JPS56123319A - Production of extra low sulfur steel - Google Patents

Production of extra low sulfur steel

Info

Publication number
JPS56123319A
JPS56123319A JP2613480A JP2613480A JPS56123319A JP S56123319 A JPS56123319 A JP S56123319A JP 2613480 A JP2613480 A JP 2613480A JP 2613480 A JP2613480 A JP 2613480A JP S56123319 A JPS56123319 A JP S56123319A
Authority
JP
Japan
Prior art keywords
steel
slag
molten steel
ladle
converter
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
JP2613480A
Other languages
Japanese (ja)
Other versions
JPS6157372B2 (en
Inventor
Yoshio Miyashita
Tsutomu Usui
Kiyomi Taguchi
Masayuki Hanmiyo
Haruyoshi Tanabe
Kenzo Yamada
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
NKK Corp
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
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP2613480A priority Critical patent/JPS56123319A/en
Publication of JPS56123319A publication Critical patent/JPS56123319A/en
Publication of JPS6157372B2 publication Critical patent/JPS6157372B2/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

  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE: To produce a large amount of extra low sulfur steel inexpensively and stably without powder blowing into molten steel by adding a synthetic slag making agent such as CaO-SiO2 having a m.p. below prescribed m.p. at a prescribed amount to the molten steel during desulfurization of the molten steel tapped from a converter to a ladle.
CONSTITUTION: After limestone is added to the molten steel which is being tapped from a converter to a ladle. Upon ending of the tapping after this, Al is added to modify the ladle slag to high desulfurization ability slag. Thence, this slag and the molten steel are strongly stirred and mixed by blowing an Ar gas thereto in an oxidation-free atmosphere of ≤1% O2 concn., whereby the steel is desulfurized. Here, only in the case when the rate of outflow of the converter slag from the converter to the ladle is ≤5kg per ton of steel, the next synthetic resin is added at 1W5kg per ton of the steel at the tapping or right after the end of the tapping. As a result, a high desulfurization rate of ≥70% is stably obtained. The synthetic slagging agent of CaO-SiO2 base (40W60%, CaO, 40W60%; SiO2) of ≤1,550°C m.p. is used for said slagging agent. The concn. of S in the resultant extra low sulfur steel is ≤0.0009%.
COPYRIGHT: (C)1981,JPO&Japio
JP2613480A 1980-03-04 1980-03-04 Production of extra low sulfur steel Granted JPS56123319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2613480A JPS56123319A (en) 1980-03-04 1980-03-04 Production of extra low sulfur steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2613480A JPS56123319A (en) 1980-03-04 1980-03-04 Production of extra low sulfur steel

Publications (2)

Publication Number Publication Date
JPS56123319A true JPS56123319A (en) 1981-09-28
JPS6157372B2 JPS6157372B2 (en) 1986-12-06

Family

ID=12185077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2613480A Granted JPS56123319A (en) 1980-03-04 1980-03-04 Production of extra low sulfur steel

Country Status (1)

Country Link
JP (1) JPS56123319A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63100122A (en) * 1986-05-07 1988-05-02 Nippon Steel Corp Method for desulfurizing molten steel in ladle
JPH05331524A (en) * 1992-05-27 1993-12-14 Kawasaki Steel Corp Method for melting ultralow sulfur and ultralow carbon steel
CN102876848A (en) * 2012-06-28 2013-01-16 辽宁中汇环保科技有限公司 Method for producing low sulphur steel through carrying out CAS-OB refining on premelting calcium aluminate
CN103205524A (en) * 2013-04-15 2013-07-17 攀钢集团攀枝花钢铁研究院有限公司 Method for smelting low-sulfur steel from semi-steel
JP2014527581A (en) * 2012-07-19 2014-10-16 中国科学院金属研究所 Method of controlling A segregation of steel ingot by cleaning molten steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6372785U (en) * 1986-10-27 1988-05-16

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63100122A (en) * 1986-05-07 1988-05-02 Nippon Steel Corp Method for desulfurizing molten steel in ladle
JPH05331524A (en) * 1992-05-27 1993-12-14 Kawasaki Steel Corp Method for melting ultralow sulfur and ultralow carbon steel
CN102876848A (en) * 2012-06-28 2013-01-16 辽宁中汇环保科技有限公司 Method for producing low sulphur steel through carrying out CAS-OB refining on premelting calcium aluminate
JP2014527581A (en) * 2012-07-19 2014-10-16 中国科学院金属研究所 Method of controlling A segregation of steel ingot by cleaning molten steel
CN103205524A (en) * 2013-04-15 2013-07-17 攀钢集团攀枝花钢铁研究院有限公司 Method for smelting low-sulfur steel from semi-steel
CN103205524B (en) * 2013-04-15 2015-04-15 攀钢集团攀枝花钢铁研究院有限公司 Method for smelting low-sulfur steel from semi-steel

Also Published As

Publication number Publication date
JPS6157372B2 (en) 1986-12-06

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