EP0162949A1 - Verfahren und Vorrichtung zum Messen der Bedingungen für die Schlackenbildung in einem Konverter - Google Patents

Verfahren und Vorrichtung zum Messen der Bedingungen für die Schlackenbildung in einem Konverter Download PDF

Info

Publication number
EP0162949A1
EP0162949A1 EP84110571A EP84110571A EP0162949A1 EP 0162949 A1 EP0162949 A1 EP 0162949A1 EP 84110571 A EP84110571 A EP 84110571A EP 84110571 A EP84110571 A EP 84110571A EP 0162949 A1 EP0162949 A1 EP 0162949A1
Authority
EP
European Patent Office
Prior art keywords
slag
converter
vessel
blowing
light
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
Application number
EP84110571A
Other languages
English (en)
French (fr)
Other versions
EP0162949B1 (de
Inventor
Keiji Nippon Steel Corporation Arima
Yujiro Nippon Steel Corporation Ueda
Toru Nippon Steel Corporation Yoshida
Hiroshi Nippon Steel Corporation Narita
Mitsuo Nippon Steel Corporation Yagi
Hiroshi Nippon Steel Corporation Yamana
Shoichi Nippon Steel Corporation Osada
Yukinori Nippon Steel Corp.Yawata Works Shigeyama
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Priority claimed from JP59084116A external-priority patent/JPS60228931A/ja
Priority claimed from JP59084118A external-priority patent/JPS60228928A/ja
Priority claimed from JP59084114A external-priority patent/JPS60228929A/ja
Priority claimed from JP59084117A external-priority patent/JPS60230929A/ja
Priority claimed from JP59084115A external-priority patent/JPS60228930A/ja
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0162949A1 publication Critical patent/EP0162949A1/de
Application granted granted Critical
Publication of EP0162949B1 publication Critical patent/EP0162949B1/de
Expired 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing

Definitions

  • acoustic measuring method changes in the frequency and magnitude of the acoustics generated in the converter are monitored to estimate the slag level and to predict slopping.
  • FIG. 1 is a cross-sectional view of a top-blowing converter, schematically showing an embodiment of mounting a device for observing the vessel-interior light.
  • a converter 1 is provided, on its side wall 2, with at least one throughhole 4 opening into the vessel interior 3.
  • At least one vessel-interior observation device 5 is disposed in the throughhole 4 to face the vessel interior 3 and observe the intensity or the wavelength of the light emitted from the slag and gaseous atmosphere within the converter 1.
  • This observation device 5 may be a photometer and is hereinafter referred to as the photometer 5.
  • Fig. 1 only one throughhole and observation device are shown.
  • Figures 2A to 2C show non-immersion portions 8 of the converter side wall 20, i.e., in the converter upright position, tilting position for tapping, and tilting position for charging the pig iron from the ladle, respectively.
  • the portion of the converter wall 20 where a trunnion shaft 6 is rigidly secured and the region around that portion are not immersed within a melt 7.
  • This portion and region, shown by the hatching are the non-immersion portion 8.
  • the throughholes 4 can be formed through the non-immersion portion 8 to prevent the melt 7 from entering the throughholes 4.
  • FIGS. 6 and 7 are partial cross-sectional views of a converter, showing different mounting structures of a photometer.
  • a photometer 5 is mounted in the throughhole 4 via a protective tube 11 having an inner cylinder 110.
  • a cooling-water circulating channel 111 is formed in the protective tube 11. Cooling water w is supplied into the cooling-water circulating channel 111 via one of conduits 112. The water w is withdrawn via the other conduit 112.
  • the photometer 5 is installed within the inner cylinder 110 in such a manner that its active side faces the vessel interior.
  • Purge gas such as N 2 , Ar, C0 2 , or another inert gas g, is supplied to and passed through the inner cylinder 110 and then ejected through the aperture l13 into the vessel. During its passage and ejection, the purge gas cools the photometer 5.and prevents gases including dust, slag, or the like from entering the inner cylinder 110.
  • a throughhole formed at the non-immersing portion 8 (Figs. 2A, 2B, and 2C) cools due to non-contact with the molten steel and further cools if the inert purge gas is blown to it through the probe tip end.
  • deposits on the throughhole can be melted due to the latent heat of the slag when the end of the throughhole is exposed to the foaming slag. In this case, the deposits can be blown out by inert purge gas, thus preventing accumulation of deposits.
  • the amount of slag is controlled on the basis of the detected slag-forming conditions so as to maintain the amount of slag within an appropriate range at a high accuracy.
  • This embodiment aims not only to predict the occurrence of slopping but also to enhance operational efficiency and improve the steel quality by means of observing the slag level at a high accuracy, monitoring the variation tendencies in the slag level, and suppressing detrimental tendencies. A typical example of this embodiment is described with reference to Fig. 16.
  • Example 4 Blowing was carried out as in Example 4 except for the following: Instead of addition of another throughhole for injection of pulverized auxiliary raw materials using purge gas to the throughhole for observation of the vessel interior, an assembled probe was equipped, which had an observation device and injection mechanism.
  • This kind of probe is a modified one shown in Fig. 15 in the following points.
  • Inlet port 65 into an outer cylinder 64 is connected to the powder injection unit.
  • the injected powder in carrier gas is released into the vessel interior from the outer cylinder 64.
  • the probe 61 includes a photoconductor therein.
  • the purge gas is released from an inlet port 63 and blown through a small aperture 42 of a front tip 41 screwed into a probe 61.
  • the purge gas is mixed with oxygen concentration with 30 to 40% by volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
EP84110571A 1984-04-27 1984-09-05 Verfahren und Vorrichtung zum Messen der Bedingungen für die Schlackenbildung in einem Konverter Expired EP0162949B1 (de)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP84114/84 1984-04-27
JP59084116A JPS60228931A (ja) 1984-04-27 1984-04-27 転炉スロツピング検出装置
JP59084118A JPS60228928A (ja) 1984-04-27 1984-04-27 スロッピング検出方法
JP59084114A JPS60228929A (ja) 1984-04-27 1984-04-27 転炉炉況観測装置
JP59084117A JPS60230929A (ja) 1984-04-27 1984-04-27 転炉操業方法
JP84115/84 1984-04-27
JP59084115A JPS60228930A (ja) 1984-04-27 1984-04-27 転炉炉内観測方法
JP84116/84 1984-04-27
JP84118/84 1984-04-27
JP84117/84 1984-04-27

