JPS57123906A - Method for recovering iron content from high basicity slag - Google Patents

Method for recovering iron content from high basicity slag

Info

Publication number
JPS57123906A
JPS57123906A JP885681A JP885681A JPS57123906A JP S57123906 A JPS57123906 A JP S57123906A JP 885681 A JP885681 A JP 885681A JP 885681 A JP885681 A JP 885681A JP S57123906 A JPS57123906 A JP S57123906A
Authority
JP
Japan
Prior art keywords
iron
molten
slag
molten slag
basicity
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
JP885681A
Other languages
Japanese (ja)
Other versions
JPS6130010B2 (en
Inventor
Morihiro Sumita
Hiroyuki Nakajima
Takao Morita
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 JP885681A priority Critical patent/JPS57123906A/en
Publication of JPS57123906A publication Critical patent/JPS57123906A/en
Publication of JPS6130010B2 publication Critical patent/JPS6130010B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To separate and recover the iron contents contained in high basic molten slag by adding new molten iron and a slag modifier to the high basicity molten slag formed in preliminary dephosphorization reaction of molten iron. CONSTITUTION:Molten iron is dephosphorized with a dephosphorizer consisting of iron oxide, CaO, CaF2, etc. and is fed to a steel making installation such as converter. The molten slag of dephosphorization produced at this time has basicity as high as 3-5, and has high viscosity; therefore a large amt. of granular iron is contained therein. This molten slag is separated into a ladle, and new molten iron and a slag modifier such as mill scale are added thereto. The added molten iron is desiliconized to form SiO2, whereby the basicity of the high basic molten slag is lowered, the viscosity of the molten slag is lowered, and the granular iron contained therein is settled and separated, thus it is recovered into the molten iron. After the removal of this molten slag, the desiliconized molten iron is dephosphorized, and is fed to the converter. The molten slag of dephosphorization is subjected to the above-mentioned treatment, whereby the iron contents therein are recovered.
JP885681A 1981-01-23 1981-01-23 Method for recovering iron content from high basicity slag Granted JPS57123906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP885681A JPS57123906A (en) 1981-01-23 1981-01-23 Method for recovering iron content from high basicity slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP885681A JPS57123906A (en) 1981-01-23 1981-01-23 Method for recovering iron content from high basicity slag

Publications (2)

Publication Number Publication Date
JPS57123906A true JPS57123906A (en) 1982-08-02
JPS6130010B2 JPS6130010B2 (en) 1986-07-10

Family

ID=11704361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP885681A Granted JPS57123906A (en) 1981-01-23 1981-01-23 Method for recovering iron content from high basicity slag

Country Status (1)

Country Link
JP (1) JPS57123906A (en)

Also Published As

Publication number Publication date
JPS6130010B2 (en) 1986-07-10

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