US3531098A - Apparatus for plugging and repairing tapholes in metallurgical furnaces - Google Patents

Apparatus for plugging and repairing tapholes in metallurgical furnaces Download PDF

Info

Publication number
US3531098A
US3531098A US851235A US3531098DA US3531098A US 3531098 A US3531098 A US 3531098A US 851235 A US851235 A US 851235A US 3531098D A US3531098D A US 3531098DA US 3531098 A US3531098 A US 3531098A
Authority
US
United States
Prior art keywords
pipe
taphole
tapholes
plugging
furnace
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
US851235A
Other languages
English (en)
Inventor
Werner Resch
Oskar Fliege
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Hoesch 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 Hoesch AG filed Critical Hoesch AG
Application granted granted Critical
Publication of US3531098A publication Critical patent/US3531098A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • 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
    • F27D3/14—Charging or discharging liquid or molten material
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools

Definitions

  • Axial compression or condensation of plastic material is effected by a feed screw which supports the tapping pipe and can be detached therefrom upon completion of the material admitting step.
  • a feed screw which supports the tapping pipe and can be detached therefrom upon completion of the material admitting step.
  • the inner end of the taphole is closed by a plug of hardened plastic material which is introduced from the interior of the furnace.
  • the present invention relates to an apparatus for plugging or closing and repairing tapholes in metallurgical furnaces, particularly in hot Siemens-Martin and other open-hearth furnaces.
  • heat-resistant material is introduced into a taphole and is tamped in place by hand. Such procedure is very slow, its quality is dependent on the skill and carefulness of workmen, and it can be carried out only when the furnace is cold.
  • German Pat. No. 572,208 which suggests the use of two screw conveyors to feed a plastic mass into the taphole of a blast furnace.
  • This proposal is unsatisfactory in connection with Siemens- Martin furnaces, particularly for repair of hot Siemens- Martin furnaces, because such furnaces are provided with tapping pipes which are fitted into tapholes and because the feed screws disclosed in the patent cannot supply a mass having a preferably granular consistency which is best suited for repair work in a Siemens-Martin furnace.
  • a concomitant object of the invention is to provide an apparatus which can tamp the plastic mass in the taphole simultaneously with admission of such mass so that the tamping operation does not consume extra time.
  • the apparatus of our invention comprises means for introducing a tapping pipe into the taphole in such a way that the pipe is received therein with clearance, imparting to the thus inserted tapping pipe a rotary movement, simultaneously introducing into the taphole a fire-resistant hardenable plastic mass to embed the pipe in the mass and to fill the hole around the pipe, and terminating the rotary movement of the tapping pipe.
  • the tapping pipe is caused to perform a radial movement during rotation so that it tamps the plastic mass in response to its rotation.
  • the plastic mass is introduced from the outer end of the taphole in the axial direction of the pipe, and the pipe is preferably inclined downwardly and outwardly and a portion thereof extends from the taphole.
  • the admission of plastic mass is preferably effected by resorting to a hollow feed screw operating in the cylinder of a conveyor and receiving the outer portion of the tapping pipe.
  • the pipe is eccentric with reference to the feed screw and wobbles to perform the aforementioned radial tamping movements.
  • FIG. 1 A single figure of the drawing is a partly elevational and partly vertical sectional view of an apparatus which embodies one form of our invention, further showing a portion of an open-hearth metallurigcal furnace having a taphole which is to be plugged and repaired.