Publications (2)

Publication Number Publication Date
EP0162949A1 true EP0162949A1 (de) 1985-12-04
EP0162949B1 EP0162949B1 (de) 1987-12-16

Family

ID=27525078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110571A Expired EP0162949B1 (de) 1984-04-27 1984-09-05 Verfahren und Vorrichtung zum Messen der Bedingungen für die Schlackenbildung in einem Konverter

Country Status (5)

Country Link
EP (1) EP0162949B1 (de)
AU (1) AU558925B2 (de)
BR (1) BR8404496A (de)
CA (1) CA1250356A (de)
DE (1) DE3468127D1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424354A1 (de) * 1989-10-14 1991-04-24 VOEST-ALPINE Industrieanlagenbau GmbH Stahlwerkskonverter
EP0486462A1 (de) * 1990-11-14 1992-05-20 VOEST-ALPINE Industrieanlagenbau GmbH Verfahren und Einrichtung zum Verhindern einer Anlagerung von Ansätzen in einem metallurgischen Gefäss
WO1997022859A1 (de) * 1995-12-20 1997-06-26 Voest-Alpine Industrieanlagenbau Gmbh Verfahren und vorrichtung zur bestimmung von aus einer schmelze ausgehenden elektromagnetischen wellen
WO2000050863A1 (en) * 1999-02-23 2000-08-31 Bethlehem Steel Corporation Fiber-optic sensor and method to determine carbon content of molten steel in a basic oxygen furnace
WO2011154179A3 (de) * 2010-06-09 2012-03-15 Sms Siemag Ag Einrichtung zur temperaturmessung in einem konverter
CN101029848B (zh) * 2007-01-29 2013-02-20 聚光科技(杭州)股份有限公司 一种应用于高温液体的连续测温方法
EP3042966A1 (de) * 2015-01-09 2016-07-13 SMS group GmbH Verfahren und vorrichtung zum betreiben einer blaslanze in einem konverter
RU2697117C2 (ru) * 2014-02-19 2019-08-12 Прайметалз Текнолоджиз Аустриа ГмбХ Способ перемешивания ванны металла и печная установка
CN112143853A (zh) * 2020-10-13 2020-12-29 长春工业大学 一种aod炉冶炼过程的喷溅预报与喷溅压制方法及系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410031B (de) * 2000-12-01 2003-01-27 Voest Alpine Ind Anlagen Einrichtung zur aufnahme und weiterleitung elektromagnetischer wellen, die von einer materialprobe ausgesendet werden
DE102012211714A1 (de) * 2012-07-05 2014-05-22 Siemens Vai Metals Technologies Gmbh Verfahren und Vorrichtung zur Detektion des Schlackepegels in einem metallurgischen Gefäß
CN106996967B (zh) * 2017-04-28 2023-08-22 成都哈工智传科技有限公司 磁性矿品位检测方法及检测设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408873A1 (de) * 1961-10-13 1968-11-21 Max Planck Inst Eisenforschung Einrichtung zur kontinuierlichen Temperaturmessung von Eisen- und Stahlschmelzen,insbesondere beim Frischen von Roheisen
GB1411790A (en) * 1971-11-30 1975-10-29 Monsanto Co Microwave-excited emission detector
DE2812871A1 (de) * 1977-03-25 1978-10-05 Sumitomo Metal Ind Verfahren und vorrichtung zum messen des schlackenschaeumens in einem konverter waehrend des verblasens unter verwendung eines mikrowellenpegelmessers
US4345746A (en) * 1979-11-07 1982-08-24 Arbed S.A. Apparatus for refining ferrous melt with slag conditioning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408873A1 (de) * 1961-10-13 1968-11-21 Max Planck Inst Eisenforschung Einrichtung zur kontinuierlichen Temperaturmessung von Eisen- und Stahlschmelzen,insbesondere beim Frischen von Roheisen
