processes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632100A (en) * 1969-06-06 1972-01-04 Dango & Dienenthal Kg Device for driving a sampling or sensing lance for a shaft furnace
US3742763A (en) * 1971-07-22 1973-07-03 Pennsylvania Engineering Corp Thermocouple lance handling device
US4058258A (en) * 1974-07-29 1977-11-15 Rosen Paul W Interior pipe coating apparatus
US4128207A (en) * 1976-09-29 1978-12-05 Amos Pacht Fluid delivery system
US4431170A (en) * 1981-10-26 1984-02-14 Huemmler Otto Device for the manipulation of immersion lances for metallurgical furnaces
WO1986002437A1 (en) * 1984-10-10 1986-04-24 SSAB SVENSKT STA^oL AB Manipulator at furnaces and the like
US4747582A (en) * 1984-10-10 1988-05-31 Bergstroem Sven E Manipulator at furnaces
US20090065984A1 (en) * 2004-07-27 2009-03-12 Technological Resources Pty Limited Smelting apparatus
US8211357B2 (en) * 2004-07-27 2012-07-03 Technological Resources Pty. Limited Smelting apparatus
US20100248169A1 (en) * 2009-03-31 2010-09-30 Morgan Edward R Adjustable Burners for Heaters
US8197250B2 (en) * 2009-03-31 2012-06-12 Uop Llc Adjustable burners for heaters

Also Published As

Publication number Publication date
BE686223A (ru) 1967-02-01
AT269927B (de) 1969-04-10
DE1508500A1 (de) 1969-10-30
GB1117548A (en) 1968-06-19
SE301820B (ru) 1968-06-24
ES331844A1 (es) 1967-10-01

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