EP0559007B1 - Vorrichtung zur Aufbereitung und Zuführung einer monolithischen keramischen Masse in ein metallurgisches Schmelzgefäss - Google Patents

Vorrichtung zur Aufbereitung und Zuführung einer monolithischen keramischen Masse in ein metallurgisches Schmelzgefäss Download PDF

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Publication number
EP0559007B1
EP0559007B1 EP93102516A EP93102516A EP0559007B1 EP 0559007 B1 EP0559007 B1 EP 0559007B1 EP 93102516 A EP93102516 A EP 93102516A EP 93102516 A EP93102516 A EP 93102516A EP 0559007 B1 EP0559007 B1 EP 0559007B1
Authority
EP
European Patent Office
Prior art keywords
accordance
mixer
metallurgical vessel
feeding
feeding device
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
EP93102516A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0559007A1 (de
Inventor
Alexander Dipl.-Ing. Retschnig
Manfred Slamenik
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.)
Veitsch Radex GmbH and Co OG
Original Assignee
Veitsch Radex GmbH and Co OG
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Filing date
Publication date
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Publication of EP0559007A1 publication Critical patent/EP0559007A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • B22D41/023—Apparatus used for making or repairing linings

Definitions

  • the invention relates to a device for preparing and feeding a monolithic ceramic mass into a metallurgical melting vessel with a mixer and a feed device.
  • a device for example from EP 0 326 461 B1.
  • the (dry) mixture components of the mass are fed from silos into a mixer, where they are mixed with water and fed to a spraying device which has a lance shape, the mass being sprayed onto the wall and the bottom of the metallurgical vessel via the lance.
  • the known device has a relatively complicated structure and requires a considerable outlay in terms of device technology.
  • a generic device is also known from Taikabutsu Overseas Vol. 1, 49, 51, in which processing takes place outside the area of the metallurgical melting vessel.
  • the finished mass is conveyed via a type of shovel excavator into the area above the pan, which is covered with a cone-shaped attachment so that the mass, as soon as the shovel has been opened, is laterally moved over the cone into an annular area between a template and the inner wall of the Pan can flow.
  • a considerable expenditure on device technology is necessary.
  • the invention is based on the object of demonstrating a possibility, such as preparation and feeding a monolithic ceramic mass in a metallurgical melting vessel can be made simpler, more efficient and safer.
  • the invention is based on the knowledge that this goal can be achieved in particular by designing the preparation and feeding devices together in the form of a compact unit and arranging this directly above the metallurgical melting vessel.
  • This has the direct advantage that longer transport routes are eliminated. There is no fear of segregation, such as can occur with external processing according to the state of the art, because the mass is processed directly above the metallurgical vessel and brought to the destination in the shortest possible time. Shorter transport routes also mean less cleaning effort.
  • the viscosity of the mass can be set specifically and can be maintained in a defined manner on the (short) transport route to the destination.
  • the compact unit can be assembled in a variety of ways.
  • the mixer should have a receiving device for attachment to a support frame.
  • the support frame thus serves directly or indirectly to position the mixer (the compact unit) in the area of the opening mouth of the metallurgical vessel.
  • the receiving device in the manner of a turntable, which can preferably be driven by a motor. It is particularly favorable if the compact unit can be rotated about a shaft that runs coaxially to the central longitudinal axis of the metallurgical vessel.
  • the support frame can be attached directly to the mixer (on the compact unit). It is possible to arrange the support frame itself on a template that can be used at a distance from the wall of the metallurgical vessel, so that the template and compact unit are inserted into this, for example, prior to the delivery of a pan. This embodiment is particularly useful when a large number of structurally identical metallurgical vessels are available in a plant.
  • the compact unit can be attached to any other type of support frame.
  • the support frame for example, have the shape of a tripod, which is either placed on the bottom of the pan or overlaps the entire pan.
  • the mixer itself can be a compulsory mixer, which is designed, for example, with a mixing and transport screw, via which the processed mass is forcibly transported via the feed device and introduced behind a template into the annular area between the template and the wall of the metallurgical vessel.
  • a forced mixing or with such a forced transport the feed device can easily run horizontally.
