GB1334174A - Blast furnace operation - Google Patents

Blast furnace operation

Info

Publication number
GB1334174A
GB1334174A GB1954571*[A GB1954571A GB1334174A GB 1334174 A GB1334174 A GB 1334174A GB 1954571 A GB1954571 A GB 1954571A GB 1334174 A GB1334174 A GB 1334174A
Authority
GB
United Kingdom
Prior art keywords
gas
blast
during
reducing
furnace
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
Application number
GB1954571*[A
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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 DE19702030468 external-priority patent/DE2030468C3/en
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of GB1334174A publication Critical patent/GB1334174A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/34—Devices for discharging articles or materials from conveyor 
    • B65G47/46—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points
    • B65G47/50—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to destination signals stored in separate systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/07—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

1334174 Blast furnace operation NIPPON KOKAN K K and W WENZEL 9 June 1971 [20 June 1970] 19545/71 Heading C7D [Also in Division F4] An auxiliary reducing gas is introduced into the furnace above the melting zone the blowing rates of gas and of blast air each being varied cyclically in opposition so that a substantially constant flow of top gas results, while the feed rates and temperatures may be such that a mixed gas temperature of about 1000‹ C is maintained after mixing of the two streams inthe furnace. The blowing periods are preferably so controlled that during maximum gas injection ore is reduced to sponge down to the level where the reducing and hearth gases meet, the sponge then being melted during the period of maximum air blast; during the latter period the top gas may be used for heating the blast, while during injection of reducing gas the latter may be obtained from the top gas. Alternatively the reducing gas may be obtained from an independent source, such as a fluid or solid fossil fuel, possibly by reacting natural gas or petroleum with an oxygen-containing gas in a regenerator. The temperature and nitrogen content of the air blast may be higher and lower respectively during the period of minimum flow than during maximum. In a particular form of apparatus described, blast air from heater 7 is introduced through tuyeres 4, while reducing gas from heater 18 is introduced at 22 above the melting zone 6. Top gas for heating is drawn off through line 5a and supplied to gas scrubber 11, and heaters 18, 7 while reducing gas is taken off through line 5b and passed, if necessary with supplementary gas from line 16, through scrubber 11 before being reheated and returned to the furnace. To ensure adequate penetration of the air blast into the burden it may be blown at constant velocity independently of flow rate.
GB1954571*[A 1970-06-20 1971-06-09 Blast furnace operation Expired GB1334174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702030468 DE2030468C3 (en) 1970-06-20 Process for operating blast furnaces with auxiliary reducing gases

Publications (1)

Publication Number Publication Date
GB1334174A true GB1334174A (en) 1973-10-17

Family

ID=5774485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1954571*[A Expired GB1334174A (en) 1970-06-20 1971-06-09 Blast furnace operation

Country Status (8)

Country Link
US (1) US3764299A (en)
AT (1) AT325075B (en)
BE (1) BE767715A (en)
FR (1) FR2095390B1 (en)
GB (1) GB1334174A (en)
IT (1) IT940424B (en)
LU (1) LU63311A1 (en)
NL (1) NL157056B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE787866A (en) * 1972-08-22 1973-02-22 Centre Rech Metallurgique PROCESS FOR MANUFACTURING CAST IRON AT A HAUT FOURNEAU.
BE799791A (en) * 1973-05-18 1973-09-17 Centre Rech Metallurgique PROCESS FOR REDUCING ORE.
US4047935A (en) * 1974-12-11 1977-09-13 United States Steel Corporation Process for direct-reduction of iron-ore employing nuclear reactor-powdered catalytic reformer
US4381938A (en) * 1980-06-12 1983-05-03 Claflin H Bruce Multi-purpose zone controlled blast furnace and method of producing hot metal, gases and slags
US5234490A (en) * 1991-11-29 1993-08-10 Armco Inc. Operating a blast furnace using dried top gas
DE102005053505A1 (en) * 2005-11-09 2007-05-10 At.Protec Technologie Team Gmbh Method for operating a blast furnace and blast furnace suitable for this method
WO2010126171A1 (en) * 2009-04-30 2010-11-04 Ｊｆｅスチール株式会社 Blast furnace operation method, low-calorific-value gas combustion method for same, and blast furnace equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR721515A (en) * 1930-07-23 1932-03-04 Alternating action nozzle for cupolas
GB872062A (en) * 1957-12-26 1961-07-05 Texaco Development Corp Ore reduction process and apparatus

Also Published As

Publication number Publication date
NL157056B (en) 1978-06-15
DE2030468B2 (en) 1975-07-24
DE2030468A1 (en) 1972-01-05
FR2095390A1 (en) 1972-02-11
US3764299A (en) 1973-10-09
NL7107044A (en) 1971-12-22
BE767715A (en) 1971-10-18
LU63311A1 (en) 1971-09-13
AT325075B (en) 1975-10-10
IT940424B (en) 1973-02-10
FR2095390B1 (en) 1974-04-26

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Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee