EP0741854A1 - Verfahren und vorrichtung zur herstellung einer monolithischen feuerfesten auskleidung von stahlgiesspfannen - Google Patents
Verfahren und vorrichtung zur herstellung einer monolithischen feuerfesten auskleidung von stahlgiesspfannenInfo
- Publication number
- EP0741854A1 EP0741854A1 EP95908262A EP95908262A EP0741854A1 EP 0741854 A1 EP0741854 A1 EP 0741854A1 EP 95908262 A EP95908262 A EP 95908262A EP 95908262 A EP95908262 A EP 95908262A EP 0741854 A1 EP0741854 A1 EP 0741854A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- template
- lining
- wall
- refractory
- sealing body
- 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.)
- Granted
Links
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 method for producing a refractory monolithic lining of the wall and bottom of a pan for casting and treating steel or similar metallurgical vessels and a device for performing the method.
- the refractory lining of metallurgical vessels usually consists of permanent feed and working feed.
- permanent lining fireclay bricks or insulating bricks are usually applied in one or more layers to the inside of the steel jacket of the vessel.
- the working chuck is applied to it, which is later in contact with the molten steel and is removed by erosion, in particular when the metal bath is moved, and by chemical attack, in particular by the slag floating on the molten steel.
- the working lining can be bricked with refractory bricks or brought in as a refractory mass that solidifies into a monolithic layer. Combinations of these two types of delivery are also possible.
- the monolithic delivery often proves to be cheaper than the brick delivery. Since the wear is usually different in different wall and floor areas of the pan, the infeed is often divided into zones that have different strengths Have working feed and / or differently resistant refractories.
- the working feed is either completely broken out and renewed at the end of the pan journey or repaired in the affected zones if there is only partial premature wear.
- the floor often wears out faster than the wall, especially in the area of the pouring jet impact and in the vicinity of sink blocks. Then the soil must be broken out and renewed several times during a pan trip.
- a delivery method is known in which the working feed of steel ladles is delivered with refractory concrete.
- a template is required, which specifies the inner contour of the ready-mixed working chuck.
- the mass is poured into the gap between the permanent feed and the template.
- the floor and wall lining can be concreted in one step. In this way, the floor and wall form a single monolithic lining.
- Mixers, pumps and internal vibrators are usually used to carry out the casting process.
- the casting over a period of, for example, three hours must be carried out continuously in order to avoid possible hardening in the surface area.
- the vibrators are intended to prevent cavities and cavities from forming in order to achieve good compaction. If, for example, the mass has set after 24 hours, the template can be pulled out again.
- the object of the present invention is therefore to provide the floor lining in a monolithically supplied steel casting and treatment ladle in such a way that the floor lining can be broken out between the wall lining without damaging wall areas in an economically advantageous manner.
- a tubular, inflatable sealing body attached to the lower part of the template is inflated in such a way that it seals the template up to the height corresponding to the desired floor thickness.
- the sealing body is relaxed and removed again.
- the refractory casting compound is then introduced into the floor area to the desired height.
- An advantageous embodiment of a device suitable for carrying out the method consists in that the template stands on three refractory bodies (1) distributed over the circumference, which have the same height as the desired thickness for the floor lining. In the spaces between these refractory bodies, tubular sealing bodies (2) are attached to the lower edge of the template, which can be inflated and removed again.
- the wall lining is first poured, the sealing bodies preventing the mass from running into the ground.
- the wall lining is poured to the edge of the pan, the lower part of the lining that touches the sealing body begins to solidify slightly starting from the surface, so that the sealing body can be relaxed and removed.
- the floor is poured to the predetermined height. In this way, the floor lining no longer forms a monolith with the wall lining, but a predetermined breaking edge is created. Since the formation of gaps is avoided, there is no later infiltration of molten steel when the pan is used.
- the setting time which can usually be up to ten hours, the template is pulled out of the pan and the pan lining is heated to operating temperature.
- FIG. 1 shows the perspective view of a steel casting and treatment pan with (from the outside inwards) the steel jacket, the permanent lining delivered with stones, the working lining delivered in the wall and the template (4).
- the bottom of the pan has not yet been clogged with monolithic mass. They are a rinsing stone and a tap hole recognizable as well as a cast finished component made of high-alumina material as a baffle plate on the permanent lining.
