EP0224657A1 - Installation pour lavage au gaz dans un récipient contenant des métaux en fusion - Google Patents

Installation pour lavage au gaz dans un récipient contenant des métaux en fusion Download PDF

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Publication number
EP0224657A1
EP0224657A1 EP86111871A EP86111871A EP0224657A1 EP 0224657 A1 EP0224657 A1 EP 0224657A1 EP 86111871 A EP86111871 A EP 86111871A EP 86111871 A EP86111871 A EP 86111871A EP 0224657 A1 EP0224657 A1 EP 0224657A1
Authority
EP
European Patent Office
Prior art keywords
gas purging
cone
gas
scavenging
scavenging block
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.)
Granted
Application number
EP86111871A
Other languages
German (de)
English (en)
Other versions
EP0224657B1 (fr
Inventor
Manfred Winkelmann
Hans Rothfuss
Udo Muschner
Karl Heinz Schmitt
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Priority to AT86111871T priority Critical patent/ATE44771T1/de
Publication of EP0224657A1 publication Critical patent/EP0224657A1/fr
Application granted granted Critical
Publication of EP0224657B1 publication Critical patent/EP0224657B1/fr
Expired legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a gas purging device for melt containers, in particular in induction furnaces, with a gas purging cone, the smaller top surface of which faces the melt and the larger base surface of which stands up.
  • the object of the invention is to propose a gas purging device with a purging option secured during the operating phase, the gas purging cone which is primarily exposed to wear and tear should be easy to replace.
  • the above object is achieved in that under the first, upper gas purging cone there is a second, lower gas purging cone, the top surface of which is smaller than the bottom surface of the first gas purging cone, and in that the first, upper gas purging cone with its ring zone projecting beyond the head surface of the second lower gas purging cone the floor surface stands on a stone in which the second gas flushing cone is stored.
  • the upper gas purging cone is easily replaceable in this arrangement. It does not burden the lower gas flushing cone.
  • Favorable purging conditions are present during operation, since the cross section of the upper gas purging cone does not taper immediately as seen from the top surface of the lower gas purging cone, but initially widens.
  • the gas purging device according to the invention can be used, for example, in the aluminum industry, in gray cast iron production, in steel ladles, pig iron transport vessels, continuous casting distributors or converters.
  • a first, upper gas purging cone 3 without a sheet metal jacket is inserted into the floor lining 1 of a melt container 2. Its head surface 3 'protrudes into the melt container 2.
  • a recess 4 is provided on its bottom surface 3 ", which is enclosed by an annular zone 5 of the bottom surface 3".
  • a square stone 6 sits in the floor lining 1, into which a second, lower gas purging cone 7 is walled by means of a gas-tight mortar 8.
  • the ring zone 5 sits on the stone 6 in the vicinity of the top surface 7 '.
  • the head surface 7 ' protrudes into the recess 4 without resting on the gas purge cone 3.
  • a pressure distribution chamber 9 lies between the top surface 7 'and the gas purge cone 3.
  • the top surfaces 7' can be of different sizes.
  • the gas flushing cone 7 sits with its lower region in a sheet metal jacket 10, which holds a base plate 11.
  • a gas distribution chamber 12 is formed on the bottom surface 7 ", from which capillaries 13 lead to the top surface 7 '.
  • the bottom surface 7" and the bottom surface 3 " can be of different sizes.
  • the stone 6 is attached to the gas flushing cone 7 on this. Eyelets 16 are provided for transport. This creates an easy-to-use unit consisting of the carrier 15, the stone 6 and the gas flushing cone 7.
  • a gas source with a flow meter, which indicates wear of the porous gas flushing cone 3, is connected to the gas supply line 14.
  • the arrangement described ensures a secure gas flow. If the gas purging cone 3 is to be replaced due to wear, the unit is removed for this purpose and a fresh gas purging cone 3 is inserted. The gas purging cone 7 is practically not subject to wear.
  • the gas purging cone 3 can also be fastened with its ring zone 5 onto the stone 6 by means of a gas-tight mortar layer before the assembly is inserted into the floor brick 1.
  • the gas purging cone 3 Since the gas purging cone 3 is used without a sheet metal jacket, there is no need to fear electrical overturning in an induction oven.
  • the gas purge cone 3 has an exclusively ceramic material contact with the melt.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Details (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Noodles (AREA)
EP86111871A 1985-12-04 1986-08-27 Installation pour lavage au gaz dans un récipient contenant des métaux en fusion Expired EP0224657B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111871T ATE44771T1 (de) 1985-12-04 1986-08-27 Gasspueleinrichtung fuer schmelzenbehaelter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3542781 1985-12-04
DE3542781 1985-12-04