GB1411790A (en) * 1971-11-30 1975-10-29 Monsanto Co Microwave-excited emission detector
DE2812871A1 (de) * 1977-03-25 1978-10-05 Sumitomo Metal Ind Verfahren und vorrichtung zum messen des schlackenschaeumens in einem konverter waehrend des verblasens unter verwendung eines mikrowellenpegelmessers
US4345746A (en) * 1979-11-07 1982-08-24 Arbed S.A. Apparatus for refining ferrous melt with slag conditioning

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, field C, vol. 4, no. 159, November 6, 1980 THE PATENT OFFICE JAPANESE GOVERNMENT page 73 C 30 * JP - A - 55-104 417 ( KAWASAKI ) * *
PATENT ABSTRACTS OF JAPAN, unexamined applications, field C, vol. 6, no. 239, November 26, 1982 THE PATENT OFFICE JAPANESE GOVERNMENT page 77 C 137 * JP - A - 57-140 812 ( SUMITOMO ) * *
PATENT ABSTRACTS OF JAPAN, unexamined applications, field C, vol. 7, no. 135, June 11, 1983 THE PATENT OFFICE JAPANESE GOVERNMENT page 50 C 170 * JP - A - 58-48 615 ( KAWASAKI ) * *
PATENT ABSTRACTS OF JAPAN, unexamined applications, section C, vol. 1, no. 157, December 14, 1977 THE PATENT OFFICE JAPANESE GOVERNMENT page 3497 C 77 * JP - A - 52 -101 618 ( SHIN NIPPON ) * *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424354A1 (de) * 1989-10-14 1991-04-24 VOEST-ALPINE Industrieanlagenbau GmbH Stahlwerkskonverter
EP0486462A1 (de) * 1990-11-14 1992-05-20 VOEST-ALPINE Industrieanlagenbau GmbH Verfahren und Einrichtung zum Verhindern einer Anlagerung von Ansätzen in einem metallurgischen Gefäss
US6172367B1 (en) 1995-12-20 2001-01-09 Voest-Alpine Industrieanlagenbau Gmbh. Method and device for measuring electromagnetic waves emanating from a melt
EP1016858A1 (de) * 1995-12-20 2000-07-05 Voest-Alpine Industrieanlagenbau Gmbh Verfahren und Vorrichtung zur Bestimmung von aus einer Schmelze ausgehenden elektromagnetischen Wellen
AU723209B2 (en) * 1995-12-20 2000-08-17 Voest-Alpine Industrieanlagenbau Gmbh Method for determining electromagnetic waves originating from a melt
WO1997022859A1 (de) * 1995-12-20 1997-06-26 Voest-Alpine Industrieanlagenbau Gmbh Verfahren und vorrichtung zur bestimmung von aus einer schmelze ausgehenden elektromagnetischen wellen
WO2000050863A1 (en) * 1999-02-23 2000-08-31 Bethlehem Steel Corporation Fiber-optic sensor and method to determine carbon content of molten steel in a basic oxygen furnace
US6175676B1 (en) 1999-02-23 2001-01-16 Bethlehem Steel Corporation Fiber optic sensor and method of use thereof to determine carbon content of molten steel contained in a basic oxygen furnace
CN101029848B (zh) * 2007-01-29 2013-02-20 聚光科技(杭州)股份有限公司 一种应用于高温液体的连续测温方法
WO2011154179A3 (de) * 2010-06-09 2012-03-15 Sms Siemag Ag Einrichtung zur temperaturmessung in einem konverter
RU2697117C2 (ru) * 2014-02-19 2019-08-12 Прайметалз Текнолоджиз Аустриа ГмбХ Способ перемешивания ванны металла и печная установка
EP3042966A1 (de) * 2015-01-09 2016-07-13 SMS group GmbH Verfahren und vorrichtung zum betreiben einer blaslanze in einem konverter
CN112143853A (zh) * 2020-10-13 2020-12-29 长春工业大学 一种aod炉冶炼过程的喷溅预报与喷溅压制方法及系统
CN112143853B (zh) * 2020-10-13 2022-04-15 长春工业大学 一种aod炉冶炼过程的喷溅预报与喷溅压制方法及系统

