EP0592792A1 - Porte-tuyère pour paroi d'un haut fourneau - Google Patents

Porte-tuyère pour paroi d'un haut fourneau Download PDF

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Publication number
EP0592792A1
EP0592792A1 EP93113448A EP93113448A EP0592792A1 EP 0592792 A1 EP0592792 A1 EP 0592792A1 EP 93113448 A EP93113448 A EP 93113448A EP 93113448 A EP93113448 A EP 93113448A EP 0592792 A1 EP0592792 A1 EP 0592792A1
Authority
EP
European Patent Office
Prior art keywords
armor
windform
wind
tuyere
casing
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Withdrawn
Application number
EP93113448A
Other languages
German (de)
English (en)
Inventor
Bruno Dipl.-Ing. Kämmerling
Werner Dipl.-Ing. Rosker
Siegmund Maluszek
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.)
MAN GHH Immobilien GmbH
Original Assignee
MAN Gutehoffnungshutte GmbH
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 MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0592792A1 publication Critical patent/EP0592792A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/16—Arrangements of tuyeres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres

Definitions

  • the invention relates to a multi-part, cylindrical or frustoconical wind form armor between the frame and locking armor of a shaft furnace, in particular a blast furnace, for receiving the wind forms for the hot wind blowing.
  • the cooling ring of a wind mold is inserted gas-tight in a wind mold holding frame.
  • These windform holder frames are individually welded into openings in the windform armor.
  • the required minimum size of the shaft mold frame for the shaft furnace determines the maximum number of wind molds that can be accommodated on the circumference and sets natural limits for a further specific increase in performance, especially for large blast furnaces.
  • the compressed hot wind is blown into the interior of the blast furnace at high speed and should reach the center of the furnace as far as possible in order to ensure optimum gas flow through the column of furniture.
  • wind mold holding frame because of the required tolerances, can only be inserted and welded into the assembled wind mold armor after extensive measurement.
  • Another disadvantage is that the windform holder frame cannot be inserted into the windform armor in abutment, but at predetermined intervals, ie, for strength reasons, a minimum amount of windform armor must remain between the individual windform armor frames.
  • the number of nozzle assemblies to be arranged on the circumference of the shaft furnace is limited by the dimensions of the windform holding frame and the diameter of the shaft furnace in the region of the windform armor.
  • a nozzle assembly for blast furnace hot wind nozzles which is equipped with a resilient pressing device for the blowing nozzle.
  • the nozzle assembly has at least two compression springs, which are arranged symmetrically to the axis of the blowing nozzle and act on radially projecting parts of the nozzle assembly end adjacent to the blowing nozzle and which are supported against adjusting nuts by retaining screws articulated on the furnace wall.
  • a nozzle assembly in particular for a blast furnace, with a nozzle tip connected to a hot wind ring line is described in AT-PS 373 283.
  • the nozzle tip opens into a full-walled wind form made of ceramic sintered mass.
  • a cooled wind form box which delimits a cavity in the brick lining of the blast furnace is inserted into the brick lining of the furnace.
  • the wind form is movably mounted with respect to the nozzle tip with the aid of a ball joint and is movable with respect to the wind form box by means of a further tight joint connection.
  • the object of the invention is to accommodate the largest possible number of wind forms on the circumference of the wind form armor and thereby to make the cooling rings, which are arranged on the circumference of the wind form openings, so large that injection lances for additional fuels can be introduced without difficulty.
  • annular windform armor With the help of curved (rolled) windform armor segment sheets, an annular windform armor can be formed. With the help of flat windform armor segment sheets, a polygonal windform armor can be formed.
  • the curved or flat segment sheets are welded together to form a closed windform armor.
  • the welding can be dispensed with if several windform openings are incorporated into a flat, correspondingly elongated segment sheet and this segment sheet is bent between two blow molds. In this way, a polygonal windform armor can also be created.
  • This embodiment according to the invention offers the advantage over the designs according to the prior art that the number of windforms on the circumference of the windform armor increases and that, with the aid of modern machine technology and production methods, all of them Seating areas for the wind forms can already be machined in the workshop.
  • the greater wall thickness of the windform armor sheets according to the invention places no special demands on today's workshop production.
  • the otherwise necessary reinforcing collar for the wind form openings can be dispensed with.
  • Windform brackets (12) are welded into the windform armor (1), into which the cooling ring (13) for receiving the windform (15), to which a blowing lance (16) is let in, is fitted gas-tight through the windform cutout (6).
  • the nozzle block tip (14) is connected to the nozzle block (not shown) with compensator, which is connected to the hot wind pipe.
  • windform mounting frame (12) is also welded to the windform armor (1) on the bottom Frame armor (8) sits. Wind mold (1) and frame armor (8) are cooled in this area by double jacket cooling (17).
  • FIG. 2 represents a segmental cutout of the entire annular windform armor (1).
  • the windform armor (1) which consists of curved segment sheets (2) and serves to receive the cooling ring (13) and the windform (15) with a welded-in blowing lance (16).
  • the wind form armor (1) has an approximately two to three times the wall thickness compared to the prior art. It is welded to the frame (8) at the bottom and to the locking armor (9) at the top.
  • the seating area of the cooling ring (13) in the wind form opening (6) is designed in the workshop in such a way that a gas-tight connection is established after the cooling ring (13) has been introduced.
  • Fig. 4 shows an arcuate section of the annular windform armor (4), which consists of curved windform armor segment sheets (2), in which the windform section (6) is incorporated.
  • 5-6 shows a further, alternative solution for the execution of the windform armor (1).
  • the polygonal windform armor (5) consists of individual flat windform armor segment sheets (3) of the same type Wall thickness, which are welded to each other via a butt seam (5a).
  • the wind mold (15) with its cooling ring (13) is fitted directly into the wind mold cutout (6) and forms a gas-tight connection.
  • Fig. 7 shows the windform armor (1) according to the invention, which is made of curved or flat segment sheets, with a cooling channel (7) incorporated circularly into the windform armor around each windform opening (6) with connections to the water cooling circuit of the blast furnace, not shown here.