Publications (2)

Publication Number Publication Date
EP0224657A1 true EP0224657A1 (fr) 1987-06-10
EP0224657B1 EP0224657B1 (fr) 1989-07-19

Family

ID=6287536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111871A Expired EP0224657B1 (fr) 1985-12-04 1986-08-27 Installation pour lavage au gaz dans un récipient contenant des métaux en fusion

Country Status (10)

Country Link
US (1) US4695043A (fr)
EP (1) EP0224657B1 (fr)
JP (1) JPH0730383B2 (fr)
CN (1) CN1025051C (fr)
AT (1) ATE44771T1 (fr)
BR (1) BR8605843A (fr)
CA (1) CA1297144C (fr)
DE (1) DE3664485D1 (fr)
NO (1) NO164847C (fr)
ZA (1) ZA868077B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458040A2 (fr) * 1990-04-24 1991-11-27 Didier-Werke Ag Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz
US6250955B1 (en) * 1999-12-17 2001-06-26 David Archuleta Pigtailed scotchcast assembly

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840354A (en) * 1988-06-22 1989-06-20 Labate M D Stirring brick with shaped gas volume control openings
DE3830871C1 (fr) * 1988-09-10 1989-11-02 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
FR2644566B1 (fr) * 1989-03-15 1991-06-21 Air Liquide Four electrique a arc et procede de fusion de ferrailles
US5200135A (en) * 1991-07-22 1993-04-06 Vargas Gutierrez Gregorio Method to improve the service life of gas injection devices used to introduce a gas into molten metal
US6116079A (en) * 1999-01-05 2000-09-12 Asarco Incorporated Liquid copper hydrogen sample probe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
US3834685A (en) * 1973-09-24 1974-09-10 Allegheny Ludlum Ind Inc Apparatus for injecting fluids into molten metals
GB2150868A (en) * 1983-10-31 1985-07-10 Morgan Refractories Ltd Porous plug assemblies for molten metal vessels e.g. ladles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE635868A (fr) * 1962-08-07
SE392479B (sv) * 1974-03-20 1977-03-28 Asea Ab Forma vid metallurgiska konvertrar och smeltugnar
JPS54100904U (fr) * 1977-12-26 1979-07-16
DE3003884C2 (de) * 1980-02-02 1983-02-10 Didier-Werke Ag, 6200 Wiesbaden Verfahren zum Einbau und Austausch eines gasdurchlässigen feuerfesten Einsatzes in der Wandung eine Schmelze enthaltenden Behälters für das Einführen von Gasen, in den Behälter und Anordnung für die Durchführung dieses Verfahrens
WO1983003427A1 (fr) * 1982-03-29 1983-03-29 Miyawaki, Yoshiharu Ajutage de soufflage de gaz par le fond dans un four d'affinage de metaux en fusion et procede de fusion de l'acier utilisant ce meme ajutage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
US3834685A (en) * 1973-09-24 1974-09-10 Allegheny Ludlum Ind Inc Apparatus for injecting fluids into molten metals
GB2150868A (en) * 1983-10-31 1985-07-10 Morgan Refractories Ltd Porous plug assemblies for molten metal vessels e.g. ladles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GIESSEREI 72, Nr. 6, 18. März 1985, Seiten 133-138; W. STECHER: "Beitrag zur Metallurgie des Schmelzens hochlegierter Stähle im Induktionsofen" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458040A2 (fr) * 1990-04-24 1991-11-27 Didier-Werke Ag Installation pour lavage au gaz avec une brique perforée et une brique pour lavage au gaz
EP0458040A3 (en) * 1990-04-24 1991-12-11 Didier-Werke Ag Gas purging assembly with a perforated brick and a gas purging brick
US6250955B1 (en) * 1999-12-17 2001-06-26 David Archuleta Pigtailed scotchcast assembly

Also Published As

Publication number Publication date
ZA868077B (en) 1987-06-24
US4695043A (en) 1987-09-22
EP0224657B1 (fr) 1989-07-19
JPS62136517A (ja) 1987-06-19
CN1025051C (zh) 1994-06-15
NO864855D0 (no) 1986-12-03
NO164847C (no) 1990-11-21
CA1297144C (fr) 1992-03-10
JPH0730383B2 (ja) 1995-04-05
DE3664485D1 (en) 1989-08-24
ATE44771T1 (de) 1989-08-15
CN86106459A (zh) 1988-04-06
BR8605843A (pt) 1987-08-25
NO864855L (no) 1987-06-05
NO164847B (no) 1990-08-13

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