EP0954615A1 - Procede et installation pour le traitement de l'acier en poche - Google Patents
Procede et installation pour le traitement de l'acier en pocheInfo
- Publication number
- EP0954615A1 EP0954615A1 EP98901944A EP98901944A EP0954615A1 EP 0954615 A1 EP0954615 A1 EP 0954615A1 EP 98901944 A EP98901944 A EP 98901944A EP 98901944 A EP98901944 A EP 98901944A EP 0954615 A1 EP0954615 A1 EP 0954615A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bell
- liquid metal
- treatment
- steel
- installation
- 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
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered 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
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
-
- 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
- F27D3/16—Introducing a fluid jet or current into the charge
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
Definitions
- the present invention relates to a method and an installation for the treatment of liquid metal, in particular ladle steel.
- liquid metal in particular ladle steel
- processing methods are among others the so-called CAS, CAS-OB, HALT, etc.
- the liquid metal contained in the bag is subjected to various treatments in a confined area, delimited by the bell plunging into the liquid metal. Below the bell, a bubbling gas is injected into the liquid metal to homogenize it during the treatment. Turbulence therefore forms on the surface of the liquid metal which leads to increased local wear of the bell on its lower edge.
- the object of the present invention is to propose a method and a device making it possible to minimize the local wear of the bell during the treatment of liquid metal in the ladle.
- This object is achieved by a process aiming at minimizing the local wear of a bell during a treatment of a liquid metal in a pocket, characterized in that the bell is made to rotate around an axis during the treatment of the metal liquid.
- the bell or more precisely the refractory lining of the lower edge of the bell is attacked by thermal shock and by chemical corrosion under the effect of metal and slag projections.
- the wear is mainly caused by flaking of the refractory lining.
- the speed of rotation of the bell is between 0.5 and 2 revolutions / min during the treatment of the liquid metal.
- the speed of rotation of the bell can be adapted according to the diameter of the bell, according to the treatment applied to the liquid metal and / or according to the composition and the viscosity of the slag which covers the liquid metal in the pocket.
- the pocket can continue to rotate around its axis even when it is removed from the bath after the treatment of the liquid metal.
- the bell rotates around a vertical axis, substantially perpendicular to the surface of the molten metal respectively of the liquid steel.
- a plant for carrying out the method comprising a drive device for driving the bell in a rotational movement during the '.raitement the liquid metal.
- FIG. 1 shows a cross section of a bell and a pocket filled with liquid steel at rest
- FIG. 2 shows a cross section of a bell and a pocket filled with liquid steel in the working position
- FIG. 3 shows an enlargement of a bell drive device.
- a pocket 10 comprising a refractory lining 15 is filled with liquid steel 20 and is placed below a refractory hood 30.
- the hood 30 is lowered until its lower edge 40 plunges into the liquid steel 20
- the bell 30 is connected to a supply conduit 50 through which the combustible materials and the alloying elements are introduced into the liquid steel 20. It comprises a driving device 60 which can drive the bell in a rotational movement around . of a vertical axis.
- An inert or reducing bubbling gas can be introduced into the liquid steel 20 either by a porous plug (not shown) arranged in the bottom of the pocket 10 or by a lance (not shown) which is introduced into the pocket 10.
- This bubbling gas is used to homogenize the liquid steel 20 contained in the pocket 10 during the treatment of the steel 20.
- This bubbling gas creates turbulence on the surface of the steel 20 which causes local wear of the bell 30 and in particular from the lower edge 40 of the bell 30.
- Figure 3 shows an enlarged view of the drive device 60 of the bell 30.
- the upper end of the bell 30 comprises a ball bearing 70 secured to the bell 30 which allows the bell 30 to perform a rotational movement around its vertical axis.
- the upper part 75 of the bearing 70 is fixed to the bell 30 while the lower part 85 of the bearing 70 can rotate freely.
- the lower part 80 bears against a stop 85 arranged below the bearing 70.
- this bearing 70 must be protected against the penetration of impurities.
- the bell 30 is held in position using a fastening system
- the fixing system of the bell 30 can comprise p. ex. fixing nippers.
- a gear ring 90 On the upper part 75 of the bearing 70 is a gear ring 90.
- the bell 30 is rotated using a motor 100 preferably comprising a reduction gear 110 making it possible to vary the speed of rotation of the bell 30.
- the motor 100 drives the ring gear 90 by means of a toothed wheel 120 secured to the motor 100.
- a toothed wheel 120 secured to the motor 100.
- the supply duct 50 is sealed relative to the bell 30 by a baffle 130.
- the bell 30 and the supply conduit 50 comprise an internal coating of refractory material. This coating is not shown in the figures for reasons of clarity of the drawing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Steel (AREA)
- Coating With Molten Metal (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU90005 | 1997-01-15 | ||
LU90005A LU90005B1 (fr) | 1997-01-15 | 1997-01-15 | Procédé et installation pour le traitement de l'acer en poche |
PCT/EP1998/000044 WO1998031841A1 (fr) | 1997-01-15 | 1998-01-07 | Procede et installation pour le traitement de l'acier en poche |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0954615A1 true EP0954615A1 (fr) | 1999-11-10 |
EP0954615B1 EP0954615B1 (fr) | 2001-10-04 |
Family
ID=19731652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98901944A Expired - Lifetime EP0954615B1 (fr) | 1997-01-15 | 1998-01-07 | Procede et installation pour le traitement de l'acier en poche |
Country Status (12)
Country | Link |
---|---|
US (1) | US6413469B1 (fr) |
EP (1) | EP0954615B1 (fr) |
JP (1) | JP4201214B2 (fr) |
AT (1) | ATE206471T1 (fr) |
AU (1) | AU717378B2 (fr) |
BR (1) | BR9806315A (fr) |
CA (1) | CA2274009C (fr) |
DE (1) | DE69801895T2 (fr) |
LU (1) | LU90005B1 (fr) |
RU (1) | RU2205879C2 (fr) |
UA (1) | UA61095C2 (fr) |
WO (1) | WO1998031841A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7767698B2 (en) | 2002-06-03 | 2010-08-03 | Mcneil Ab | Formulation and use thereof |
EP1568790A1 (fr) * | 2004-02-24 | 2005-08-31 | Paul Wurth S.A. | Dispositif pour le traitement de métal liquide en poche |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1942202A (en) * | 1931-04-25 | 1934-01-02 | Ralph F Cohn | Rotator |
DE1190479B (de) * | 1960-07-07 | 1965-04-08 | Jan Erik Oestberg | Vorrichtung zum Beschleunigen physikalischchemischer Vorgaenge in Metallschmelzen |
GB1187168A (en) * | 1967-10-24 | 1970-04-08 | Standard Messo Duisburg | Improvements in or relating to the Production of Steel. |
DE2261138C3 (de) * | 1972-12-14 | 1975-05-15 | Polysius Ag, 4723 Neubeckum | Verfahren zum Einführen von Zuschlagstoffen in ein metallurgisches Bad |
DE2707726A1 (de) * | 1977-02-23 | 1978-08-31 | Kloeckner Humboldt Deutz Ag | Vorrichtung zum trennen einer mischung aus komponenten, insbesondere schmelzfluessiger metalle, metallverbindungen und/oder metallhaltiger schlacke in einem fliehkraftfeld |
CH656399A5 (de) * | 1981-05-08 | 1986-06-30 | Fischer Ag Georg | Tauch-verdampfungskammer. |
LU84472A1 (fr) * | 1982-11-17 | 1984-06-13 | Arbed | Procede et installation pour le traitement de l'acier en poche |
NO155447C (no) * | 1984-01-25 | 1987-04-01 | Ardal Og Sunndal Verk | Anordning ved anlegg for behandling av en vaeske, f.eks. en aluminiumssmelte. |
NO176553C (no) * | 1993-04-14 | 1995-04-26 | Norsk Hydro As | Injeksjonsutstyr |
-
1997
- 1997-01-15 LU LU90005A patent/LU90005B1/fr active
-
1998
- 1998-01-07 US US09/341,636 patent/US6413469B1/en not_active Expired - Fee Related
- 1998-01-07 EP EP98901944A patent/EP0954615B1/fr not_active Expired - Lifetime
- 1998-01-07 JP JP53361298A patent/JP4201214B2/ja not_active Expired - Lifetime
- 1998-01-07 WO PCT/EP1998/000044 patent/WO1998031841A1/fr active IP Right Grant
- 1998-01-07 BR BR9806315-4A patent/BR9806315A/pt not_active IP Right Cessation
- 1998-01-07 AU AU58620/98A patent/AU717378B2/en not_active Ceased
- 1998-01-07 AT AT98901944T patent/ATE206471T1/de active
- 1998-01-07 CA CA002274009A patent/CA2274009C/fr not_active Expired - Fee Related
- 1998-01-07 DE DE69801895T patent/DE69801895T2/de not_active Expired - Lifetime
- 1998-01-07 RU RU99117542/02A patent/RU2205879C2/ru not_active IP Right Cessation
- 1998-07-01 UA UA99084660A patent/UA61095C2/uk unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9831841A1 * |
Also Published As
Publication number | Publication date |
---|---|
LU90005B1 (fr) | 1998-07-16 |
WO1998031841A1 (fr) | 1998-07-23 |
CA2274009A1 (fr) | 1998-07-23 |
ATE206471T1 (de) | 2001-10-15 |
UA61095C2 (uk) | 2003-11-17 |
AU717378B2 (en) | 2000-03-23 |
DE69801895T2 (de) | 2002-04-25 |
EP0954615B1 (fr) | 2001-10-04 |
AU5862098A (en) | 1998-08-07 |
JP4201214B2 (ja) | 2008-12-24 |
DE69801895D1 (de) | 2001-11-08 |
RU2205879C2 (ru) | 2003-06-10 |
CA2274009C (fr) | 2007-05-01 |
