US3825241A - Apparatus for introducing gas to hot metal in a bottom pour vessel - Google Patents

Apparatus for introducing gas to hot metal in a bottom pour vessel Download PDF

Info

Publication number
US3825241A
US3825241A US00409834A US40983473A US3825241A US 3825241 A US3825241 A US 3825241A US 00409834 A US00409834 A US 00409834A US 40983473 A US40983473 A US 40983473A US 3825241 A US3825241 A US 3825241A
Authority
US
United States
Prior art keywords
gate
refractory
vessel
nozzle
gas
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
US00409834A
Other languages
English (en)
Inventor
J Shapland
W Township
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.)
United States Steel Corp
Original Assignee
Steel Corp
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 Steel Corp filed Critical Steel Corp
Priority to US00409834A priority Critical patent/US3825241A/en
Priority to ZA00743427A priority patent/ZA743427B/xx
Priority to IN1209/CAL/74A priority patent/IN139602B/en
Priority to NLAANVRAGE7407620,A priority patent/NL176842C/xx
Priority to AU69895/74A priority patent/AU477700B2/en
Priority to CA202,102A priority patent/CA1014717A/en
Priority to DE2428120A priority patent/DE2428120C3/de
Priority to BE145818A priority patent/BE816782A/fr
Priority to JP49072703A priority patent/JPS5761503B2/ja
Priority to FR7422379A priority patent/FR2248898B1/fr
Priority to AR254446A priority patent/AR201777A1/es
Priority to YU1821/74A priority patent/YU36881B/xx
Priority to NO742356A priority patent/NO742356L/no
Priority to AT550474A priority patent/AT336819B/de
Priority to FI2073/74A priority patent/FI207374A/fi
Priority to IT69172/74A priority patent/IT1016536B/it
Priority to BR5658/74A priority patent/BR7405658D0/pt
Priority to GB3101574A priority patent/GB1428644A/en
Priority to RO7479476A priority patent/RO65032A/fr
Priority to DK378074AA priority patent/DK139343B/da
Priority to TR18380A priority patent/TR18380A/xx
Application granted granted Critical
Publication of US3825241A publication Critical patent/US3825241A/en
Priority to HU74UE00000051A priority patent/HU171692B/hu
Priority to ES431365A priority patent/ES431365A1/es
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage

