JPS5499027A - Slag reduction accelerating method in steel manufacturing electric arc furnace - Google Patents

Slag reduction accelerating method in steel manufacturing electric arc furnace

Info

Publication number
JPS5499027A
JPS5499027A JP529678A JP529678A JPS5499027A JP S5499027 A JPS5499027 A JP S5499027A JP 529678 A JP529678 A JP 529678A JP 529678 A JP529678 A JP 529678A JP S5499027 A JPS5499027 A JP S5499027A
Authority
JP
Japan
Prior art keywords
slag
furnace
flame
reduction
electric arc
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.)
Pending
Application number
JP529678A
Other languages
Japanese (ja)
Inventor
Hiroyuki Katayama
Minoru Inatomi
Hiroyuki Kajioka
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 JP529678A priority Critical patent/JPS5499027A/en
Publication of JPS5499027A publication Critical patent/JPS5499027A/en
Pending 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

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To efficiently accelerate reduction of slag in an electric arc furnace and to increase the range of use of the furnace by spraying an imperfect combustion flame whose spray angle and oxygen ratio are specified, upon the slag layer in the furnace. CONSTITUTION:In case oxidizing slag is formed in a steel manufacturing electric are furnace, an imperfect combustion flame is sprayed upon the slag layer while regulating the oxygen ratio (the speed of supplying oxygen to a burner / the speed of supplying oxygen required for perfect combustion) to below 0.85 and the flame spray angle of the burner to 30-70 deg.. Thus, the part of the slag surface which part is in direct contact with the flame is stirred, reduction of the slag is accelerated, and heat is supplied to the reaction part to further accelerate the reduction. In addn., reoxidation of molten steel and oxidation consumption of reducing agent due to the surrounding atmosphere are inhibited.
JP529678A 1978-01-23 1978-01-23 Slag reduction accelerating method in steel manufacturing electric arc furnace Pending JPS5499027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP529678A JPS5499027A (en) 1978-01-23 1978-01-23 Slag reduction accelerating method in steel manufacturing electric arc furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP529678A JPS5499027A (en) 1978-01-23 1978-01-23 Slag reduction accelerating method in steel manufacturing electric arc furnace

Publications (1)

Publication Number Publication Date
JPS5499027A true JPS5499027A (en) 1979-08-04

Family

ID=11607273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP529678A Pending JPS5499027A (en) 1978-01-23 1978-01-23 Slag reduction accelerating method in steel manufacturing electric arc furnace

Country Status (1)

Country Link
JP (1) JPS5499027A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101159969B1 (en) 2010-05-28 2012-06-26 현대제철 주식회사 lance apparatus of electric furnace
JP2020094707A (en) * 2018-12-10 2020-06-18 日本製鉄株式会社 Gas ejection device in electric furnace, and gas ejection method
JP2020094775A (en) * 2018-12-14 2020-06-18 日本製鉄株式会社 Gas ejection device in electric furnace, and gas ejection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101159969B1 (en) 2010-05-28 2012-06-26 현대제철 주식회사 lance apparatus of electric furnace
JP2020094707A (en) * 2018-12-10 2020-06-18 日本製鉄株式会社 Gas ejection device in electric furnace, and gas ejection method
JP2020094775A (en) * 2018-12-14 2020-06-18 日本製鉄株式会社 Gas ejection device in electric furnace, and gas ejection method

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