- the template stands on refractory support bodies (1) that have the same height as the perforated blocks. At the bottom of the template (4) there is a strip (3) on the inside, to which tubular, inflatable sealing bodies (2) made of flexible material are attached.
- the sealing body (2) can consist, for example, of plastic-reinforced rubber.
- Fig. 2 shows in longitudinal section through the pan the area at the lower end of the template (4).
- a ring is attached slightly above the lower edge of the template (4) and carries a bar (3) on the inside.
- a tubular sealing body (2) made of flexible material is attached to the strip (3). To protect against damage, the sealing body (2) is provided on the side facing the refractory material with a protective strip (5) made of tear-resistant, flexible material.
- Fig. 3 shows a top view of the pan bottom. Shown in the sectional view is the refractory support body (1), which can be designed, for example, as a truncated cone, and two sealing bodies (2) which are cut in such a way that they are sufficiently close to the support body (1) in the inflated state without further aids.
- the refractory support body (1) which can be designed, for example, as a truncated cone, and two sealing bodies (2) which are cut in such a way that they are sufficiently close to the support body (1) in the inflated state without further aids.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4403270A DE4403270C2 (de) | 1994-02-03 | 1994-02-03 | Verfahren und Vorrichtung zur Herstellung einer monolithischen feuerfesten Auskleidung von Stahlgießpfannen |
DE4403270 | 1994-02-03 | ||
PCT/EP1995/000399 WO1995021364A1 (de) | 1994-02-03 | 1995-02-03 | Verfahren und vorrichtung zur herstellung einer monolithischen feuerfesten auskleidung von stahlgiesspfannen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0741854A1 true EP0741854A1 (de) | 1996-11-13 |
EP0741854B1 EP0741854B1 (de) | 1998-04-15 |
EP0741854B2 EP0741854B2 (de) | 2002-08-28 |
Family
ID=6509356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95908262A Expired - Lifetime EP0741854B2 (de) | 1994-02-03 | 1995-02-03 | Verfahren und vorrichtung zur herstellung einer monolithischen feuerfesten auskleidung von stahlgiesspfannen |
Country Status (9)
Country | Link |
---|---|
US (1) | US5993703A (de) |
EP (1) | EP0741854B2 (de) |
CZ (1) | CZ284816B6 (de) |
DE (2) | DE4403270C2 (de) |
ES (1) | ES2116728T5 (de) |
FI (1) | FI111878B (de) |
PL (1) | PL178274B1 (de) |
WO (1) | WO1995021364A1 (de) |
ZA (1) | ZA95856B (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19724510A1 (de) * | 1997-06-11 | 1998-12-24 | Gft Ges Fuer Feuerfest Technik | Torpedopfanne |
DE19724509A1 (de) * | 1997-06-11 | 1998-12-24 | Gft Ges Fuer Feuerfest Technik | Verfahren zur Reparatur und Zustellung von feuerfester Auskleidung |
DE19802207C2 (de) * | 1998-01-22 | 2002-12-19 | Intocast Ag Feuerfest Produkte | Schablone zur Auskleidung von Gießpfannen |
DE19802222C2 (de) * | 1998-01-22 | 2002-08-08 | Intocast Ag Feuerfest Produkte | Behälter für metallurgische Schmelzen |
CN101700572B (zh) * | 2009-11-20 | 2011-08-03 | 武汉钢铁(集团)公司 | 一种有碳钢包包底的砌筑方法 |
DE102013020732C9 (de) * | 2013-12-10 | 2020-08-06 | Refratechnik Holding Gmbh | Verwendung eines grobkeramischen, feuerfesten Erzeugnisses |
JP6493449B2 (ja) * | 2016-06-23 | 2019-04-03 | Jfeスチール株式会社 | 溶鋼鍋の施工方法及び型枠 |
CN112643018A (zh) * | 2020-12-09 | 2021-04-13 | 攀枝花钢城集团有限公司 | 一种钢包长寿化包底砌筑方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE373673C (de) * | 1922-03-07 | 1923-04-14 | Bong Sche Mahlwerke | Vorrichtung zum Einstampfen von Ofenfutter |
