KR100946128B1 - 용강의 전로 정련 방법 - Google Patents
용강의 전로 정련 방법 Download PDFInfo
- Publication number
- KR100946128B1 KR100946128B1 KR1020020046062A KR20020046062A KR100946128B1 KR 100946128 B1 KR100946128 B1 KR 100946128B1 KR 1020020046062 A KR1020020046062 A KR 1020020046062A KR 20020046062 A KR20020046062 A KR 20020046062A KR 100946128 B1 KR100946128 B1 KR 100946128B1
- Authority
- KR
- South Korea
- Prior art keywords
- slag
- converter
- catch carbon
- coating
- molten steel
- Prior art date
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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
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- 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
-
- 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
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
실시예 No. | 전챠지 슬래그중 T.Fe(중량%) | 잔류용강량(kg)/슬래그 톤 | 송산량Nm3/hr/슬래그 톤 | 슬래그중 T.Fe(중량%) | 슬래그중 T.Fe변화량(%) |
종래예 | 15 | 0 | 0 | 15 | 0 |
비교예 1 | 15 | 80 | 20 | 18 | 3%상승 |
발명예 1 | 15 | 100 | 40 | 21 | 6%상승 |
발명예 2 | 15 | 125 | 60 | 23 | 8%상승 |
발명예 3 | 15 | 150 | 80 | 25 | 10%상승 |
비교예 2 | 15 | 170 | 100 | 28 | 14%상승 |
취련초기 소결광 투입량 | 동일 인(P)제어능 확보시 발명예(2)는 종래예에 대비하여 10kg/ton-steel 정도 저감 |
취련초기 승열재(Fe-Si) 사용량 | 발명예(2)는 소결광 투입량 저감에 따라 종래예에 비하여 승열재 사용량은 2.4 kg/ton-steel 정도 저감 |
Claims (1)
- 전(前) 챠지의 슬래그 코팅, 주원료 장입, 캐취카본법에 의한 취련 및 출강으로 이루어지는 전로정련방법에 있어서,출강시 용강을 슬래그 톤당 100-150kg 잔류시켜 출강작업을 종료하는 단계; 및전로를 정립시키고 슬래그 톤당 40-80Nm3/hr의 산소를 슬래그중에 취입하여 슬래그중의 T. Fe가 19-25%가 되도록 한 후에 슬래그 코팅을 하는 단계를 포함하여 구성되는 것을 특징으로 하는 전로정련방법
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020046062A KR100946128B1 (ko) | 2002-08-05 | 2002-08-05 | 용강의 전로 정련 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020046062A KR100946128B1 (ko) | 2002-08-05 | 2002-08-05 | 용강의 전로 정련 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040013225A KR20040013225A (ko) | 2004-02-14 |
KR100946128B1 true KR100946128B1 (ko) | 2010-03-10 |
Family
ID=37320576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020046062A KR100946128B1 (ko) | 2002-08-05 | 2002-08-05 | 용강의 전로 정련 방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100946128B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100616137B1 (ko) * | 2005-04-07 | 2006-08-25 | 주식회사 포스코 | 전로 중량 측정 장치 및 이를 이용한 전로 정련 방법 |
KR100900998B1 (ko) * | 2007-12-28 | 2009-06-04 | 주식회사 포스코 | 전로에서의 극저탄소강 정련방법 |
CN103131817B (zh) * | 2011-11-30 | 2014-07-09 | 上海梅山钢铁股份有限公司 | 一种转炉炼钢保磷冶炼方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04202615A (ja) * | 1990-11-30 | 1992-07-23 | Nippon Steel Corp | 製鋼精錬用のマンガン鉱石ペレット |
KR19990012917A (ko) * | 1997-07-31 | 1999-02-25 | 김종진 | 엘디에스 전로 슬래그를 이용한 전로 보강재 |
JPH1161221A (ja) * | 1997-08-22 | 1999-03-05 | Kawasaki Steel Corp | 低Mn鋼の溶製方法 |
KR20010009701A (ko) * | 1999-07-13 | 2001-02-05 | 이구택 | 탈황효율이 우수한 전로정련 방법 |
-
2002
- 2002-08-05 KR KR1020020046062A patent/KR100946128B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04202615A (ja) * | 1990-11-30 | 1992-07-23 | Nippon Steel Corp | 製鋼精錬用のマンガン鉱石ペレット |
KR19990012917A (ko) * | 1997-07-31 | 1999-02-25 | 김종진 | 엘디에스 전로 슬래그를 이용한 전로 보강재 |
JPH1161221A (ja) * | 1997-08-22 | 1999-03-05 | Kawasaki Steel Corp | 低Mn鋼の溶製方法 |
KR20010009701A (ko) * | 1999-07-13 | 2001-02-05 | 이구택 | 탈황효율이 우수한 전로정련 방법 |
Also Published As
Publication number | Publication date |
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KR20040013225A (ko) | 2004-02-14 |
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