JPS6473012A - Refining method by using top and bottom blowing refining furnace - Google Patents

Refining method by using top and bottom blowing refining furnace

Info

Publication number
JPS6473012A
JPS6473012A JP22639787A JP22639787A JPS6473012A JP S6473012 A JPS6473012 A JP S6473012A JP 22639787 A JP22639787 A JP 22639787A JP 22639787 A JP22639787 A JP 22639787A JP S6473012 A JPS6473012 A JP S6473012A
Authority
JP
Japan
Prior art keywords
blowing
bottom blowing
oxygen
carbonic material
molten steel
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
JP22639787A
Other languages
Japanese (ja)
Inventor
Yoshihide Kato
Yukio Takahashi
Kimiharu Yamaguchi
Toshikazu Sakuratani
Tetsuya Fujii
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP22639787A priority Critical patent/JPS6473012A/en
Publication of JPS6473012A publication Critical patent/JPS6473012A/en
Pending legal-status Critical Current

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  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

PURPOSE:To raise the temp. of molten steel by efficiently burning carbonic material, by blowing powdery carbonic material from a bottom blowing tuyere by using a top and bottom blowing refining furnace, blowing oxygen on the molten steel surface from the top blowing lance at the same time and allowing a direct reaction between the carbonic material and the oxygen. CONSTITUTION:The powdery carbonic material 10 is blown into the molten iron bath 7 together with carrier gas from the bottom blowing tuyere 3 in the top and bottom blowing refining furnace. Further, the oxygen is blown from the top blowing lance 4 arranged over the surface of molten iron path 7 just above the bottom blowing tuyere 3. Then, the discharge of the powdery carbonic material 10 on the surface of molten iron 7 and its firing by top blowing oxygen jet are made to take place at the same position, and exothermic reaction of O2+C=CO2 is made to occur, to raise the temp. of the molten steel.
JP22639787A 1987-09-11 1987-09-11 Refining method by using top and bottom blowing refining furnace Pending JPS6473012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22639787A JPS6473012A (en) 1987-09-11 1987-09-11 Refining method by using top and bottom blowing refining furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22639787A JPS6473012A (en) 1987-09-11 1987-09-11 Refining method by using top and bottom blowing refining furnace

Publications (1)

Publication Number Publication Date
JPS6473012A true JPS6473012A (en) 1989-03-17

Family

ID=16844483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22639787A Pending JPS6473012A (en) 1987-09-11 1987-09-11 Refining method by using top and bottom blowing refining furnace

Country Status (1)

Country Link
JP (1) JPS6473012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066108A (en) * 1989-12-22 1991-11-19 Hughes Aircraft Company High throughput contrast enhancement for polarized displays

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066108A (en) * 1989-12-22 1991-11-19 Hughes Aircraft Company High throughput contrast enhancement for polarized displays

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