US3731912A - Containers with sliding valve for liquid smelt - Google Patents

Containers with sliding valve for liquid smelt Download PDF

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Publication number
US3731912A
US3731912A US00057979A US3731912DA US3731912A US 3731912 A US3731912 A US 3731912A US 00057979 A US00057979 A US 00057979A US 3731912D A US3731912D A US 3731912DA US 3731912 A US3731912 A US 3731912A
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United States
Prior art keywords
flow passage
container
plate
valve plate
orifice
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Expired - Lifetime
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US00057979A
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English (en)
Inventor
H Kutzer
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
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Didier Werke AG
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Publication date
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    • 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

Definitions

  • ABSTRACT A container has a sliding valve for a liquid smelt.
  • a refractory block with an insert is set in the bottom of the container.
  • An orifice plate of refractory material is connected to the block and has a flow-passage, and a valve plate having a flow passage for the smelt is located therebelow.
  • a support on the bottom of the container on which the valve plate slides provides a sealing action upon being linearly and rotatively displaceable in relation to the orifice plate.
  • An outflow and a driving device is combined with the valve plate.
  • a refractory body is set in a bore in the orifice plate and has means to feed an inert gas into the smelt.
  • the invention refers to a container for liquid smelt provided with a sliding valve for regulating the quantity discharged and for completely shutting off the discharge outlet, particularly for use in pouring ladles containing liquid metallic smelt in the metallurgical industry, as for instance when pouring steel.
  • Such containers are lined with refractory material.
  • a refractory block with an outlet insert and a channel which extends downwardly through an orifice plate made of refractory material.
  • the channel cooperates with the flow passage of a valve plate located at the underside of the fixed orifice plate.
  • the valve plate is displaceable and is made of refractory material for regulating the quantity of smelt discharged and for completely shutting off this discharge.
  • the valve plate can be set so that it either moves linearly or rotatively with respect to the orifice plate which is essentially a matter of construction and drive.
  • the unavoidable temperature fluctuations to which the parts of refractory material which come into contact with the liquid smelt are exposed not only require the highest quality, particularly concerning the stability of the refractory material which is exposed to temperature fluctuations, but often also leads to considerable temperature drops inside some individual parts, which can cause many difficulties.
  • One of the difficulties can be the well known phenomenon of freezing of the liquid smelt in the sealing area of the valve plate, as soon as the sliding valve is completely closed after pouring and remains in its closed position for some time.
  • An object of the invention is to avoid such disadvantages and prevent a freezing of the liquid smelt when the sliding valve is in a closed position.
  • a further object is to provide a container with a sliding valve which has a body permeable to gas made of refractory material set in the flow passage of the orifice plate, through which, preferably in a closed position of the sliding valve, an inert gas, for instance, argon or nitrogen is supplied to the smelt.
  • an inert gas for instance, argon or nitrogen
  • This causes the primary crystallization processes (freezing) to be disturbed due to the local undercooling caused by the breaking down of the heat flow at the time of the closing of the sliding valve, whereby the crystal nuclei which begin to form, are washed away by the inert gas into the overheated smelt.
  • the freezing" of the smelt in the flow passage of the orifice plate up to the insert can thus be avoided.
  • the crystal nuclei which are specifically heavier, through the upthrust of the inert gas bubbles into the overheated smelt, are homogenized at the same time.
  • the feeding of inert gas causes a regular temperature distribution over the total height of the smelt in the container, starting from the orifice plate, so that the usually relatively colder smelt layer in the area of the container bottom shows a higher temperature.
  • a further object of the invention is to provide a ring jacket as the body which is permeable to gas which is set into the orifice, plate, whereby its axial bore forms the flow passage of the orifice plate, which in an open position of the slide coincides axially with the flow passage of the slide valve.
