EP0232244B1 - Spüleinrichtung für ein metallurgisches gefäss - Google Patents

Spüleinrichtung für ein metallurgisches gefäss Download PDF

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Publication number
EP0232244B1
EP0232244B1 EP87890013A EP87890013A EP0232244B1 EP 0232244 B1 EP0232244 B1 EP 0232244B1 EP 87890013 A EP87890013 A EP 87890013A EP 87890013 A EP87890013 A EP 87890013A EP 0232244 B1 EP0232244 B1 EP 0232244B1
Authority
EP
European Patent Office
Prior art keywords
lining
supply pipe
pipes
distributing pipes
pipe
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
EP87890013A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0232244A3 (en
EP0232244A2 (de
Inventor
Industrieanlagenbau Gesellschaft M B.H. Voest-Alpine
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau 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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0232244A2 publication Critical patent/EP0232244A2/de
Publication of EP0232244A3 publication Critical patent/EP0232244A3/de
Application granted granted Critical
Publication of EP0232244B1 publication Critical patent/EP0232244B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • C21C5/35—Blowing from above and through the bath

Definitions

  • the invention relates to a flushing device for a metallurgical vessel with a metal outer jacket, a bottom lined with a permanent lining, on which lined up refractory stones are applied as wear lining, and with pipes inserted at predetermined locations in recesses in the stones and having a flat cross section and flowed through with flushing gas .
  • a stirring effect can be achieved in the molten metal, which compensates for imbalances in composition and temperature, causes the separation of non-metallic inclusions and promotes a certain degassing of the molten metal.
  • the sheet metal jacket is open towards the converter interior; at the opposite end of the sink, at which the sheet metal jacket is closed, a feed line is connected to the sheet metal jacket in a gas-tight manner.
  • Flushing stones of this type have the disadvantage that they are complicated to manufacture and install, and that an uncontrolled gas passage can occur between the sheet metal casing and the porous, refractory mass contained therein if the refractory mass is not completely in contact with the sheet metal jacket.
  • a sink has wear that is premature compared to the wear lining of the converter, so that material and time-consuming repair measures are required between two new feedings of the wear lining.
  • EP-B 0 064 449 discloses a flushing device of the type described at the outset, in which a plurality of flat-pressed tubes starting from a distributor located outside the vessel are passed through the converter jacket and the permanent lining and in recesses which are cut into adjacent stones of the wear lining , are used. Although the risk of crushing due to stone expansion and premature joint wear is avoided, there is a risk of leakage due to the distributor located outside the converter jacket.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a flushing device of the type described which is simple to manufacture and easy to install, in which one there is great security against melt breakthrough and which permits prefabrication of the stones of the wear lining which accommodate the flushing device. Furthermore, a low wear of the stones of the wear lining having the flushing device should be ensured.
  • a rigid, extending into the permanent feed pipe for purge gas is guided through the metal outer jacket, at the end of the permanent feed at least two, but at most four manifolds are welded, which diverge from the end of the supply pipe and each merge into a straight pipe part lying in a recess in the stones of the wear chuck, the distributor pipes connected to a feed pipe each comprising a stone and the distance of the straight pipe parts from each other corresponding approximately to the width or length of a brick, and only the straight pipe parts the distribution pipes have a flat cross section.
  • a particularly simple manufacture of the stones of the wear lining is preferably ensured by the fact that each distributor pipe lies at a corner of a stone of the wear lining when viewed from above.
  • the distributor pipes open laterally into the feed pipe and extend from the latter in an arc shape, the curved parts of the distributor pipes having a round cross section.
  • the feed pipe is expediently arranged centrally between the distributor pipes, as seen from above.
  • FIG. 1 a longitudinal section through a steelworks converter
  • FIG. 2 a plan view of the bottom of the steelworks converter
  • FIG. 3 a section along the line 111-111 of FIG. 2 according to FIG show a first embodiment. 4 and 5
  • the flushing device according to the first embodiment is shown on a larger scale in side and in plan. 6 to 10 show a rinsing device according to a second embodiment in a representation analogous to FIGS. 1 to 5.
  • the steelwork converter shown in FIG. 1 has a metal outer jacket 1 which is provided with a permanent lining 4 on the inside both on the bottom 2 and on the side walls 3.
  • a wear lining 7 On the permanent lining, which is formed from refractory bricks 5, a wear lining 7, also made from refractory bricks 6, is bricked up.
  • the refractory bricks 6 of the wear lining 7 are arranged in rows 10 starting from the center 8 of the bottom 2 or the longitudinal axis 9 of the converter, rows 10 parallel to one another with longitudinal joints 11 and the bricks 6 adjacent Rows 10 are arranged offset from one another.
  • the adjacent stones 6 of each row form transverse joints 12 which open into the longitudinal joints 11 between adjacent rows 10 and each abut against a side face of a stone of an adjacent row 10.
  • Flushing devices 14 are used at predetermined points 13 of the base 2, which are preferably provided at approximately the same distance from the center 8 of the base 2 and also at approximately the same distance from one another. Every flushing device. According to the embodiment shown in FIGS. 1 to 5, 14 is formed by a feed pipe 15 for the purging gas which penetrates the metal outer jacket 1 and projects to a height just below the wear lining 7.
  • two distributor tubes 18 are welded into the jacket 17 of the feed tube and diverge from the end 16 of the feed tube 15 in the direction of the converter interior 19, and so on. in the form of a fork-shaped U-shaped bend part 20.
  • These bend parts 20 of the distributor pipes 18 are located in the permanent lining 4 just below the wear lining 7.
  • the bend parts 20 merge into straight-line, flat-squeezed pipe parts 21, the distance 22 of which is approximately the thickness 23 of a stone 6 Wear lining 7 corresponds.
  • a 6 'of the stones 6 of the wear chuck 7 has at the corners flat recesses 24 which are designed to correspond to the cross section of the tube parts 21 and which accommodate the tube parts 21.
  • four distributor pipes 18' which are also located from the feed pipe 15 'with the parts 20', start from a feed pipe 15 'centrally located under a stone 6 "of the wear lining 7. Extend arcuately outwards and upwards and merge into straight tube parts 21 ′, each of which lies in a corner recess 24 of the stone 6 ′′ of the wear lining 7.
  • the cross-sectional area in which the flat pipe parts 21, 21 'of the distributor pipes 18, 18' are located is only very small, the wear on the joints 11 and 12 and thus the risk of a joint runner or a breakthrough of the melt is only minimal .
  • the flushing device 14, 14 ' can be easily installed and does not require any complex measurement of the distances between the distributor pipes 18 or 18'.
  • the distributor pipes 20 have a round cross-section in their arcuate part 20, 20 ', the ramming compound 25 cannot be bent or damaged when the ramming compound 25 is rammed into it.
  • the flushing device 14, 14 ' is further characterized by a particularly small number of welds.
  • the fork-shaped design of the distribution pipes 18, 18 ' allows good mobility thereof, so that the flushing device is flexible enough to push the refractory lining extension of the metallurgical vessel without causing tension.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP87890013A 1986-02-03 1987-01-26 Spüleinrichtung für ein metallurgisches gefäss Expired - Lifetime EP0232244B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0024586A AT384034B (de) 1986-02-03 1986-02-03 Spueleinrichtung fuer ein metallurgisches gefaess
AT245/86 1986-02-03

