JPS5468713A - Steel making process reducing discharge of slag and enhancing characteristics of the same - Google Patents

Steel making process reducing discharge of slag and enhancing characteristics of the same

Info

Publication number
JPS5468713A
JPS5468713A JP13527577A JP13527577A JPS5468713A JP S5468713 A JPS5468713 A JP S5468713A JP 13527577 A JP13527577 A JP 13527577A JP 13527577 A JP13527577 A JP 13527577A JP S5468713 A JPS5468713 A JP S5468713A
Authority
JP
Japan
Prior art keywords
slag
hot iron
oxygen
steel making
dephosphorization
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
JP13527577A
Other languages
Japanese (ja)
Other versions
JPS5625494B2 (en
Inventor
Yukiyoshi Ito
Shingo Sato
Hideo Tezuka
Yuji Kawachi
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 JP13527577A priority Critical patent/JPS5468713A/en
Publication of JPS5468713A publication Critical patent/JPS5468713A/en
Publication of JPS5625494B2 publication Critical patent/JPS5625494B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE: To reduce the amt. of slag to be formed and make the properties effectively usable, in desiliconization of hot iron with an oxygen soure, by adding alkali (earth) metal cpds. at the same time and then subjecting the Si free hot iron to dephosphorization and decarburization.
CONSTITUTION: In the first process, gaseous oxygen or a solid oxygen source such as mill scale or sintered ore is supplied to desiliconize hot iron. At this time, by adding one or more cpds. selected from alkali metal and alkaline earth metal oxides, carbonates and fluorides, boron oxide and titanium oxide, removability of slag formed is ensured and the slag is made usable as a SiO2 source contg. no harmful components such as P and S in place of silica. In the second process, the Si free hot iron as main raw material is subjected to dephosphorization and decarburization in an oxygen steel making furnace.
COPYRIGHT: (C)1979,JPO&Japio
JP13527577A 1977-11-11 1977-11-11 Steel making process reducing discharge of slag and enhancing characteristics of the same Granted JPS5468713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13527577A JPS5468713A (en) 1977-11-11 1977-11-11 Steel making process reducing discharge of slag and enhancing characteristics of the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13527577A JPS5468713A (en) 1977-11-11 1977-11-11 Steel making process reducing discharge of slag and enhancing characteristics of the same

Publications (2)

Publication Number Publication Date
JPS5468713A true JPS5468713A (en) 1979-06-02
JPS5625494B2 JPS5625494B2 (en) 1981-06-12

Family

ID=15147887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13527577A Granted JPS5468713A (en) 1977-11-11 1977-11-11 Steel making process reducing discharge of slag and enhancing characteristics of the same

Country Status (1)

Country Link
JP (1) JPS5468713A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169506A (en) * 1984-02-13 1985-09-03 Kawasaki Steel Corp Converter steel making method using metallic oxide
WO2019004357A1 (en) * 2017-06-28 2019-01-03 新日鐵住金株式会社 Steelmaking slag for use as fertilizer starting material, method for producing steelmaking slag for use as fertilizer starting material, method for producing fertilizer, and fertilization method
WO2019004339A1 (en) * 2017-06-28 2019-01-03 新日鐵住金株式会社 Steelmaking slag for use as fertilizer starting material, method for producing steelmaking slag for use as fertilizer starting material, method for producing fertilizer, and fertilization method
JP2019014958A (en) * 2017-07-06 2019-01-31 Ｊｆｅスチール株式会社 Converter operation method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169506A (en) * 1984-02-13 1985-09-03 Kawasaki Steel Corp Converter steel making method using metallic oxide
WO2019004357A1 (en) * 2017-06-28 2019-01-03 新日鐵住金株式会社 Steelmaking slag for use as fertilizer starting material, method for producing steelmaking slag for use as fertilizer starting material, method for producing fertilizer, and fertilization method
WO2019004339A1 (en) * 2017-06-28 2019-01-03 新日鐵住金株式会社 Steelmaking slag for use as fertilizer starting material, method for producing steelmaking slag for use as fertilizer starting material, method for producing fertilizer, and fertilization method
JP2019014958A (en) * 2017-07-06 2019-01-31 Ｊｆｅスチール株式会社 Converter operation method

Also Published As

Publication number Publication date
JPS5625494B2 (en) 1981-06-12

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