JPS5562111A - Molten pig iron desulfurizing agent - Google Patents

Molten pig iron desulfurizing agent

Info

Publication number
JPS5562111A
JPS5562111A JP13442878A JP13442878A JPS5562111A JP S5562111 A JPS5562111 A JP S5562111A JP 13442878 A JP13442878 A JP 13442878A JP 13442878 A JP13442878 A JP 13442878A JP S5562111 A JPS5562111 A JP S5562111A
Authority
JP
Japan
Prior art keywords
calcium
calcium carbide
pig iron
granular
desulfurization
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
JP13442878A
Other languages
Japanese (ja)
Inventor
Masaomi Hayakawa
Shuichi Ito
Takayuki Takagi
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.)
Ibiden Co Ltd
Ibigawa Electric Industry Co Ltd
Original Assignee
Ibiden Co Ltd
Ibigawa Electric Industry Co Ltd
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 Ibiden Co Ltd, Ibigawa Electric Industry Co Ltd filed Critical Ibiden Co Ltd
Priority to JP13442878A priority Critical patent/JPS5562111A/en
Publication of JPS5562111A publication Critical patent/JPS5562111A/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:Molten pig iron desulfurizing agent, composed of calcium carbide and calcium cyanamide having each specific extent grain diameter and fluorite and heightened desulfurizing reaction efficiency remarkably. CONSTITUTION:Molten pig iron desulfurizing agent composed of fine granular calcium carbide having 0.1-5mm of grain diameter, obtained by crushing the calcium carbide block usually used for desulfurization, coarse granular calcium cyanamide having 3-15mm of grain diameter, oftained by crushing the calcium cyanamide block for fertilizer on the market and powdered or granular fluorite having 5mm or less of grain diameter. Also, weight ratio of calcium cyanamide against calcium carbide, is 20/80-65/35 and that of fluorite against total amount of calcium carbide and calcium cyanamide, is 3-15wt%. On occasion of using the above desulfurizing agent for desulfurization of the molten pig iron, granular calcium cyanamide is melted immediately and granular calcium carbide is dessolved and then, both and made molten state. Accordingly, desulfurization reaction is carried out in the liquid-liquid state and reaction velocity of desulfurization of calcium carbide is accelerated remarkably.
JP13442878A 1978-11-02 1978-11-02 Molten pig iron desulfurizing agent Pending JPS5562111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13442878A JPS5562111A (en) 1978-11-02 1978-11-02 Molten pig iron desulfurizing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13442878A JPS5562111A (en) 1978-11-02 1978-11-02 Molten pig iron desulfurizing agent

Publications (1)

Publication Number Publication Date
JPS5562111A true JPS5562111A (en) 1980-05-10

Family

ID=15128142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13442878A Pending JPS5562111A (en) 1978-11-02 1978-11-02 Molten pig iron desulfurizing agent

Country Status (1)

Country Link
JP (1) JPS5562111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156836A (en) * 1980-05-08 1981-12-03 Minolta Camera Co Ltd Electrophotographic receptor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156836A (en) * 1980-05-08 1981-12-03 Minolta Camera Co Ltd Electrophotographic receptor

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