  • the outer surface of the ring jacket facing the valve plate converges downwardly, whereby a good fit of the ring jacket in the orifice plate against the pressure of the outflowing smelt is provided.
  • the ring jacket may also include in its height and shape, the insert inside the refractory block, in order to adapt itself to the existing weight of the charge.
  • a further object is to provide the feeding of the inert I gas through a bore extending radially through the orifice plate, which leads to the ring jacket and which has an outside connection piece.
  • a still further object in addition to definitely preventing the freezing, is to achieve a homogenization and degasification of the smelt as well as an uplift of the deoxidation and segregation products.
  • the FIGURE shows a partial representation of the lower part of a pouring ladle with a sliding valve in a longitudinal section.
  • the metal jacket 1 of the pouring ladle has refractory lining 2 covering the outer wall and the bottom.
  • Metal jacket 1 and refractory lining 2 are perforated on one spot of the bottom of the ladle for the outflow of the liquid smelt.
  • a rectangular refractory block 3 Positioned in the perforation is a rectangular refractory block 3 with a funnel-shaped inlet hole 3 and an opening which diverges downwardly therefrom.
  • An outlet insert 4 of refractory material is fastened with correspondingly refractory cement within the opening.
  • the sliding valve is composed essentially of a cast iron housing plate 5 with a cast iron lid 5 which can be removed, the housing plate being screwed onto the jacket l on the bottom of the ladle (not shown).
  • An orifice plate 6 of refractory material which has a borehole in the middle and is fastened axially below the insert 4 and the block 1.
  • a cast iron supporting body 7 has a spout 7', and supports a valve plate 8 provided with a flow passage and having an outflow jacket 9 connected to the bottom thereof. Plate 8 and jacket 9 are made of refractory material, and set in a refractory cement.
  • a number of expansion bolts 10 hinged to the housing plate over spring elements 11 of the plate through nuts 12 secure the valve plate 8 together with the supporting body 7 and the outflow jacket 9 slidingly and sealing against orifice plate 6.
  • the supporting body 7 which carries the valve plate 8 and the outflow jacket 9 has cam grooves therein which slide on guideways 5" on lid 5'.
  • a hydraulic drive by K3 engages the supporting body so that the latter can be linearly displaced.
  • An inert gas, i.e., argon or nitrogen is fed into sink 14 through a radial bore 6' in the orifice plate (vertical to the drawing surface, dotted).
  • the inside diameter of the gas sink 14 coincides and aligns axially with the flow conduit of the insert 4.
  • the inert gas can be fed in any position of the valve plate to the gas sink.
  • the height of the ring of cleansing gas can be varied in relation to the height of the smelt for instance it can stretch over the total height of the block 1.
  • a container for a liquid melt and having a slide valve comprising:
  • a refractory block having an opening therethrough; an outlet insert of refractory material positioned in said opening, said insert having a flow passage therethrough; an orifice plate having an orifice therethrough attached to said block; a valve plate having a flow passage therethrough; support means for pressing said valve plate sealingly against said orifice plate and including means for allowing said valve plate to be slidingly movable against said orific plate;
  • outflow jacket means attached to said valve plate and having a flow passage aligned with said flow passage of said valve plate;
  • valve plate driving means operatively connected to said valve plate for selectively moving said valve plate from an open position wherein said flow passage of said valve plate aligns with said flow passage of said insert and said orifice of said orifice plate, to a closed position wherein such alignment is blocked;
  • a container as claimed in claim 1, wherein said porous body comprises a ring-shaped jacket having a flow passage therethrough, said flow passage aligning with said flow passage in said insert.
  • a container as claimed in claim 2, wherein said means for feeding an inert gas comprises a bore extending radially through said orifice plate to the outer surface of said ring-shaped jacket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
US00057979A 1969-07-26 1970-07-24 Containers with sliding valve for liquid smelt Expired - Lifetime US3731912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1938117A DE1938117C2 (de) 1969-07-26 1969-07-26 Behälter mit Schieberverschluß für flüssige Schmelze

Publications (1)

Publication Number Publication Date
US3731912A true US3731912A (en) 1973-05-08

Family

ID=5741030

Family Applications (1)

