US3833334A - Apparatus for relining a bof vessel tap hole - Google Patents

Apparatus for relining a bof vessel tap hole Download PDF

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Publication number
US3833334A
US3833334A US00376637A US37663773A US3833334A US 3833334 A US3833334 A US 3833334A US 00376637 A US00376637 A US 00376637A US 37663773 A US37663773 A US 37663773A US 3833334 A US3833334 A US 3833334A
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US
United States
Prior art keywords
tap hole
housing
vessel
outer end
relining
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
US00376637A
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English (en)
Inventor
L Riley
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.)
Premier Refractories and Chemicals Inc
Original Assignee
Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to US00376637A priority Critical patent/US3833334A/en
Priority to CA193,662A priority patent/CA1021534A/en
Priority to BR5180/74A priority patent/BR7405180A/pt
Priority to IT24691/74A priority patent/IT1015598B/it
Priority to GB2949974A priority patent/GB1458728A/en
Priority to SE7408789A priority patent/SE7408789L/
Priority to JP49076540A priority patent/JPS5222882B2/ja
Application granted granted Critical
Publication of US3833334A publication Critical patent/US3833334A/en
Assigned to VFR, INC., 901 EAST 8TH AVENUE, KING OF PRUSSIA, PA. 19406, A DE. CORP. reassignment VFR, INC., 901 EAST 8TH AVENUE, KING OF PRUSSIA, PA. 19406, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: COMBUSTION ENGINEERING, INC.
Assigned to PREMIER REFRACTORIES AND CHEMICALS INC., reassignment PREMIER REFRACTORIES AND CHEMICALS INC., ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE 10-28-88 Assignors: VFR, INC.,
Assigned to CONTINENTAL BANK N.A., A NATIONAL BANKING ASSOCIATION reassignment CONTINENTAL BANK N.A., A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PREMIER REFRACTORIES AND CHEMICALS INC.
Anticipated expiration legal-status Critical
Assigned to CONTINENTAL BANK N.A. reassignment CONTINENTAL BANK N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN PREMIER, INC., A DE CORP.
Assigned to PREMIER REFRACTORIES AND CHEMICALS INC., A DE CORP. reassignment PREMIER REFRACTORIES AND CHEMICALS INC., A DE CORP. RELEASE BY SECURED PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5125 FRAME 0289 Assignors: CONTINENTAL BANK N.A.
Expired - Lifetime legal-status Critical Current

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    • 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
    • C21C5/44—Refractory linings
    • C21C5/445—Lining or repairing the taphole

