JPS56146813A - Refining method for molten steel - Google Patents

Refining method for molten steel

Info

Publication number
JPS56146813A
JPS56146813A JP4826780A JP4826780A JPS56146813A JP S56146813 A JPS56146813 A JP S56146813A JP 4826780 A JP4826780 A JP 4826780A JP 4826780 A JP4826780 A JP 4826780A JP S56146813 A JPS56146813 A JP S56146813A
Authority
JP
Japan
Prior art keywords
steel
molten
slag
molten steel
ladle
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
JP4826780A
Other languages
Japanese (ja)
Other versions
JPS6037846B2 (en
Inventor
Kiyomi Taguchi
Masayuki Hanmiyo
Masaru Ishikawa
Haruyoshi Tanabe
Kenzo Yamada
Tsutomu Usui
Yoshio Miyashita
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 JP55048267A priority Critical patent/JPS6037846B2/en
Publication of JPS56146813A publication Critical patent/JPS56146813A/en
Publication of JPS6037846B2 publication Critical patent/JPS6037846B2/en
Expired 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 stably dephosphorize molten steel in a ladle by raising the temp. of the steel with electric heat in the presence of molten slag having a specified composition, adding sodium metasilicate, and agitating the molten steel with an inert gas.
CONSTITUTION: Molten steel from a steel making furnace such as a converter is received in ladle 2, and molten synthetic slag 4 having a CaO/SiO2 ratio of 1W1.5 is added. Electrode 7 is dipped in molten slag 4 and supplied with electric current to heat molten steel 3 and raise the temp. At this time, the lining of ladle 2 is hardly damaged by melting due to slag 4. Sodium metasilicate is then added from hopper 6, and gaseous Ar is blown into steel 3 through lance 8 to agitate steel 3. Thus, the contact of steel 3 with slag 4 is increased, and steel 3 is dephosphorized with Na2O in the sodium metasilicate.
COPYRIGHT: (C)1981,JPO&Japio
JP55048267A 1980-04-12 1980-04-12 Molten steel refining method Expired JPS6037846B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55048267A JPS6037846B2 (en) 1980-04-12 1980-04-12 Molten steel refining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55048267A JPS6037846B2 (en) 1980-04-12 1980-04-12 Molten steel refining method

Publications (2)

Publication Number Publication Date
JPS56146813A true JPS56146813A (en) 1981-11-14
JPS6037846B2 JPS6037846B2 (en) 1985-08-28

Family

ID=12798655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55048267A Expired JPS6037846B2 (en) 1980-04-12 1980-04-12 Molten steel refining method

Country Status (1)

Country Link
JP (1) JPS6037846B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6191313A (en) * 1984-10-12 1986-05-09 Nippon Kokan Kk <Nkk> Method for refining molten steel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223968A (en) * 1975-08-18 1977-02-23 Seiko Instr & Electronics Ltd Digital alarm watch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223968A (en) * 1975-08-18 1977-02-23 Seiko Instr & Electronics Ltd Digital alarm watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6191313A (en) * 1984-10-12 1986-05-09 Nippon Kokan Kk <Nkk> Method for refining molten steel

Also Published As

Publication number Publication date
JPS6037846B2 (en) 1985-08-28

Similar Documents

Publication Publication Date Title
TW325499B (en) Method and device for operating dual-container electric arc furnace
US4528035A (en) Composition and process to create foaming slag cover for molten steel
ATE156196T1 (en) METHOD FOR DESULFURIZING IRON MELTS WITH MINIMUM SLAG PRODUCTS AND A SUITABLE DEVICE FOR THE SAME
US4373949A (en) Method for increasing vessel lining life for basic oxygen furnaces
JPS56146813A (en) Refining method for molten steel
EP0015396B1 (en) A method for increasing vessel lining life for basic oxygen furnaces
JPS6425938A (en) Refining method for molten steel by arc furnace
KR920004673B1 (en) Process for melting scrap iron sponge iron and solid pig iron
JPS5713110A (en) Dephosphorization treatment of molten iron
JPS56146812A (en) Refining method for molten steel
US1309162A (en) William r
JPS56146814A (en) Refining method for molten steel
SU897882A1 (en) Method of producing low-carbon ferromanganese
JPS54149313A (en) Elevated temperature refining method for molten steel
JPS538310A (en) Reusing method of steel making slag
GB946964A (en) Dephosphorization of melts of ferrous metals
JPS55161016A (en) Refining method for bottom blowing converter
JPS569308A (en) Desulfurization and dephosphorization of molten pig iron
SU1527278A1 (en) Method of regeneration of end slag
JPS5644709A (en) Softening method of steel making slag
SU1416514A1 (en) Steel melting process
SU1008250A1 (en) Method for smelting steel in electric arc furnaces
JPS5644708A (en) Softening method of steel making slag
Miyawaki et al. Process for Desulfurizing Molten Steel
JPS55110742A (en) Smelting method of low carbon molten metal in ladle type smelting furnace