US3304075A - Crucible or converter - Google Patents

Crucible or converter Download PDF

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Publication number
US3304075A
US3304075A US329452A US32945263A US3304075A US 3304075 A US3304075 A US 3304075A US 329452 A US329452 A US 329452A US 32945263 A US32945263 A US 32945263A US 3304075 A US3304075 A US 3304075A
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US
United States
Prior art keywords
crucible
mouth
ring
wall
protective ring
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
US329452A
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English (en)
Inventor
Puxkandl Peter
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.)
Voestalpine AG
Voest AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3304075A publication Critical patent/US3304075A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4646—Cooling arrangements
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters

Definitions

  • Known crucibles comprise a cylindrical or pear-shaped vessel provided with a refractory lining.
  • the tilting bearing of such crucibles is mostly effected by carrying or trunnion rings having trunnions secured thereto, or else-in the case of crucibles without a trunnion ring-the trunnions are secured directly to the crucible wall.
  • the invention resides in that a protective ring supplied with a coolant is arranged to surround the mouth of the crucible or a part of the crucible mouth and mounted in such manner that an air gap is provided between the crucible wall in the region of the crucible mouth and the cooled wall area'of the protective ring.
  • the double-walled protective ring advantageously has a hook-like profile, the flange extending radially inwardly forming a part of the end face of the crucible mouth by being in alignment with the end faces of the lining bricks of the crucible mouth, and the other flange being adjusted to the inclination of the crucible wall in the upper part of the crucible.
  • the part of the protective ring extending radially inwardly may comprise at several places, e.g. in the region of the slag hole, a wear-resisting material, preferably a spheroidal cast-iron plate.
  • the invention further proposes to mount that part of the protective ring which surrounds the crucible wall in spaced relation on support members arranged on the crucible wall, e.g. small consoles welded to the crucible wall, which is preferably effected by means of screws and oblong holes or slots which enable a perfect fit but avoid a jam.
  • the protective ring may consist of one or several parts and can be easily replaced.
  • the arrangement according to the invention ensures an excellent durability of the upper part of a top-blowing crucible; it provides for a reliable protection from thermal Patented Feb. 14, 1967 influences from above and from the outside; the circulation of air along the walls of the crucible is not impeded, and it is ensured that differences in heat expansion cannot cause damages anywhere.
  • FIG. 1 is a lateral view of the crucible.
  • FIG. 2 is a vertical sectional view perpendicularly to the plane of drawing of FIG. 1
  • FIG. 3 is a vertical sectional view in the plane of drawing of FIG. 1.
  • the crucible comprises the crucible shell 1 and the refractory lining 2.
  • the upper edge of the crucible shell 1 carries a narrow rim 3 extending radially inwardly.
  • Consoles 4 are welded at peripherally spaced places onto the crucible-wall and serve as support members for the protective ring 5.
  • the protective ring itself has a hook-like profile, the flange 6 extending radially inwardly and forming a part of the end face of the crucible mouth by being in alignment with the end face 8 of the lining bricks of the mouth, whereas the other flange 7 is adjusted to the inclination of the crucible wall 1 in the upper part of the crucible.
  • the two parts of the protective ring 6 and 7 are double-walled so as to include cavities 9 and 10 which communicate with each other so as to provide for a flow of a coolant, such as water; numeral 11 denotes a partition wall.
  • the part 6 of the protective ring which extends radially inwardly may consist of solid material 14 at predetermined places of the periphery, which are exposed to particularly heavy stresses, e.g. in the region of the slag hole or of the tapping hole.
  • this part of the ring is not double-walled, but has a wearing plate welded therein which has the same thickness as the remaining double-walled part 6 (including the gap 12 otherwise formed) and may advantageously consist of spheroidal cast-iron.
  • wear plates 14 are provided at two opposite places of the ring, as is evident from FIG. 1.
  • the protective ring according to the invention may consist of one or several parts, depending on the size of the crucible. Two-part rings have proved particularly satisfactory.
  • the supply and discharge of the coolant may be effected in a manner as is known for the cooling of the trunnions or the trunnion ring, and the conduits may be connected to the cooling system of the said parts.
  • the supply conduits are designated by 15, and the discharge conduits are designated by 16, the said conduits being secured to the outside wall of the crucible shell 1. Alternatively they may. be irnbedded in the permanent lining of the crucible.
  • a crucible for carrying out top-blowing processes and having a Wall and a mouth comprising a hollow protective ring to be supplied with a coolant fixed to and surrounding at least part of the crucible mouth and means supporting said ring in spaced relation to said crucible wall and said mouth of the crucible to provide an air gap betweensaid ring and said wall and said mouth.
  • a crucible for carrying out top-blowing processes comprising a crucible body having a tapered mouth part, a double walled protective ring having a hook-like profile arranged to surround at least part of the crucible mouth,
  • the one flange of said protective ring which extends radially inwardly forming a part of the end face of the crucible mouth and the other flange surrounding said mouth part in spaced relation and being adjusted to the inclination of said mouth part of the crucible.
  • a crucible as set forth in claim 2 wherein the flange of the protective ring which surrounds the crucible mouth part in spaced relation is mounted on support members arranged on the crucible body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
US329452A 1962-12-14 1963-12-10 Crucible or converter Expired - Lifetime US3304075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT980062A AT245014B (de) 1962-12-14 1962-12-14 Tiegel oder Konverter

