JPS5675507A - Regenerating method of converter slag - Google Patents

Regenerating method of converter slag

Info

Publication number
JPS5675507A
JPS5675507A JP15169079A JP15169079A JPS5675507A JP S5675507 A JPS5675507 A JP S5675507A JP 15169079 A JP15169079 A JP 15169079A JP 15169079 A JP15169079 A JP 15169079A JP S5675507 A JPS5675507 A JP S5675507A
Authority
JP
Japan
Prior art keywords
slag
converter
converter slag
raw material
mixing
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
JP15169079A
Other languages
Japanese (ja)
Inventor
Koji Ebihara
Koji Osumi
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 JP15169079A priority Critical patent/JPS5675507A/en
Publication of JPS5675507A publication Critical patent/JPS5675507A/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
    • C21C5/36—Processes yielding slags of special composition

Abstract

PURPOSE:To enable ground converter slag to be reused as a raw material for iron making by mixing a specific amount of coke powder into said slag, and subjecting the same to high-temp. reduction at specific temperatures in a solid state thereby dephosphorizing the same. CONSTITUTION:The raw material slag (a) prepared by adding and mixing 5-30% coke powder of about <=1mm. to the converter slag ground to about <=1mm. is charged into a reducing furnace 1 through its charge port 2 via a hopper 7 and a screw conveyor 8, and air is forcibly blasted therein through a blast port 5 to blow up said raw material slag (a) through a grate 4 and form fluid layers, whereby the slag is reduced at high temperatures of 1,000-1,400 deg.C. The P2O5 in the converter slag is reduced and evaporated by the following formula. P2O5+5C 2P+5CO. The dephosphorized converter slag is carried as treated slag (b) into a vessel 10. In this way, about 70% of S is removed simultaneously with dephosphorization, and the converter slag which has hithero been disposed as the material to be discarded for reclamation is regenerated as good auxiliary raw materials for sintered ore and converter steel.
JP15169079A 1979-11-21 1979-11-21 Regenerating method of converter slag Pending JPS5675507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15169079A JPS5675507A (en) 1979-11-21 1979-11-21 Regenerating method of converter slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15169079A JPS5675507A (en) 1979-11-21 1979-11-21 Regenerating method of converter slag

Publications (1)

Publication Number Publication Date
JPS5675507A true JPS5675507A (en) 1981-06-22

Family

ID=15524125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15169079A Pending JPS5675507A (en) 1979-11-21 1979-11-21 Regenerating method of converter slag

Country Status (1)

Country Link
JP (1) JPS5675507A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61197451A (en) * 1985-02-23 1986-09-01 新日本製鐵株式会社 Rifineded slag reformation
KR100398413B1 (en) * 1998-12-23 2003-12-18 주식회사 포스코 A method for preventing an ld slag from generating white water
WO2009016443A1 (en) * 2007-07-04 2009-02-05 Schumacher, Edgar Method for treating slag flowing from a metallurgical vessel and a device for carrying out said method
JP2012007190A (en) * 2010-06-22 2012-01-12 Jfe Steel Corp Method for resource recovery from steelmaking slag, and raw material for phosphate fertilizer
WO2019131128A1 (en) * 2017-12-26 2019-07-04 Ｊｆｅスチール株式会社 Method for removing phosphorus from phosphorus-containing substance
WO2020261767A1 (en) * 2019-06-25 2020-12-30 Ｊｆｅスチール株式会社 Method for removing phosphorus from phosphorus-containing substance, method for producing starting material for metal smelting or starting material for metal refining, and method for producing metal
JP2021004382A (en) * 2019-06-25 2021-01-14 Ｊｆｅスチール株式会社 Dephosphorization method of manganese oxide-containing substance, low phosphorus-containing manganese oxide-containing substance, and method for manufacturing steel using manganese oxide-containing substance
JP2021004383A (en) * 2019-06-25 2021-01-14 Ｊｆｅスチール株式会社 Phosphorus removing method from phosphorus-containing substance, and steel manufacturing method
KR20210011431A (en) 2018-05-22 2021-02-01 미츠비시 파워 가부시키가이샤 Burner and combustion device
CN114026041A (en) * 2019-06-25 2022-02-08 杰富意钢铁株式会社 Method for removing phosphorus from phosphorus-containing substance, method for producing raw material for metal smelting or metal refining, and method for producing metal

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61197451A (en) * 1985-02-23 1986-09-01 新日本製鐵株式会社 Rifineded slag reformation
KR100398413B1 (en) * 1998-12-23 2003-12-18 주식회사 포스코 A method for preventing an ld slag from generating white water
WO2009016443A1 (en) * 2007-07-04 2009-02-05 Schumacher, Edgar Method for treating slag flowing from a metallurgical vessel and a device for carrying out said method
EA017161B1 (en) * 2007-07-04 2012-10-30 Техком Гмбх Method for treating slag flowing from a metallurgical vessel and a device for carrying out said method
JP2012007190A (en) * 2010-06-22 2012-01-12 Jfe Steel Corp Method for resource recovery from steelmaking slag, and raw material for phosphate fertilizer
CN111356776A (en) * 2017-12-26 2020-06-30 杰富意钢铁株式会社 Method for removing phosphorus from phosphorus-containing substances
TWI683907B (en) * 2017-12-26 2020-02-01 日商Ｊｆｅ鋼鐵股份有限公司 Method for removing phosphorus from phosphorus-containing substance
KR20200057752A (en) * 2017-12-26 2020-05-26 제이에프이 스틸 가부시키가이샤 Method for removing phosphorus from phosphorus-containing substances
WO2019131128A1 (en) * 2017-12-26 2019-07-04 Ｊｆｅスチール株式会社 Method for removing phosphorus from phosphorus-containing substance
AU2018394522B2 (en) * 2017-12-26 2021-04-01 Jfe Steel Corporation Method for removing phosphorus from phosphorus-containing substance
CN111356776B (en) * 2017-12-26 2021-12-10 杰富意钢铁株式会社 Method for removing phosphorus from phosphorus-containing substances
US11649514B2 (en) 2017-12-26 2023-05-16 Jfe Steel Corporation Method for removing phosphorus from phosphorus-containing substance
KR20210011431A (en) 2018-05-22 2021-02-01 미츠비시 파워 가부시키가이샤 Burner and combustion device
WO2020261767A1 (en) * 2019-06-25 2020-12-30 Ｊｆｅスチール株式会社 Method for removing phosphorus from phosphorus-containing substance, method for producing starting material for metal smelting or starting material for metal refining, and method for producing metal
JP2021004382A (en) * 2019-06-25 2021-01-14 Ｊｆｅスチール株式会社 Dephosphorization method of manganese oxide-containing substance, low phosphorus-containing manganese oxide-containing substance, and method for manufacturing steel using manganese oxide-containing substance
JP2021004383A (en) * 2019-06-25 2021-01-14 Ｊｆｅスチール株式会社 Phosphorus removing method from phosphorus-containing substance, and steel manufacturing method
CN114026041A (en) * 2019-06-25 2022-02-08 杰富意钢铁株式会社 Method for removing phosphorus from phosphorus-containing substance, method for producing raw material for metal smelting or metal refining, and method for producing metal

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