JPS5644708A - Softening method of steel making slag - Google Patents

Softening method of steel making slag

Info

Publication number
JPS5644708A
JPS5644708A JP11809879A JP11809879A JPS5644708A JP S5644708 A JPS5644708 A JP S5644708A JP 11809879 A JP11809879 A JP 11809879A JP 11809879 A JP11809879 A JP 11809879A JP S5644708 A JPS5644708 A JP S5644708A
Authority
JP
Japan
Prior art keywords
slag
steel making
melting point
sio
cao
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
JP11809879A
Other languages
Japanese (ja)
Other versions
JPS5719165B2 (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 JP11809879A priority Critical patent/JPS5644708A/en
Publication of JPS5644708A publication Critical patent/JPS5644708A/en
Publication of JPS5719165B2 publication Critical patent/JPS5719165B2/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 steel making slag, improve fluidity and prevent the occurrence of any fault in the next process by adding SiO2, Fe2O3, etc. at the specific ratios into steel making slag.
CONSTITUTION: The slag of the time when desulfurization with a CaO-base desulfurizer is performed at the steel making refining has much CaO content, is high in melting temperature and has poor fluidity; hence, it is likely to harden and becomes difficult to discharge in the next process, and these become the cause for various faults. In order to prevent this, SiO2-base ore, fly ash and iron oxide raw materials such as iron scraps and iron ore are charged to the slag in such a manner that the composition thereof becomes CaO<45%, SiO2<60%, FeO<10%. Beside these, a melting point lowering agent such as alkaline metals, compounds of alkaline earth metals, fluorides, alkali carbonate, or borate is added. These are blown together with a desulfurizer into the molten metal 3 in a ladle 2 through a lance 1, whereby the melting point of the slag 4 is lowered and this enables the fluidity to be made enhanced and the desulfurizing efficiency to be improved.
COPYRIGHT: (C)1981,JPO&Japio
JP11809879A 1979-09-14 1979-09-14 Softening method of steel making slag Granted JPS5644708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11809879A JPS5644708A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11809879A JPS5644708A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Publications (2)

Publication Number Publication Date
JPS5644708A true JPS5644708A (en) 1981-04-24
JPS5719165B2 JPS5719165B2 (en) 1982-04-21

Family

ID=14727946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11809879A Granted JPS5644708A (en) 1979-09-14 1979-09-14 Softening method of steel making slag

Country Status (1)

Country Link
JP (1) JPS5644708A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1038566C (en) * 1994-12-23 1998-06-03 冶金工业部钢铁研究总院 Centrifugal casting scoria
CN112575177A (en) * 2020-11-24 2021-03-30 金川集团股份有限公司 Method for reducing melting point and viscosity of colored refractory material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118099A (en) * 1978-03-04 1979-09-13 Yoshio Mizuno Prefabricated boat

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118099A (en) * 1978-03-04 1979-09-13 Yoshio Mizuno Prefabricated boat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1038566C (en) * 1994-12-23 1998-06-03 冶金工业部钢铁研究总院 Centrifugal casting scoria
CN112575177A (en) * 2020-11-24 2021-03-30 金川集团股份有限公司 Method for reducing melting point and viscosity of colored refractory material

Also Published As

Publication number Publication date
JPS5719165B2 (en) 1982-04-21

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