EP0512658B2 - Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage - Google Patents

Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage Download PDF

Info

Publication number
EP0512658B2
EP0512658B2 EP92250092A EP92250092A EP0512658B2 EP 0512658 B2 EP0512658 B2 EP 0512658B2 EP 92250092 A EP92250092 A EP 92250092A EP 92250092 A EP92250092 A EP 92250092A EP 0512658 B2 EP0512658 B2 EP 0512658B2
Authority
EP
European Patent Office
Prior art keywords
vacuum
melt
treatment
generating
time
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
EP92250092A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0512658A1 (de
EP0512658B1 (de
Inventor
Schönewolf Dr.-Ing. Georg
Jürgen Ing. Dörpinghaus
Horst Dieter Dr.-Ing. Schöler
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6430994&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0512658(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0512658A1 publication Critical patent/EP0512658A1/de
Application granted granted Critical
Publication of EP0512658B1 publication Critical patent/EP0512658B1/de
Publication of EP0512658B2 publication Critical patent/EP0512658B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • C21C7/10—Handling in a vacuum

Definitions

  • the invention relates to a method for the secondary metallurgical treatment of molten steel under vacuum.
  • the size of the individual parts of the system or their capacity is coordinated so that for one a certain amount of production ensures a smooth flow of materials within the process chain.
  • Figure 2 shows the original treatment sequence at just one vacuum level.
  • the on Variant 2 shown in Figure 3 shows the final treatment of the melt in a separate rinsing station in front.
  • Variant 3 ( Figure 4) contains a second treatment stand.
  • a further reduction in the clock sequence is limited by the availability of the conventional vacuum pump system, usually existing from water ring pumps and steam jets.
  • the invention is based on a known VOD system. This usually consists of a Combination of water ring pumps and the actual core of the vacuum system, the steam jets.
  • Fig. 6 the usual one is in the first line, labeled VAK-Stand 1 (container 1) Treatment process of a melt shown in a VOD system, as it results from Fig. 1, only with the modification that the treatment section F was moved to a conditioning stand.
  • VAK-Stand 1 container 1
  • the pretreatment is also carried out the melt in container 1 'is completed.
  • the first melt is now in a form not shown in FIG Condition level transferred and finished.
  • Container 1 is now ready to hold one third ladle available while the container 1 'by appropriate actuation of shut-off devices can be subjected to a low vacuum.
  • the purpose of the solution according to the invention is to increase the time utilization of the previous and downstream melting and casting equipment by z.
  • Fig. 5 is a timing diagram of the solution according to the invention including an electric arc furnace or converter and a continuous caster shown, the cycle time of the vacuum system Is 55 minutes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Furnace Details (AREA)
EP92250092A 1991-05-02 1992-04-23 Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage Expired - Lifetime EP0512658B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114613 1991-05-02
DE4114613A DE4114613A1 (de) 1991-05-02 1991-05-02 Anlage zur behandlung fluessigen stahls und verfahren zum betrieb einer derartigen anlage

Publications (3)

Publication Number Publication Date
EP0512658A1 EP0512658A1 (de) 1992-11-11
EP0512658B1 EP0512658B1 (de) 1995-03-01
EP0512658B2 true EP0512658B2 (de) 1998-07-01

Family

ID=6430994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250092A Expired - Lifetime EP0512658B2 (de) 1991-05-02 1992-04-23 Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage

Country Status (6)

Country Link
US (1) US5242484A (enExample)
EP (1) EP0512658B2 (enExample)
JP (1) JP3387522B2 (enExample)
AT (1) ATE119210T1 (enExample)
DE (2) DE4114613A1 (enExample)
ES (1) ES2068672T3 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520718A (en) * 1994-09-02 1996-05-28 Inland Steel Company Steelmaking degassing method
CN103305662A (zh) * 2013-05-31 2013-09-18 中冶南方工程技术有限公司 用于真空冶炼的真空系统
CN110295269B (zh) * 2019-06-21 2021-11-26 敬业钢铁有限公司 一种使用精炼炉抽真空装置的抽真空方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062432B (de) * 1957-05-11 1959-07-30 Wiegand Appbau G M B H Entgasung von Metallschmelzen mittels Dampfstrahl-Apparaten
US3467167A (en) * 1966-09-19 1969-09-16 Kaiser Ind Corp Process for continuously casting oxidizable metals
DE2043861A1 (en) * 1970-09-04 1972-03-09 Rheinstahl AG Anlagentechnik, 4300 Essen Steel makin g - pre-heated scrap iron in electric furnaces and staged refining
JP3125050U (ja) 2006-06-26 2006-09-07 パイロットインキ株式会社 筆記具用キャップ