US6413469B1 (en) | 2002-07-02 |
BR9806315A (pt) | 2000-03-14 |
JP2001508132A (ja) | 2001-06-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0050578B1 (fr) | Dispositif de traitement d'un bain de métal liquide par injection de gaz | |
EP0403411B1 (fr) | Procédé et dispositif de mise en vibration d'une lingotière de coulée continue des métaux | |
EP0954615B1 (fr) | Procede et installation pour le traitement de l'acier en poche | |
EP0093068B1 (fr) | Utilisation de busettes pour lingotieres | |
CA2252948C (fr) | Procede et installation de metallisation de tuyaux en fonte | |
KR100697855B1 (ko) | 마그네슘합금 용탕용 교반장치 | |
CN113042696B (zh) | 一种结晶器保护渣更换装置及结晶器的捞渣方法 | |
WO2005080612A1 (fr) | Dispositif pour le traitement de metal liquide en poche | |
FR2564761A1 (fr) | Dispositif d'introduction de coulee pour paniers de coulee d'installations de coulee continue | |
EP0242347A2 (fr) | Dispositif pour la coulée d'un métal en phase pâteuse | |
EP0778098B1 (fr) | Lingotière avec dispositif de brassage électromagnétique | |
JP5382643B2 (ja) | 攪拌式脱硫装置用攪拌機 | |
BE1000221A6 (fr) | Dispositif pour la coulee d'un metal en phase pateuse. | |
EP0339174A1 (fr) | Lance d'injection ou de soufflage avec chambre de refroidissement | |
CH621365A5 (en) | Process for refining magnesium, copper, zinc, tin and lead | |
FR2608475A1 (fr) | Obturateur tournant pour un recipient metallurgique ainsi que corps rotatif pour un tel obturateur | |
RU99117542A (ru) | Способ и установка для обработки стали в ковше | |
BE893384A (fr) | Tuyere de soufflage de gaz, sa fabrication et son utilisation | |
EP0293349B1 (fr) | Appareil pour la préparation de granules métalliques aciculaires | |
SU1044638A2 (ru) | Способ науглероживани расплава | |
SU1165067A1 (ru) | Установка дл электрошлаковой выплавки слитков | |
FR2474910A1 (fr) | Perfectionnement aux dispositifs de coulee d'acier liquide | |
BE357971A (fr) | ||
JPH04354815A (ja) | 転炉々口付着地金除去装置 | |
FR2480155A1 (fr) | Dispositif pour realiser l'alimentation en metal liquide d'une installation de coulee continue |
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 |
|
17P | Request for examination filed |
Effective date: 19990529 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE FR GB IT NL SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20010117 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE FR GB IT NL SE |
|
REF | Corresponds to: |
Ref document number: 206471 Country of ref document: AT Date of ref document: 20011015 Kind code of ref document: T |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20011004 |
|
REF | Corresponds to: |
Ref document number: 69801895 Country of ref document: DE Date of ref document: 20011108 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
NLS | Nl: assignments of ep-patents |
Owner name: SMS MEVAC GMBH Effective date: 20061004 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090219 Year of fee payment: 12 |
|
BERE | Be: lapsed |
Owner name: *SMS MEVAC G.M.B.H. Effective date: 20100131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100131 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120206 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20120120 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20120125 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20130801 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20130930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130108 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130131 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20150127 Year of fee payment: 18 Ref country code: DE Payment date: 20150121 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20150122 Year of fee payment: 18 Ref country code: GB Payment date: 20150121 Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69801895 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 206471 Country of ref document: AT Kind code of ref document: T Effective date: 20160107 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20160107 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160802 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160107 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160107 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160107 |