JPS56146808A - Refining method steel making slag - Google Patents

Refining method steel making slag

Info

Publication number
JPS56146808A
JPS56146808A JP4829280A JP4829280A JPS56146808A JP S56146808 A JPS56146808 A JP S56146808A JP 4829280 A JP4829280 A JP 4829280A JP 4829280 A JP4829280 A JP 4829280A JP S56146808 A JPS56146808 A JP S56146808A
Authority
JP
Japan
Prior art keywords
slag
steel making
ash
molten
acidic soil
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.)
Pending
Application number
JP4829280A
Other languages
Japanese (ja)
Inventor
Kazuo Kawamura
Naoani Hirai
Yoshiichi Nagao
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 JP4829280A priority Critical patent/JPS56146808A/en
Publication of JPS56146808A publication Critical patent/JPS56146808A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/36—Processes yielding slags of special composition
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE:To recycle steel making slag as road metal and reclaiming material by adding coal ash or acidic soil to molten steel making slag followed by granulation. CONSTITUTION:To molten slag such as molten converter slag produced in steel making and refining is added 2-10% coal ash such as clinker ash or fly ash discharged from a thermoelectric power plant. Acidic soil with high SiO2 content such as red mud is added in place of the ash. They are then kneaded and granulated. Since free CaO in the steel making slag is converted into a stable mineral phase with the coal ash or SiO2 in the acidic soil, the hygroscopic weathering of the slag due to free CaO can be prevented to allow the slag to keep the granular shape. Accordingly, slag, fly ash and red mud requiring a large dumping ground can be recycled effectively as road metal and reclaiming material.
JP4829280A 1980-04-12 1980-04-12 Refining method steel making slag Pending JPS56146808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4829280A JPS56146808A (en) 1980-04-12 1980-04-12 Refining method steel making slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4829280A JPS56146808A (en) 1980-04-12 1980-04-12 Refining method steel making slag

Publications (1)

Publication Number Publication Date
JPS56146808A true JPS56146808A (en) 1981-11-14

Family

ID=12799356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4829280A Pending JPS56146808A (en) 1980-04-12 1980-04-12 Refining method steel making slag

Country Status (1)

Country Link
JP (1) JPS56146808A (en)

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