US3358982A - Blowing device for carrying out top blowing processes - Google Patents

Blowing device for carrying out top blowing processes Download PDF

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Publication number
US3358982A
US3358982A US385714A US38571464A US3358982A US 3358982 A US3358982 A US 3358982A US 385714 A US385714 A US 385714A US 38571464 A US38571464 A US 38571464A US 3358982 A US3358982 A US 3358982A
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US
United States
Prior art keywords
lance
tube
blowing
carrying
crucible
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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
US385714A
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English (en)
Inventor
Penn Franz
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.)
Voestalpine AG
Voest AG
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Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
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Publication of US3358982A publication Critical patent/US3358982A/en
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    • 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
    • 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 invention relates to a blowing device for use in top blowing oxygen steel equipment which includes a frame mounted for pivoting or swinging movement in a circular path above a steel-making converter, the frame carrying an outer tube having a telescopically related tube therein which can be extended and retracted and through which an air blast can be directed into the converter, and two lance guides mounted on opposite sides of the outer tube to enable oxygen-blowing lances mounted on the guides to be projected selectively into and withdrawn from the mouth of the steel-making converter, one of the lances being disposed outside of the converter in a neutral position while the other lance is in use.
  • This invention relates to a blowing device for carrying out top blowing processes, wherein the blowing agent, particularly oxygen, is blown from above onto the surface of the charge in a crucible-type refining vessel.
  • the blowing agent particularly oxygen
  • the exchange of the lances e.g the substitution of an oxygen lance for a heating lance or a lime-dust supply lance, or vice versa, can be accomplished as quickly as possible and without assembling expenditure.
  • it is required for safety reasons that a lance which is in operation can be replaced within a minimum of time by a fully connected reserve lance, without having to interrupt the refining process.
  • a further problem in the operation of top-blowing crucibles which has not been solved satisfactorily up to now, resides in that due to the constructions above the crucible mouth the space available is very restricted. Difficulties are always encountered, for instance, in accommodating at the end of a crucible campaign the cooling tube from which cooling air is blown into the interior of the crucible in order to cool the lining.
  • the present invention avoids the previous difiiculties and solves the existing problem.
  • the blowing device according to the invention having a frame-like lance carrier which is slewable along a circular path, is characterized in that the lance carrier comprises two lance guides connected by a tubular reinforcing member and arranged with such a distance on a circular are that one lance is in the operating position and the other lance is in the reserve (neutral) position.
  • a tubular extension piece is provided to be telescopically drawn out of the reinforcing tube, the tube being adapted to be connected to a coolant supply, e.g. an air blast.
  • a stop is provided for preventing a lifting or lowering of the lance when pivoting the lance carrier.
  • FIG. 1 is a lateral view of the device
  • FIG. 2 is a sectional view along line A-A of FIG. 1
  • FIG. 3 is a partial sectional view along line B-B of FIG. 2.
  • the lance carrier consists of an upper cantilever arm 1, a vertical lance guiding part 2 and a lower cantilever arm 3, which form together an angular frame.
  • the cantilever arm 1 is carried in the neck bearing 4, and the lower cantilever arm 3 is pivotally carried in the footstep bearing 5, so that the lance guiding part 2 is slewable along a circular path.
  • the lance guiding part consists of three portions, viz. lance guide 6, lance guide 7 and the interposed reinforcing tube 8 which is rigidly connected to the two lance guides.
  • a lance 9 and 10 On each of the lance guides 6, 7 a lance 9 and 10, respectively, is mounted and guided to be vertically displaceable, lances 9 and 10 being arranged on the circular arc with such a distance that one lance is in the operative (working) position in the longi tudinal axis of the crucible and the other is in the reserve (neutral) position outside the crucible.
  • the centers of the two lances 9 and 10 must be situated on the common are, the radius of which is determined by the length of the cantilever arms.
  • the reinforcing tube 8 which is arranged between the two lance guides is intended to increase the rigidity of the lance guiding part 2.
  • the center of the tube may likewise lie on the circular arc determined by the radius of the cantilever arms, together with the lances; however, this is not essential.
  • the reinforcing tube 8 may also be a little offset in the direction of the axis of rotation.
  • the lance 9 is in the blowing position in the center of the crucible M.
  • the other lance 10 or the tube 8 may selectively be positioned above the crucible center M by altering the slewing angle.
  • a tubular extension piece 11 is concentrically arranged in the tube 8 and adapted to be telescopically moved in and out by means of a rope hoist 12.
  • the inner tube 11 is sealed against the outer tube 8 by a packing 13 which is pressed by the proper weight of the tube 11 against the annular flange 14.
  • Flange 14 simultaneously serves as the lower stop of the tube 11.
  • the cooling tube is combined with the lance guides and the lances to form a functional unit.
  • the tube serves as a structural reinforcing element, and at the end of a crucible campaign as part of the cooling equipment.
  • a useful design of the invention is indicated by the return pulleys 16, 17, 18.
  • the latter serve to prevent a vert1ca1 displacement of the lances during the slewing proce- 3 dure.
  • Slewing of the lance carrier maybe effected by any suitable auxiliary device.
  • an electric shifting motor which is designated by numeral 19 is provided for this purpose.
  • a blowing, device for carrying out top blowing processes comprising a frame having a first substantially vertical tube and laterally extending arms adjacent to opposite ends of said tube, means pivotally supporting said tube for slewing of said frame in a circular path above a steelmaking converter having a mouth at its top, two lance guides mounted on opposite sides of said tube, two lances slidably mounted in said lance guides for vertical movement, said lance guides being spaced apart a distance such that when one lance is aligned with the axis of the converter the other lance is disposed outside of said converter, a second vertical tube arranged coaxially within said first tube and telescopically displaceable relative to said first tube, a hoist for displacing said second tube in said first tube, annular sealing members sealing said second tube to said first tube, and means for connecting said first tube to an air blast source.

