US3841616A - Protective alloy addition apparatus - Google Patents

Protective alloy addition apparatus Download PDF

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Publication number
US3841616A
US3841616A US00422990A US42299073A US3841616A US 3841616 A US3841616 A US 3841616A US 00422990 A US00422990 A US 00422990A US 42299073 A US42299073 A US 42299073A US 3841616 A US3841616 A US 3841616A
Authority
US
United States
Prior art keywords
chamber
addition agent
base member
rod
addition
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
US00422990A
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English (en)
Inventor
G Rocher
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.)
METALLURG EXOPROD CORP
METALLURGICAL EXOPROD CORP US
Original Assignee
METALLURG EXOPROD 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 METALLURG EXOPROD CORP filed Critical METALLURG EXOPROD CORP
Priority to US00422990A priority Critical patent/US3841616A/en
Priority to CA208,810A priority patent/CA1024343A/fr
Priority to GB3982674A priority patent/GB1439430A/en
Priority to IT53128/74A priority patent/IT1019347B/it
Priority to BE148929A priority patent/BE820377A/fr
Priority to FR7432516A priority patent/FR2253835B3/fr
Priority to JP49111015A priority patent/JPS5091512A/ja
Priority to LU71024A priority patent/LU71024A1/xx
Priority to DE19742447269 priority patent/DE2447269A1/de
Application granted granted Critical
Priority to NL7413550A priority patent/NL7413550A/xx
Publication of US3841616A publication Critical patent/US3841616A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/0026—Introducing additives into the melt

Definitions

  • a protective alloy addition apparatus is suitable for installation on a refractory lined rod positioned in a pouring ladle.
  • the apparatus comprises a base member adapted for positioning on the rod and an outer sleeve and inner concentric sleeve positioned on the base member so as to form a first chamber between the sleeves and a second chamber radially inward of the inner sleeve.
  • a protecting first addition agent is positioned in the first chamber and an alloy addition agent to be protected is positioned in the second chamber.
  • the addition agent to be protected is also topped and bottomed with the protecting addition agent in the second chamber.
  • My invention relates to ladle addition apparatus normally used in the metals industry and, more particularly, to ladle addition apparatus in the steel industry which includes an addition agent to be protected and an encapsulating protecting addition agent.
  • alloying addition agents are often either readily oxidized, extremely expensive, highly toxic or readily volatilized. Because of any one or a combination of these factors, it is necessary to protect the addition agent so as to in sure that it is properly dissolved into the metal bath with a predictable and favorable yield.
  • the yield normally given in per cent, is the amount of addition agent retained in the metal upon solidification divided by the amount originally added to the molten metal.
  • the predictability of an alloying addition yield is essential to permit the metal producer to operate within narrow ranges of compositional values to achieve the precise properties and characteristics required in todays market.
  • copending application Ser. No. 275,184 filed July 26, 1972 and now US. Pat. No.
  • My invention is a ladle addition apparatus which comprises at least two concentric sleeves positioned on a base member adaptable to cooperate with a refractory lined rod in a ladle.
  • the sleeves form an outer chamber and an inner chamber and the protecting addition agent is placed in the outer chamber.
  • the addition agent to be protected is placed in the inner chamber and is topped and bottomed within the inner chamber by the protecting addition agent.
  • FIG. I is a broken away isometric of my ladle addition apparatus
  • FIG. 1a is an isometric of the portion of the apparatus broken away in FIG. 1;
  • FIG. 2 is a section through my ladle addition apparatus in place on a refractory lined rod.
  • My ladle addition apparatus has general application to the metals industry but has particular application to the steel industry where several of the alloying additions are added to a pouring ladle contemporaneously with the ladle being filled from the steelmaking furnace or vessel.
  • the most common example of an addition agent which must be protected is an addition agent which has a greater affinity for oxygen than for iron and oxidizes readily to form oxides which float into the slag or get entrapped in the solidifying metal as an undesirmore predictable yield to the addition agent being protected.
  • FIGS. 1, 1a and 2 An apparatus to perform such a protective function is illustrated in FIGS. 1, 1a and 2.
  • the structure, per se, generally designated 10, includes an outer sleeve member 11 positioned on a base member 17 which base member includes a central opening.
  • a second sleeve member 12 having a diameter substantially less than the diameter of outer sleeve 11 is concentrically positioned radially inward of outer sleeve 11 on base member 17 to form annular chamber 14 between the respective sleeves.
  • a third sleeve 13 having a central opening 16 is positioned on base member 17 about the central opening thereof and accommodates the refractory lined rod 19, illustrated in FIG. 2.
  • a chamber 15 is thusly formed radially inward-of sleeve 12 and generally between sleeves 12 and 13. Where the apparatus is constructed at the steelmakers facility it is possible to eliminate inner sleeve 13 since a chamber could likewise be formed between inner sleeve 12 and the refractory lined rod 19 in the ladle
  • the protecting addition agent A is positioned in the chamber 14 and the addition agent to be protected B is positioned in chamber 15. Protecting addition agent A also is placed below and above addition agent B in chamber 15 to further encapsulate the addition agent B to be protected, FIG. 1a.
  • the sleeves 11, 12 and 13 are preferably made ofthin sheet metal such as low carbon steel, but they can also be made of a further addition agent such as aluminum which becomes an alloying addition for the steel as well as a further protecting agent for the element to be protected B.
  • the base member 17 is generally a thin metal plate which will support the weight of the sleeves and the various alloying additions employed.
  • the apparatus 10 is positioned in a ladle on a refractory lined rod 19, FIG. 2.
  • Rod 19 normally terminates in an enlarged refractory section 1.8 and a plurality of refractory sleeves 20 are positioned in end to end relationship about rod 19 to protect it from the molten metal.
  • Rod 19 can be the actual stopper rod employed to teem the ladle or can be a separate rod extending into the ladle and held in place by support means as disclosed in my copending applications referred to hereinabove.
  • a ladle addition apparatus suitable for installation on a refractory lined rod positioned in a ladle comprising a base member adapted for positioning on the rod, outer and inner concentric members positioned on the base member and forming a first chamber between the outer and inner members and a second chamber radially inward of the inner member, a protecting first addition agent positioned in the first chamber and a second addition agent to be protected positioned in the second chamber.
  • the apparatus of claim 2 including a second inner sleeve adapted to cooperate with the rod and to form the second chamber between the inner sleeve and the second inner sleeve.
  • a ladle addition apparatus comprising a base member positioned about the rod on the enlarged section, an outer sleeve positioned on the base member, a concentric inner sleeve positioned on the base member forming a first chamber between said sleeves and a second chamber radially inward of the inner sleeve, a first protecting addition agent positioned in the first chamber, a second addition agent to be protected positioned in the second chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
US00422990A 1973-12-10 1973-12-10 Protective alloy addition apparatus Expired - Lifetime US3841616A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00422990A US3841616A (en) 1973-12-10 1973-12-10 Protective alloy addition apparatus
CA208,810A CA1024343A (fr) 1973-12-10 1974-09-09 Materiel d'apport d'un alliage protecteur
GB3982674A GB1439430A (en) 1973-12-10 1974-09-12 Ladle addition apparatus
IT53128/74A IT1019347B (it) 1973-12-10 1974-09-20 Dispositivo di protezione per materiali leganti da aggiunta a metallo fuso in siviera
BE148929A BE820377A (fr) 1973-12-10 1974-09-26 Dispositif destine a effectuer des additions dans une poche de coulee
FR7432516A FR2253835B3 (fr) 1973-12-10 1974-09-26
JP49111015A JPS5091512A (fr) 1973-12-10 1974-09-28
LU71024A LU71024A1 (fr) 1973-12-10 1974-09-30
DE19742447269 DE2447269A1 (de) 1973-12-10 1974-10-03 Vorrichtung zur zugabe von zuschlagstoffen
NL7413550A NL7413550A (nl) 1973-12-10 1974-10-15 Inrichting voor het brengen van legeringstoe- slagen in een gietpan.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00422990A US3841616A (en) 1973-12-10 1973-12-10 Protective alloy addition apparatus

