JPS54134013A - Reforming of converter refining slag - Google Patents

Reforming of converter refining slag

Info

Publication number
JPS54134013A
JPS54134013A JP4244078A JP4244078A JPS54134013A JP S54134013 A JPS54134013 A JP S54134013A JP 4244078 A JP4244078 A JP 4244078A JP 4244078 A JP4244078 A JP 4244078A JP S54134013 A JPS54134013 A JP S54134013A
Authority
JP
Japan
Prior art keywords
slag
steel
sic
molten
converter
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
JP4244078A
Other languages
Japanese (ja)
Other versions
JPS6031883B2 (en
Inventor
Minoru Kitamura
Toshiyuki Soejima
Tsutomu Hayashi
Hideo Matsui
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 JP4244078A priority Critical patent/JPS6031883B2/en
Publication of JPS54134013A publication Critical patent/JPS54134013A/en
Publication of JPS6031883B2 publication Critical patent/JPS6031883B2/en
Expired 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/36—Processes yielding slags of special composition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE:To reduce trouble with molten slag, stabilize the components of molten metal, raise the yield of alloying elements, and lengthen the life of ladle refractory by reforming the molten slag by adding free carbon-containing SiC when or after taking steel out of converter. CONSTITUTION:SiC containing 3 to 15% free carbon is added to molten metal when or after taking steel out of converter, whereupon SiC is decomposed into Si and C which are dissolved in steel on the one hand and also reacted with O present in steel to remove acid on the other. The SiO2 formed from the reactions Si + O (SiO2) and C + O CO buoys up to form slag, while CO also buoys up in the form of bubbles to make the slag porous. And, C formed by the decompositon of SiC and the free C are dissolved in steel to contribute the removal of acids, while the remainder buoys up and reacts with the converter slag to reduce FeO present in the slag. Thus, FeO, which is the most harmful component consuming the alloying elements in molten steel by the reaction FeO + C Fe + CO, can be reduced. Furthermore, the reactivity of the slag can be greatly reduced and the life of ladle refractory can be lengthened.
JP4244078A 1978-04-10 1978-04-10 Method for reforming converter slag Expired JPS6031883B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4244078A JPS6031883B2 (en) 1978-04-10 1978-04-10 Method for reforming converter slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4244078A JPS6031883B2 (en) 1978-04-10 1978-04-10 Method for reforming converter slag

Publications (2)

Publication Number Publication Date
JPS54134013A true JPS54134013A (en) 1979-10-18
JPS6031883B2 JPS6031883B2 (en) 1985-07-25

Family

ID=12636123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4244078A Expired JPS6031883B2 (en) 1978-04-10 1978-04-10 Method for reforming converter slag

Country Status (1)

Country Link
JP (1) JPS6031883B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044878U (en) * 1990-04-26 1992-01-17

Also Published As

Publication number Publication date
JPS6031883B2 (en) 1985-07-25

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