US3541604A - Gas insufflating means for a molten metal refining container - Google Patents

Gas insufflating means for a molten metal refining container Download PDF

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Publication number
US3541604A
US3541604A US699487A US3541604DA US3541604A US 3541604 A US3541604 A US 3541604A US 699487 A US699487 A US 699487A US 3541604D A US3541604D A US 3541604DA US 3541604 A US3541604 A US 3541604A
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United States
Prior art keywords
gas
molten metal
container
porous refractory
plug member
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Expired - Lifetime
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US699487A
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English (en)
Inventor
Takateru Nomura
Kohei Shimada
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.)
Nippon Steel Corp
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Nippon Steel Corp
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Filing date
Publication date
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Publication of US3541604A publication Critical patent/US3541604A/en
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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
    • 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

  • This invention relates generally to molten metal containers having porous refractory plugs and more particulary to refining gas inlet insufliating devices for molten metal containers.
  • an insuiiiating device wherein a gas-permeable porous firebrick is placed in the side wall of a molten metal container or in the bottom of said container so that an agitating gas or reaction gas may be blown in through said rebrick.
  • the above mentioned porous refractory has many gas-permeable pores passing from lone surface to the other, and thus has a property that, in case acrack occurs, it will be likely to quickly spread in the direction of the pore, that is, from the inside to the outside of the container. Therefore, the molten metal will liow along the crack until it reaches the outside shell plate of the container and makes a hole in said outside shell plate.
  • An object of the present invention is to provide a molten metal container having an insuiating device in the form of a porous refractory plug which will prevent cracks from occurring over the entire lining layer as is mentioned above so that the molten metal will not leak out through the porous lining part.
  • Another object of the present invention is to provide a gas inlet plugging device in which a gas can be jetted into the molten metal with a sufficient jetting force and the safety with respect to the leakage of the molten metal is high.
  • the present invention provides an insufiiating a gas inlet part of a container body having a gas-permeable porous refractory and a supporting brick having one or more gaspermeable pores, said supporting brick being on the back of said porous refractory in the direction of the thickness of the wall of the molten metal container.
  • FIG. 1 is a vertically sectioned view of a plugging device of the present invention.
  • FIG. 2 is a sectional view on line II--II in FIG. 1.
  • FIG. 1 showing a vertically sectional View of a gas inlet insuiating device in a molten metal container of the present invention
  • a porous refractory plug member 1 ⁇ having through pores is fitted in a gas inlet of a container lining layer 4 of molded firebrick and has one end surface directly in contact with said molten metal 12 on the wall surface or in the bottom of said molten metal container.
  • a refractory supporting brick 2 having gas pores 3 supports said porous refractory plug member 1 on the other end surface from that which is in contact with the molten metal 12.
  • This supporting brick 2 is provided with the above mentioned gas pores 3 for feeding an amount of gas required to be blown into the container to the surface of the porous refractory 1.
  • the size and number of said gas pores 3 are selected depending on the size of the porous refractory plug member 1. That is to say, when the area of said other end of the porous refractory plug member 1 is large, it will be preferable to uniformly distribute the gas pores 3 over the entire area of the supporting brick 2 and therefore the size of the gas-permeable pores 3 should be made as small as possible to improve the strength of the supporting brick 2.
  • the gas pores 3 can be concentrated in the central part of the supporting brick 2. If only one gas pore 3 is to be provided or the gas pores 3 are to be concentrated in the central part, it is necessary to provide ribs 5 on the surface of either the supporting brick 2 or the porous refractory plug member 1 so that inlet gas distributing space 6 will be formed. Such space can have any convenient form.
  • An outside shell plate 7 is provided on the molten metal container.
  • a protective plate 9 is fixed to the outside of the supporting brick 2 with a packing 8 between the plates 9 and 7.
  • the outside of brick 2 has a distributing space 10 for the inlet gas.
  • the protective plate 9 is provided with a gas inlet pipe 11 adapted to be connected to a source of gas (not illustrated).
  • porous refractory plug member 1 and supporting brick 2 need not be special ones but may any known ones as long as they fit tightly in the gas inlet hole as shown in FIG. l.
  • the porous refractory plug member 1 can be made relatively thin. Therefore, the resistance to the passage of the gas to be fed into the container can be made so low that the gas can be ietted into the molten metal with a sufficient jetting force, additives can be uniformly mixed and rening agents can be made to quickly react.
  • the present gas inlet insulating device is in two layers, there are advantages that, even if a crack occurs in the porous refractory plug member 1, it will not spread to the supporting brick 2 and that there fore, even if the molten metal 12 ows into the porous refractory plug member, it will be stopped by the supporting brick 2.
  • a gas insulating device for a molten metal refining container having a gas inlet hole with an inner and opening into the container and an outlet end opening out of the container, which comprises a gas-permeable porous refractory plug member adapted to fit tightly into the inner part of the gas inlet hole with one end surface di- 20 rectly in contact with the molten metal in the molten metal container, and a supporting brick having at least one gas pore therein and adapted to t tightly in the outer part of said gas inlet hole and against the other end surface of said porous refractory plug member for support- 25 ing said plug member and plugging the outer part of the gas inlet hole.
  • a device as claimed in claim 1 in which said supporting brick has a plurality of gas pores in the central part of the surface opposed to the porous refractory plug member and further has a plurality of ribs and inlet gas grooves on the peripheral part of said surface, the ribs contacting the plug member.
  • a device as claimed in claim 1 in which said supporting brick has a gas distributing recess on the surface thereof remote from the surface supporting said plug member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US699487A 1967-02-01 1968-01-22 Gas insufflating means for a molten metal refining container Expired - Lifetime US3541604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP847967 1967-02-01

