JPS648213A - Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter - Google Patents

Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter

Info

Publication number
JPS648213A
JPS648213A JP16187387A JP16187387A JPS648213A JP S648213 A JPS648213 A JP S648213A JP 16187387 A JP16187387 A JP 16187387A JP 16187387 A JP16187387 A JP 16187387A JP S648213 A JPS648213 A JP S648213A
Authority
JP
Japan
Prior art keywords
iron
tuyere
gas
cold material
triple
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
JP16187387A
Other languages
Japanese (ja)
Other versions
JPH0478685B2 (en
Inventor
Kazumasa Umezawa
Mitsutoshi Mimura
Koji Mori
Akira Nobemoto
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
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP16187387A priority Critical patent/JPS648213A/en
Publication of JPS648213A publication Critical patent/JPS648213A/en
Publication of JPH0478685B2 publication Critical patent/JPH0478685B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • Y02P10/20—Recycling

Landscapes

  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

PURPOSE:To effectively prevent a triple-tubes tuyere from clogging at the time of non-melting stage by blowing each specific gas from each pipe in the tuyere composing of the triple tubes providing in furnace bottom at iron-contained cold material non-melting stage in a converter. CONSTITUTION:The triple-tubes tuyere 1 composing of inner tube 2, intermediate tube 3 and outer tube 4 is arranged at the furnace bottom in the converter, and carboneceous powder is blown from inner tube 2 at center together with non-oxidizing carrier gas and oxidized gas is blown from the intermediate annular part 5 and non-oxidized gas for cooling is blown from the outside annular part 6, to carbonize and melt the iron-contained cold material under existence of molten iron. In this iron-contained cold material non-melting stage, such as charging of the iron-contained cold material, sampling for measuring temp., tapping, slag removal process, the non-oxidized gas from the inner tube 2 at center, mixing gas of the non-oxidizing gas and oxidizing gas (about 10-40% oxygen concn.) from the intermediate annular part 5, non-oxidizing gas for cooling from outside annular part 6 are respectively blown. By this method, the clogging of the tuyere 1 at non-melting stage is effectively prevented and heat-cycle of carbonizing and melting for the iron-contained cold material is stably and repeatedly executed.
JP16187387A 1987-06-29 1987-06-29 Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter Granted JPS648213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16187387A JPS648213A (en) 1987-06-29 1987-06-29 Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16187387A JPS648213A (en) 1987-06-29 1987-06-29 Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter

Publications (2)

Publication Number Publication Date
JPS648213A true JPS648213A (en) 1989-01-12
JPH0478685B2 JPH0478685B2 (en) 1992-12-11

Family

ID=15743596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16187387A Granted JPS648213A (en) 1987-06-29 1987-06-29 Method for preventing clogging of triple-tubes tuyere in iron-contained cold material carbonized-melting converter

Country Status (1)

Country Link
JP (1) JPS648213A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258542A (en) * 1990-05-17 1993-11-02 Nippon Paint Co., Ltd. Carbonates of acetylenic alcohols
US5431709A (en) * 1993-09-21 1995-07-11 Gas Research Institute Accretion controlling tuyere

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258542A (en) * 1990-05-17 1993-11-02 Nippon Paint Co., Ltd. Carbonates of acetylenic alcohols
US5431709A (en) * 1993-09-21 1995-07-11 Gas Research Institute Accretion controlling tuyere
US5458320A (en) * 1993-09-21 1995-10-17 Gas Research Institute Accretion controlling tuyere

Also Published As

Publication number Publication date
JPH0478685B2 (en) 1992-12-11

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