Definitions

  • ABSTRACT A sliding gate apparatus for controlling the pouring of hot metal from a bottom pour vessel into a continuous casting mold is disclosed.
  • the gate includes a permeable -refractory block positioned beneath the vessel pouring opening when the gate is in the active posi tion.
  • the permeable plug has a low permeability center, thus any gas introduced to the hot metal through the plug will tend to flow near the sides of the vessel opening.
  • This invention relates to an improved refractory closure apparatus through which gas can be introduced to molten metal in a bottom pour vessel.
  • molten metal is poured from a ladle into an intermediate pouring vessel such as a tundish or a degassing vessel and from thence into a mold.
  • the intermediate pouring vessel is usually recessed above the nozzle.
  • the metal that first reaches this recess has already lost much of its heat to'the lining of the vessel. This rather quiescent metal settles into the recess, loses additional heat to its surroundings and begins to solidify.
  • the molten metal in the vessel above the recess does not contain sufficient superheat to remelt the solidified metal. Opening the blocked recess has heretofore been accomplished by use of an oxygen lance or by use of slidable gates such as are shown in U.S. Pat. No.
  • the area of the nozzle well that tends to be coldest is that portion nearest the walls of the well, this is the region in which scull and-solidified metal is most likely to form. It is also the region from which the scull is most difficult to wash free.
  • FIG. 1 is a cross section through the nozzle of a bottom pour vessel equipped with a slidable gate constructed in accordance with my invention.
  • FIG. 2 is a cross section of my invented sliding gate on a larger scale than in FIG. 1.
  • FIG. 3 is a top view of the slidable gate of FIG. 2.
  • FIG. 4 is a cross section of an alternative sliding gate which employs a permeable refractory block having a number of holes therein.
  • FIG. 5 is a cross section of the gate of FIG. 4 taken along line V-V of FIG. 4.
  • FIG. 6 is a cross section through the nozzle of a bottom pour vessel equipped with a slidable gate having an alternative gas supply arrangement.
  • FIG. 7 is a cross section of an alternative sliding gate having an annular gas distribution chamber.
  • bottom pour vessel 10 is provided with a refractory lining l2 for receiving molten metal.
  • the bottom wall of the vessel has a well or recess 14 and an outlet opening 16 and carries a nozzle plate 17 fixed to its underside which plate 17 has a nozzle 18 aligned with the opening 16.
  • a sliding (or slidable) gate closure member 20 is mounted beneath the nozzle.
  • the gate can be supported and operated in any desired manner, hence the supporting and operating mechanism is not shown.
  • the gate includes a solid refractory portion 22 (see FIG. 2) having a central opening 24.
  • annular refractory ring or plug 26 is situated in opening 24.
  • the ring 26 surrounds a refractory core 28 of a lower permeability (more dense) material or a nonpermeable material.
  • Tofacilitate assembly of the slidable gate there may be included a bottom refractory 30.
  • the sides and bottom of the slidable gate may be covered by a steel jacket 32.
  • a pipe 34 communicates with chamber 36 beneath ring 26 and is connected to a source of gas 38 (FIG. 1).
  • gate 20 When vessel 10 is prepared to receive molten metal, gate 20 is placed into the position shown in FIG. 1 and gas flow is started through the gate into the nozzle region of the vessel. Molten metal is then poured into the vessel. Gas fiow into the nozzle region prevents solidification of metal in well 14, outlet 16 or nozzle 18 by agitating the metal nearthe nozzle wall to a greater degree than agitation of the metal in the center of the nozzle well.
  • the alternative sliding gate configuration of FIGS. 4 and 5 includes a permeable refractory block 40 centered in the upper portion of the gate 20.
  • the block 40 contains a series of holes 42 near its perimeter to create a ring or zone of increased permeability. Thus most gas will follow the path of least resistance and move upwardly through the portion of the permeable refractory block above these holes into the nozzle well in a ring of generally the same configuration as the holes beneath it.
  • the alternative gas distribution system shown in FIG. 6 includes a slidable gate 60 which differs from gate of FIG. 1 only by the orientation of pipe 62.
  • Pipe 62 communicates at one end with chamber 64 beneath ring 66, and at the other end communicates with a mating pipe 68 embedded in nozzle plate 17, which pipe 68 communicates in turn with pipe 70 which passes through vessel mounting plate 72 and is connected to a source of gas 74.
  • the alternative slidable gate 80 of FIG. 7 includes an impermeable or low permeability central core 82 (which can be cylindrical, or dual-cylindrically-shaped as shown) and a more permeable ring or sleeve 84, so shaped to form an annular gas distribution chamber 86 in the gate.
  • Pipe 88 communicates with chamber 86 and with gas source 74 through pipes 68 and 70.
  • the advantage in having the gas pipes in the nozzle plate and mounting plate is that no time or effort is needed to attach a gas connection to a gas-injecting slidable gate. Positioning of the gate accurately effects the necessary connection.
  • the gates of my invention perform in the same manner as a regular closure gate in physically stopping the flow of molten metal yet they perform the additional function of stirring or agitating the molten metal in the nozzle region thus preventing solidification of the metal in this region prior to the beginning of the pour.
  • the gates have the additional capability of performing as regular closure gates regardless of whether a gas flow has begun. Should the permeable block become plugged or penetrated by molten metal, the gate can easily be replaced by a fresh gate.
  • a slide-through gate for closing the pouring nozzle of a molten-metal containing bottom-pour vessel, said gate comprising a first refractory body
  • a second refractory body set in said first refractory body and having an upper surface no higher than the upper surface of said first refractory body, said second refractory body having an annular portion of higher permeability than its center portion,
  • said refractory bodies forming a gas distribution chamber in said gate
  • a gate according to claim 1 wherein said second refractory has a thick central portion and a thinner annular portion.
  • a gate according to claim 1 further comprising an impermeable metal jacket covering the sides of said gate.
  • a gate according to claim 9 further comprising an impermeable metal jacket covering the bottom of said gate.
  • a bottom pour vessel having an outlet in its bottom wall, a nozzle plate having a pouring nozzle therein fixed to said vessel beneath said outlet and having said nozzle aligned with said outlet, and carrying a gas pipe in the body of said nozzle plate extending from the bottom surface of said nozzle plate to another surface of said nozzle plate, a slidable gate mounted beneath said nozzle plate for closing said pouring nozzle; said gate comprising:
  • first refractory body a second refractory body set in said first refractory body and having an upper surface no higher than the upper surface of said first refractory body, said second refractory body having an annular portion of higher permeability than its center portion,
  • said refractory bodies forming a gas distribution chamber in said gate
US00409834A 1973-10-26 1973-10-26 Apparatus for introducing gas to hot metal in a bottom pour vessel Expired - Lifetime US3825241A (en)

