JPS5591909A - Decarburizing method for molten cast iron - Google Patents

Decarburizing method for molten cast iron

Info

Publication number
JPS5591909A
JPS5591909A JP16253878A JP16253878A JPS5591909A JP S5591909 A JPS5591909 A JP S5591909A JP 16253878 A JP16253878 A JP 16253878A JP 16253878 A JP16253878 A JP 16253878A JP S5591909 A JPS5591909 A JP S5591909A
Authority
JP
Japan
Prior art keywords
cast iron
molten cast
furnace
slag
decarburization
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
JP16253878A
Other languages
Japanese (ja)
Other versions
JPS60403B2 (en
Inventor
Norizo Futasugi
Kazumasa Umezawa
Ryoshi Arima
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 JP16253878A priority Critical patent/JPS60403B2/en
Priority to US06/085,255 priority patent/US4295882A/en
Priority to CA000338106A priority patent/CA1136421A/en
Priority to BR7906836A priority patent/BR7906836A/en
Priority to DE2942779A priority patent/DE2942779C2/en
Priority to FR7926431A priority patent/FR2439821A1/en
Priority to GB7936945A priority patent/GB2045281B/en
Publication of JPS5591909A publication Critical patent/JPS5591909A/en
Publication of JPS60403B2 publication Critical patent/JPS60403B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make the size of a decarburizing furnace smaller, by putting molten cast iron contg. limited contents of C, Si, P and S into a crucible-shaped decarburization furnace to occupy a specific ratio of the furnace volume, by feeding O2 on the surface of the molten cast iron without addn. of slag making material, and by introducing a gas into the lower part of the molten cast iron in order to conduct compulsive agitation.
CONSTITUTION: Molten cast iron contg. ≥3.8% C, a trace amount of Si, ≤0.025% P, ≤0.02% S, is put into a crucible-shaped decarburizing furnace to 25W60% of the furnace vol. Then decarburization is conducted by blowing O2 on the surface of the molten cast iron without addn. of slag making material, and by introducing stirring gas such as N2 or air into the lower part of the molten cast iron in order to stir the cast iron. Because no slag is added, this method makes possible the decarburization without slag at a high furnace vol. efficiency in the absence of CaO and MgO, which are the main components of the slag formed by conventional methods.
COPYRIGHT: (C)1980,JPO&Japio
JP16253878A 1978-10-24 1978-12-30 Hot metal decarburization method Expired JPS60403B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP16253878A JPS60403B2 (en) 1978-12-30 1978-12-30 Hot metal decarburization method
US06/085,255 US4295882A (en) 1978-10-24 1979-10-16 Steel making process
CA000338106A CA1136421A (en) 1978-10-24 1979-10-22 Steelmaking process
BR7906836A BR7906836A (en) 1978-10-24 1979-10-23 STEEL MANUFACTURING PROCESS
DE2942779A DE2942779C2 (en) 1978-10-24 1979-10-23 Process for the production of steel
FR7926431A FR2439821A1 (en) 1978-10-24 1979-10-24 PROCESS FOR THE MANUFACTURE OF STEEL
GB7936945A GB2045281B (en) 1978-10-24 1979-10-24 Multi stage conversion of crude iron to steel with minimised slag production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16253878A JPS60403B2 (en) 1978-12-30 1978-12-30 Hot metal decarburization method

Publications (2)

Publication Number Publication Date
JPS5591909A true JPS5591909A (en) 1980-07-11
JPS60403B2 JPS60403B2 (en) 1985-01-08

Family

ID=15756506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16253878A Expired JPS60403B2 (en) 1978-10-24 1978-12-30 Hot metal decarburization method

Country Status (1)

Country Link
JP (1) JPS60403B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792120A (en) * 1980-11-28 1982-06-08 Nippon Kokan Kk <Nkk> Steel making method by converter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60233206A (en) * 1984-05-01 1985-11-19 松岡　良市 Artificial turf constitution and artificial turf using the same
JPS61242203A (en) * 1985-04-16 1986-10-28 松岡　良市 Artificial turf

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792120A (en) * 1980-11-28 1982-06-08 Nippon Kokan Kk <Nkk> Steel making method by converter

Also Published As

Publication number Publication date
JPS60403B2 (en) 1985-01-08

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