  • an advantageous embodiment of the invention provides for the feed device to be designed to be longitudinally adjustable.
  • the feed device is preferably designed telescopically, so that the filling head can be brought to the desired position at the free end of the feed device.
  • the filling head can be inclined downwards, towards the bottom of the metallurgical vessel, so that the mass flow is introduced vertically into the annular space between the template and the wall of the metallurgical vessel.
  • one embodiment of the invention provides for a funnel-shaped receptacle to be arranged above the mixer.
  • the filling can then take place, for example, using so-called big bags, but also in any other known manner, for example using feed belts.
  • the main advantage of the device is that the mixture components (including the mixing water and any additives and additives) are introduced directly into the mixer and this is in turn arranged directly above the metallurgical vessel, so that segregation phenomena are excluded.
  • the dry starting material reaches the mixing chamber in the shortest possible way, is mixed with water there and directly to the destination immediately after homogenization. It is readily apparent that the device as a compact unit requires only a small amount of equipment and that cleaning work is also significantly reduced compared to known devices.
  • the device is also easy to transport and can be used for a wide variety of metallurgical vessels in various dimensions.
  • Figures 1, 2 show the upper portion of a ladle 10, which has a circular cross section.
  • a template 12 Spaced from the wall 10a of the pan 10 is a template 12 (known per se) which stands on the bottom of the pan 10 (not shown).
  • annular space 14 is formed between the wall 10a of the pan 10 and the template 12, which is to be filled here with a thixotropic ceramic vibration compound.
  • the template 12 has projections 16 on the inside at the upper end, on each of which lie vibration and sound-absorbing bodies 18 made of a deformable material.
  • the bodies 18 serve to accommodate a total of three arms 20 of a support frame shown overall with the reference numeral 22, the arms 20 running in a star shape relative to one another and being articulated centrally on a plate 24.
  • a shaft 27 extends vertically upward from the plate 24, on which a turntable 26 is seated.
  • the turntable is motor-driven, the drive unit not being shown here for reasons of clarity.
  • a compact unit 28 is now attached to the turntable 26, which has a mixer 30, a feed device 32 and a receiving funnel 34.
  • the receiving funnel 34 is asymmetrical and opens into a connecting piece 36 in the upper section of the mixer 30.
  • the feed device 32 extends from a lateral outlet area 38 of the mixer 30 and extends essentially horizontally and radially to the central longitudinal axis M of the pan 10 up to the area above the annular space 14, where a filling head 40, which is open at the bottom, contacts the feed device 32 connects.
  • a feed device 42 is provided for a water connection (not shown).
  • the device works as follows: The (dry) mixture components of the vibration mass, optionally supplemented with additives and additives, are filled into the funnel 34, optionally as a finished dry mixture. This is done particularly easily by using so-called big bags. Such a big bag is symbolically represented in FIG. 1 by reference numeral 44.
  • the dry mixture reaches the area of the mixer 30 via the funnel 34, where mixing water is added.
  • the mixer 30 is designed here as a compulsory mixer and in this respect comprises a transport screw 46 (symbolically represented by the reference symbol 46) which extends over the outlet area 38 through the tubular one Feed device 32 extends into the area of the filling head 40.
  • the dressed vibrating mass is transported along the screw conveyor to the filling head 40 and from there reaches the annular space 14 downwards.
  • the compact unit 28 is pivoted by a total of 360 ° with the aid of the motor-driven turntable 26, as can be seen in FIG. 2, so that the annular space 14 can gradually be completely filled with the vibration mass.
  • the feed device 32 in a telescopic manner, so that its length can be changed, so that it can also be adapted to metallurgical vessels of different geometries. It is also possible to design the feed device 32 inclined. Instead of a forced supply of the vibration mass via a screw conveyor, the transport can also be achieved by designing the feed device as a vibration channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Furnace Charging Or Discharging (AREA)
EP93102516A 1992-03-05 1993-02-18 Vorrichtung zur Aufbereitung und Zuführung einer monolithischen keramischen Masse in ein metallurgisches Schmelzgefäss Expired - Lifetime EP0559007B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0041592A AT399464B (de) 1992-03-05 1992-03-05 Vorrichtung zur aufbereitung und zuführung einer monolithischen keramischen masse in ein metallurgisches schmelzgefäss
AT415/92 1992-03-05

Publications (2)

