JPS575809A - Operating method of converter using limestone - Google Patents

Operating method of converter using limestone

Info

Publication number
JPS575809A
JPS575809A JP7984080A JP7984080A JPS575809A JP S575809 A JPS575809 A JP S575809A JP 7984080 A JP7984080 A JP 7984080A JP 7984080 A JP7984080 A JP 7984080A JP S575809 A JPS575809 A JP S575809A
Authority
JP
Japan
Prior art keywords
limestone
converter
loaded
coke powder
powder
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
JP7984080A
Other languages
Japanese (ja)
Inventor
Takeo Iwata
Shingo Sato
Takashi Inoue
Noriyuki Masumitsu
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 JP7984080A priority Critical patent/JPS575809A/en
Publication of JPS575809A publication Critical patent/JPS575809A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate reduction in the loading amount of iron ore, upgrade the yield of molten steel and recover effectively CO evolving during the refining of the iron ore, by using coke powder as a heat source for heat balancing when using limestone as the slag forming agent in converter refining.
CONSTITUTION: Limestone along with molten pig iron and other secondary raw material is partially loaded from the top of the converter as preloading, and at the same time, limestone powder along with the coke powder is loaded from at least one blow nozzle 1 at the bottom of the converter 2. Or the total amount of the limestone may be loaded from the top of the converter or the total amount of the limestone powder from the nozzle 1 and further, the coke powder may be loaded from a nozzle other than the nozzles for the limestone. CO2 formed in the decomposition reaction of limestone reacts with a part of the coke powder loaded and is recovered as CO gas.
COPYRIGHT: (C)1982,JPO&Japio
JP7984080A 1980-06-13 1980-06-13 Operating method of converter using limestone Pending JPS575809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7984080A JPS575809A (en) 1980-06-13 1980-06-13 Operating method of converter using limestone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7984080A JPS575809A (en) 1980-06-13 1980-06-13 Operating method of converter using limestone

Publications (1)

Publication Number Publication Date
JPS575809A true JPS575809A (en) 1982-01-12

Family

ID=13701395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7984080A Pending JPS575809A (en) 1980-06-13 1980-06-13 Operating method of converter using limestone

Country Status (1)

Country Link
JP (1) JPS575809A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224107A (en) * 1982-06-22 1983-12-26 Nippon Steel Corp Refining method of molten iron
JPS60245710A (en) * 1984-05-22 1985-12-05 Kawasaki Steel Corp Method for supplying carbonaceous material to converter
CN102719601A (en) * 2012-05-08 2012-10-10 莱芜钢铁集团有限公司 Method for making slag by replacing partial limestone with lime used for top and bottom combined blown converter
CN102766723A (en) * 2012-06-29 2012-11-07 石家庄钢铁有限责任公司 Limestone slagging steelmaking lance position control method for basic oxygen furnaces
CN102766724A (en) * 2012-07-12 2012-11-07 东北大学 Method adopting oxygen lance to jet granulated powder limestone to make slag and steel in combined blown converter
CN107099639A (en) * 2017-04-06 2017-08-29 首钢总公司 A kind of smelting process of top and bottom combined blown converter
CN107177712A (en) * 2017-04-10 2017-09-19 首钢总公司 A kind of converter smelting method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224107A (en) * 1982-06-22 1983-12-26 Nippon Steel Corp Refining method of molten iron
JPS6231045B2 (en) * 1982-06-22 1987-07-06 Nippon Steel Corp
JPS60245710A (en) * 1984-05-22 1985-12-05 Kawasaki Steel Corp Method for supplying carbonaceous material to converter
CN102719601A (en) * 2012-05-08 2012-10-10 莱芜钢铁集团有限公司 Method for making slag by replacing partial limestone with lime used for top and bottom combined blown converter
CN102766723A (en) * 2012-06-29 2012-11-07 石家庄钢铁有限责任公司 Limestone slagging steelmaking lance position control method for basic oxygen furnaces
CN102766724A (en) * 2012-07-12 2012-11-07 东北大学 Method adopting oxygen lance to jet granulated powder limestone to make slag and steel in combined blown converter
CN107099639A (en) * 2017-04-06 2017-08-29 首钢总公司 A kind of smelting process of top and bottom combined blown converter
CN107099639B (en) * 2017-04-06 2019-09-03 首钢集团有限公司 A kind of smelting process of top and bottom combined blown converter
CN107177712A (en) * 2017-04-10 2017-09-19 首钢总公司 A kind of converter smelting method
CN107177712B (en) * 2017-04-10 2019-04-23 首钢集团有限公司 A kind of converter smelting method

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