Priority Applications (23)

Application Number Priority Date Filing Date Title
US00409834A US3825241A (en) 1973-10-26 1973-10-26 Apparatus for introducing gas to hot metal in a bottom pour vessel
ZA00743427A ZA743427B (en) 1973-10-26 1974-05-28 Apparatus for introducing gas to hot metal in a bottom-pour vessel
IN1209/CAL/74A IN139602B (fr) 1973-10-26 1974-06-04
NLAANVRAGE7407620,A NL176842C (nl) 1973-10-26 1974-06-06 Schuifconstructie voor het afsluiten van het gietmondstuk van een gietvat.
AU69895/74A AU477700B2 (en) 1973-10-26 1974-06-07 Apparatus for introducing gas to hot metal in a bottom pour vessel
CA202,102A CA1014717A (en) 1973-10-26 1974-06-10 Apparatus for introducing gas to hot metal in a bottom pour vessel
DE2428120A DE2428120C3 (de) 1973-10-26 1974-06-11 Vorrichtung zum Einleiten von Gas in die Durchflußöffnung eines mit einem Schieberverschluß versehenen Gießgefäßes
BE145818A BE816782A (fr) 1973-10-26 1974-06-24 Appareil servant a introduire un gaz dans un metal chaud contenu dans un recipient de coulee par le fond
JP49072703A JPS5761503B2 (fr) 1973-10-26 1974-06-25
AR254446A AR201777A1 (es) 1973-10-26 1974-06-27 Compuerta corrediza pasante para cerrar la boquilla de colada de un recipiente de colada por el fondo
FR7422379A FR2248898B1 (fr) 1973-10-26 1974-06-27
NO742356A NO742356L (fr) 1973-10-26 1974-06-28
YU1821/74A YU36881B (en) 1973-10-26 1974-06-28 Apparatus for introducing gas to hot metl in a boto-pour vessel
AT550474A AT336819B (de) 1973-10-26 1974-07-03 Schieber zum verschliessen der ausflussduse eines giessgefasses
FI2073/74A FI207374A (fr) 1973-10-26 1974-07-05
IT69172/74A IT1016536B (it) 1973-10-26 1974-07-08 Apparecchio per introdurre gas su metallo caldo in un contenitore a colata dal fondo
BR5658/74A BR7405658D0 (pt) 1973-10-26 1974-07-10 Portinhola corredica para fechamento da tubeira de descarga de um recipiente de descarga pelo fundo
RO7479476A RO65032A (fr) 1973-10-26 1974-07-12 Dispositif a vanne glissant pour deblocage d'orifice ecoulement a une poche de coulee
DK378074AA DK139343B (da) 1973-10-26 1974-07-12 Gennemskydningslukke til lukning af taphullet i en bundudstøbningsbeholder.
GB3101574A GB1428644A (en) 1973-10-26 1974-07-12 Apparatus for introducing gas to hot metal in a bottom pour vessel
TR18380A TR18380A (tr) 1973-10-26 1974-07-12 Dipten bosalan bir kazan icindeki kizgin metale gaz ithal etmek icin usul
HU74UE00000051A HU171692B (hu) 1973-10-26 1974-07-24 Termostojkij, gazopropuskajuhhij shibernyj mekhanizm dlja litejnogo kovsha s nizhnim otlivnym otverstiem
ES431365A ES431365A1 (es) 1973-10-26 1974-10-25 Perfeccionamientos en compuertas pasantes de corredera paracerrar la tobera de colada de recipientes de colada por el fondo que contiene metal fundido.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00409834A US3825241A (en) 1973-10-26 1973-10-26 Apparatus for introducing gas to hot metal in a bottom pour vessel

Publications (1)

Publication Number Publication Date
US3825241A true US3825241A (en) 1974-07-23

Family

ID=23622162

Family Applications (1)

Application Number Title Priority Date Filing Date
US00409834A Expired - Lifetime US3825241A (en) 1973-10-26 1973-10-26 Apparatus for introducing gas to hot metal in a bottom pour vessel

Country Status (22)

Country Link
US (1) US3825241A (fr)
JP (1) JPS5761503B2 (fr)
AR (1) AR201777A1 (fr)
AT (1) AT336819B (fr)
BE (1) BE816782A (fr)
BR (1) BR7405658D0 (fr)
CA (1) CA1014717A (fr)
DE (1) DE2428120C3 (fr)
DK (1) DK139343B (fr)
ES (1) ES431365A1 (fr)
FI (1) FI207374A (fr)
FR (1) FR2248898B1 (fr)
GB (1) GB1428644A (fr)
HU (1) HU171692B (fr)
IN (1) IN139602B (fr)
IT (1) IT1016536B (fr)
NL (1) NL176842C (fr)
NO (1) NO742356L (fr)
RO (1) RO65032A (fr)
TR (1) TR18380A (fr)
YU (1) YU36881B (fr)
ZA (1) ZA743427B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US4219188A (en) * 1978-08-19 1980-08-26 Stopinc Aktiengesellschaft Slide valve for the injection of material for use in the outlet of a metallurgical vessel
US4365731A (en) * 1977-01-27 1982-12-28 Didier-Werke, A.G. Refractory structures
EP0166147A1 (fr) * 1984-05-11 1986-01-02 Usx Engineers And Consultants, Inc. Appareil et procédé de versement
GB2239698A (en) * 1990-01-04 1991-07-10 Radex Heraklith Lubricated refractory ceramic member

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1575601A (en) * 1976-01-22 1980-09-24 Didier Werke Ag Refractory structures for outlet valves for metallurgical vessels
JPS53149017U (fr) * 1977-04-28 1978-11-24
JPS54158331A (en) * 1978-06-05 1979-12-14 Aikoh Co Tundish for continuous steel casting
SE441421B (sv) * 1978-09-25 1985-10-07 Uss Eng & Consult Anordning for reglering av metallflodet fran tapphalet i en gjutskenk
SE8106056L (sv) * 1981-05-27 1982-11-28 Aikoh Co Poros plugg for gjutmetallkerl
JPS59150656A (ja) * 1983-02-16 1984-08-28 Toshiba Ceramics Co Ltd スライデイングノズル装置
JPS6099462A (ja) * 1983-11-02 1985-06-03 Toshiba Ceramics Co Ltd 溶融金属排出装置
DE3714680A1 (de) * 1987-05-02 1988-11-17 Didier Werke Ag Feuerfeste verschleissteile fuer ausgussverschluesse
DE102004057381A1 (de) * 2004-11-26 2006-06-01 Heraeus Electro-Nite International N.V. Verfahren zur Regelung des Durchflusses sowie Bodenausguss für ein metallurgisches Gefäß
ES2551627T3 (es) * 2013-09-10 2015-11-20 Refractory Intellectual Property Gmbh & Co. Kg Fondo de cuchara y cuchara

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7149261U (de) * 1973-01-18 Stoecker & Kunz Gmbh Ausguß für Gießpfannen, insbesondere den Tundish bei Stranggußanlagen, zum Vergießen von Stahlschmelzen, vornehmlich aluminiumberuhigten Stahlschmelzen
FR1543169A (fr) * 1964-02-06 1900-01-01 Buse à tubes capillaires
DE1508263B1 (de) * 1966-02-21 1970-10-22 Reisholz Stahl & Roehrenwerk Vorrichtung zur Spuelgasbehandlung von Metall-,vorzugsweise von Stahlschmelzen
US3465810A (en) * 1967-12-04 1969-09-09 Sylvester Enterprises Inc Apparatus for casting metal
DE1910707C3 (de) * 1969-03-03 1982-12-16 6200 Wiesbaden Didier-Werke Ag Bodenschieberverschluß für die Ausgußöffnung von Metallschmelzen enthaltenden Gefäßen und Verfahren zum Betrieb desselben
US3615086A (en) * 1969-06-20 1971-10-26 David A Jepson Apparatus for stirring molten metal
US3581948A (en) * 1969-08-11 1971-06-01 Interstop Ag Sliding gate of a casting ladle for pouring liquid metals
US3684267A (en) * 1970-01-12 1972-08-15 United States Steel Corp Apparatus for introducing gas to hot metal in a bottom-pour vessel
AU2485271A (en) * 1970-06-23 1972-08-03 Japan Special Steel Co., Ltd A method for opening a nozzle hole ina sliding nozzle assembly fora molten metal ladle anda sliding assembly having nozzle hole opening means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US4365731A (en) * 1977-01-27 1982-12-28 Didier-Werke, A.G. Refractory structures
US4219188A (en) * 1978-08-19 1980-08-26 Stopinc Aktiengesellschaft Slide valve for the injection of material for use in the outlet of a metallurgical vessel
EP0166147A1 (fr) * 1984-05-11 1986-01-02 Usx Engineers And Consultants, Inc. Appareil et procédé de versement
US4641768A (en) * 1984-05-11 1987-02-10 Uss Engineers And Consultants, Inc. Teeming apparatus and method
GB2239698A (en) * 1990-01-04 1991-07-10 Radex Heraklith Lubricated refractory ceramic member
GB2239698B (en) * 1990-01-04 1993-09-29 Radex Heraklith Refractory ceramic member