Publications (1)

Publication Number Publication Date
US3541604A true US3541604A (en) 1970-11-17

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ID=11694231

Family Applications (1)

Application Number Title Priority Date Filing Date
US699487A Expired - Lifetime US3541604A (en) 1967-02-01 1968-01-22 Gas insufflating means for a molten metal refining container

Country Status (4)

Country Link
US (1) US3541604A (enrdf_load_stackoverflow)
DE (1) DE1608036A1 (enrdf_load_stackoverflow)
FR (1) FR1555947A (enrdf_load_stackoverflow)
GB (1) GB1210314A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053147A (en) * 1975-04-24 1977-10-11 Swiss Aluminium Ltd. Device for introduction of gases into reaction vessels containing fluids
US4243210A (en) * 1978-06-05 1981-01-06 Aikoh Co. Ltd. Tundish for the continuous casting of steel
CN106392047A (zh) * 2016-08-31 2017-02-15 长兴科特碳化硅有限公司 复合式狭缝透气砖及其制备方法
CN109070198A (zh) * 2016-05-03 2018-12-21 里弗雷克特里知识产权两合公司 气体净化装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518240A1 (fr) * 1981-12-16 1983-06-17 Siderurgie Fse Inst Rech Element refractaire permeable pour l'introduction d'un fluide de brassage dans un bain de metal en fusion
NO156014C (no) * 1984-07-04 1987-07-08 Tinfos Jernverk As Anordning for injisering av gasser i smeltede metaller og mineraler.
AT383617B (de) * 1984-09-18 1987-07-27 Oesterr Amerikan Magnesit Gasspuelstein fuer metallurgische oefen und gefaesse
DE3523171C1 (de) * 1985-06-28 1986-10-30 Didier-Werke Ag, 6200 Wiesbaden Gasspueleinrichtung
DE3633516A1 (de) * 1985-12-04 1987-06-11 Didier Werke Ag Gasspueleinrichtung fuer schmelzenbehaelter
DE3623609C1 (de) * 1986-07-12 1988-01-21 Didier Werke Ag Gasspueleinrichtung
DE3833504A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspueleinrichtung
DE3833503A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspuelstein
DE3833506A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Vorrichtung zum aufspritzen einer ausbesserungsmasse auf einen lochstein
DE3833502A1 (de) * 1988-10-01 1990-04-05 Didier Werke Ag Gasspuelstein
FR2644566B1 (fr) * 1989-03-15 1991-06-21 Air Liquide Four electrique a arc et procede de fusion de ferrailles
DE102008015323A1 (de) * 2008-03-20 2009-10-01 Raadts, Monika Verteilervorrichtung für Strangguss

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB112980A (en) * 1917-01-30 1918-01-30 Willans And Robinson Ltd Improvements in connection with Supplying Compressed Air to the Cylinders of Internal Combustion Engines.
GB684048A (en) * 1949-06-22 1952-12-10 Mini Of Mines And Technical Su The gas flushing of liquid masses
US2871008A (en) * 1950-11-02 1959-01-27 Air Liquide Apparatus for gas flushing of molten metal
CA577247A (en) * 1959-06-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Georges Claude Apparatus for gas-flushing molten metals
US2947527A (en) * 1957-09-09 1960-08-02 Air Liquide Device for insufflating gas into a mass of molten metal
US3373986A (en) * 1964-06-18 1968-03-19 Air Liquide Metallurgical vessel with safety device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA577247A (en) * 1959-06-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Georges Claude Apparatus for gas-flushing molten metals
GB112980A (en) * 1917-01-30 1918-01-30 Willans And Robinson Ltd Improvements in connection with Supplying Compressed Air to the Cylinders of Internal Combustion Engines.
GB684048A (en) * 1949-06-22 1952-12-10 Mini Of Mines And Technical Su The gas flushing of liquid masses
US2871008A (en) * 1950-11-02 1959-01-27 Air Liquide Apparatus for gas flushing of molten metal
US2947527A (en) * 1957-09-09 1960-08-02 Air Liquide Device for insufflating gas into a mass of molten metal
US3373986A (en) * 1964-06-18 1968-03-19 Air Liquide Metallurgical vessel with safety device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053147A (en) * 1975-04-24 1977-10-11 Swiss Aluminium Ltd. Device for introduction of gases into reaction vessels containing fluids
US4243210A (en) * 1978-06-05 1981-01-06 Aikoh Co. Ltd. Tundish for the continuous casting of steel
CN109070198A (zh) * 2016-05-03 2018-12-21 里弗雷克特里知识产权两合公司 气体净化装置
CN109070198B (zh) * 2016-05-03 2020-04-28 里弗雷克特里知识产权两合公司 气体净化装置
CN106392047A (zh) * 2016-08-31 2017-02-15 长兴科特碳化硅有限公司 复合式狭缝透气砖及其制备方法

Also Published As

Publication number Publication date
DE1608036A1 (de) 1970-12-23
GB1210314A (en) 1970-10-28
FR1555947A (enrdf_load_stackoverflow) 1969-01-31

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