EP0364641A1 - Bearbeitung von metallurgischen Gefässen - Google Patents

Bearbeitung von metallurgischen Gefässen Download PDF

Info

Publication number
EP0364641A1
EP0364641A1 EP88309937A EP88309937A EP0364641A1 EP 0364641 A1 EP0364641 A1 EP 0364641A1 EP 88309937 A EP88309937 A EP 88309937A EP 88309937 A EP88309937 A EP 88309937A EP 0364641 A1 EP0364641 A1 EP 0364641A1
Authority
EP
European Patent Office
Prior art keywords
drill
furnace
tap hole
boom
guide
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.)
Withdrawn
Application number
EP88309937A
Other languages
English (en)
French (fr)
Inventor
Thomas Edward Durham
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.)
SHEERNESS STEEL Co PLC
Multiserv UK Ltd
Original Assignee
SHEERNESS STEEL Co PLC
Multiserv UK Ltd
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 SHEERNESS STEEL Co PLC, Multiserv UK Ltd filed Critical SHEERNESS STEEL Co PLC
Publication of EP0364641A1 publication Critical patent/EP0364641A1/de
Withdrawn legal-status Critical Current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
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools
    • 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
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging

Definitions

  • the invention relates to the treatment of metallurgical vessels, and in particular to the reconditioning of electric arc furnaces for reuse.
  • a method of drilling the tap hole in an electric arc furnace from outside the furnace, the tap hole being located a substantial height above the floor of the steel works comprising the steps of: locating a guide device on the outside of the furnace and adjacent the tap hole; locating adjacent the furnace a pivotally mounted boom, an elongate drill device being connected to the free end of the boom, the drill device including a drill head to be directed towards the tap hole and being configured to be supported by the guide device along at least a portion of its length; guiding the drill device by means of the guide device towards the tap hole, and rotating the drill head to drill out the tap hole.
  • the drill device is connected to the free end of the boom by a quick release coupling.
  • the drill device includes means by which the drill device may be rotated even if the device and the boom are axially misaligned, the means is preferably a pair of non-constant velocity joints.
  • the drill device comprises a drill head which is releasably connected to an elongate drill shank.
  • the guide device preferably comprises a pair of spaced apart collars including inner bearing surfaces and the drill shank rotates within the collars.
  • the guide device is preferably mounted in a frame which is pivotally mounted on one side of a launder which extends outwardly from the tap hole.
  • the drill device and the guide device form an assembly which may be moved into position so that the drill device is axially aligned with the tap hole and each furnace has its own assembly. In such a way the tap hole may be cleared simply by swinging the assembly into position, connecting the shank of the drill to the boom of a vehicle and rotating the drill head.
  • the invention provides a guide device including a frame to be attached to the outside of an electric arc furnace having a tap hole, the device including guide means arranged in use to receive a drill device and to support and guide the drill head thereof towards the tap hole to be treated.
  • an electric arc furnace 1 is mounted on a horizontal platform 2 above the floor 3 of a melt shop in a steel mill.
  • the furnace 1 comprises a wall 4 having an outer steel skin with water-cooled panels (not shown).
  • the furnace has a lid through which electrodes (not shown) pass.
  • the wall 4 includes a tap hole 5 which receives a replaceable tap hole plug or sleeve 6 made from a refractory material which is cemented in position using e.g a refractory cement.
  • the furnace 1 stands about 40 to 50 metres above the floor of the shop and can be tilted to the condition shown in Figure 1, so that the tap hole 5 is downwardly inclined.
  • a launder or spout 7 is mounted on the outside of the furnace 1 to convey molten metal from the tap hole 5 into another vessel e.g a 100 ton ladle.
  • the launder 7 is of generally channel cross section and is formed of a metal shell having an internal replaceable refractory lining 8.
  • a vehicle 10 of the type used to carry out a number of jobs around the steel mill has an endless track 11 and a chassis 12 on which is mounted a turntable 13.
  • the vehicle has a small turning circle so that it can move in a restricted space.
  • a boom 14 is pivotally mounted on the turntable 13 and is of telescopic construction so that its length may be increased by moving at least one inner component 15 outwardly.
  • the inner component 15 is arranged to be capable of rotation at a variable speed up to about 14 rpm. By the pivotal mounting, the boom can extend upwardly at an angle of about 45°.
  • the movement of the vehicle and the boom and allied parts are powered by a motor (not shown).
  • a drill device 16 best shown in Figures 2 and 3 is releasably connected to the free end of the inner component 15.
  • the drill device 16 comprises a drill head 17 which is releasably connected to a drill shank 18.
  • a transverse pin 19 extends through the shank 18 and is received in a bayonet socket 20 at one end of a coupling 21.
