JPS5665906A - Method of utilizing converter slag for modification of blast furnace slag - Google Patents

Method of utilizing converter slag for modification of blast furnace slag

Info

Publication number
JPS5665906A
JPS5665906A JP14120579A JP14120579A JPS5665906A JP S5665906 A JPS5665906 A JP S5665906A JP 14120579 A JP14120579 A JP 14120579A JP 14120579 A JP14120579 A JP 14120579A JP S5665906 A JPS5665906 A JP S5665906A
Authority
JP
Japan
Prior art keywords
slag
molten
mixed
blast furnace
weathering
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
JP14120579A
Other languages
Japanese (ja)
Other versions
JPS5730828B2 (en
Inventor
Yoshihide Kato
Kyoji Nakanishi
Osamu Haida
Tsutomu Nozaki
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 Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP14120579A priority Critical patent/JPS5665906A/en
Publication of JPS5665906A publication Critical patent/JPS5665906A/en
Publication of JPS5730828B2 publication Critical patent/JPS5730828B2/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
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/42—Sulphur removal
    • 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
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/028—Methods of cooling or quenching molten slag with the permanent addition of cooled slag or other solids
    • 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
    • C21B2400/034—Stirring or agitating by pressurised fluids or by moving apparatus
    • 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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE:To prevent the mixed slag after solidification from producing yellow water or collapsing by weathering by blowing oxygen to molten mixed slag at the time of mixing molten converter slag into molten blast furnace slag and producing road bed materials and road construction materials. CONSTITUTION:Molten converter slag of poor fluidity of <=17% T and Fe is added and mixed to molten blast furnace slag in such a manner that it becomes 30- 80wt%. Oxygen gas is blown into this mixed slag or is sprayed thereto to cause exothermic reaction with the Fe and S in the molten slag, whereby the fluidity of the molten mixed slag is improved and the mixed slag is uniformly mixed; at the same time, S is converted to SO2 and the molten mixed slag is gas stirred to assist the mixing and decrease the S content. Since the molten mixed slag is sufficiently mixed and is desulfurized, it does not produce any yellow color after the solidification and the collapsing by weathering owing to the unslagged CaO does not occur.
JP14120579A 1979-11-02 1979-11-02 Method of utilizing converter slag for modification of blast furnace slag Granted JPS5665906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14120579A JPS5665906A (en) 1979-11-02 1979-11-02 Method of utilizing converter slag for modification of blast furnace slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14120579A JPS5665906A (en) 1979-11-02 1979-11-02 Method of utilizing converter slag for modification of blast furnace slag

Publications (2)

Publication Number Publication Date
JPS5665906A true JPS5665906A (en) 1981-06-04
JPS5730828B2 JPS5730828B2 (en) 1982-07-01

Family

ID=15286580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14120579A Granted JPS5665906A (en) 1979-11-02 1979-11-02 Method of utilizing converter slag for modification of blast furnace slag

Country Status (1)

Country Link
JP (1) JPS5665906A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886150A (en) * 2010-07-07 2010-11-17 江苏沙钢集团有限公司 Recycling method and system for steel ladle pouring afterheat-state steel slag
CN102559960A (en) * 2012-03-13 2012-07-11 北京联合荣大工程材料有限责任公司 Steel slag treating method
CN102676743A (en) * 2012-05-23 2012-09-19 莱芜钢铁集团有限公司 Step-by-step returning recycling method of LF (Lactoferrin) refining slag in thermal state
CN102719577A (en) * 2012-06-29 2012-10-10 中冶南方工程技术有限公司 Method for coupling iron-making and steelmaking slag
CN102766725A (en) * 2012-08-02 2012-11-07 山西太钢不锈钢股份有限公司 Thermal state utilization method of stainless steel continuous casting residue

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886150A (en) * 2010-07-07 2010-11-17 江苏沙钢集团有限公司 Recycling method and system for steel ladle pouring afterheat-state steel slag
CN102559960A (en) * 2012-03-13 2012-07-11 北京联合荣大工程材料有限责任公司 Steel slag treating method
CN102676743A (en) * 2012-05-23 2012-09-19 莱芜钢铁集团有限公司 Step-by-step returning recycling method of LF (Lactoferrin) refining slag in thermal state
CN102719577A (en) * 2012-06-29 2012-10-10 中冶南方工程技术有限公司 Method for coupling iron-making and steelmaking slag
CN102766725A (en) * 2012-08-02 2012-11-07 山西太钢不锈钢股份有限公司 Thermal state utilization method of stainless steel continuous casting residue

Also Published As

Publication number Publication date
JPS5730828B2 (en) 1982-07-01

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