EP0327833B1 - Verfahren und Vorrichtung zum Öffnen des Stichlochs von Öfen - Google Patents

Verfahren und Vorrichtung zum Öffnen des Stichlochs von Öfen Download PDF

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Publication number
EP0327833B1
EP0327833B1 EP89100651A EP89100651A EP0327833B1 EP 0327833 B1 EP0327833 B1 EP 0327833B1 EP 89100651 A EP89100651 A EP 89100651A EP 89100651 A EP89100651 A EP 89100651A EP 0327833 B1 EP0327833 B1 EP 0327833B1
Authority
EP
European Patent Office
Prior art keywords
rod
tapping
furnace
tap hole
sleeve
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
EP89100651A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0327833A1 (de
Inventor
Werner Dipl.-Ing. Schneider
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.)
Dango and Dienenthal Maschinenbau GmbH
Original Assignee
Dango and Dienenthal Maschinenbau GmbH
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 Dango and Dienenthal Maschinenbau GmbH filed Critical Dango and Dienenthal Maschinenbau GmbH
Publication of EP0327833A1 publication Critical patent/EP0327833A1/de
Application granted granted Critical
Publication of EP0327833B1 publication Critical patent/EP0327833B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes

Definitions

  • the invention relates to a method and a device for opening a tap hole of ovens closed by a stuffing and a tapping rod.
  • a tap hole When operating blast furnaces, but also on shaft furnaces for direct reduction, boilers, e.g. In coal gasification, ladle furnaces or downhole furnaces for melting ferro-alloys, non-ferrous metals or non-metals, a tap hole must be opened after a certain time so that the melting material or by-products such as slags can flow off.
  • the tapping sequence is between half an hour and several days, depending on the different processes and melting times. After tapping, the stitch holes are closed again.
  • EP-OS 41 942 For alternately closing and opening the tap hole of blast furnaces, it is known from EP-OS 41 942 to strike a rod through the not yet fully hardened stuffing compound a few minutes after plugging the tap hole with a jackhammer until the rod tip reaches the interior of the blast furnace , ie the melt is reached.
  • tap hole drilling machine It is known to use a tap hole drilling machine to pull out the tapping rod. These are standard drilling machines that have a hammer for driving the tapping bar. To pull out the tapping rod, these tap hole drilling machines must be equipped with a second hammer that strikes against the direction of the hammer. In addition, a gripper with remote control is required to grasp the tapping bar without an operator having to approach the pig iron gutter. The hammers for driving in and pulling out the tapping rod together with the gripper form a compact device which is very expensive due to its necessarily space-saving construction and is also prone to failure.
  • the invention has for its object to provide a method and an apparatus with which the disadvantages mentioned when opening the tap hole can be avoided.
  • tapping rod is hammered into the interior of the furnace and melted there. All that is required is a device that moves the tapping rod into the furnace.
  • the invention is based on the idea of pressing the tapping rod inwards through the tap hole channel to open the tap hole.
  • a conventional tap hole drilling machine with a hammer can be used, i.e. no expensive special construction is required, such as for pulling out the tapping bar.
  • a guide piece can preferably be detachably arranged on the front end of the beater bar of a beating machine.
  • the guide piece for example a sleeve or a tube, can be attached by a welding spot or glued to the impact rod; according to a further proposal, it is arranged clampable on the impact bar.
  • the face of the beater bar lies against the end of the tapping bar facing away from the interior of the furnace, which is overlapped by the guide piece.
  • the guide is released piece and slides on the bumper.
  • the guidance with self-releasing clamping force or self-releasing fastening enables in a surprisingly simple manner, in particular, the tapping of the tapping rod into the interior of the furnace without it being necessary to firmly couple the tapping rod and the striking rod to one another.
  • a coupling firmly connecting the tapping rod and the impact rod one would necessarily have to accept the fact that the coupling head melts away when immersed in the melt.
  • a fixed connection by means of a coupling head would have to be dimensioned such that the coupling - in order to be able to enter the tap hole channel - is smaller than the tap hole.
  • radially acting springs preferably either at least one leaf spring arranged in the clamping guide designed as a sleeve or at least one pair of spring bars, which advantageously has two spring bars arranged in a plane at a distance from one another, a guide which is clamped at the front end of the beater bar can be used in an uncoupled manner , Realize loose contact of the end faces of the two rods.
  • the clamping guide which is preferably designed as a sleeve with a centering bore and a clamp, on the one hand ensures the cohesion of the loose coupling assembly of the rods by the centering bore engaging over the rear part of the end of the tapping rod, which end protrudes mostly from the furnace, and on the other hand guarantees guiding of the impact rod during the total thrust.
