JPS5693806A - Dephosphorization agent for hot metal - Google Patents

Dephosphorization agent for hot metal

Info

Publication number
JPS5693806A
JPS5693806A JP17027079A JP17027079A JPS5693806A JP S5693806 A JPS5693806 A JP S5693806A JP 17027079 A JP17027079 A JP 17027079A JP 17027079 A JP17027079 A JP 17027079A JP S5693806 A JPS5693806 A JP S5693806A
Authority
JP
Japan
Prior art keywords
sio2
hot metal
mainly consisting
cao
powder material
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
JP17027079A
Other languages
Japanese (ja)
Inventor
Hitoshi Ono
Tamenori Masui
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 JP17027079A priority Critical patent/JPS5693806A/en
Publication of JPS5693806A publication Critical patent/JPS5693806A/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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • C21C1/025—Agents used for dephosphorising or desulfurising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To provide an inexpensive, highly-effective dephosphorization agent for hot metal by mixing and baking two powder materials; one mainly consisting of CaO and the other mainly of SiO2. CONSTITUTION:To a powder material mainly consisting of CaO, such as quick lime powder, a powder material mainly consisting of SiO2 is added and mixed so that CaO/SiO2 molar ratio becomes 1.8-2.3. The mixture is baked at a temperature higher than 1,300 deg.C thereby preparing a dephosphorization agent for hot metal. This agent has composition of 2CaO.SiO2, a very high purity, and excellent dephosphorization capability. The powder material mainly consisting of SiO2 is a SiO2 mineral such as silica or silica sand, among which one with less than 20% of impurity is used under the baking condition described above.
JP17027079A 1979-12-28 1979-12-28 Dephosphorization agent for hot metal Pending JPS5693806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17027079A JPS5693806A (en) 1979-12-28 1979-12-28 Dephosphorization agent for hot metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17027079A JPS5693806A (en) 1979-12-28 1979-12-28 Dephosphorization agent for hot metal

Publications (1)

Publication Number Publication Date
JPS5693806A true JPS5693806A (en) 1981-07-29

Family

ID=15901817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17027079A Pending JPS5693806A (en) 1979-12-28 1979-12-28 Dephosphorization agent for hot metal

Country Status (1)

Country Link
JP (1) JPS5693806A (en)

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