  • a collar 34 is secured to the drill shank 18 forwardly of the pin 19. The collar 34 flares outwardly towards the coupling 21 and ensures that, in use, the socket 20 is guided towards the pin 19 for engagement therewith.
  • the coupling 21 comprises a cylindrical sleeve which at one end engages the drill shank 18 and at the other end a pin 22 extends across the sleeve 21 and through a hole formed across one end of an elongate coupling element 23.
  • the further end of the element 23 is received within the free end of the inner component 15 of the boom 14, and a further pin 24 is fixed across the end of inner component 15 transversely to the pin 22.
  • the pin 24 extends through a hole formed across the element 23.
  • a guide device 25 supports the shank 18 of the drill along its length.
  • the guide device 25 comprises a pair of cylindrical collars 26 which each have an inner steel bearing surface 27.
  • the collars 26 are spaced apart by a cylindrical sleeve 28.
  • the shank 18 is mounted for rotation within the bearings 27.
  • the guide device 25 together with the drill device 16 is secured to a frame 29 which is pivotally mounted on one side of the launder 7.
  • the frame 29 is dimensioned to overlie the launder 7 and is arranged so that in use the guide device 25 is in axial alignment with the tap hole 5.
  • a pivot pin 30 is mounted in brackets 31 which are present at one side of the launder 7.
  • the pin 30 extends parallel to the launder 7 and through the frame 29.
  • a lifting eye 32 is present on the frame 29 whereby the frame may be swung into the position shown in Figure 4.
  • the drill device 16 is permanently mounted in the guide device 25.
  • the frame 29 is initially swung outwardly to the position indicated by the dotted lines 33 in Figure 4.
  • the furnace 1 is tilted into the position shown in Figure 1 by means of a crane or the like (not shown).
  • the frame 29 is then swung into the position shown in Figures 1 and 4 so that the drill is axially aligned with the tap hole 5.
  • the vehicle 10 is brought to the furnace 1 and the boom 14 is raised and the bayonet socket 20 is urged towards the collar 34 so that the socket 20 may be engaged with the shank 18 of the drill device 16.
  • the drill device 16 is then urged towards the tap hole 5 and is rotated to drill out the sleeve 6.
  • the drill device 16 is then disconnected from the boom 14 and swung out of the way. The debris is removed and a fresh sleeve 6 is inserted and cemented in place.
  • the floor space about the platform is restricted and the tap hole is high up, so that there is no room to locate the vehicle with the boom, drill device and tap hole in strict axial alignment.
  • Such alignment is not necessary in the case of the invention because the presence of the slip joint, i.e. the two non-constant velocity joints, enables the drill head 17 to be axially aligned with the tap hole 5 without aligning the shank 18 with the boom 14. As a result, rotation of the inner component 15 transmits rotation to the drill shank 18.
  • the method of the invention is simple to operate using readily available equipment.
  • the sleeves 6 of the tap hole 5 may be replaced quickly from the outside of the furnace 1.
  • the invention is not limited to the embodiment shown.
  • the frame 29 and/or the guide device 25 may be adapted to engage the furnace in the absence of a launder 7, or may form an assembly which is transported from furnace to furnace and may be located on a furnace, e.g by means of dowels or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP88309937A 1987-09-21 1988-10-21 Bearbeitung von metallurgischen Gefässen Withdrawn EP0364641A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878722156A GB8722156D0 (en) 1987-09-21 1987-09-21 Treatment of metallurgical vessels

Publications (1)

Publication Number Publication Date
EP0364641A1 true EP0364641A1 (de) 1990-04-25

Family

ID=10624122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88309937A Withdrawn EP0364641A1 (de) 1987-09-21 1988-10-21 Bearbeitung von metallurgischen Gefässen

Country Status (2)

Country Link
EP (1) EP0364641A1 (de)
GB (2) GB8722156D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408964B (de) * 1997-12-02 2002-04-25 Boehler Pneumatik Internat Gmb Verfahren und vorrichtung zur erneuerung der auskleidung einer abstichöffnung von metallurgischen gefässen
CN105043109A (zh) * 2015-08-18 2015-11-11 江西瑞林装备有限公司 用于冶金炉的捅打装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047934T3 (es) * 1989-06-09 1994-03-01 Boehler Pneumatik Int Gmbh Dispositivo para la extraccion de buzas o revestimientos de orificios de recipientes metalurgicos.
US6299830B2 (en) 1998-09-22 2001-10-09 Meltran, Inc. Apparatus and method for tapping a furnace
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
US3381762A (en) * 1965-11-26 1968-05-07 Ingersoll Rand Co Mobile breaker
DE2630232A1 (de) * 1975-10-04 1977-04-07 Nippon Carbide Kogyo Kk Automatische abstichmaschine fuer den abstich bei elektrischen hochoefen und oefen fuer die herstellung von legierungen o.dgl.
US4335530A (en) * 1980-05-06 1982-06-22 Stubblefield Jerry D Shoe sole construction
EP0115941A1 (de) * 1983-01-26 1984-08-15 M.D.S. Furnace Services Limited Ofenausbruchgerät
DE8803548U1 (de) * 1988-03-16 1988-05-05 Huette & Co Bohrtechnik Gmbh, 5960 Olpe, De