Application Number Title Priority Date Filing Date
US00057979A Expired - Lifetime US3731912A (en) 1969-07-26 1970-07-24 Containers with sliding valve for liquid smelt

Country Status (7)

Country Link
US (1) US3731912A (enrdf_load_stackoverflow)
JP (1) JPS4921016B1 (enrdf_load_stackoverflow)
CH (1) CH525734A (enrdf_load_stackoverflow)
DE (1) DE1938117C2 (enrdf_load_stackoverflow)
FR (1) FR2053179B1 (enrdf_load_stackoverflow)
GB (1) GB1322375A (enrdf_load_stackoverflow)
SE (1) SE375031B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918613A (en) * 1973-03-01 1975-11-11 United States Steel Corp Sliding gate having selectively operable gas line for porous plug
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US4037762A (en) * 1975-01-23 1977-07-26 Metacon Ag Protective nozzle for the outlet of a casting ladle
US4108675A (en) * 1975-01-29 1978-08-22 Nippon Kokan Kabushiki Kaisha Brick for sliding closure of vessel for holding molten metal
US4210617A (en) * 1978-08-03 1980-07-01 Kaiser Aluminum & Chemical Corporation Method of casting an integral slide gate and nozzle
US4415103A (en) * 1979-09-07 1983-11-15 Uss Engineers And Consultants, Inc. Full throttle valve and method of tube and gate change
US4520860A (en) * 1983-02-28 1985-06-04 Manfred Haissig Horizontal continuous casting apparatus
US4583721A (en) * 1983-11-02 1986-04-22 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US4632283A (en) * 1983-11-02 1986-12-30 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US5174908A (en) * 1989-03-03 1992-12-29 Flo-Con Systems, Inc. Non-reversible sliding gate, valve and method
US5670075A (en) * 1996-01-22 1997-09-23 Usx Corporation Sealing gas delivery system for sliding joints
US5676195A (en) * 1995-07-27 1997-10-14 Usx Corporation Method of and apparatus for limiting ingress of gas to incipient continuous cast slabs
US5996857A (en) * 1997-11-25 1999-12-07 Markos; Charles J. Dispensing container for pourable contents
US6082599A (en) * 1995-07-03 2000-07-04 Vesuvius France Sa Internal nozzle/plate assembly comprising a weakened portion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2462292C3 (de) * 1973-03-01 1984-09-20 USS Engineers and Consultants, Inc., Pittsburgh, Pa. Schieberverschluß am Bodenauslaß eines Gießgefäßes
AT396342B (de) * 1978-09-25 1993-08-25 Uss Eng & Consult Feuerfeste lochplatte
US4834894A (en) * 1980-12-29 1989-05-30 Tribophysics Corporation PTFE oil additive
CH684937A5 (de) * 1991-11-19 1995-02-15 Stopinc Ag Verschlussplatte für einen Schiebeverschluss an einem Metallschmelze enthaltenden Behälter.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH341949A (de) * 1955-09-19 1959-10-31 Patentverwertung Ag Verfahren und Vorrichtung zur Herstellung von Gussstücken
US2943370A (en) * 1958-05-09 1960-07-05 Murarsheed Lateef Hot metal valve for ladles and the like
FR1270625A (fr) * 1960-07-20 1961-09-01 Siderurgie Fse Inst Rech Perfectionnements apportés aux méthodes de traitement des métaux liquides par barbotage de gaz pendant la coulée
US3136834A (en) * 1957-02-21 1964-06-09 Heraeus Gmbh W C Apparatus for continuously degassing molten metals by evacuation
US3253307A (en) * 1964-03-19 1966-05-31 United States Steel Corp Method and apparatus for regulating molten metal teeming rates
US3337329A (en) * 1964-01-20 1967-08-22 Finkl & Sons Co Method of treating molten metal under vacuum
US3430644A (en) * 1967-02-24 1969-03-04 United States Steel Corp Rotary gate for bottom pour vessel
US3454201A (en) * 1964-09-22 1969-07-08 Ernesto Fichera Discharge mechanism for bottom pouring steel ladle
US3465810A (en) * 1967-12-04 1969-09-09 Sylvester Enterprises Inc Apparatus for casting metal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH341949A (de) * 1955-09-19 1959-10-31 Patentverwertung Ag Verfahren und Vorrichtung zur Herstellung von Gussstücken
US3136834A (en) * 1957-02-21 1964-06-09 Heraeus Gmbh W C Apparatus for continuously degassing molten metals by evacuation
US2943370A (en) * 1958-05-09 1960-07-05 Murarsheed Lateef Hot metal valve for ladles and the like
FR1270625A (fr) * 1960-07-20 1961-09-01 Siderurgie Fse Inst Rech Perfectionnements apportés aux méthodes de traitement des métaux liquides par barbotage de gaz pendant la coulée
US3337329A (en) * 1964-01-20 1967-08-22 Finkl & Sons Co Method of treating molten metal under vacuum
US3253307A (en) * 1964-03-19 1966-05-31 United States Steel Corp Method and apparatus for regulating molten metal teeming rates
US3454201A (en) * 1964-09-22 1969-07-08 Ernesto Fichera Discharge mechanism for bottom pouring steel ladle
US3430644A (en) * 1967-02-24 1969-03-04 United States Steel Corp Rotary gate for bottom pour vessel
US3465810A (en) * 1967-12-04 1969-09-09 Sylvester Enterprises Inc Apparatus for casting metal

