JPS57177911A - Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components - Google Patents

Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components

Info

Publication number
JPS57177911A
JPS57177911A JP6255981A JP6255981A JPS57177911A JP S57177911 A JPS57177911 A JP S57177911A JP 6255981 A JP6255981 A JP 6255981A JP 6255981 A JP6255981 A JP 6255981A JP S57177911 A JPS57177911 A JP S57177911A
Authority
JP
Japan
Prior art keywords
slag
dephosphorization
furnace
subjected
waste slag
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
JP6255981A
Other languages
Japanese (ja)
Inventor
Tsutomu Nozaki
Osamu Haida
Toshihiko Emi
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 JP6255981A priority Critical patent/JPS57177911A/en
Publication of JPS57177911A publication Critical patent/JPS57177911A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)

Abstract

PURPOSE:To regenerate converter waste slag and to recover valuable cmponents effectively by regenerating slag by repetition of dephosphorization (de-P)(V) of the converter waste slag in an electric arc furnace and shifting and slagging off the enriched P (V) in the bath to soda ash type slag. CONSTITUTION:The molten steel from a blast furnace 1 is shifted into an electric arc furnace 2 for slag dephosphorization, and the converter slags 5, and molten ingot dephosphorization slag 6 formed in bottom blown converters 3, 4 are introduced as converter waste slag into the furnace 2. The slag is subjected to agitating and heating in the furnace 2 and the P2O5, V2O5 in the waste slag are reduced by the C, Si in the bath, and the resultant reduced slag 7 is reutilized for part of the glag forming agent for the furnace 3 for Q-BOP ordinary blowing, or furnace 4 for Q-BOP molten ingot dephosphorization. On the other hand, the molten iron enriched of P and V by the reduction is subjected to a de-P treatment 8 by blowing Na2CO3 into the bath, whereby the soda ash type slag 9 contg. P, V is removed. The remaining molten iron is reiteratively utilized, and the slag 9 is recovered as Fe-V, Fe-P.
JP6255981A 1981-04-27 1981-04-27 Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components Pending JPS57177911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6255981A JPS57177911A (en) 1981-04-27 1981-04-27 Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6255981A JPS57177911A (en) 1981-04-27 1981-04-27 Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components

Publications (1)

Publication Number Publication Date
JPS57177911A true JPS57177911A (en) 1982-11-01

Family

ID=13203746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6255981A Pending JPS57177911A (en) 1981-04-27 1981-04-27 Treatment of molten bath to be subjected to dephosphorization regeneration of converter waste slag and recovery of valuable components

Country Status (1)

Country Link
JP (1) JPS57177911A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010074309A1 (en) * 2008-12-26 2010-07-01 Ｊｆｅスチール株式会社 Method for reclaiming iron and phosphorus from steelmaking slag
WO2014003119A1 (en) * 2012-06-27 2014-01-03 新日鐵住金株式会社 Slag supply container for electric furnace for steel slag reduction
CN104263880A (en) * 2014-10-11 2015-01-07 中冶南方工程技术有限公司 Stainless steel smelting method applicable to high-phosphorus raw material
CN107142356A (en) * 2017-04-28 2017-09-08 山西太钢不锈钢股份有限公司 A kind of smelting process of inexpensive ferritic stainless steel
CN107201425A (en) * 2016-12-27 2017-09-26 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of smelting process for the middle chrome ferritic stainless steel for improving polishing performance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233897A (en) * 1975-09-10 1977-03-15 Nippon Steel Corp Method for treatment of iron slag
JPS52156713A (en) * 1976-06-23 1977-12-27 Nippon Steel Corp Treatment of steel making slag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233897A (en) * 1975-09-10 1977-03-15 Nippon Steel Corp Method for treatment of iron slag
JPS52156713A (en) * 1976-06-23 1977-12-27 Nippon Steel Corp Treatment of steel making slag

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010074309A1 (en) * 2008-12-26 2010-07-01 Ｊｆｅスチール株式会社 Method for reclaiming iron and phosphorus from steelmaking slag
JP5574057B2 (en) * 2012-06-27 2014-08-20 新日鐵住金株式会社 Slag supply container for electric furnace for steelmaking slag reduction treatment
US9217185B2 (en) 2012-06-27 2015-12-22 Nippon Steel & Sumitomo Metal Corporation Method of reduction processing of steel-making slag
WO2014003127A1 (en) * 2012-06-27 2014-01-03 新日鐵住金株式会社 Steel slag reduction equipment and steel slag reduction system
JP5522320B1 (en) * 2012-06-27 2014-06-18 新日鐵住金株式会社 Steelmaking slag reduction treatment method
JP5541423B1 (en) * 2012-06-27 2014-07-09 新日鐵住金株式会社 Steelmaking slag reduction treatment device and steelmaking slag reduction treatment system
WO2014003119A1 (en) * 2012-06-27 2014-01-03 新日鐵住金株式会社 Slag supply container for electric furnace for steel slag reduction
US9534266B2 (en) 2012-06-27 2017-01-03 Nippon Steel & Sumitomo Metal Corporation Slag-supplying container for use in electric furnace for reduction processing of steel-making slag
WO2014003123A1 (en) * 2012-06-27 2014-01-03 新日鐵住金株式会社 Steel slag reduction method
US9238846B2 (en) 2012-06-27 2016-01-19 Nippon Steel & Sumitomo Metal Corporation Reduction processing apparatus for steel-making slag and reduction processing system for steel-making slag
CN104263880B (en) * 2014-10-11 2016-06-01 中冶南方工程技术有限公司 A kind of stainless steel smelting method adapting to high phosphorus raw material
CN104263880A (en) * 2014-10-11 2015-01-07 中冶南方工程技术有限公司 Stainless steel smelting method applicable to high-phosphorus raw material
CN107201425A (en) * 2016-12-27 2017-09-26 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of smelting process for the middle chrome ferritic stainless steel for improving polishing performance
CN107201425B (en) * 2016-12-27 2019-08-06 甘肃酒钢集团宏兴钢铁股份有限公司 A kind of smelting process for the middle chrome ferritic stainless steel that polishing performance can be improved
CN107142356A (en) * 2017-04-28 2017-09-08 山西太钢不锈钢股份有限公司 A kind of smelting process of inexpensive ferritic stainless steel

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