JPS54110912A - Treatment of refining additive - Google Patents

Treatment of refining additive

Info

Publication number
JPS54110912A
JPS54110912A JP1950178A JP1950178A JPS54110912A JP S54110912 A JPS54110912 A JP S54110912A JP 1950178 A JP1950178 A JP 1950178A JP 1950178 A JP1950178 A JP 1950178A JP S54110912 A JPS54110912 A JP S54110912A
Authority
JP
Japan
Prior art keywords
additive
molten steel
refining
steel
cac2
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.)
Granted
Application number
JP1950178A
Other languages
Japanese (ja)
Other versions
JPS5725605B2 (en
Inventor
Toshiyasu Onishi
Kunio Ishimitsu
Kiyoharu Akiizumi
Shuzo Ito
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP1950178A priority Critical patent/JPS54110912A/en
Publication of JPS54110912A publication Critical patent/JPS54110912A/en
Publication of JPS5725605B2 publication Critical patent/JPS5725605B2/ja
Granted 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To exactly prevent the occurrence of the hydrogen defect of steel material by avoiding the intermixture of moisture in molten steel by a procedure in which refining additive containing CaC2 is dehydrated by heating prior to addition. CONSTITUTION:Prior to the addition of a refining additive containing CaC2 to molten steel in a ladle, the additive is heated in the Ar atmosphere. The removal of moisture is made because the calcium hydroxide present in the additive is decomposed into calcium oxide and water. The additive thus dehydrated is blown into the molten steel by means of an inert gas, where good quality steel which is free of white spot fracture can be obtained.
JP1950178A 1978-02-21 1978-02-21 Treatment of refining additive Granted JPS54110912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1950178A JPS54110912A (en) 1978-02-21 1978-02-21 Treatment of refining additive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1950178A JPS54110912A (en) 1978-02-21 1978-02-21 Treatment of refining additive

Publications (2)

Publication Number Publication Date
JPS54110912A true JPS54110912A (en) 1979-08-30
JPS5725605B2 JPS5725605B2 (en) 1982-05-31

Family

ID=12001112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1950178A Granted JPS54110912A (en) 1978-02-21 1978-02-21 Treatment of refining additive

Country Status (1)

Country Link
JP (1) JPS54110912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634020A (en) * 1979-08-29 1981-04-06 Matsushita Electric Ind Co Ltd Controlling device for combustion of gas
CN112125537A (en) * 2020-09-28 2020-12-25 辽宁鑫钙环保科技有限公司 Industrial preparation technology of calcium hydroxide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393808U (en) * 1986-12-10 1988-06-17

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139514A (en) * 1974-06-07 1976-12-01 Sumitomo Metal Ind Ltd Process for producing desulfurizing agents used for steel making
JPS5244716A (en) * 1975-10-07 1977-04-08 Nippon Steel Corp Method of refining molten ferroalloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139514A (en) * 1974-06-07 1976-12-01 Sumitomo Metal Ind Ltd Process for producing desulfurizing agents used for steel making
JPS5244716A (en) * 1975-10-07 1977-04-08 Nippon Steel Corp Method of refining molten ferroalloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634020A (en) * 1979-08-29 1981-04-06 Matsushita Electric Ind Co Ltd Controlling device for combustion of gas
JPS6252213B2 (en) * 1979-08-29 1987-11-04 Matsushita Electric Ind Co Ltd
CN112125537A (en) * 2020-09-28 2020-12-25 辽宁鑫钙环保科技有限公司 Industrial preparation technology of calcium hydroxide

Also Published As

Publication number Publication date
JPS5725605B2 (en) 1982-05-31

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