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918613A (en) * 1973-03-01 1975-11-11 United States Steel Corp Sliding gate having selectively operable gas line for porous plug
US4003561A (en) * 1973-11-23 1977-01-18 United States Steel Corporation Pouring of metals
US4037762A (en) * 1975-01-23 1977-07-26 Metacon Ag Protective nozzle for the outlet of a casting ladle
US4108675A (en) * 1975-01-29 1978-08-22 Nippon Kokan Kabushiki Kaisha Brick for sliding closure of vessel for holding molten metal
US4210617A (en) * 1978-08-03 1980-07-01 Kaiser Aluminum & Chemical Corporation Method of casting an integral slide gate and nozzle
US4415103A (en) * 1979-09-07 1983-11-15 Uss Engineers And Consultants, Inc. Full throttle valve and method of tube and gate change
US4520860A (en) * 1983-02-28 1985-06-04 Manfred Haissig Horizontal continuous casting apparatus
US4583721A (en) * 1983-11-02 1986-04-22 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US4632283A (en) * 1983-11-02 1986-12-30 Toshiba Ceramics Co., Ltd. Molten metal discharging device
US5174908A (en) * 1989-03-03 1992-12-29 Flo-Con Systems, Inc. Non-reversible sliding gate, valve and method
US6082599A (en) * 1995-07-03 2000-07-04 Vesuvius France Sa Internal nozzle/plate assembly comprising a weakened portion
US5676195A (en) * 1995-07-27 1997-10-14 Usx Corporation Method of and apparatus for limiting ingress of gas to incipient continuous cast slabs
US5670075A (en) * 1996-01-22 1997-09-23 Usx Corporation Sealing gas delivery system for sliding joints
US5996857A (en) * 1997-11-25 1999-12-07 Markos; Charles J. Dispensing container for pourable contents

Also Published As

Publication number Publication date
CH525734A (de) 1972-07-31
JPS4921016B1 (enrdf_load_stackoverflow) 1974-05-29
SE375031B (enrdf_load_stackoverflow) 1975-04-07
DE1938117B2 (de) 1971-08-05
GB1322375A (en) 1973-07-04
DE1938117A1 (enrdf_load_stackoverflow) 1971-08-05
DE1938117C2 (de) 1975-12-18
FR2053179B1 (enrdf_load_stackoverflow) 1974-08-09
FR2053179A1 (enrdf_load_stackoverflow) 1971-04-16

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