JPS5644709A - Softening method of steel making slag - Google Patents

Softening method of steel making slag

Info

Publication number
JPS5644709A
JPS5644709A JP11809979A JP11809979A JPS5644709A JP S5644709 A JPS5644709 A JP S5644709A JP 11809979 A JP11809979 A JP 11809979A JP 11809979 A JP11809979 A JP 11809979A JP S5644709 A JPS5644709 A JP S5644709A
Authority
JP
Japan
Prior art keywords
slag
steel making
making slag
fluidity
sio
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
JP11809979A
Other languages
Japanese (ja)
Other versions
JPS5719166B2 (en
Inventor
Shunji Sato
Isao Tozawa
Shinobu Hoshijima
Hideaki Suito
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.)
RIKEN KOGYO KK
Original Assignee
RIKEN KOGYO KK
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 RIKEN KOGYO KK filed Critical RIKEN KOGYO KK
Priority to JP11809979A priority Critical patent/JPS5644709A/en
Publication of JPS5644709A publication Critical patent/JPS5644709A/en
Publication of JPS5719166B2 publication Critical patent/JPS5719166B2/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

  • Furnace Details (AREA)

Abstract

PURPOSE: To lower the melting point of slag, improve fluidity and prevent any fault owing to the slag from occuring in the next process by adding silicic acid and iron oxide at the specific ratios to the steel making slag.
CONSTITUTION: Steel making slag containing unslagged lime or magnesia or containing much CaO has high melting points and poor fluidity; therefore if this is flowed into the next process, its discharge is difficult and this becomes the cause for various faults. In order to prevent this, SiO2-base ore, fly ash, etc. as well as iron scraps, iron ore, etc. are added to the steel making slag so that the composition of the slag becomes CaO<10W35%, SiO2<5%, FeO; 60W90%. In addition, a melting point lowering agent such as alkali metals, compounds of alkaline earth metals, fluorides, alkali carbonate and borate is added thereto, besides the above. These additives are blown together with a desulfurizer into the molten steel 3 through a lance 1, whereby the fluidity of the molten slag 4 may be improved and the desulfurizing effect may be improved.
COPYRIGHT: (C)1981,JPO&Japio
JP11809979A 1979-09-14 1979-09-14 Softening method of steel making slag Granted JPS5644709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11809979A JPS5644709A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11809979A JPS5644709A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Publications (2)

Publication Number Publication Date
JPS5644709A true JPS5644709A (en) 1981-04-24
JPS5719166B2 JPS5719166B2 (en) 1982-04-21

Family

ID=14727971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11809979A Granted JPS5644709A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Country Status (1)

Country Link
JP (1) JPS5644709A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759862B1 (en) 2006-06-30 2007-09-18 요업기술원 Steel refinery flux composition of low temperature form
KR100875448B1 (en) 2007-06-14 2008-12-22 한국산업기술평가원(관리부서:요업기술원) Low-temperature solvent composition for steel refining using fly ash
CN113234990A (en) * 2021-05-17 2021-08-10 宝武集团鄂城钢铁有限公司 Smelting method for improving fluidity of molten steel after refining and desulfurizing deformed steel bar

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118098A (en) * 1978-03-03 1979-09-13 Bridgestone Corp Fender using cylindrical drum as impact receiving surface and its preparation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118098A (en) * 1978-03-03 1979-09-13 Bridgestone Corp Fender using cylindrical drum as impact receiving surface and its preparation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759862B1 (en) 2006-06-30 2007-09-18 요업기술원 Steel refinery flux composition of low temperature form
KR100875448B1 (en) 2007-06-14 2008-12-22 한국산업기술평가원(관리부서:요업기술원) Low-temperature solvent composition for steel refining using fly ash
CN113234990A (en) * 2021-05-17 2021-08-10 宝武集团鄂城钢铁有限公司 Smelting method for improving fluidity of molten steel after refining and desulfurizing deformed steel bar

Also Published As

Publication number Publication date
JPS5719166B2 (en) 1982-04-21

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