JPS5585611A - Desulfurizing agent for hot iron at outside of furnace - Google Patents

Desulfurizing agent for hot iron at outside of furnace

Info

Publication number
JPS5585611A
JPS5585611A JP15789078A JP15789078A JPS5585611A JP S5585611 A JPS5585611 A JP S5585611A JP 15789078 A JP15789078 A JP 15789078A JP 15789078 A JP15789078 A JP 15789078A JP S5585611 A JPS5585611 A JP S5585611A
Authority
JP
Japan
Prior art keywords
cryolite
carbonaceous material
furnace
cao
outside
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
JP15789078A
Other languages
Japanese (ja)
Inventor
Kunihiko Ishizaka
Takao Koshikawa
Masaaki Tsukamoto
Hiraki Sonoda
Setsuo Tamura
Shigeki Furuya
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 SEKKAI KOGYOSHO KK
JFE Steel Corp
Original Assignee
NIPPON SEKKAI KOGYOSHO KK
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 NIPPON SEKKAI KOGYOSHO KK, Kawasaki Steel Corp filed Critical NIPPON SEKKAI KOGYOSHO KK
Priority to JP15789078A priority Critical patent/JPS5585611A/en
Publication of JPS5585611A publication Critical patent/JPS5585611A/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 a desulfurizing agent for hot iron used at the outside of a furnace, by mixing CaO with a specific ratios of carbonaceous material, cryolite, or Al powder in addn. CONSTITUTION:Quick lime, a main component, is mixed with 3-10% by wt. carbonaceous material, e.g., coke, charcoal, oil coke etc., 2-10% by wt. cryolite, or 3-8% by wt. Al powder in addn. The mixt. is added to pig iron contained in a ladle or a mixer car placed outside a blast furnace. The carbonaceous material serves to maintain reducing atmosphere required for desulfurization, and the cryolite increases the surfacing speed of desulfurization products in the bath. Al oxidizes faster than Si, preventing the consumption of the CaO by the reaction with SiO2 to form 2CaOSiO2. Use of inexpensive CaO in place of expensive CaC2 reduces the desulfurization cost.
JP15789078A 1978-12-20 1978-12-20 Desulfurizing agent for hot iron at outside of furnace Pending JPS5585611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15789078A JPS5585611A (en) 1978-12-20 1978-12-20 Desulfurizing agent for hot iron at outside of furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15789078A JPS5585611A (en) 1978-12-20 1978-12-20 Desulfurizing agent for hot iron at outside of furnace

Publications (1)

Publication Number Publication Date
JPS5585611A true JPS5585611A (en) 1980-06-27

Family

ID=15659644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15789078A Pending JPS5585611A (en) 1978-12-20 1978-12-20 Desulfurizing agent for hot iron at outside of furnace

Country Status (1)

Country Link
JP (1) JPS5585611A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61210111A (en) * 1985-03-14 1986-09-18 Nippon Kokan Kk <Nkk> Method for removing sulfur in molten iron in midway of tapping spout
WO1998045484A1 (en) * 1997-04-07 1998-10-15 Reactive Metals & Alloys Corporation Desulfurizing mix and method for desulfurizing molten iron
JP2007302961A (en) * 2006-05-12 2007-11-22 Nisshin Steel Co Ltd Desulfurization refining agent and desulfurization method for Cr-containing hot metal
US7731778B2 (en) 2006-03-27 2010-06-08 Magnesium Technologies Corporation Scrap bale for steel making process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5269811A (en) * 1975-12-09 1977-06-10 Hirai Tomisaburou Molten piggiron dephosphorising composites
JPS52111813A (en) * 1976-03-18 1977-09-19 Nippon Steel Corp Composite for desulfurization of molten pig iron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5269811A (en) * 1975-12-09 1977-06-10 Hirai Tomisaburou Molten piggiron dephosphorising composites
JPS52111813A (en) * 1976-03-18 1977-09-19 Nippon Steel Corp Composite for desulfurization of molten pig iron

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61210111A (en) * 1985-03-14 1986-09-18 Nippon Kokan Kk <Nkk> Method for removing sulfur in molten iron in midway of tapping spout
WO1998045484A1 (en) * 1997-04-07 1998-10-15 Reactive Metals & Alloys Corporation Desulfurizing mix and method for desulfurizing molten iron
US5972072A (en) * 1997-04-07 1999-10-26 Reactive Metals & Alloys Corporation Desulfurizing mix
US7731778B2 (en) 2006-03-27 2010-06-08 Magnesium Technologies Corporation Scrap bale for steel making process
JP2007302961A (en) * 2006-05-12 2007-11-22 Nisshin Steel Co Ltd Desulfurization refining agent and desulfurization method for Cr-containing hot metal

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