NL7008651A (de) * | 1970-06-12 | 1970-08-25 | Koninklijke Hoogovens En Staal | |
US3963815A (en) * | 1971-07-10 | 1976-06-15 | Nippon Steel Corporation | Method of lining molten metal vessels and spouts with refractories |
US3877673A (en) * | 1971-08-03 | 1975-04-15 | Pettibone Corp | Collapsible pattern for a ladle-lining installation |
DE2143241C3 (de) * | 1971-08-28 | 1974-08-22 | Erich 4330 Muelheim Lepper | Vorrichtung zur Reparatur des feuerfesten Futters von Elektroöfen |
US3837630A (en) * | 1972-03-20 | 1974-09-24 | Rheinstahl Ag | Method of lining metallurgical furnaces and a lining material |
BE785645A (fr) * | 1972-06-29 | 1972-10-16 | Cockerill Ougree Providence & | Procede pour la fabrication de fonds de recipients metallurgiques. |
FR2356106A1 (fr) * | 1976-06-21 | 1978-01-20 | Feurs Fonderies Acieries Elect | Procede de garnissage des fours a induction a creuset, moyens de mise en oeuvre et les fours a induction a creuset executes selon ce procede |
JPS53102803A (en) * | 1977-02-22 | 1978-09-07 | Nippon Steel Corp | Automatic repairing device of furnace body opening |
JPS57190764A (en) * | 1981-05-18 | 1982-11-24 | Nippon Kokan Kk <Nkk> | Split molding flask for casting |
ZA82830B (en) * | 1982-02-09 | 1983-02-23 | Aikoh Co | A core for blow-forming the lining of vessel for molten metal, a lining method using said core, and a lining composition used in said lining method |
US4589633A (en) * | 1984-01-26 | 1986-05-20 | Jacques Gilson | Process and installation for moulding a refractory lining of a container for liquid metal |
JPH0389392U (de) * | 1989-12-27 | 1991-09-11 | ||
CA2062697C (en) * | 1991-03-22 | 1997-04-22 | Charles W. Connors, Jr. | Method and apparatus for manufacturing and repairing molten metal containment vessels |
US5511762A (en) * | 1991-03-22 | 1996-04-30 | Magneco/Metrel, Inc. | Consumable form with degradable lining |
US5279092A (en) * | 1992-10-15 | 1994-01-18 | The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration | Pressure wall patch |
-
1994
- 1994-02-03 DE DE4403270A patent/DE4403270C2/de not_active Expired - Fee Related
-
1995
- 1995-02-03 DE DE59501914T patent/DE59501914D1/de not_active Expired - Fee Related
- 1995-02-03 PL PL95315680A patent/PL178274B1/pl not_active IP Right Cessation
- 1995-02-03 ES ES95908262T patent/ES2116728T5/es not_active Expired - Lifetime
- 1995-02-03 WO PCT/EP1995/000399 patent/WO1995021364A1/de active IP Right Grant
- 1995-02-03 EP EP95908262A patent/EP0741854B2/de not_active Expired - Lifetime
- 1995-02-03 CZ CZ962286A patent/CZ284816B6/cs not_active IP Right Cessation
- 1995-02-03 ZA ZA95856A patent/ZA95856B/xx unknown
-
1996
- 1996-08-02 US US08/691,978 patent/US5993703A/en not_active Expired - Fee Related
- 1996-08-02 FI FI963061A patent/FI111878B/fi active
Non-Patent Citations (1)
Title |
---|
See references of WO9521364A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL315680A1 (en) | 1996-11-25 |
FI963061A0 (fi) | 1996-08-02 |
DE4403270C1 (de) | 1995-05-04 |
FI963061A (fi) | 1996-10-01 |
EP0741854B2 (de) | 2002-08-28 |
ES2116728T3 (es) | 1998-07-16 |
ZA95856B (en) | 1996-02-20 |
US5993703A (en) | 1999-11-30 |
PL178274B1 (pl) | 2000-03-31 |
WO1995021364A1 (de) | 1995-08-10 |
FI111878B (fi) | 2003-09-30 |
EP0741854B1 (de) | 1998-04-15 |
DE59501914D1 (de) | 1998-05-20 |
ES2116728T5 (es) | 2003-04-01 |
DE4403270C2 (de) | 2000-02-24 |
CZ284816B6 (cs) | 1999-03-17 |
CZ228696A3 (en) | 1997-03-12 |
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