KR970043110A - Method of reforming steelmaking slag - Google Patents

Method of reforming steelmaking slag Download PDF

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Publication number
KR970043110A
KR970043110A KR1019950068443A KR19950068443A KR970043110A KR 970043110 A KR970043110 A KR 970043110A KR 1019950068443 A KR1019950068443 A KR 1019950068443A KR 19950068443 A KR19950068443 A KR 19950068443A KR 970043110 A KR970043110 A KR 970043110A
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KR
South Korea
Prior art keywords
slag
steelmaking
reforming
steelmaking slag
fluorspar
Prior art date
Application number
KR1019950068443A
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Korean (ko)
Other versions
KR100226942B1 (en
Inventor
허기행
유주연
김진일
유병돈
Original Assignee
김종진
포항종합제철 주식회사
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.)
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Publication date
Application filed by 김종진, 포항종합제철 주식회사 filed Critical 김종진
Priority to KR1019950068443A priority Critical patent/KR100226942B1/en
Publication of KR970043110A publication Critical patent/KR970043110A/en
Application granted granted Critical
Publication of KR100226942B1 publication Critical patent/KR100226942B1/en

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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
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/076—Use of slags or fluxes as treating agents
    • 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
    • C21C2200/00—Recycling of waste material

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

본 발명은 제강공정에서 부산물로 발생되는 슬래그의 개질처리 방법에 관한 것이며, 그목적은 다양한 용도로 이용할 수 있는 슬래그를 제공함에 있다. 본 발명은 제강공정에서 부산물로 발생되는 슬래그의 처리 방법에 있어서, 상기 제강 슬래그를 1차로 환원처리 하거나 또는 환원처리된 개질 슬래그 생석회 및 형석을 단독 또는 복합 첨가하여 2차 개질처리하여 탈황능이 우수한 정련용 플럭스를 제조할 수 있는 슬래그 개질 처리방법에 관한 것을 그 기술적 요지로 한다.The present invention relates to a method for reforming slag generated as a by-product in the steelmaking process, the object of which is to provide a slag that can be used for various purposes. In the present invention, in the method for treating slag generated as a by-product in the steelmaking process, the steelmaking slag is first reduced or the refining slag quicklime and fluorspar are added alone or in combination to further refine the desulfurization ability. The technical gist of the slag reforming treatment method for producing the flux for the use is made.

Description

제강슬래그의 개질처리방법Method of reforming steelmaking slag

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 적용되는 장치의 개략 구성도,1 is a schematic configuration diagram of an apparatus applied to the present invention,

제2도는 발명 및 비교방법에따라 제조된 플럭스의 탈황능을 설명하기 위한CaO-SiO2-Al2O3상태도2 is a CaO-SiO 2 -Al 2 O 3 state diagram for explaining the desulfurization ability of the flux prepared according to the invention and comparative method

Claims (5)

제강공정에서 부산물로 발생되는 슬래그의 처리 방법에 있어서, 상기 제강 슬래그가 용융된 상태에서 환원제를 투입하여 환원개질함을 특징으로하는 제강슬래그의 개질 처리방법In the method for treating slag generated as a by-product in the steelmaking process, the reforming treatment method of steelmaking slag characterized in that the reduction reforming by adding a reducing agent in the molten state of the steelmaking slag. 제1항에 있어서, 상기 투입되는 환원제는 금속 알루미늄, 알루미늄 드로스 및 석탄중에서 선택된 1종 또는 2종 이상임을 특징으로 하는 제강슬래그의 개질 처리방법The method of claim 1, wherein the reducing agent to be added is one or two or more selected from metal aluminum, aluminum dross and coal. 제강공정에서 부산물로 발생되는 슬래그의 처리방법에 있어서, 상기 제강슬래그가 용융된 상태에서 환원제를 투입하여 환원개질한 다음, 이 환원 개질된 슬래그에 생석회 및 형석을 단독 또는 복합 첨가하여 2차 개질함을 특징으로 하는 제강 슬래그의 개질 처리방법In the method for treating slag generated as a by-product in the steelmaking process, reducing reforming by inputting a reducing agent in the molten state of the steelmaking slag, followed by secondary reforming by addition of quicklime and fluorspar to the reduced-modified slag. Modification treatment method of steelmaking slag characterized in that 제3항에 있어서, 상기 생석회 및 형석은 슬래그의 최종 조성이 중량%로, T.Fe :0.4-0.6%, CaO:40-55%, SiO2: 5-15% 및 Al2O2: 15-25%가 되도록 첨가함을 특징으로 하는 제강슬래그의 개질 처리방법.According to claim 3, wherein the quicklime and fluorspar has a final composition of slag by weight, T.Fe: 0.4-0.6%, CaO: 40-55%, SiO 2 : 5-15% and Al 2 O 2 : 15 Process for modifying steelmaking slag, characterized in that the addition to -25%. 제3항에 있어서, 상기 생석회 및 형석은 슬래그의 최종 조성시 중량%로, T.Fe :0.2-0.5%, CaO:55-70%,SiO2:10-15% 및 Al2O2: 2-6%가 되도록 첨가함을 특징으로 하는 제강슬래그의 개질 처리방법The method according to claim 3, wherein the quicklime and fluorspar is in the final composition of the slag by weight, T.Fe: 0.2-0.5%, CaO: 55-70%, SiO 2 : 10-15% and Al 2 O 2 : 2 Modification method of steelmaking slag, characterized in that the addition to -6%
KR1019950068443A 1995-12-30 1995-12-30 Modifying treatment method of steel making slag KR100226942B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950068443A KR100226942B1 (en) 1995-12-30 1995-12-30 Modifying treatment method of steel making slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950068443A KR100226942B1 (en) 1995-12-30 1995-12-30 Modifying treatment method of steel making slag

Publications (2)

Publication Number Publication Date
KR970043110A true KR970043110A (en) 1997-07-26
KR100226942B1 KR100226942B1 (en) 1999-10-15

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Application Number Title Priority Date Filing Date
KR1019950068443A KR100226942B1 (en) 1995-12-30 1995-12-30 Modifying treatment method of steel making slag

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010060907A (en) * 1999-12-28 2001-07-07 이구택 BOP Slag dephosphorization
KR100593685B1 (en) * 1999-12-28 2006-07-03 주식회사 포스코 Seleclive Reduclion Method of BOF Slages

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101118575B1 (en) 2010-03-17 2012-02-27 한양대학교 산학협력단 Slag composition for smelting reduction of spent petroleum catalysts
KR101159619B1 (en) 2010-03-31 2012-06-27 현대제철 주식회사 Method for producing silicon added steel and silicon added steed produced by the same
KR101435282B1 (en) * 2012-01-31 2014-09-01 현대제철 주식회사 Method for reduction of slag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010060907A (en) * 1999-12-28 2001-07-07 이구택 BOP Slag dephosphorization
KR100593685B1 (en) * 1999-12-28 2006-07-03 주식회사 포스코 Seleclive Reduclion Method of BOF Slages

Also Published As

Publication number Publication date
KR100226942B1 (en) 1999-10-15

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