Also Published As

Publication number Publication date
EP0512658A1 (de) 1992-11-11
ATE119210T1 (de) 1995-03-15
ES2068672T3 (es) 1995-04-16
DE4114613C2 (enExample) 1993-07-08
DE59201502D1 (de) 1995-04-06
JP3387522B2 (ja) 2003-03-17
DE4114613A1 (de) 1992-11-05
JPH05148528A (ja) 1993-06-15
EP0512658B1 (de) 1995-03-01
US5242484A (en) 1993-09-07

Similar Documents

Publication Publication Date Title
DE2828634A1 (de) Verfahren und einrichtung fuer das raffinieren von schmelzen auf eisenbasis
DE2406480A1 (de) Verfahren zum raffinieren von stahl
DE1916775A1 (de) Verfahren und Anlage zum Behandeln,insbesondere zur Vakuum-Raffination geschmolzener Metalle
EP0512658B2 (de) Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage
DE1433597B1 (de) Verfahren zur Herstellung von hochlegierten Staehle
DE69118878T3 (de) Verfahren zum Herstellen kohlenstoffarmer Stähle
DE2803239A1 (de) Verfahren zur herstellung von nichtrostendem stahl mit extrem niedrigem kohlenstoffgehalt
DE69116233T2 (de) Verfahren zum Herstellen kohlenstoffarmer Stähle
DE3431181A1 (de) Verfahren und einrichtung fuer das behandeln und giessen von metallen und legierungen in einem geschlossenen raum
DE4401244C2 (de) Verfahren zur Entkohlung von Stahlschmelzen
DE2026780A1 (de) Verfahren und Vorrichtung zur Herstellung von rostfreiem Stahl
DE3245098C2 (de) Zweistufiges Verfahren zum Herstellen von hochwertigen Stählen mit extrem niedrigen P- und S-Gehalten, die im Konverter vorgeschmolzen werden
DE69125347T2 (de) Verfahren zur Pfannenstandentgasung mit einer die Pfanne umgebenden Induktionszusatzheizung
DE4404313C2 (de) Verfahren zum Aufschmelzen und Behandeln von Metallen und Anlage zur Durchführung des Verfahrens
DE3444512C2 (de) Verfahren und Vorrichtung zum Einblasen mindestens eines Gases oder mindestens eines in einem Gas suspendierten Feststoffes in eine in einem metallurgischen Gefäß befindliche metallische Schmelze, insbesondere in eine unter Vakuum stehende Stahlschmelze
EP2108049B1 (de) Verfahren und anlage zur erzeugung von stahl
AT235883B (de) Verfahren zum Reinigen von unlegierten und legierten Stählen von Wasserstoff und bzw. oder Sauerstoff
DE1228291B (de) Verfahren und Vorrichtung zum nachtraeglichen Entgasen geschmolzener Staehle
DE102023206511A1 (de) Kaskaden-Behälteranordnung, Verfahren zum Entgasen und/oder Raffinieren einer schmelzflüssigen metallischen Zusammensetzung und metallurgische Anlage zur Herstellung einer schmelzflüssigen metallischen Zusammensetzung
EP1302553A2 (de) Verfahren und Vorrichtung zur Vakuumbehandlung von hoch-kohlenstoffhaltigen Eisen-Schmelzen
DD214389A1 (de) Verfahren zur behandlung von fluessigstahl mit gasfoermigen medien
DE10044678C1 (de) Vorrichtung zum kontinuierlichen Frischen und Feinen von Stahleisen zu Feinstahl
DE2646437A1 (de) Verfahren und vorrichtung zum entschwefeln eines stahlschmelzbades
AT406457B (de) Verfahren und anlage zum herstellen von blöcken aus metallen
DE2005045C3 (de) Verfahren zur Herstellung von weichem Stahl

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 DK ES FR GB GR IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19930430

17Q First examination report despatched

Effective date: 19930611

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Effective date: 19950301

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950301

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950301

REF Corresponds to:

Ref document number: 119210

Country of ref document: AT

Date of ref document: 19950315

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59201502

Country of ref document: DE

Date of ref document: 19950406

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2068672

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Effective date: 19950601

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950518

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: VACMETAL GESELLSCHAFT FUER VAKUUM-METALLURGIE MBH

Effective date: 19951201

Opponent name: TECHNOMETAL, GESELLSCHAFT FUER METALLTECHNOLOGIE G

Effective date: 19951130

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19970326

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 19970327

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970418

Year of fee payment: 6

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19980403

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

ITF It: translation for a ep patent filed
27A Patent maintained in amended form

Effective date: 19980701

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

ET3 Fr: translation filed ** decision concerning opposition
GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010316

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010402

Year of fee payment: 10

Ref country code: LU

Payment date: 20010402

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010409

Year of fee payment: 10

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020423

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020423

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: 20020424

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: 20020430

EUG Se: european patent has lapsed

Ref document number: 92250092.1

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020423

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090414

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110421

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20110414

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110422

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59201502

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59201502

Country of ref document: DE

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: 20100430

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120424

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 119210

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120423