Also Published As

Publication number Publication date
AU3255884A (en) 1985-10-31
BR8404496A (pt) 1986-03-25
DE3468127D1 (en) 1988-01-28
EP0162949B1 (de) 1987-12-16
AU558925B2 (en) 1987-02-12
CA1250356A (en) 1989-02-21

Similar Documents

Publication Publication Date Title
US4651976A (en) Method for operating a converter used for steel refining
EP0162949B1 (de) Verfahren und Vorrichtung zum Messen der Bedingungen für die Schlackenbildung in einem Konverter
EP3620542B1 (de) Verfahren zur umrichterbetriebsüberwachung und umrichterbetriebsverfahren
US6923573B2 (en) Apparatus and method for measuring temperature of molten metal
US6172367B1 (en) Method and device for measuring electromagnetic waves emanating from a melt
CN113661257B (zh) 转炉的喷溅预知方法、转炉的操作方法及转炉的喷溅预知系统
US4749171A (en) Method and apparatus for measuring slag-foam conditions within a converter
CN106795573B (zh) 用于确定氧气吹炼过程中的点火时间点的方法和设备
US5830407A (en) Pressurized port for viewing and measuring properties of a molten metal bath
JP7036142B2 (ja) 転炉のスロッピング予知方法、転炉の操業方法及び転炉のスロッピング予知システム
JP3164976B2 (ja) 転炉でのスロッピング予知方法及びその防止方法
GB2083182A (en) Improvements in or relating to tuyeres for metallurgical vessels
JP3440267B2 (ja) アーク溶解炉のスラグへのアーク埋没評価方法
Vazquez Tenova’s intelligent i BOF® technology, a modular package for BOF process improvement
JPS60228929A (ja) 転炉炉況観測装置
JPH09118908A (ja) 転炉吹錬制御方法
Unwin Improving slag detection
JPH113778A (ja) アーク炉における溶解進捗状況の判定方法
JPS6126714A (ja) 転炉操業方法
JPS60228930A (ja) 転炉炉内観測方法
JPS6224493B2 (de)
JPS63227705A (ja) 転炉の吹錬制御方法
JPS6144117A (ja) 転炉側壁貫通孔の閉塞防止方法
JP2020105610A (ja) 転炉の操業方法
JPS59166612A (ja) 転炉異常反応検出方法

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

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19860114

17Q First examination report despatched

Effective date: 19870109

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3468127

Country of ref document: DE

Date of ref document: 19880128

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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970827

Year of fee payment: 14

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

Ref country code: FR

Payment date: 19970909

Year of fee payment: 14

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

Ref country code: DE

Payment date: 19970912

Year of fee payment: 14

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

Ref country code: NL

Payment date: 19970929

Year of fee payment: 14

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

Ref country code: BE

Payment date: 19971104

Year of fee payment: 14

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: 19980905

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: 19980930

BERE Be: lapsed

Owner name: NIPPON STEEL CORP.

Effective date: 19980930

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

Ref country code: NL

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

Effective date: 19990401

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

Effective date: 19980905

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: 19990531

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990401

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: 19990701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST