JPS6455360A - Smelting reduction process for chromitite - Google Patents

Smelting reduction process for chromitite

Info

Publication number
JPS6455360A
JPS6455360A JP21368787A JP21368787A JPS6455360A JP S6455360 A JPS6455360 A JP S6455360A JP 21368787 A JP21368787 A JP 21368787A JP 21368787 A JP21368787 A JP 21368787A JP S6455360 A JPS6455360 A JP S6455360A
Authority
JP
Japan
Prior art keywords
chromitite
blown
reduction
smelting reduction
blowing
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
JP21368787A
Other languages
Japanese (ja)
Inventor
Minoru Ishikawa
Masaharu Anezaki
Hiroaki Ishida
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP21368787A priority Critical patent/JPS6455360A/en
Publication of JPS6455360A publication Critical patent/JPS6455360A/en
Pending legal-status Critical Current

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To carry out simultaneously decarburization before the completion of reduction and to improve efficiency, by blowing proper amounts of oxygen gas from the furnace bottom at the time of subjecting chromitite to smelting reduction by using a top and bottom blown converter-type reaction vessel. CONSTITUTION:Molten pig iron is charged into a top and bottom blown converter-type reaction vessel 1, and chromitite, etc., are charged from the opening 2 of a furnace body. Subsequently, oxygen is blown through a top- blowing lance 3, by which a molten metal 5 is agitated and chromitite is subjected to smelting reduction. When the process comes to the finish reduction period, oxygen gas is blown by <=0.8Nm<3>/min.t from bottom-blowing tuyeres 4 to carry out decarburization. By this method, carbon-unsaturated chromium- containing molten iron metal can be obtained.
JP21368787A 1987-08-26 1987-08-26 Smelting reduction process for chromitite Pending JPS6455360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21368787A JPS6455360A (en) 1987-08-26 1987-08-26 Smelting reduction process for chromitite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21368787A JPS6455360A (en) 1987-08-26 1987-08-26 Smelting reduction process for chromitite

Publications (1)

Publication Number Publication Date
JPS6455360A true JPS6455360A (en) 1989-03-02

Family

ID=16643319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21368787A Pending JPS6455360A (en) 1987-08-26 1987-08-26 Smelting reduction process for chromitite

Country Status (1)

Country Link
JP (1) JPS6455360A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014005A1 (en) * 1990-03-13 1991-09-19 Cra Services Limited A process for producing metals and metal alloys in a smelt reduction vessel
EP0779373A1 (en) * 1995-12-14 1997-06-18 Armco Inc. Method for direct use of chromite ore in the production of stainless steel
CN108893668A (en) * 2018-08-01 2018-11-27 中冶东方工程技术有限公司 The production method of ferritic stainless steel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014005A1 (en) * 1990-03-13 1991-09-19 Cra Services Limited A process for producing metals and metal alloys in a smelt reduction vessel
EP0779373A1 (en) * 1995-12-14 1997-06-18 Armco Inc. Method for direct use of chromite ore in the production of stainless steel
CN108893668A (en) * 2018-08-01 2018-11-27 中冶东方工程技术有限公司 The production method of ferritic stainless steel

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