  • a brake block loaded by a spring could also serve to clamp the impact rod. It must always be ensured with the clamping guide that the sleeve has a certain persistence on the beater bar, but shifts when a certain clamping force is exceeded on the beater bar.
  • the tapping rod which generally protrudes over the outer wall of the furnace, is increasingly pushed deeper into the interior of the furnace by the impact rod.
  • an axial counterforce exceeds the force of the clamp, so that the sleeve subsequently, i.e. as the impact rod penetrates further into the tap hole channel on the impact rod without impeding further propulsion.
  • the sleeve always fulfills a task leading the bumper.
  • the beater bar can preferably be arranged in a drill carriage and coupled with a hammer.
  • the drill carriage which is present anyway, can also be used to drive in the tapping rod.
  • the guide sleeve lies with its end face facing away from the furnace against a stop of the drill carriage; when the beater bar is pulled back further, the force of the clamp of the sleeve is overcome and the beater bar slides through the guide sleeve so that the sleeve is in the retracted end position of the beater bar again at the front end of the bar.
  • a drill carriage 1 with a percussion hammer 3 slidably arranged in a guide and moved by a feed motor 2, which is connected via a coupling 4 to an impact bar 5 is connected, according to FIG. 1, in an operating position before opening a tapping channel 10 which penetrates the brickwork 6 into the interior 8 of a blast furnace 9 filled with melt 7.
  • the tapping channel 10 is closed with a stuffing material 11 and an embedded tapping rod 12 ; since the stuffing 11 is an integral part of the lining 6 after curing, FIGS. 2 to 4 are shown without stuffing.
  • the tapping rod 12 projects with its free end out of the stuffing material or the tap hole.
  • a guide sleeve 13 is clamped by means of a clamp 14.
  • the end face of the guide sleeve 13 facing the tapping rod 12 is provided with an inwardly tapering center hole 15.
  • the percussion hammer 3 When the percussion hammer 3 is moved forward in the feed direction 16 by means of the motor 2, the front end face of the striking bar 5 lies against the end face of the projecting end of the tapping bar 12; this alignment of the two rods 5, 12 is supported by the centering hole of the guide sleeve 13 which overlaps the end of the tapping rod 12.
  • the percussion hammer 3 for example a reversible percussion piston (not shown) which transmits its impact energy to the percussion rod 5, drives the percussion rod 5 and correspondingly the tapping rod 12 increasingly further in the feed direction 16 when the tap hole 10 is opened.
  • the guide sleeve 13 In the advance position shown in FIG. 2, the guide sleeve 13 is in contact with the furnace 9; the dashed part of the tapping rod 12 is already in the melt 7 smashed and melted away. Because of the abutment on the lining 6, the guide sleeve 13 can no longer move forward when the impact rod 5 is advanced; rather, the effect of the clamp 14 is omitted, and the striking rod 5 can slide through the guide sleeve 13 and the tapping rod 12 can completely impact the interior 8 of the furnace 9. This position with the tapping rod 12 shown in dashed lines and completely hammered into the molten metal 7 is shown in FIG. 3.
  • the impact hammer 3 is then moved in the direction of arrow 17 and pulls the coupled impact rod 5 out of the tap hole channel 10 until the tap hole has become free, so that the melt 7 can flow out into the tapping channel 18 arranged below the channel (cf. Fig. 4).
  • the guide sleeve 13 hits a stop 19, e.g. a heat shield, the drill carriage 1; this stop position limits the movement of the guide sleeve 13 when the beater bar 5 is retracted and overcomes the clamping due to the counterforce which arises, so that the beater bar 5 moves through the guide sleeve 13.
  • a leaf spring 21 extending in the direction of the longitudinal axis of the striking rod 5 is arranged in a recess 29 in the sleeve 13 for clamping the striking rod 5.
  • the leaf spring 21 which is not loaded in the starting position (see FIG. 6), bulges out into the through bore 22 of the sleeve 13 for the striking rod 5.
  • the leaf spring 21 is acted upon radially when the striker 5 is inserted into the bore 22 and is preloaded so that it finally assumes the tensioned position shown in solid line in FIG. 5, in which it exerts a clamping force on the striker 5.
  • the 8 to 10 has two spring rods 24, 25 arranged in radial recesses 23 of the sleeve 13 for clamping the impact rod 5.
  • the rods 24, 25 extend transversely to the longitudinal axis of the impact rod 5 or the through bore 22 in one plane at a distance from each other which is smaller than the diameter of the bore 22 (FIG. 9).
  • the spring bars 24, 25 are pressed radially outward by the beater bar 5 (FIG. 10) and are preloaded so that they clamp the beater bar 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blast Furnaces (AREA)
  • Basic Packing Technique (AREA)
  • Confectionery (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP89100651A 1988-02-06 1989-01-16 Verfahren und Vorrichtung zum Öffnen des Stichlochs von Öfen Expired - Lifetime EP0327833B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3803625 1988-02-06
DE3803625A DE3803625A1 (de) 1988-02-06 1988-02-06 Verfahren und vorrichtung zum oeffnen des stichlochs von oefen

