RU2008123506A - ADVANCED FURME FOR LD STEEL PRODUCTION PROCESS - Google Patents

ADVANCED FURME FOR LD STEEL PRODUCTION PROCESS Download PDF

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Publication number
RU2008123506A
RU2008123506A RU2008123506/02A RU2008123506A RU2008123506A RU 2008123506 A RU2008123506 A RU 2008123506A RU 2008123506/02 A RU2008123506/02 A RU 2008123506/02A RU 2008123506 A RU2008123506 A RU 2008123506A RU 2008123506 A RU2008123506 A RU 2008123506A
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RU
Russia
Prior art keywords
nozzle
central
tuyere
peripheral
nozzles
Prior art date
Application number
RU2008123506/02A
Other languages
Russian (ru)
Other versions
RU2414512C2 (en
Inventor
Раджамани САМБАСИВАМ (IN)
Раджамани САМБАСИВАМ
Сурия Нараян ЛЕНКА (IN)
Сурия Нараян ЛЕНКА
Франц ДУРСТ (DE)
Франц Дурст
Санджай ЧАНДРА (IN)
Санджай ЧАНДРА
Сатиш Кумар АДЖМАНИ (IN)
Сатиш Кумар АДЖМАНИ
Original Assignee
Тата Стил Лимитед (In)
Тата Стил Лимитед
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Application filed by Тата Стил Лимитед (In), Тата Стил Лимитед filed Critical Тата Стил Лимитед (In)
Publication of RU2008123506A publication Critical patent/RU2008123506A/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/22Arrangements of air or gas supply devices
    • F27B3/225Oxygen blowing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/42Constructional features of converters
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/42Constructional features of converters
    • C21C5/46Details or accessories
    • C21C5/4606Lances or injectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

An improved lance for LD steelmaking comprises a plurality of peripheral supersonic nozzles provided with a single inlet high pressure gas supply line and a central nozzle. The central nozzle is a subsonic nozzle provided with a separate low pressure gas supply line (1 ) independent of the high pressure gas supply line (2) for the peripheral nozzles. The flow rate through the central subsonic nozzle is controllable for varying generation of liquid metal droplets during the blow, according to the process requirement.

Claims (9)

1. Усовершенствованная фурма для LD процесса производства стали, содержащая:1. An advanced lance for the LD steelmaking process, comprising: множество периферийных сверхзвуковых сопел, расположенных вокруг центральной оси указанной фурмы, причем указанные периферийные сопла снабжены одним входным трубопроводом для подачи газа высокого давления; иa plurality of peripheral supersonic nozzles arranged around a central axis of said tuyere, said peripheral nozzles having one inlet conduit for supplying high pressure gas; and центральное сопло;central nozzle; в которой указанное центральное сопло представляет собой дозвуковое сопло, снабженное отдельным трубопроводом для подачи газа низкого давления, при этом расход через указанное центральное дозвуковое сопло управляется для изменения выработки капель жидкого металла в течение продувки в соответствии с требованиями процесса.in which the specified Central nozzle is a subsonic nozzle equipped with a separate pipe for supplying low pressure gas, while the flow through the specified Central subsonic nozzle is controlled to change the production of droplets of liquid metal during the purge in accordance with the requirements of the process. 2. Фурма по п.1, в которой указанная фурма содержит шесть периферийных сверхзвуковых сопел и одно центральное дозвуковое сопло.2. The tuyere according to claim 1, wherein said tuyere contains six peripheral supersonic nozzles and one central subsonic nozzle. 3. Фурма по п.1 или 2, в которой указанное центральное дозвуковое сопло имеет только сходящуюся секцию для облегчения управления расходом газа через него.3. The lance according to claim 1 or 2, wherein said central subsonic nozzle has only a converging section to facilitate control of the gas flow through it. 4. Фурма по п.1 или 2, в которой указанное центральное дозвуковое сопло имеет больший диаметр на выходе, чем диаметр на выходе указанного периферийного сверхзвукового сопла.4. The tuyere according to claim 1 or 2, wherein said central subsonic nozzle has a larger outlet diameter than the diameter at the outlet of said peripheral supersonic nozzle. 5. Фурма по п.3, в которой указанное центральное дозвуковое сопло имеет больший диаметр на выходе, чем диаметр на выходе указанного периферийного сверхзвукового сопла.5. The lance according to claim 3, in which the specified Central subsonic nozzle has a larger diameter at the exit than the diameter at the exit of the specified peripheral supersonic nozzle. 6. Фурма по п.1, в которой трубопровод для подачи газа для указанного множества периферийных сверхзвуковых сопел и трубопровод для подачи газа для указанных центральных дозвуковых сопел снабжаются двумя отдельными регулирующими клапанами с приводами для управления расходом через них.6. The tuyere according to claim 1, wherein the gas supply pipe for said plurality of peripheral supersonic nozzles and the gas supply pipe for said central subsonic nozzles are provided with two separate control valves with actuators for controlling the flow through them. 7. Фурма по п.6, в которой указанный регулирующий клапан, предусмотренный для указанного центрального дозвукового сопла, предназначен для изменения расхода через него, чтобы избежать разбрызгивания в течение начальной стадии продувки, и для управления динамикой реакций в течение продувки, посредством изменения интенсивности скорости выработки капель металла.7. The lance according to claim 6, in which the specified control valve provided for the specified Central subsonic nozzle, is designed to change the flow through it, to avoid spatter during the initial stage of purging, and to control the dynamics of reactions during purging, by changing the intensity of speed producing drops of metal. 8. Фурма по любому из пп.1 и 2, 5-7, в которой указанные периферийные сверхзвуковые сопла могут иметь равные или поочередно изменяющиеся углы наклона от вертикальной оси фурмы.8. A lance according to any one of claims 1 and 2, 5-7, wherein said peripheral supersonic nozzles may have equal or alternating angles of inclination from the vertical axis of the lance. 9. Фурма по п.3, в которой указанные периферийные сверхзвуковые сопла могут иметь равные или поочередно изменяющиеся углы наклона от вертикальной оси фурмы. 9. The tuyere according to claim 3, wherein said peripheral supersonic nozzles may have equal or alternating angles of inclination from the vertical axis of the tuyere.
RU2008123506/02A 2005-11-10 2006-05-04 Improved tuyere for ld process of steel production RU2414512C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1023/KOL/05 2005-11-10
IN1023KO2005 2005-11-10