Publications (3)

Publication Number Publication Date
EP0232244A2 EP0232244A2 (de) 1987-08-12
EP0232244A3 EP0232244A3 (en) 1988-04-06
EP0232244B1 true EP0232244B1 (de) 1990-01-10

Family

ID=3485406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890013A Expired - Lifetime EP0232244B1 (de) 1986-02-03 1987-01-26 Spüleinrichtung für ein metallurgisches gefäss

Country Status (12)

Country Link
US (1) US4744546A (cs)
EP (1) EP0232244B1 (cs)
JP (1) JPH0819453B2 (cs)
KR (1) KR940004898B1 (cs)
CN (1) CN1006303B (cs)
AT (1) AT384034B (cs)
AU (1) AU599949B2 (cs)
CS (1) CS258148B2 (cs)
DE (1) DE3761382D1 (cs)
HU (1) HU205781B (cs)
SU (1) SU1554780A3 (cs)
ZA (1) ZA87137B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904543A1 (de) * 1988-05-13 1989-11-23 Insul Co Vorrichtung zum einfuehren von ruehrgas in geschmolzenes metall in dosierter menge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919238A1 (de) * 1989-06-13 1990-12-20 Voest Alpine Ind Anlagen Spueleinrichtung fuer ein metallurgisches gefaess
DE4126237A1 (de) * 1991-08-08 1993-03-04 Radex Heraklith Vorgefertigtes einbauelement fuer elektro-lichtbogenoefen und zugehoeriger elektro-lichtbogenofen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL296346A (cs) * 1962-08-07
FR2455008A1 (fr) * 1979-04-25 1980-11-21 Siderurgie Fse Inst Rech Piece refractaire a permeabilite selective et orientee pour l'insufflation d'un fluide
LU82069A1 (fr) * 1980-01-09 1981-09-10 Arbed Procede d'affinage d'un bain de metal
CS241483B2 (en) * 1980-06-25 1986-03-13 Arbed Refractory building body
LU82597A1 (de) * 1980-07-09 1982-02-17 Arbed Feuerfester,gasdurchlaessiger baukoerper
FR2495187A1 (fr) * 1980-12-02 1982-06-04 Siderurgie Fse Inst Rech Procede de realisation de fonds de recipients metallurgiques
FR2504664A1 (fr) * 1981-04-24 1982-10-29 Francais Aciers Speciaux Dispositif de soufflage de gaz de brassage dans un convertisseur d'affinage des metaux
AT382889B (de) * 1984-03-15 1987-04-27 Voest Alpine Ag Spueleinrichtung fuer ein metallurgisches gefaess

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904543A1 (de) * 1988-05-13 1989-11-23 Insul Co Vorrichtung zum einfuehren von ruehrgas in geschmolzenes metall in dosierter menge

Also Published As

Publication number Publication date
CS258148B2 (en) 1988-07-15
ATA24586A (de) 1987-02-15
EP0232244A3 (en) 1988-04-06
DE3761382D1 (de) 1990-02-15
US4744546A (en) 1988-05-17
CN87100479A (zh) 1987-10-07
AU599949B2 (en) 1990-08-02
JPH0819453B2 (ja) 1996-02-28
HUT48827A (en) 1989-07-28
CS67087A2 (en) 1987-11-12
SU1554780A3 (ru) 1990-03-30
KR870008035A (ko) 1987-09-23
JPS62205215A (ja) 1987-09-09
AU6745487A (en) 1987-08-06
CN1006303B (zh) 1990-01-03
ZA87137B (en) 1987-09-30
HU205781B (en) 1992-06-29
EP0232244A2 (de) 1987-08-12
AT384034B (de) 1987-09-25
KR940004898B1 (ko) 1994-06-04

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