Definitions

  • ABSTRACT [51] Int. Cl C2lb 7/12 A 5 pparatus for relmmg the tap hole of a BOF vessel [58] Field of Search 425/449, 447, 96, 110, with refractory material after it has been worn or 425/127, 129; 264/30; 266/42; 29/401, eroded away 527.1, 527.2
  • the apparatus of the invention for relining a tap hole of a BOF vessel with refractory material includes a clamping arrangement for aligning and sealingly securing the equipment to the outer end of a tap hole. It further includes an umbrella-type member which in a closed position is small enough to be inserted through the tap hole into the interior of the vessel. Upon opening, it seals off the tap hole from the inside, and acts as a backing means for the refractory slurry which is forced into the tap hole to repair it. A nozzle is extended into the vessel through which water can be sprayed in the vicinity of the umbrella-like member to prevent it from being overheated.
  • FIG. 1 is a side view of the apparatus of the invention
  • FIG. 1 numeral designates the apparatus in its entirety, for boring and relining the tap hole 12 of a BOF vessel 14 with refractory material.
  • the apparatus is mounted on a wheeled carriage or truck 16 which rides on tracks 18 for bringing the apparatus up to the tap hole 12.
  • Hydraulic actuator 19 is used for raising and lowering bed 20, so as to bring ei ther the boring tool 22 or the relining equipment 24 into alignment with the tap hole 12.
  • Bed is secured to the carriage by means of a plurality of pivotally connected links or arms 25.
  • the boring tool 22 is mounted on the end of a shaft 26, which is driven longitudinally and rotatably by motor 28.
  • the rotary motion of the tool removes slag accumulations in tap hole 12.
  • a facing tool 29 comes into contact with the outer face of the flange of tap hole 12 when the boring tool 22 is fully extended, as shown in broken lines on FIG. 1, so as to clean off this surface.
  • the bed 20 is lowered, to bring the refractory relining equipment into alignment with tap hole 12, as shown in FIG. 2.
  • Clamps 32 are hydraulically actuated by piston-cylinder members 34 into engagement with flange 36 of the tap hole 12 (FIG. 4).
  • An annular resilient seal member 38 is spring biased by means of springs 40, to form an effective seal between the outer surface of the tap hole 12 and the end of the cylindrical housing 42.
  • a plurality of these springs 40 are equally spaced around the entire periphery of the housing 42.
  • a cylinder or sleeve 44 Located within the housing 42 is a cylinder or sleeve 44. Air is introduced into the chambers to the right of pistons 46, moving the pistons 46 and attached piston rods 48 to the left. Attached to the rods 48 at their other ends is a plate 50 (FIG. 7) which acts through central member 52 to move cylinder 44 to the left, or into the interior of the vessel 14.
  • the inner end of cylinder 44 has an umbrella-like device 49 attached thereto.
  • the device 49 is actuated between its opened and closed positions by longitudinal movement of inner sleeve 51. This sleeve is moved to the left by energizing air motor 53, which turns the spur gears 54 and 56.
  • a thread 58 inside of gear 56 advances the threaded tube 60, forcing the inner sleeve 51 forward towards the vessel interior.
  • Sleeve 51 is fastened to a piston 62 which causes connecting links 64 to spread the ribs 66, thus I opening the web plates 68 to form a disc at a point about three inches beyond-the inside face of the BOF lining.
  • Water is supplied to nozzle 41 during the entire relining operation through duct 43. This cools the equipment, preventing overheating and damages.
  • Air cylinders 76 are then actuated by supplying air to the chambers to the right of pistons 80 moving piston rods 78, plate 82, sleeve 84, and the ram 86 to the left. This forces the refractory slurry 88 into the tap hole cavity 90.
  • the refractory 88 can initially be placed in the machine in an air-tight packaged form, the package being made of plastic or other suitable material, so that it .does not start setting up or hardening prematurely. This plastic package is broken by the pressure exerted by ram 86.
  • a thin cardboard liner 92 is located in the inner cylindrical surface of the refractory also, to allow the packages of refractory material to maintain their shape prior to loading into the relining machine. This cardboard liner also allows easier removal of cylinder 44 after the relining is completed.
  • the device is made up of a number of web plates 68 which are interconnected by hinges 94 and 96. Each web is pivot ally secured to the end of cylinder 44 by a pin 98 ('FlG. 3). An integral extension or rib 66 of each web 68 is pivotally connected to piston 62 by means of a link 64.
  • movement of piston 62 inwardly of vessel 14 causes the webs to move from their closed position shown in FIG. 5, to their open position illustrated in FIG. 6.
  • the umbrella is closed and the relining equipment is removed from the tap hole.
  • the umbrella end of cylinder 44 and sleeve 51 are connected to the main portion of the cylinders 44 and 51 by means of frangible pins 100 and 102, respectively (FIGS. 3 and 4).
  • Apparatus for relining a tap hole of a vessel with refractory material said apparatus including a cylindrical housing, means for securing the housing to the outer end of the tap hole, a retractable cylindrical member positioned within the housing having an end which can be extended into the interior of the vessel, the space between the housing and the cylindrical member being filled with fluid refractory material, said retractable member having an umbrella-type vaned member attached thereto which in a first closed position can pass through the tap hole of the vessel, and'in a second open position can engage the interior surface of the vessel surrounding the tap hole, thereby sealing such opening, means for moving the umbrella-type vaned member between its open and closed positions, and means for forcing the fluid refractory material into the tap hole, thus relining it.
  • the means for securing the housing to the outer end of the tap hole includes an annular sealing member surrounding the end of the housing which is secured to the outer end of the tap hole, and spring means for resiliently forcing such annular sealing member into engagement with the surface surrounding the outer end of the tap hole.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US00376637A 1973-07-05 1973-07-05 Apparatus for relining a bof vessel tap hole Expired - Lifetime US3833334A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US00376637A US3833334A (en) 1973-07-05 1973-07-05 Apparatus for relining a bof vessel tap hole
CA193,662A CA1021534A (en) 1973-07-05 1974-02-27 Apparatus for relining a bof vessel tap hole
BR5180/74A BR7405180A (pt) 1973-07-05 1974-06-25 Aparelho para revestir o furo torneira de um vaso
IT24691/74A IT1015598B (it) 1973-07-05 1974-07-02 Apparecchiatura per rinnovare il rivestimento del foro di colata di un recipiente in pressione
SE7408789A SE7408789L (enrdf_load_stackoverflow) 1973-07-05 1974-07-03
GB2949974A GB1458728A (en) 1973-07-05 1974-07-03 Apparatus for relining a bof vessel tap hole
JP49076540A JPS5222882B2 (enrdf_load_stackoverflow) 1973-07-05 1974-07-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00376637A US3833334A (en) 1973-07-05 1973-07-05 Apparatus for relining a bof vessel tap hole