Publications (2)

Publication Number Publication Date
RU2008123506A true RU2008123506A (en) 2009-12-27
RU2414512C2 RU2414512C2 (en) 2011-03-20

Family

ID=38023007

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2008123506/02A RU2414512C2 (en) 2005-11-10 2006-05-04 Improved tuyere for ld process of steel production

Country Status (8)

Country Link
EP (1) EP1963541B1 (en)
JP (1) JP5047185B2 (en)
KR (1) KR101290639B1 (en)
AT (1) ATE546553T1 (en)
BR (1) BRPI0618348B1 (en)
PL (1) PL1963541T3 (en)
RU (1) RU2414512C2 (en)
WO (1) WO2007054957A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8323558B2 (en) 2009-11-30 2012-12-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic control of lance utilizing counterflow fluidic techniques
US8377372B2 (en) 2009-11-30 2013-02-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic lances utilizing fluidic techniques
US10781499B2 (en) * 2018-01-17 2020-09-22 Air Products And Chemicals, Inc. Bottom stirring tuyere and method for a basic oxygen furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848758U (en) * 1981-09-30 1983-04-01 新日本製鐵株式会社 Top blowing lance nozzle shape in converter
FR2521167B1 (en) * 1982-02-10 1987-04-30 Siderurgie Fse Inst Rech GAS INJECTION LANCE FOR METALLURGICAL CONVERTER
JPS6260807A (en) * 1985-09-10 1987-03-17 Nippon Kokan Kk <Nkk> Converter operating method and oxygen blowing lance
JPH06240329A (en) * 1993-02-17 1994-08-30 Nippon Steel Corp Top blowing oxygen lance for refining molten metal and method for refining molten metal
JPH07138632A (en) * 1993-11-18 1995-05-30 Nippon Steel Corp Nozzle structure of lance for blowing oxygen into electric furnace
JP3655659B2 (en) * 1995-03-03 2005-06-02 新日本製鐵株式会社 Blow acid sending method on converter with good yield
US5681526A (en) * 1996-04-23 1997-10-28 Usx Corporation Method and apparatus for post-combustion of gases during the refining of molten metal
JPH10287909A (en) * 1997-04-15 1998-10-27 Sumitomo Metal Ind Ltd Top-blown lance for blowing gas into converter and also melting skull stuck to nose
IT1302799B1 (en) * 1998-11-10 2000-09-29 Danieli & C Ohg Sp NOZZLE FOR OXYGEN AND GASTECNOLOGICAL INJECTION DEVICE AND RELATED SIZING METHOD

Also Published As

Publication number Publication date
JP2009516070A (en) 2009-04-16
ATE546553T1 (en) 2012-03-15
BRPI0618348A2 (en) 2013-01-08
BRPI0618348B1 (en) 2018-11-21
PL1963541T3 (en) 2012-07-31
JP5047185B2 (en) 2012-10-10
KR20080077359A (en) 2008-08-22
EP1963541A1 (en) 2008-09-03
WO2007054957A1 (en) 2007-05-18
EP1963541B1 (en) 2012-02-22
RU2414512C2 (en) 2011-03-20
KR101290639B1 (en) 2013-07-30

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20200505