Publications (1)

Publication Number Publication Date
US3841616A true US3841616A (en) 1974-10-15

Family

ID=23677238

Family Applications (1)

Application Number Title Priority Date Filing Date
US00422990A Expired - Lifetime US3841616A (en) 1973-12-10 1973-12-10 Protective alloy addition apparatus

Country Status (10)

Country Link
US (1) US3841616A (fr)
JP (1) JPS5091512A (fr)
BE (1) BE820377A (fr)
CA (1) CA1024343A (fr)
DE (1) DE2447269A1 (fr)
FR (1) FR2253835B3 (fr)
GB (1) GB1439430A (fr)
IT (1) IT1019347B (fr)
LU (1) LU71024A1 (fr)
NL (1) NL7413550A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174962A (en) * 1978-04-27 1979-11-20 Caterpillar Tractor Co. Filled tubular article for controlled insertion into molten metal
EP0005684A1 (fr) * 1978-05-12 1979-11-28 CENTRO SVILUPPO MATERIALI S.p.A. Procédé d'introduction de matières désoxydantes et désulfurantes dans des métaux liquides sans l'utilisation de gaz véhiculants
US4199353A (en) * 1977-01-18 1980-04-22 Canron Inc. Molten metal treatment
US4364770A (en) * 1980-02-26 1982-12-21 Vallourec Manufacture of a composite tubular product
US4555265A (en) * 1983-09-20 1985-11-26 Vallourec Method of treating steel with calcium, to obtain a steel well adapted to cold forming, with a low silicon content
US5352271A (en) * 1992-03-05 1994-10-04 Pechiney Electrometallurgie Composite wire with a plastic sheath for additions to metallic baths

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784177A (en) * 1972-07-26 1974-01-08 Metallurg Exoproducts Corp Method and apparatus for ladle additions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784177A (en) * 1972-07-26 1974-01-08 Metallurg Exoproducts Corp Method and apparatus for ladle additions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199353A (en) * 1977-01-18 1980-04-22 Canron Inc. Molten metal treatment
US4174962A (en) * 1978-04-27 1979-11-20 Caterpillar Tractor Co. Filled tubular article for controlled insertion into molten metal
EP0005684A1 (fr) * 1978-05-12 1979-11-28 CENTRO SVILUPPO MATERIALI S.p.A. Procédé d'introduction de matières désoxydantes et désulfurantes dans des métaux liquides sans l'utilisation de gaz véhiculants
US4364770A (en) * 1980-02-26 1982-12-21 Vallourec Manufacture of a composite tubular product
US4555265A (en) * 1983-09-20 1985-11-26 Vallourec Method of treating steel with calcium, to obtain a steel well adapted to cold forming, with a low silicon content
US5352271A (en) * 1992-03-05 1994-10-04 Pechiney Electrometallurgie Composite wire with a plastic sheath for additions to metallic baths

Also Published As

Publication number Publication date
JPS5091512A (fr) 1975-07-22
DE2447269A1 (de) 1975-06-12
CA1024343A (fr) 1978-01-17
NL7413550A (nl) 1975-06-12
GB1439430A (en) 1976-06-16
IT1019347B (it) 1977-11-10
FR2253835A1 (fr) 1975-07-04
BE820377A (fr) 1975-01-16
LU71024A1 (fr) 1975-04-17
FR2253835B3 (fr) 1977-07-08

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