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  • 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 Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Details (AREA)
US385714A 1963-08-26 1964-07-28 Blowing device for carrying out top blowing processes Expired - Lifetime US3358982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT685063A AT245598B (de) 1963-08-26 1963-08-26 Blaseinrichtung zur Durchführung von Aufblaseverfahren

Publications (1)

Publication Number Publication Date
US3358982A true US3358982A (en) 1967-12-19

Family

ID=3590398

Family Applications (1)

Application Number Title Priority Date Filing Date
US385714A Expired - Lifetime US3358982A (en) 1963-08-26 1964-07-28 Blowing device for carrying out top blowing processes

Country Status (7)

Country Link
US (1) US3358982A (de)
AT (1) AT245598B (de)
BE (1) BE651426A (de)
DE (1) DE1433669A1 (de)
ES (1) ES303358A1 (de)
GB (1) GB1014709A (de)
LU (1) LU46617A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439912A (en) * 1965-10-04 1969-04-22 Maerz Ofenbau Frame for injectors in melting furnaces
US4653730A (en) * 1984-11-27 1987-03-31 Empco (Canada) Ltd. Multi-purpose pyrometallurgical process enhancing device
LU91108B1 (en) * 2004-10-04 2006-04-05 Wurth Paul Sa System and method for injecting gas-powder mixtureinto slag
CN109513554A (zh) * 2019-01-28 2019-03-26 余姚市超成机械制造有限公司 一种筒体内部静电喷塑设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT270713B (de) * 1966-06-22 1969-05-12 Voest Ag Blaseinrichtung für eine Konverteranlage und eine solche enthaltende Konverteranlage
AT357579B (de) * 1976-09-30 1980-07-25 Voest Alpine Ag Anlage zum frischen von fluessigem roheisen mit einem konverter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE572731A (de) *
US3007691A (en) * 1958-05-30 1961-11-07 Voest Ag Blowing device for refining crude iron
AT222677B (de) * 1960-10-03 1962-08-10 Voest Ag Verfahren und Vorrichtung zum Absteifen von Schlacke beim Betrieb von kippbaren Frischgefäßen
US3170977A (en) * 1961-11-16 1965-02-23 Koppers Co Inc Oxygen lance with detachable barrel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE572731A (de) *
US3007691A (en) * 1958-05-30 1961-11-07 Voest Ag Blowing device for refining crude iron
AT222677B (de) * 1960-10-03 1962-08-10 Voest Ag Verfahren und Vorrichtung zum Absteifen von Schlacke beim Betrieb von kippbaren Frischgefäßen
US3170977A (en) * 1961-11-16 1965-02-23 Koppers Co Inc Oxygen lance with detachable barrel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439912A (en) * 1965-10-04 1969-04-22 Maerz Ofenbau Frame for injectors in melting furnaces
US4653730A (en) * 1984-11-27 1987-03-31 Empco (Canada) Ltd. Multi-purpose pyrometallurgical process enhancing device
LU91108B1 (en) * 2004-10-04 2006-04-05 Wurth Paul Sa System and method for injecting gas-powder mixtureinto slag
CN109513554A (zh) * 2019-01-28 2019-03-26 余姚市超成机械制造有限公司 一种筒体内部静电喷塑设备
CN109513554B (zh) * 2019-01-28 2024-05-07 余姚市超成机械制造有限公司 一种筒体内部静电喷塑设备

Also Published As

Publication number Publication date
BE651426A (de) 1964-12-01
GB1014709A (en) 1965-12-31
ES303358A1 (es) 1964-11-01
AT245598B (de) 1966-03-10
LU46617A1 (de) 1964-09-24
DE1433669A1 (de) 1968-11-28

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