EP0053554B2 - Procédé de réalisation de fonds de récipients métallurgiques - Google Patents

Procédé de réalisation de fonds de récipients métallurgiques Download PDF

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Publication number
EP0053554B2
EP0053554B2 EP81401880A EP81401880A EP0053554B2 EP 0053554 B2 EP0053554 B2 EP 0053554B2 EP 81401880 A EP81401880 A EP 81401880A EP 81401880 A EP81401880 A EP 81401880A EP 0053554 B2 EP0053554 B2 EP 0053554B2
Authority
EP
European Patent Office
Prior art keywords
layer
refractory
bricks
elements
permeable
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
EP81401880A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0053554B1 (fr
EP0053554A1 (fr
Inventor
Jean-Claude Grosjean
Jean-Marie Landry
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9248597&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0053554(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT81401880T priority Critical patent/ATE10754T1/de
Publication of EP0053554A1 publication Critical patent/EP0053554A1/fr
Application granted granted Critical
Publication of EP0053554B1 publication Critical patent/EP0053554B1/fr
Publication of EP0053554B2 publication Critical patent/EP0053554B2/fr
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
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • 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
    • C21C5/48—Bottoms or tuyéres of converters
    • 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 bottom of the metallurgical container is constituted as follows: it comprises, successively, on a metal base plate, at least one layer of refractory material, a first layer of refractory bricks, called “safety layer” , then a second layer of refractory bricks, called “wear layer”, in which are incorporated at certain locations the refractory permeable elements.
  • the refractory primary elements are elements such as those described in patent applications EP-A-0021861 in the name of the applicant, for example. They generally consist of an ordered and joined assembly of non-porous refractory plates, juxtaposed without a material seal between them; the tightening and cohesion of these plates is ensured by shrinking, by means of a metal casing; a closure plate completes the metal envelope so as to seal each element vis-à-vis the outside of the container; a gas supply pipe is tightly fixed on this closure plate and opens into a gas distribution channel formed inside the assembly of refractory plates constituting the permeable element.
  • the object of the present invention is precisely to provide a process for producing metallurgical container bottoms of the type mentioned above, making it possible to avoid this degradation of the refractory permeable elements.
  • the subject of the invention is a process for producing the bottom of a metallurgical container of the type of those which successively comprise, on a metal base plate, at least one layer of refractory material, a first layer of bricks refractory, then a second layer of refractory bricks.
  • a metal base plate at least one layer of refractory material, a first layer of bricks refractory, then a second layer of refractory bricks.
  • refractory permeable elements laterally wrapped in a metal sheet and intended to allow the bottom blowing of a gas into the metallurgical container.
  • magnesia bricks with a ceramic bond are impregnated with tar.
  • the applicant has studied the causes of the degradation of the refractory permeable elements. He observed that this degradation came from an infiltration of liquid metal between the lateral metal envelope and the assembly of refractory plates constituting the permeable element and that this infiltration was due to swelling of the metal envelope during the blowing of gas from the bottom.
  • Figure 1 a partial vertical section of the bottom of a metallurgical vessel.
  • the background represented is a spherical background.
  • conduits 9 are tightly connected, via base plates 10, to conduits 11 connected to a manifold 12 placed or not on the converter, supplied by a source of pressurized gas symbolized at 13.
  • the sheet constituting the envelope 7 swells: a space is created between the assembly 6 and the envelope 7 through which liquid metal may possibly pass.
  • the layers 2 and 3 are formed beforehand on the plate 1 and the orifices necessary to allow the conduits 9 to pass through at the locations provided for subsequently disposing the refractory permeable elements.
  • the permeable elements are generally distributed over an intermediate ring of the bottom surface of the container.
  • Figure 2 a top view of the bottom of a metallurgical vessel.
  • the permeable elements 5 distributed over a ring 14 located approximately halfway, on the one hand from the impact zone 15 of the oxygen jet, on the other hand from the wall 16 of the container.
  • the applicant has developed a new method for constructing layer 4, which essentially consists in placing the refractory permeable elements first and surrounding each of them with bricks which are made of expanding material. at temperature.
  • FIG. 3 there is shown schematically a top view of the layer 4 during construction according to the method of the invention.
  • layer 4 in accordance with the invention, is carried out as follows.
  • the refractory permeable elements 5 are placed at the locations provided. Each element 5 is then surrounded by bricks 20 made of ceramic bonded magnesia impregnated with tar. Then, the construction of the layer 4 is finished with refractory bricks 21 of the usual type.
  • the bricks 20 expand upon heating and constitute a sort of vice tightly enclosing the permeable element 5; they therefore block the extension of the sheet metal constituting the envelope of the element 5.
  • These bricks 20 have, in addition, the advantage of resisting crushing and of preventing erosion in the vicinity of the element 5.
  • the embodiment described above relates to the construction of the bottom of a converter for refining cast iron, with a capacity of approximately 300 tonnes, which must include 12 permeable refractory elements. It should be noted in this connection that, in this case, according to a preferred embodiment, the eight elements of the aisles 17 are placed before the four elements of the quarter circles 19.
  • the invention is not limited to the production of converter bottoms having these characteristics and can be applied to the construction of bottoms of other converters and, more generally, of any metallurgical container.
  • the method described can have many variants without departing from the scope of the present invention, in particular as regards the nature of the material constituting the bricks surrounding each permeable element, the main thing being that it is a material expanding at temperature, and as regards the structure of the permeable elements and their distribution in the bottom of the container.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Table Devices Or Equipment (AREA)
  • Motor Or Generator Frames (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP81401880A 1980-12-02 1981-11-27 Procédé de réalisation de fonds de récipients métallurgiques Expired - Lifetime EP0053554B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401880T ATE10754T1 (de) 1980-12-02 1981-11-27 Verfahren zur herstellung von boeden fuer metallurgische gefaesse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8025615 1980-12-02
FR8025615A FR2495187A1 (fr) 1980-12-02 1980-12-02 Procede de realisation de fonds de recipients metallurgiques