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)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP93113448A 1992-10-16 1993-08-24 Porte-tuyère pour paroi d'un haut fourneau Withdrawn EP0592792A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924234936 DE4234936C1 (de) 1992-10-16 1992-10-16 Windformhalterung im Schachtofenpanzer
DE4234936 1992-10-16

Publications (1)

Publication Number Publication Date
EP0592792A1 true EP0592792A1 (fr) 1994-04-20

Family

ID=6470641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113448A Withdrawn EP0592792A1 (fr) 1992-10-16 1993-08-24 Porte-tuyère pour paroi d'un haut fourneau

Country Status (2)

Country Link
EP (1) EP0592792A1 (fr)
DE (1) DE4234936C1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE607369C (de) * 1932-03-30 1934-12-22 Hans Rolfs Dueseneinsatzkoerper zur Einfuehrung erhitzter Oberluft in Kupol- und Hochoefen
GB899445A (en) * 1959-09-22 1962-06-20 United States Steel Corp Assembly for insertion in a blast furnace wall
GB1513274A (en) * 1975-09-30 1978-06-07 Sumitomo Metal Ind Tuyeres
EP0451052A1 (fr) * 1990-04-06 1991-10-09 Savoie Refractaires Perfectionnements à la réalisation des ouvreaux de brûleurs ou entourage de tuyères de fours et de réacteurs verticaux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480506A (en) * 1964-08-20 1969-11-25 Dow Chemical Co Wood laminated with a modified ethylene polymer and a polyalkylene imine
AT373283B (de) * 1982-04-05 1984-01-10 Voest Alpine Ag Duesenstock fuer einen schachtofen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE607369C (de) * 1932-03-30 1934-12-22 Hans Rolfs Dueseneinsatzkoerper zur Einfuehrung erhitzter Oberluft in Kupol- und Hochoefen
GB899445A (en) * 1959-09-22 1962-06-20 United States Steel Corp Assembly for insertion in a blast furnace wall
GB1513274A (en) * 1975-09-30 1978-06-07 Sumitomo Metal Ind Tuyeres
EP0451052A1 (fr) * 1990-04-06 1991-10-09 Savoie Refractaires Perfectionnements à la réalisation des ouvreaux de brûleurs ou entourage de tuyères de fours et de réacteurs verticaux

Also Published As

Publication number Publication date
DE4234936C1 (de) 1993-10-28

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): AT DE FR GB IT NL

17P Request for examination filed

Effective date: 19940322

17Q First examination report despatched

Effective date: 19961210

18W Application withdrawn

Withdrawal date: 19970405