Publications (2)

Publication Number Publication Date
EP0327833A1 EP0327833A1 (de) 1989-08-16
EP0327833B1 true EP0327833B1 (de) 1992-07-22

Family

ID=6346800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100651A Expired - Lifetime EP0327833B1 (de) 1988-02-06 1989-01-16 Verfahren und Vorrichtung zum Öffnen des Stichlochs von Öfen

Country Status (9)

Country Link
US (1) US4960379A (es)
EP (1) EP0327833B1 (es)
JP (1) JPH0222408A (es)
KR (1) KR930001005B1 (es)
AU (1) AU603726B2 (es)
BR (1) BR8900501A (es)
CA (1) CA1334336C (es)
DE (2) DE3803625A1 (es)
ES (1) ES2010162T3 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU87190A1 (fr) * 1988-04-06 1989-11-14 Wurth Paul Sa Machine de percage de trous de coulee d'un four a cuve
NL8902381A (nl) * 1989-09-25 1991-04-16 Hoogovens Groep Bv Schachtoven.
NL9000556A (nl) * 1990-03-12 1991-10-01 Hoogovens Groep Bv Werkwijze voor het vervaardigen van ruwijzer.
FR2664291B1 (fr) * 1990-07-05 1992-09-18 Boulonnais Terres Refractaires Dispositif pour la refection rapide d'un placard de haut-fourneau.
DE4106537A1 (de) * 1991-03-01 1992-09-03 Degussa Verfahren zum teilkontinuierlichen schmelzen keramischen materials in induktionsschmelzoefen mit sinterkrustentiegel, ein hierfuer geeigneter ofen und vorrichtung zum periodischen schmelzanstich
LU88060A1 (fr) * 1992-01-27 1993-08-17 Paul Wurth S.A. Machine de percage d'un trou de coulee d'un four a cuve
FI925647A (fi) * 1992-12-11 1994-06-12 Outokumpu Chrome Oy Kaasuputken syöttölaite sulaa materiaalia sisältävään uuniin
LU88203A1 (fr) * 1992-12-16 1994-09-09 Wurth Paul Sa Machine combinée pour le perçage et le bouchage d'un trou de coulée d'un four à cuve
AT407919B (de) * 1998-01-19 2001-07-25 Boehler Pneumatik Internat Gmb Pneumatisch oder hydraulisch betreibbarer hammer und verwendung des hammers zum offenstellen oder zum verschliessen einer abstichöffnung eines metallurgischen gefässes
US5979340A (en) * 1998-06-05 1999-11-09 The Board Of Regents Of The University Of Texas System Pole inserting robotic mechanism for accessing the interior of a harsh enclosure
US6299830B2 (en) 1998-09-22 2001-10-09 Meltran, Inc. Apparatus and method for tapping a furnace
CN102686966B (zh) * 2009-11-18 2014-08-27 斯特拉塔技术有限公司 从熔炉中去除炉渣的方法
JP5785838B2 (ja) * 2011-09-27 2015-09-30 新日鉄住金エンジニアリング株式会社 閉塞開孔方法および閉塞開孔装置
