JPS55158208A - Refining method of steel - Google Patents

Refining method of steel

Info

Publication number
JPS55158208A
JPS55158208A JP6422179A JP6422179A JPS55158208A JP S55158208 A JPS55158208 A JP S55158208A JP 6422179 A JP6422179 A JP 6422179A JP 6422179 A JP6422179 A JP 6422179A JP S55158208 A JPS55158208 A JP S55158208A
Authority
JP
Japan
Prior art keywords
blowing
molten metal
gas
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
JP6422179A
Other languages
Japanese (ja)
Inventor
Yujo Marukawa
Isao Yamazaki
Masaharu Anezaki
Tsutomu Kajimoto
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 JP6422179A priority Critical patent/JPS55158208A/en
Priority to US06/148,530 priority patent/US4280838A/en
Priority to AU58590/80A priority patent/AU525023B2/en
Priority to AU2829080A priority patent/AU2829080A/en
Priority to ZA00803028A priority patent/ZA803028B/en
Priority to CA000352347A priority patent/CA1153560A/en
Priority to GB8016879A priority patent/GB2054655B/en
Priority to IT67813/80A priority patent/IT1130459B/en
Priority to BE0/200762A priority patent/BE883475A/en
Priority to LU82481A priority patent/LU82481A1/en
Priority to ES491828A priority patent/ES491828A0/en
Priority to DE3019899A priority patent/DE3019899C2/en
Priority to AT0277580A priority patent/AT377007B/en
Priority to FR8011588A priority patent/FR2457325A1/en
Priority to NLAANVRAGE8003012,A priority patent/NL183413C/en
Priority to BR8003268A priority patent/BR8003268A/en
Priority to IN714/CAL/80A priority patent/IN152953B/en
Publication of JPS55158208A publication Critical patent/JPS55158208A/en
Priority to ES498585A priority patent/ES498585A0/en
Pending 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/35—Blowing from above and through the bath
    • 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above

Abstract

PURPOSE: To improve the stirring and contact of molten metal and molten slag, prevent the excessive oxidation of Fe and accelerate dephosphorization reaction by blowing the gas composed primarily of CO2 and CO from the nozzle under the molten metal surface during blowing of steel in an oxygen top blowing converter or upon ending of the blowing.
CONSTITUTION: At the time of refining steel in the oxygen top blowing converter, the gas composed primarily of CO2 and CO is blown through the nozzle provided on the bottom or side wall of the converter for the fixed period at the final end of the oxygen blowing or upon ending of the oxygen blowing to stir the molten metal. The gas used here is the gas rich in CO2 and CO by treating the exhaust gas from metal refining furnaces and the combustion exhaust gas from various heating furnaces. The CO gas of twice the CO2 is evolved by the reaction of the C and CO2 of molten metal to improve the contact between the molten metal and molten slas and accelerate the dephosphorization reaction of molten metal as well as to suppress the oxidation of Fe, Mn, etc. and improve the yield of molten steel as well.
COPYRIGHT: (C)1980,JPO&Japio
JP6422179A 1979-05-24 1979-05-24 Refining method of steel Pending JPS55158208A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
JP6422179A JPS55158208A (en) 1979-05-24 1979-05-24 Refining method of steel
US06/148,530 US4280838A (en) 1979-05-24 1980-05-09 Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace
AU58590/80A AU525023B2 (en) 1979-05-24 1980-05-20 Carbon steel and low alloy steel with bottom blowing b.o.f.
AU2829080A AU2829080A (en) 1979-05-24 1980-05-20 Carbon steel and low alloy steel with bottom blowing b.o.f.
ZA00803028A ZA803028B (en) 1979-05-24 1980-05-21 Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace
CA000352347A CA1153560A (en) 1979-05-24 1980-05-21 Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace
GB8016879A GB2054655B (en) 1979-05-24 1980-05-22 Simultaneous top and bottom-blowing in oxygen steelmaking
LU82481A LU82481A1 (en) 1979-05-24 1980-05-23 PROCESS AND APPARATUS FOR MANUFACTURING CARBON STEEL AND LOW ALLOY STEEL USING A BASIC OXYGEN OVEN WITH BOTTOM BLOWING
BE0/200762A BE883475A (en) 1979-05-24 1980-05-23 PROCESSING OF CARBON STEEL AND LOW ALLOY STEEL BY OXYDURGY WITH LOWER BLOWING
IT67813/80A IT1130459B (en) 1979-05-24 1980-05-23 PROCEDURE FOR THE PRODUCTION OF CARBON STEEL AND LE GATO STEEL WITH A BASIC OXYGEN OVEN AND INSUFLATION FROM THE BOTTOM
ES491828A ES491828A0 (en) 1979-05-24 1980-05-23 METHOD FOR PRODUCING CARBON STEEL AND LOW-ALEA-CION STEEL IN A BASIC OVEN WITH OXYGEN BLOWING.
DE3019899A DE3019899C2 (en) 1979-05-24 1980-05-23 Process for the production of carbon steel and low-alloy steel in a basic oxygen furnace and apparatus for carrying out the process
AT0277580A AT377007B (en) 1979-05-24 1980-05-23 METHOD FOR PRODUCING CARBON STEEL AND LOW-ALLOY STEEL IN A BASIC OXYGEN CONVERTER, AND STEEL GENERATING DEVICE FOR CARRYING OUT THE METHOD
FR8011588A FR2457325A1 (en) 1979-05-24 1980-05-23 METHOD AND APPARATUS FOR THE PRODUCTION OF CARBON STEEL AND LOW ALLOY STEEL IN AN OXYGEN BLOWN FURNACE WITH BOTTOM BLOWING
NLAANVRAGE8003012,A NL183413C (en) 1979-05-24 1980-05-23 METHOD FOR PREPARING CARBON STEEL OR LOW ALLOY STEEL.
BR8003268A BR8003268A (en) 1979-05-24 1980-05-26 PROCESS FOR THE PRODUCTION OF CARBON STEEL AND LOW ALLOY STEEL IN A BASIC OXYGEN OVEN, AND APPLIANCE FOR THE SAME
IN714/CAL/80A IN152953B (en) 1979-05-24 1980-06-20
ES498585A ES498585A0 (en) 1979-05-24 1981-01-16 STEEL MANUFACTURING APPARATUS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6422179A JPS55158208A (en) 1979-05-24 1979-05-24 Refining method of steel