  • the drawing illustrates an apparatus which can be used in plugging and repair of a taphole 12 provided in an open-hearth furnace, preferably a Siemens-Martin furnace.
  • This apparatus comprises a main support in the form of a platform 1 suspended on cables 2 which are connected to the hook 3 of a crane or the like so that the entire apparatus can be moved toward or away from the outer end of the taphole 12.
  • the platform 1 supports a conveyor having a horizontal or nearly horizontal cylinder 8 whose left-hand open end constitutes an outlet and can be moved close to or into the outer end of the taphole 12.
  • the feed of the conveyor includes a hollow rotary feed screw 7 which is received in the cylinder 8 with some clearance and whose bore accommodates the right-hand portion of a tapping pipe 10.
  • the drive for rotating the tapping pipe 10 is constituted by the drive for the feed screw 7.
  • This drive includes an electric motor 4 which is mounted on the platform 1 and a variablespeed transmission 5 which receives motion from the motor and has an output member 5a releasably connected with the tapping pipe by a substantially diametrically extending connecting bolt 11 or the like.
  • the output member 5a is rigid with the feed screw 7 and the latter accommodates the right-hand portion of the pipe 10 in such a way that the pipe is eccentrically received therein and wobbles when the motor 4 drives the transmission 5.
  • Such wobbling causes the left-hand portion of the pipe 10 to perform radial movements and to tampthe plastic mass which issues from the outlet 8a of the cylinder 8 in response to rotation of the feed screw 7.
  • the cylinder 8 receives plastic material through a hopper 9.
  • the taphole 12 can be plugged and repaired without requiring any cooling of the furnace F.
  • the crane is manipulated to move the platform 1 close to the outer end of the taphole 12 so that the outlet 8a of the cylinder 8 is adjacent to the outer end of the taphole.
  • the pipe 10 is releasably secured to the output member 5a by the bolt 11 and is received in the feed screw 7 with sufiicient clearance and eccentrically so that it wobbles in response to rotation of the feed screw.
  • the hopper 9 admits hardenable plastic heat-resistant material M into the cylinder 8 and the motor 4 is started to drive the transmission 5 whereby the feed screw 7 forces plastic material M into the taphole and fills it all around the left-hand portion of the pipe 10.
  • the pipe is embedded in plastic mass M and simultaneously produces a very satisfactory radial tamping action. Axial tamping or compacting is effected by the screw 7.
  • the improved apparatus enables the operators to plug and repair tapholes with a high degree of uniformity and with little loss in time so that the plugging and repair work do not materially affect the output of the furnace. Furthermore, the quality of repair work is very satisfactory because the plastic mass M admitted by cylinder 8 is tamped in tWo directions, namely, radially by the wobbling pipe 10 and axially by the feed screw 7.
  • the plastic mass M consists of tar dolomite or tar-bonded magnesite.
  • Apparatus for plugging and repairing tapholes in metallurgical furnaces, particularly in open-hearth furnaces wherein the taphole receives a tapping pipe embedded in a mass of fire-resistant hardenable plastic material comprising conveyor means having an outlet adapted to be placed adjacent to the outer end of a taphole and comprising elongated rotary feed means for admitting plastic material into the taphole through said outlet; and drive means for supporting the tapping pipe centrally within said elongated rotary feed means in a position in which the pipe extends into the taphole from outside and receives rotary motion during admission of plastic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US851235A 1966-10-17 1969-08-19 Apparatus for plugging and repairing tapholes in metallurgical furnaces Expired - Lifetime US3531098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0060772 1966-10-17