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856609A (en) * 1958-09-16 1960-12-21 Bernhard Dango Improvements relating to apparatus for opening the tap holes of furnaces
GB993365A (en) * 1962-03-17 1965-05-26 Westinghouse Air Brake Co Blast furnace tapping rig and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381762A (en) * 1965-11-26 1968-05-07 Ingersoll Rand Co Mobile breaker
DE2630232A1 (de) * 1975-10-04 1977-04-07 Nippon Carbide Kogyo Kk Automatische abstichmaschine fuer den abstich bei elektrischen hochoefen und oefen fuer die herstellung von legierungen o.dgl.
US4335530A (en) * 1980-05-06 1982-06-22 Stubblefield Jerry D Shoe sole construction
EP0115941A1 (de) * 1983-01-26 1984-08-15 M.D.S. Furnace Services Limited Ofenausbruchgerät
DE8803548U1 (de) * 1988-03-16 1988-05-05 Huette & Co Bohrtechnik Gmbh, 5960 Olpe, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 123 (C-344)[2180], 8th May 1986; & JP-A-60 248 808 (KUROSAKI YOUGIYOU K.K.) 09-12-1985 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408964B (de) * 1997-12-02 2002-04-25 Boehler Pneumatik Internat Gmb Verfahren und vorrichtung zur erneuerung der auskleidung einer abstichöffnung von metallurgischen gefässen
CN105043109A (zh) * 2015-08-18 2015-11-11 江西瑞林装备有限公司 用于冶金炉的捅打装置
CN105043109B (zh) * 2015-08-18 2017-04-19 江西瑞林装备有限公司 用于冶金炉的捅打装置

Also Published As

Publication number Publication date
GB2210151A (en) 1989-06-01
GB2210151B (en) 1991-05-01
GB8722156D0 (en) 1987-10-28
GB8822059D0 (en) 1988-10-19

Similar Documents

Publication Publication Date Title
CN101553334B (zh) 用于维护安装在熔融金属的容器注口上的滑动水口的设备
DE2529741C2 (de) Fahrbare Einrichtung zum Aufspritzen eines nassen feuerfesten Materials
US20090235953A1 (en) Methods for removing concrete accretions from mixing drum
EP0364641A1 (de) Bearbeitung von metallurgischen Gefässen
EP0984132A3 (de) System und Verfahren zur automatischen Steuerung einer Einrichtung zur Handhabung von Gestängen für eine Horizontalbohrmachine
US4747582A (en) Manipulator at furnaces
US20090065984A1 (en) Smelting apparatus
US4779798A (en) Gunning apparatus
US5735647A (en) Tap hole drill for steelmaking vessel
US4087084A (en) Apparatus for changing blast furnace tuyeres
JPH04214815A (ja) 冶金容器にランスを設置し除去するための装置とその方法
CA1297273C (en) Treatment of refractory linings
US4313565A (en) Apparatus for the projection of refractory and other material particularly for the repair of the linings of metallurgical plant
JP3113837U (ja) スラグ分離除去装置
EP0115941A1 (de) Ofenausbruchgerät
US4669707A (en) Apparatus and process for tapping molten metal furnaces using a rotary percussion mill
US3700347A (en) Universal tap jack
US3175239A (en) Lance carriage mounted pneumatic jack hammer
SK283126B6 (sk) Zariadenie na otvorenie a uzavretie odpichového otvoru v metalurgickej peci
KR100312129B1 (ko) 체크볼 자동 투입장치
JP2568395Y2 (ja) 電気炉の偏心炉底出鋼口詰まり物除去装置
CN210711619U (zh) 一种具有清渣装置的铁水预处理设备
SU1033547A1 (ru) Машина дл вскрыти чугунной летки доменной печи
EP0242112A1 (de) Automatischer Flammspritzauskleide-Apparat mit einem einsteckbaren Flammspritzrohr
JPS5956512A (ja) 溶融金属容器のスリ−ブ煉瓦交換装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR IT LI LU NL SE

17P Request for examination filed

Effective date: 19901023

17Q First examination report despatched

Effective date: 19911007

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920218