Publications (1)

Publication Number Publication Date
US3833334A true US3833334A (en) 1974-09-03

Family

ID=23485835

Family Applications (1)

Application Number Title Priority Date Filing Date
US00376637A Expired - Lifetime US3833334A (en) 1973-07-05 1973-07-05 Apparatus for relining a bof vessel tap hole

Country Status (7)

Country Link
US (1) US3833334A (enrdf_load_stackoverflow)
JP (1) JPS5222882B2 (enrdf_load_stackoverflow)
BR (1) BR7405180A (enrdf_load_stackoverflow)
CA (1) CA1021534A (enrdf_load_stackoverflow)
GB (1) GB1458728A (enrdf_load_stackoverflow)
IT (1) IT1015598B (enrdf_load_stackoverflow)
SE (1) SE7408789L (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448117A1 (fr) * 1979-02-03 1980-08-29 Kurosaki Refractories Co Methode et dispositif pour reparer le trou de coulee d'un convertisseur
EP0072576A3 (en) * 1981-08-19 1983-08-10 Nippon Steel Corporation Repair of blast furnace refractory walls
US4981628A (en) * 1988-10-11 1991-01-01 Sudamet, Ltd. Repairing refractory linings of vessels used to smelt or refine copper or nickel
US4995596A (en) * 1988-10-01 1991-02-26 Didier-Werke Ag Apparatus for repairing a perforated brick in a metallurgical vessel
EP0423579A1 (de) * 1989-10-14 1991-04-24 Asea Brown Boveri Aktiengesellschaft Vorrichtung zur Reinigung des Einguss- und Ausgusssiphons eines Ofens
US5128075A (en) * 1989-06-20 1992-07-07 Glaverbel Ceramic welding repair process
FR2685653A1 (fr) * 1991-12-31 1993-07-02 Lorraine Laminage Dispositif de refection du revetement interieur d'un trou de coulee notamment d'un convertisseur d'acierie.
FR2691164A1 (fr) * 1992-05-18 1993-11-19 Lorraine Laminage Outil de forage du trou de coulée d'un récipient métallurgique tel qu'un convertisseur.
US5415692A (en) * 1988-03-17 1995-05-16 Kurosaki Refractories Co., Ltd. Apparatus for applying material against the wall of a molten metal discharging hole
US5788159A (en) * 1995-07-31 1998-08-04 Didier-Werke Ag Method and apparatus for applying compositions
EP1138790A1 (en) * 2000-03-31 2001-10-04 Louis A. Grant, Inc. Method and apparatus for replacing a tap hole liner in converter vessels
US6663825B2 (en) 1999-07-19 2003-12-16 Louis A. Grant, Inc. Method and apparatus for installing or replacing a furnace tap hole insert

