JPS5524925A - Desulfurizing agent for molten pig iron - Google Patents

Desulfurizing agent for molten pig iron

Info

Publication number
JPS5524925A
JPS5524925A JP9584578A JP9584578A JPS5524925A JP S5524925 A JPS5524925 A JP S5524925A JP 9584578 A JP9584578 A JP 9584578A JP 9584578 A JP9584578 A JP 9584578A JP S5524925 A JPS5524925 A JP S5524925A
Authority
JP
Japan
Prior art keywords
desulfurizing agent
pig iron
desulfurizing
molten pig
cao
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
JP9584578A
Other languages
Japanese (ja)
Inventor
Toshiharu Mitsuo
Takeshi Shoji
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 JP9584578A priority Critical patent/JPS5524925A/en
Publication of JPS5524925A publication Critical patent/JPS5524925A/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:An inexpensive desulfurizing agent for molten pig iron which is capable of giving a desulfurizing effect comparable with that of carbide and also is manufactured by melting, cooling and then pulverizing a mixture of CaO and Al2O3 in a specific proportion. CONSTITUTION:A mixture of 55 to 85wt% CaO and 15 to 45wt% Al2O3 is melted, cooled, and then pulverized into approx. 1 mm or less particles to obtain granular desulfurizing agent. The desulfurizing agent, consisting of 3CaO.Al2O3 matrix crystal and CaO precipitated crystal, has a high reactivity with S present in molten pig iron and therefore takes in high concentrations of S in a short time. Also because the desulfurizing agent does not melt at temperatures below 1500 deg.C, it can perform desulfurizing reaction in the solid state without being melted even if it is charged into an approx. 1300 to 1450 deg.C molten pig iron. Also, its desulfurizing effect and speed are great and fast.
JP9584578A 1978-08-08 1978-08-08 Desulfurizing agent for molten pig iron Pending JPS5524925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9584578A JPS5524925A (en) 1978-08-08 1978-08-08 Desulfurizing agent for molten pig iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9584578A JPS5524925A (en) 1978-08-08 1978-08-08 Desulfurizing agent for molten pig iron

Publications (1)

Publication Number Publication Date
JPS5524925A true JPS5524925A (en) 1980-02-22

Family

ID=14148704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9584578A Pending JPS5524925A (en) 1978-08-08 1978-08-08 Desulfurizing agent for molten pig iron

Country Status (1)

Country Link
JP (1) JPS5524925A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541310A1 (en) * 1983-02-18 1984-08-24 Lafarge Fondu Int Method for manufacturing steel-desulphurisation slag
JP2017071854A (en) * 2015-10-05 2017-04-13 Ｊｆｅスチール株式会社 Desulfurization agent, mechanical agitation type molten iron desulfurization method and manufacturing method of desulfurized molten iron
CN115219373A (en) * 2021-04-20 2022-10-21 中国石油化工股份有限公司 Evaluation device and evaluation method for desulfurization effect of renewable desulfurizer
CN115433844A (en) * 2022-08-16 2022-12-06 中国科学院金属研究所 A preparation method of ultra-low sulfur superalloy based on efficient solid-liquid reaction of oxide and melt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124616A (en) * 1976-04-12 1977-10-19 Shin Meiwa Ind Co Ltd Device for automatically opening and closing rear frame of luggage car rier for dump truck

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124616A (en) * 1976-04-12 1977-10-19 Shin Meiwa Ind Co Ltd Device for automatically opening and closing rear frame of luggage car rier for dump truck

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541310A1 (en) * 1983-02-18 1984-08-24 Lafarge Fondu Int Method for manufacturing steel-desulphurisation slag
JP2017071854A (en) * 2015-10-05 2017-04-13 Ｊｆｅスチール株式会社 Desulfurization agent, mechanical agitation type molten iron desulfurization method and manufacturing method of desulfurized molten iron
CN115219373A (en) * 2021-04-20 2022-10-21 中国石油化工股份有限公司 Evaluation device and evaluation method for desulfurization effect of renewable desulfurizer
CN115433844A (en) * 2022-08-16 2022-12-06 中国科学院金属研究所 A preparation method of ultra-low sulfur superalloy based on efficient solid-liquid reaction of oxide and melt

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