Also Published As

Publication number Publication date
NL176842C (nl) 1985-06-17
DE2428120C3 (de) 1982-10-21
ES431365A1 (es) 1976-11-01
HU171692B (hu) 1978-02-28
NL7407620A (nl) 1975-04-29
YU36881B (en) 1984-08-31
IN139602B (fr) 1976-07-10
DE2428120A1 (de) 1975-04-30
JPS5761503B2 (fr) 1982-12-24
YU182174A (en) 1982-06-18
TR18380A (tr) 1977-05-01
ZA743427B (en) 1975-05-28
IT1016536B (it) 1977-06-20
GB1428644A (en) 1976-03-17
DK139343C (fr) 1979-07-16
NO742356L (fr) 1975-05-26
CA1014717A (en) 1977-08-02
DE2428120B2 (de) 1977-12-01
ATA550474A (de) 1976-09-15
RO65032A (fr) 1979-08-15
AU6989574A (en) 1975-12-11
JPS5073828A (fr) 1975-06-18
AR201777A1 (es) 1975-04-15
DK139343B (da) 1979-02-05
FI207374A (fr) 1975-04-27
FR2248898B1 (fr) 1980-08-01
BR7405658D0 (pt) 1975-08-05
DK378074A (fr) 1975-06-23
FR2248898A1 (fr) 1975-05-23
AT336819B (de) 1977-05-25
BE816782A (fr) 1974-12-24

Similar Documents

Publication Publication Date Title
US3825241A (en) Apparatus for introducing gas to hot metal in a bottom pour vessel
US3467167A (en) Process for continuously casting oxidizable metals
US3684267A (en) Apparatus for introducing gas to hot metal in a bottom-pour vessel
US3809146A (en) Method of opening an intermediate vessel nozzle for continuous casting
US5083754A (en) Apparatus for retaining slag during the discharge of molten metal from a tundish
US4421257A (en) Metal pouring nozzle with gas inlet
US3887117A (en) Slide closure plates and method for preventing melt penetration
US3743139A (en) Method and apparatus for initiating pouring from a blocked opening of a bottom pour vessel
US3206301A (en) Process for the continuous treatment of steel
US3802683A (en) Containers for molten metal
US3467284A (en) Distributor for continuous casting machine
US4232855A (en) Tap-hole closing arrangement
CA1198900A (fr) Methode et dispositif de traitement du metal en fusion dans une cuve
US3765572A (en) Rotatable tundish with multiple outlets
US4555266A (en) Method and apparatus for treating liquid metal in a vessel
JPS60255246A (ja) 連続鋳造装置におけるタンデイツシユの鋳込み装置
JPS63174764A (ja) 連続鋳造における鋳込み開始時の溶鋼酸化防止方法
US4936553A (en) Method for retaining slag during the discharge of molten metal from a vessel
US3332474A (en) Apparatus and method for continuous vacuum degassing and casting of steel and other metals
US4795139A (en) Apparatus for tapping slag-free steel from a continuous melting furnace
US3433288A (en) Continuous casting apparatus with tiltable intermediate ladle
EP0073573A1 (fr) Transfert contrôlé de métal liquide
JPS6316837A (ja) 溶湯注入ノズル
JPH0125806B2 (fr)
CA1193843A (fr) Preparation d'une cuve de traitement de metal en fusion

Legal Events

Date Code Title Description
STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112