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363912A (en) * 1916-11-14 1920-12-28 Albert A Pauly Method and apparatus for manufacture of pipe
US3122813A (en) * 1960-12-09 1964-03-03 Quigley Co Flexible form for repairing the oxygen lance holes in open hearth furnace roofs
US3396961A (en) * 1965-08-09 1968-08-13 Gen Refractories Co Precast taphole assembly
US3458607A (en) * 1968-04-24 1969-07-29 United States Steel Corp Method and apparatus for repairing tap holes in furnace walls
US3563523A (en) * 1968-08-26 1971-02-16 Dravo Corp Lining apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363912A (en) * 1916-11-14 1920-12-28 Albert A Pauly Method and apparatus for manufacture of pipe
US3122813A (en) * 1960-12-09 1964-03-03 Quigley Co Flexible form for repairing the oxygen lance holes in open hearth furnace roofs
US3396961A (en) * 1965-08-09 1968-08-13 Gen Refractories Co Precast taphole assembly
US3458607A (en) * 1968-04-24 1969-07-29 United States Steel Corp Method and apparatus for repairing tap holes in furnace walls
US3563523A (en) * 1968-08-26 1971-02-16 Dravo Corp Lining apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448117A1 (fr) * 1979-02-03 1980-08-29 Kurosaki Refractories Co Methode et dispositif pour reparer le trou de coulee d'un convertisseur
EP0072576A3 (en) * 1981-08-19 1983-08-10 Nippon Steel Corporation Repair of blast furnace refractory walls
US5415692A (en) * 1988-03-17 1995-05-16 Kurosaki Refractories Co., Ltd. Apparatus for applying material against the wall of a molten metal discharging hole
US4995596A (en) * 1988-10-01 1991-02-26 Didier-Werke Ag Apparatus for repairing a perforated brick in a metallurgical vessel
US4981628A (en) * 1988-10-11 1991-01-01 Sudamet, Ltd. Repairing refractory linings of vessels used to smelt or refine copper or nickel
US5128075A (en) * 1989-06-20 1992-07-07 Glaverbel Ceramic welding repair process
EP0423579A1 (de) * 1989-10-14 1991-04-24 Asea Brown Boveri Aktiengesellschaft Vorrichtung zur Reinigung des Einguss- und Ausgusssiphons eines Ofens
FR2685653A1 (fr) * 1991-12-31 1993-07-02 Lorraine Laminage Dispositif de refection du revetement interieur d'un trou de coulee notamment d'un convertisseur d'acierie.
FR2691164A1 (fr) * 1992-05-18 1993-11-19 Lorraine Laminage Outil de forage du trou de coulée d'un récipient métallurgique tel qu'un convertisseur.
US5788159A (en) * 1995-07-31 1998-08-04 Didier-Werke Ag Method and apparatus for applying compositions
US6663825B2 (en) 1999-07-19 2003-12-16 Louis A. Grant, Inc. Method and apparatus for installing or replacing a furnace tap hole insert
EP1138790A1 (en) * 2000-03-31 2001-10-04 Louis A. Grant, Inc. Method and apparatus for replacing a tap hole liner in converter vessels

Also Published As

Publication number Publication date
SE7408789L (enrdf_load_stackoverflow) 1975-01-07
IT1015598B (it) 1977-05-20
JPS5038607A (enrdf_load_stackoverflow) 1975-04-10
GB1458728A (en) 1976-12-15
JPS5222882B2 (enrdf_load_stackoverflow) 1977-06-21
CA1021534A (en) 1977-11-29
BR7405180A (pt) 1976-02-24

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Date Code Title Description
AS Assignment

Owner name: VFR, INC., 901 EAST 8TH AVENUE, KING OF PRUSSIA, P

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COMBUSTION ENGINEERING, INC.;REEL/FRAME:004993/0109

Effective date: 19880927

AS Assignment

Owner name: PREMIER REFRACTORIES AND CHEMICALS INC.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE 10-28-88;ASSIGNOR:VFR, INC.,;REEL/FRAME:005020/0764

Effective date: 19890118

AS Assignment

Owner name: CONTINENTAL BANK N.A., A NATIONAL BANKING ASSOCIAT

Free format text: SECURITY INTEREST;ASSIGNOR:PREMIER REFRACTORIES AND CHEMICALS INC.;REEL/FRAME:005125/0289

Effective date: 19890621

AS Assignment

Owner name: CONTINENTAL BANK N.A. A NATIONAL BANKING ASSOCIA

Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN PREMIER, INC., A DE CORP.;REEL/FRAME:005971/0674

Effective date: 19911211

Owner name: CONTINENTAL BANK N.A.

Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN PREMIER, INC., A DE CORP.;REEL/FRAME:005971/0674

Effective date: 19911211

AS Assignment

Owner name: PREMIER REFRACTORIES AND CHEMICALS INC., A DE CORP

Free format text: RELEASE BY SECURED PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5125 FRAME 0289;ASSIGNOR:CONTINENTAL BANK N.A.;REEL/FRAME:006098/0524

Effective date: 19911211