Publication Number Publication Date
EP0559007A1 EP0559007A1 (de) 1993-09-08
EP0559007B1 true EP0559007B1 (de) 1994-09-21

Family

ID=3490017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102516A Expired - Lifetime EP0559007B1 (de) 1992-03-05 1993-02-18 Vorrichtung zur Aufbereitung und Zuführung einer monolithischen keramischen Masse in ein metallurgisches Schmelzgefäss

Country Status (6)

Country Link
US (1) US5368459A (da)
EP (1) EP0559007B1 (da)
AT (2) AT399464B (da)
CA (1) CA2090898C (da)
DE (1) DE59300011D1 (da)
DK (1) DK0559007T3 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI117279B (fi) * 2003-09-18 2006-08-31 Bet Ker Oy Menetelmä ja laite metallurgisen astian vuoraamiseksi
CN101020334B (zh) * 2006-12-31 2011-01-05 西安重型机械研究所 中间包耐火衬整体浇灌系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837910A (en) * 1953-06-22 1958-06-10 Evart R Steed Apparatus for building circular structures
US3259672A (en) * 1962-10-02 1966-07-05 Sharon Steel Corp Method of forming and maintaining refractory bottoms of open hearth furnaces for the manufacture of steel
CH414485A (de) * 1963-09-04 1966-05-31 Firestone Prod Düsenkopf mit Radialdüse
PL79533B1 (da) * 1968-11-07 1975-06-30
DE2041639C3 (de) * 1970-08-21 1973-10-11 Wostotschnyj Ni I Pi Ogneuporn Vorrichtungen zum Auftragen von pulverfoermigem Material auf Schalungen bzw. auf die Oberflaeche von Einrichtungen
US3779679A (en) * 1971-08-03 1973-12-18 Pettibone Corp Apparatus for lining the walls of metallurgical vessels with prepared refractory material
US3799445A (en) * 1973-04-30 1974-03-26 Pfizer Vertical remote-controlled refractory gunning apparatus
US3917170A (en) * 1974-07-19 1975-11-04 Quigley Co Mobile refractory gunning apparatus
US4218050A (en) * 1974-11-22 1980-08-19 Spribag Aktiengesellschaft Apparatus and methods for automatically lining containers, especially casting ladles
JPS53117005A (en) * 1977-03-23 1978-10-13 Fuaizaa Kuiguree Kk Spray apparatus used for repairing fireeresistant lining
DE3214990C2 (de) * 1981-04-23 1986-09-25 Nippon Steel Corp., Tokio/Tokyo Vorrichtung zum Reparieren der Auskleidung von Hochöfen
JPS57187585A (en) * 1981-05-15 1982-11-18 Nippon Kokan Kk Distributor for casting fire-resistant material and its execution method
JPS59119177A (ja) * 1982-12-27 1984-07-10 日本鋼管株式会社 炉の熱間吹付補修装置
GB2144054B (en) * 1983-07-30 1986-07-30 Glaverbel Apparatus for and method of spraying for forming refractories
US4602771A (en) * 1984-11-09 1986-07-29 Narco Investors, Inc. Apparatus for casting refractory compositions
US4690327A (en) * 1986-01-31 1987-09-01 Godo Steel, Ltd. Hot gunning robot for furnace lining
FR2619323B2 (fr) * 1987-04-03 1989-12-29 Daussan & Co Procede et installation pour projeter un revetement isolant et refractaire multicouche et revetement ainsi obtenu
FR2625924B1 (fr) * 1988-01-20 1990-05-11 Daussan & Co Dispositif pour projeter un revetement sur la surface interieure d'un recipient de transvasement de metal liquide et procede s'y rapportant
FR2646367B1 (fr) * 1989-04-26 1994-04-01 Daussan Cie Procede et installation pour realiser un revetement sur les parois interieures d'un recipient metallurgique

Also Published As

Publication number Publication date
ATA41592A (de) 1994-10-15
CA2090898A1 (en) 1993-09-06
DK0559007T3 (da) 1995-03-06
CA2090898C (en) 1995-11-14
DE59300011D1 (de) 1994-10-27
EP0559007A1 (de) 1993-09-08
AT399464B (de) 1995-05-26
ATE111790T1 (de) 1994-10-15
US5368459A (en) 1994-11-29

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