KR20040055326A - CaO-CaCN2 혼합 조성물에 의한 용강의탈황촉진방법 - Google Patents
CaO-CaCN2 혼합 조성물에 의한 용강의탈황촉진방법 Download PDFInfo
- Publication number
- KR20040055326A KR20040055326A KR1020020081970A KR20020081970A KR20040055326A KR 20040055326 A KR20040055326 A KR 20040055326A KR 1020020081970 A KR1020020081970 A KR 1020020081970A KR 20020081970 A KR20020081970 A KR 20020081970A KR 20040055326 A KR20040055326 A KR 20040055326A
- Authority
- KR
- South Korea
- Prior art keywords
- molten steel
- cao
- cacn
- sulfur
- mixture
- 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
- 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
- C21C7/064—Dephosphorising; 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
- 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
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims (2)
- 0.05중량%의 탄소(C), 0.1중량%의 망간(Mn), 0.012중량%의 인(P) 및 0.012중량% 이하의 황(S), 기타 불순물 및 나머지는 철(Fe)을 함유한 강의 제조시 RH조에서 탈황을 촉진하는 방법에 있어서,상기 용강의 나탕 형성부에 CaO+CaCN2혼합물을 투입하는 단계,상기 용강내에 함유된 황을 상기 CaO+CaCN2혼합물을 이용하여 CaS로 고정하는 단계 및상기 CaS를 슬래그로 이동시켜 제거하는 단계를 포함하는 것을 특징으로 하는 탈황촉진방법.
- 제1항에서,상기 용강의 나탕 형성부에 상기 CaO+CaCN2혼합물을 투입하는 단계에서 CaO는 80중량% 이하인 것을 특징으로 하는 탈황촉진방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020081970A KR100929179B1 (ko) | 2002-12-20 | 2002-12-20 | CaO-CaCN2 혼합 조성물에 의한 용강의탈황촉진방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020081970A KR100929179B1 (ko) | 2002-12-20 | 2002-12-20 | CaO-CaCN2 혼합 조성물에 의한 용강의탈황촉진방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040055326A true KR20040055326A (ko) | 2004-06-26 |
KR100929179B1 KR100929179B1 (ko) | 2009-12-01 |
Family
ID=37348021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020020081970A KR100929179B1 (ko) | 2002-12-20 | 2002-12-20 | CaO-CaCN2 혼합 조성물에 의한 용강의탈황촉진방법 |
Country Status (1)
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KR (1) | KR100929179B1 (ko) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100226931B1 (ko) * | 1995-12-29 | 1999-10-15 | 이구택 | 연강선재 제조시 탈가스 설비에서의 탈유방법 |
JP3904345B2 (ja) * | 1999-06-23 | 2007-04-11 | 電気化学工業株式会社 | 鉄鋼添加剤 |
KR20010111367A (ko) * | 2000-06-10 | 2001-12-17 | 이구택 | 석회질소 또는 석회슬러지계 용선 및 용강 탈황제 |
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2002
- 2002-12-20 KR KR1020020081970A patent/KR100929179B1/ko active IP Right Grant
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Publication number | Publication date |
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KR100929179B1 (ko) | 2009-12-01 |
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