Publications (3)

Publication Number Publication Date
EP0053554A1 EP0053554A1 (fr) 1982-06-09
EP0053554B1 EP0053554B1 (fr) 1984-12-12
EP0053554B2 true EP0053554B2 (fr) 1991-08-21

Family

ID=9248597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401880A Expired - Lifetime EP0053554B2 (fr) 1980-12-02 1981-11-27 Procédé de réalisation de fonds de récipients métallurgiques

Country Status (16)

Country Link
US (1) US4403768A (enrdf_load_stackoverflow)
EP (1) EP0053554B2 (enrdf_load_stackoverflow)
JP (2) JPS57120085A (enrdf_load_stackoverflow)
KR (1) KR890003683B1 (enrdf_load_stackoverflow)
AT (1) ATE10754T1 (enrdf_load_stackoverflow)
AU (1) AU542722B2 (enrdf_load_stackoverflow)
BR (1) BR8107825A (enrdf_load_stackoverflow)
CA (1) CA1181587A (enrdf_load_stackoverflow)
CS (1) CS223850B2 (enrdf_load_stackoverflow)
DE (1) DE3167751D1 (enrdf_load_stackoverflow)
ES (1) ES274986Y (enrdf_load_stackoverflow)
FR (1) FR2495187A1 (enrdf_load_stackoverflow)
IN (1) IN155087B (enrdf_load_stackoverflow)
PT (1) PT74043B (enrdf_load_stackoverflow)
SU (1) SU1314956A3 (enrdf_load_stackoverflow)
ZA (1) ZA818089B (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT382889B (de) * 1984-03-15 1987-04-27 Voest Alpine Ag Spueleinrichtung fuer ein metallurgisches gefaess
DE3426736A1 (de) * 1984-07-20 1986-01-30 Klöckner CRA Technologie GmbH, 4100 Duisburg Verfahren zur spuelgasbehandlung von metallschmelzen
AT384034B (de) * 1986-02-03 1987-09-25 Voest Alpine Ag Spueleinrichtung fuer ein metallurgisches gefaess
DE19604413C1 (de) * 1996-02-07 1997-05-28 Veitsch Radex Ag Gasspüleinrichtung für metallurgische Gefäße
DE29602813U1 (de) 1996-02-16 1996-04-04 Beck u. Kaltheuner Feuerfeste Erzeugnisse GmbH & Co KG, 58840 Plettenberg Keramischer Spülblock für metallurgische Gefäße
JPH10298630A (ja) * 1997-02-25 1998-11-10 Tokyo Yogyo Co Ltd 溶融金属用取鍋の底吹きガスの吹き込み装置
EP1727565A2 (en) * 2004-03-12 2006-12-06 Melbj Holdings, LLC Lubricant for the ocular surface
CN101684985B (zh) * 2008-09-24 2011-08-17 中冶天工建设有限公司 环形加热炉炉底保温隔热砖砌筑法
JP7319563B2 (ja) * 2021-12-21 2023-08-02 品川リフラクトリーズ株式会社 羽口部材、および、溶融金属精錬容器の底部に羽口を設置する方法
CN116356115A (zh) * 2023-05-15 2023-06-30 江苏省沙钢钢铁研究院有限公司 钢包底吹装置及钢包底吹流量控制调节方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210459A (fr) * 1957-12-02 1960-03-09 A R B E D Procédé de fabrication d'acier et convertisseur pour ce procédé ou procédés similaires
CH595130A5 (enrdf_load_stackoverflow) * 1975-04-24 1978-01-31 Alusuisse
FR2322202A1 (fr) * 1975-08-29 1977-03-25 Siderurgie Fse Inst Rech Procede d'elaboration d'acier par soufflage d'oxygene
CH625040A5 (enrdf_load_stackoverflow) * 1976-06-01 1981-08-31 Alusuisse
US4238121A (en) * 1977-10-07 1980-12-09 Kawasaki Steel Corporation Hearth structure of an oxygen-bottom-blowing converter
JPS54158331A (en) * 1978-06-05 1979-12-14 Aikoh Co Tundish for continuous steel casting
JPS5565313A (en) * 1978-11-13 1980-05-16 Nippon Steel Corp Steel manufacture with top blown oxygen
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

Also Published As

Publication number Publication date
CS223850B2 (en) 1983-11-25
JPS61150845U (enrdf_load_stackoverflow) 1986-09-18
JPS57120085A (en) 1982-07-26
BR8107825A (pt) 1982-07-06
PT74043B (fr) 1983-04-26
PT74043A (fr) 1981-12-01
JPS6236845Y2 (enrdf_load_stackoverflow) 1987-09-19
ES274986Y (es) 1984-12-01
EP0053554B1 (fr) 1984-12-12
DE3167751D1 (en) 1985-01-24
KR890003683B1 (ko) 1989-09-30
ATE10754T1 (de) 1984-12-15
US4403768A (en) 1983-09-13
ZA818089B (en) 1982-10-27
AU7788381A (en) 1982-06-10
FR2495187B1 (enrdf_load_stackoverflow) 1983-01-28
CA1181587A (fr) 1985-01-29
SU1314956A3 (ru) 1987-05-30
IN155087B (enrdf_load_stackoverflow) 1984-12-29
FR2495187A1 (fr) 1982-06-04
AU542722B2 (en) 1985-03-07
KR830007854A (ko) 1983-11-07
ES274986U (es) 1984-04-16
EP0053554A1 (fr) 1982-06-09

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