Publications (1)

Publication Number Publication Date
JPS55158208A true JPS55158208A (en) 1980-12-09

Family

ID=13251822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6422179A Pending JPS55158208A (en) 1979-05-24 1979-05-24 Refining method of steel

Country Status (4)

Country Link
JP (1) JPS55158208A (en)
BE (1) BE883475A (en)
IN (1) IN152953B (en)
ZA (1) ZA803028B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989705A (en) * 1982-11-11 1984-05-24 Nippon Steel Corp Refining method with top and bottom blown converter
JPS6176608A (en) * 1984-09-21 1986-04-19 Kawasaki Steel Corp Method for protecting tuyere of converter for steel making
JPS61284516A (en) * 1985-06-12 1986-12-15 Kawasaki Steel Corp Method for supplying stirring gas to converter
CN113025778A (en) * 2021-03-03 2021-06-25 攀钢集团攀枝花钢铁研究院有限公司 Method for reducing carbon powder consumption in electric furnace oxidation process
CN113106190A (en) * 2021-04-09 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Steelmaking method for obtaining high-manganese low-phosphorus molten steel through converter smelting
CN115305313A (en) * 2022-09-16 2022-11-08 宝武集团鄂城钢铁有限公司 Converter slag melting agent and preparation method and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757816A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Steel making method by composite top and bottom blown converter
CN111961797A (en) * 2020-09-16 2020-11-20 攀钢集团研究院有限公司 Method for increasing CO content in semisteel steelmaking converter gas

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989705A (en) * 1982-11-11 1984-05-24 Nippon Steel Corp Refining method with top and bottom blown converter
JPS6232244B2 (en) * 1982-11-11 1987-07-14 Nippon Steel Corp
JPS6176608A (en) * 1984-09-21 1986-04-19 Kawasaki Steel Corp Method for protecting tuyere of converter for steel making
JPS6224489B2 (en) * 1984-09-21 1987-05-28 Kawasaki Steel Co
JPS61284516A (en) * 1985-06-12 1986-12-15 Kawasaki Steel Corp Method for supplying stirring gas to converter
JPS6360090B2 (en) * 1985-06-12 1988-11-22
CN113025778A (en) * 2021-03-03 2021-06-25 攀钢集团攀枝花钢铁研究院有限公司 Method for reducing carbon powder consumption in electric furnace oxidation process
CN113106190A (en) * 2021-04-09 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Steelmaking method for obtaining high-manganese low-phosphorus molten steel through converter smelting
CN115305313A (en) * 2022-09-16 2022-11-08 宝武集团鄂城钢铁有限公司 Converter slag melting agent and preparation method and application thereof

Also Published As

Publication number Publication date
ZA803028B (en) 1981-06-24
BE883475A (en) 1980-09-15
IN152953B (en) 1984-05-05

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