JP6153092B2 (ja) * 2014-08-22 2017-06-28 Ｊｆｅスチール株式会社 出銑口開孔機
DE102016110548B4 (de) * 2016-06-08 2018-02-15 Wengeler & Kalthoff Hammerwerke Gmbh & Co Kg Bohrwerkzeug für eine Bohrmaschine zum Aufbohren von Stichlöchern von Hochöfen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2093292A5 (en) * 1970-06-09 1972-01-28 Atlas Copco France Furnace tapping tool - for molten metal
NL148939B (nl) * 1970-12-18 1976-03-15 Koninklijke Hoogovens En Staal Bodem van een schachtoven, in het bijzonder van een hoogoven voor ijzerproduktie.
JPS5245427B2 (es) * 1974-03-15 1977-11-16
US3990836A (en) * 1975-05-05 1976-11-09 Bricmont & Associates, Inc. Hearth cleaning apparatus
JPS5698410A (en) * 1980-01-11 1981-08-07 Kawasaki Steel Corp Sealing method of tap hole of blast furnace
AT365651B (de) * 1980-06-06 1982-02-10 Ver Edelstahlwerke Ag Verfahren zum wechselweisen verschliessen und oeffnen des stichloches metallurgischer oefen, insbesondere von hochoefen
LU83477A1 (fr) * 1981-07-08 1983-04-06 Wurth Paul Sa Dispositif d'accouplement d'une tige de percage du trou de coulee d'un four a cuve a l'outil de travail d'une machine de percage
LU83917A1 (fr) * 1982-02-03 1983-09-02 Wurth Paul Sa Dispositif d'accouplement d'une tige de percage du trou de coulee d'un four a cuve a l'outil de travail d'une machine de percage
JPS58199807A (ja) * 1982-05-17 1983-11-21 Kobe Steel Ltd 高炉出銑口の閉塞方法
FR2544332B1 (fr) * 1983-04-12 1985-08-09 Solmer Dispositif de debouchage de haut-fourneau par extraction de barre
NL8301862A (nl) * 1983-05-26 1984-12-17 Hoogovens Groep Bv Tapgatconstructie in de haard van een schachtoven.
DE3339127A1 (de) * 1983-10-28 1985-05-09 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Greifvorrichtung fuer in das stichloch von metallurgischen oefen eintreibbare und aus diesem herausziehbare stangen, insbesondere abstichstangen

Also Published As

Publication number Publication date
ES2010162A4 (es) 1989-11-01
DE3803625A1 (de) 1989-08-17
JPH0222408A (ja) 1990-01-25
EP0327833A1 (de) 1989-08-16
BR8900501A (pt) 1989-10-03
JPH0353362B2 (es) 1991-08-14
ES2010162T3 (es) 1993-03-16
DE3803625C2 (es) 1992-05-07
KR890013448A (ko) 1989-09-23
DE58901856D1 (de) 1992-08-27
AU2959989A (en) 1990-01-25
KR930001005B1 (ko) 1993-02-12
CA1334336C (en) 1995-02-14
AU603726B2 (en) 1990-11-22
US4960379A (en) 1990-10-02

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