Publications (1)

Publication Number Publication Date
US3304075A true US3304075A (en) 1967-02-14

Family

ID=3617384

Family Applications (1)

Application Number Title Priority Date Filing Date
US329452A Expired - Lifetime US3304075A (en) 1962-12-14 1963-12-10 Crucible or converter

Country Status (6)

Country Link
US (1) US3304075A (en, 2012)
AT (1) AT245014B (en, 2012)
BE (1) BE641250A (en, 2012)
DE (2) DE1302880C2 (en, 2012)
GB (1) GB1057630A (en, 2012)
LU (1) LU44972A1 (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679195A (en) * 1970-08-21 1972-07-25 Dravo Corp Nose ring for metallurgical processing vessels
US3687436A (en) * 1970-07-28 1972-08-29 Kaiser Ind Corp Cooling apparatus for converter
US3799524A (en) * 1971-07-05 1974-03-26 Fives Lille Cail Cooling arrangement for a converter vessel wall
US3895783A (en) * 1973-09-24 1975-07-22 Pennsylvania Engineering Corp Cooling assembly for steel converter vessels
US5853656A (en) * 1997-07-08 1998-12-29 Bethlehem Steel Corporation Apparatus and method for cooling a basic oxygen furnace trunnion ring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2534331C3 (de) * 1975-08-01 1982-10-07 Mannesmann AG, 4000 Düsseldorf Mündungsschutz für metallurgische Gefäße, insbesondere für Stahlwerkskonverter
NL7602385A (nl) * 1976-03-08 1977-09-12 Hoogovens Ijmuiden Bv Slakschild voor een staalconverter.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043578A (en) * 1959-09-22 1962-07-10 United States Steel Corp Assembly for insertion in a blast furnace wall
US3195875A (en) * 1962-03-07 1965-07-20 Chicago Bridge & Iron Co Steel-making apparatus
US3215425A (en) * 1953-12-28 1965-11-02 Kaiser Ind Corp Metallurgical apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215425A (en) * 1953-12-28 1965-11-02 Kaiser Ind Corp Metallurgical apparatus
US3043578A (en) * 1959-09-22 1962-07-10 United States Steel Corp Assembly for insertion in a blast furnace wall
US3195875A (en) * 1962-03-07 1965-07-20 Chicago Bridge & Iron Co Steel-making apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687436A (en) * 1970-07-28 1972-08-29 Kaiser Ind Corp Cooling apparatus for converter
US3679195A (en) * 1970-08-21 1972-07-25 Dravo Corp Nose ring for metallurgical processing vessels
US3799524A (en) * 1971-07-05 1974-03-26 Fives Lille Cail Cooling arrangement for a converter vessel wall
US3895783A (en) * 1973-09-24 1975-07-22 Pennsylvania Engineering Corp Cooling assembly for steel converter vessels
US5853656A (en) * 1997-07-08 1998-12-29 Bethlehem Steel Corporation Apparatus and method for cooling a basic oxygen furnace trunnion ring

Also Published As

Publication number Publication date
DE1302880C2 (de) 1976-01-02
BE641250A (en, 2012) 1964-04-01
GB1057630A (en) 1967-02-01
AT245014B (de) 1966-02-10
DE1302880B (en, 2012) 1971-12-02
LU44972A1 (en, 2012) 1964-02-10
DE1961136U (de) 1967-06-01

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