Publications (1)

Publication Number Publication Date
US3531098A true US3531098A (en) 1970-09-29

Family

ID=7161114

Family Applications (1)

Application Number Title Priority Date Filing Date
US851235A Expired - Lifetime US3531098A (en) 1966-10-17 1969-08-19 Apparatus for plugging and repairing tapholes in metallurgical furnaces

Country Status (7)

Country Link
US (1) US3531098A (de)
AT (1) AT270718B (de)
BE (1) BE705181A (de)
DE (1) DE1508193B1 (de)
GB (1) GB1180800A (de)
LU (1) LU54670A1 (de)
NL (1) NL6712870A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385749A (en) * 1970-04-28 1983-05-31 Linden Gerardus A C V D Method and a device for repairing the tap hole of a steel converter
US5128075A (en) * 1989-06-20 1992-07-07 Glaverbel Ceramic welding repair process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116222229B (zh) * 2023-05-09 2023-06-30 河北宏贯路桥科技有限公司 一种用于金属制品渗锌加工的粉料上料装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1529219A (en) * 1920-02-21 1925-03-10 Bruce Ogden W Making open-hearth-furnace bottoms
US1774373A (en) * 1930-08-26 And alfred osolin
DE572208C (de) * 1929-06-26 1933-03-13 John C Hopkins Stichlochstopfmaschine fuer Hochoefen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1160475B (de) * 1960-11-23 1964-01-02 Hans Joachim Eitel Verfahren und Vorrichtung zur Instandsetzung der Abstichoeffnungen von Siemens-Martin- und von aehnlichen, von oben nicht zugaenglichen Schmelzoefen
DE1207410B (de) * 1963-04-13 1965-12-23 Eitel Hans Joachim Vorrichtung zur Instandsetzung der Abstichoeffnungen von Siemens-Martin- und aehnlichen von oben nicht zugaenglichen Schmelzoefen
DE1220874C2 (de) * 1964-07-25 1974-11-07 Thyssen Huette Ag Verfahren und Vorrichtung zum Flicken von Stichloechern grosser metallurgischer OEfen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774373A (en) * 1930-08-26 And alfred osolin
US1529219A (en) * 1920-02-21 1925-03-10 Bruce Ogden W Making open-hearth-furnace bottoms
DE572208C (de) * 1929-06-26 1933-03-13 John C Hopkins Stichlochstopfmaschine fuer Hochoefen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385749A (en) * 1970-04-28 1983-05-31 Linden Gerardus A C V D Method and a device for repairing the tap hole of a steel converter
US5128075A (en) * 1989-06-20 1992-07-07 Glaverbel Ceramic welding repair process

Also Published As

Publication number Publication date
GB1180800A (en) 1970-02-11
AT270718B (de) 1969-05-12
LU54670A1 (de) 1968-05-08
BE705181A (de) 1968-04-16
NL6712870A (de) 1968-04-18
DE1508193B1 (de) 1969-09-18

Similar Documents

Publication Publication Date Title
US3396961A (en) Precast taphole assembly
CN111560487A (zh) 一种高炉铁口孔道铁水喷溅的处理装置及方法
US3531098A (en) Apparatus for plugging and repairing tapholes in metallurgical furnaces
US3563523A (en) Lining apparatus
US3458607A (en) Method and apparatus for repairing tap holes in furnace walls
US3507483A (en) Axially reciprocating screw conveyor means for closing tap hole
US4637590A (en) Method and apparatus for opening and closing a taphole in furnaces
RU2163642C1 (ru) Способ ремонта футеровки доменной печи
US5792393A (en) Method of repairing hot refractory linings in high-temperature vessels
US4789139A (en) Methods of and apparatus for constructing refractory brick linings on tuyere plates for metal treating vessels
US4279845A (en) Process for coating the inner wall of a furnace or like apparatus
US4860422A (en) Rebuilding of the stack, bosh and hearth of a blast furnace using a remote controlled refractory gunning device
US4340349A (en) Apparatus for repairing hot spots in a refractory lined wall
US3700347A (en) Universal tap jack
US5217658A (en) Method for repairing a hot-blast long-time cupola furnace
JPH0196308A (ja) 高炉吹卸し操業方法
US3455012A (en) Apparatus for and method of removing cooling plates
CN110669897A (zh) 一种维护底吹快换后喷嘴与座砖间隙的装置及其方法
RU2823415C1 (ru) Способ ремонта футеровки главного желоба доменной печи
SU363749A1 (ru) УСТРОЙСТВО дл НАБИВКИ ЖЕЛОБОВ
KR850001180B1 (ko) 제강시 부원료 예열자동투입설비
KR100317965B1 (ko) 밀폐형노체의수직원통형내화관보수장치
JPS5831006A (ja) 高炉の連続出湯作業方法
JPH01176014A (ja) 高炉出銑樋の熱間補修方法
JPH01201405A (ja) 高炉中間改修方法