KR960023122A - Refining method of ultra low carbon steel using synthetic slag - Google Patents

Refining method of ultra low carbon steel using synthetic slag Download PDF

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Publication number
KR960023122A
KR960023122A KR1019940039591A KR19940039591A KR960023122A KR 960023122 A KR960023122 A KR 960023122A KR 1019940039591 A KR1019940039591 A KR 1019940039591A KR 19940039591 A KR19940039591 A KR 19940039591A KR 960023122 A KR960023122 A KR 960023122A
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South Korea
Prior art keywords
synthetic slag
low carbon
carbon steel
ultra low
molten steel
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Application number
KR1019940039591A
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Korean (ko)
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KR970005388B1 (en
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김봉조
민병진
김윤걸
정준양
Original Assignee
김만제
포항종합제철 주식회사
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Priority to KR1019940039591A priority Critical patent/KR970005388B1/en
Publication of KR960023122A publication Critical patent/KR960023122A/en
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Publication of KR970005388B1 publication Critical patent/KR970005388B1/en

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    • 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
    • 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)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

본 발명은 진공탈가스설비(RH-OB)에서 극저탄소강을 정련하는 방법으로서, 극저탄소강을 대상으로 진공탈가스설비에서 용강을 처리할때 wt%로, CaO : 49∼61%, Al2O3/ 32∼44%, SiO : 3.0% 이하, Fe산화물 : 2.0% 이하 및 기타불순물로 직경 3∼30mm 크기의 합성슬래그 덩어리를 제조하고, 이 덩어리 상태의 합성슬래그를 진공탈가스 처리설비내의 진공조내 용강중에 투입하여 용강중 탈산생성물 및 외래성 개재물을 합성슬래그에 합체 성장시켜 부상분리 제거함으로써 용강의 청정도를 개선하는 합성슬래그를 이용한 극저탄소강의 정련방법이다.The present invention is a method for refining ultra low carbon steel in a vacuum degasser (RH-OB), the wt% when treating molten steel in a vacuum degassing facility for ultra low carbon steel, CaO: 49-61%, Al 2 O 3 / 32~44%, SiO : 3.0% or less, Fe oxide 2.0% or less and other impurities to produce a synthetic slag lumps having a diameter of 3~30mm size, the chunk state synthetic slag the vacuum degassing treatment plant It is a method for refining ultra low carbon steel using synthetic slag that improves the cleanliness of molten steel by injecting it into molten steel in a vacuum chamber and incorporating deoxidation products and foreign inclusions in molten steel into synthetic slag to remove floating flotation.

Description

합성슬래그를 이용한 극저탄소강의 정련방법Refining method of ultra low carbon steel using synthetic slag

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

제1도는 진공탈가스 설비 및 합성슬래그의 투입 개략도,1 is a schematic view of the input of vacuum degassing equipment and synthetic slag,

제2도는 본 발명의 방법에 의한 합성슬래그 입자의 개재물 포집상태도.2 is an inclusion collection state of the synthetic slag particles by the method of the present invention.

Claims (1)

극저탄소강을 대상으로 진공탈가스설비에서 용강을 처리할때 wt%로, CaO : 49∼61%, Al2O3/ 32∼44%, SiO : 3.0% 이하, Fe산화물 : 2.0% 이하 및 기타불순물로 직경 3∼30mm 크기의 합성슬래그 덩어리를 제조하고, 이 덩어리 상태의 합성슬래그를 진공탈가스 처리설비내의 진공조내 용강중에 투입하여 용강중 탈산생성물 및 외래성 개재물을 합성슬래그에 합체 성장시켜 부상분리 제거하는 것을 특징으로 하는 합성슬래그를 이용한 극저탄소강의 정련방법.When treating molten steel in vacuum degassing facilities for ultra low carbon steel, wt%, CaO: 49-61%, Al 2 O 3 / 32-44%, SiO: 3.0% or less, Fe oxide: 2.0% or less Synthetic slag with diameter of 3 ~ 30mm is made of other impurities, and the synthetic slag in the form of this mass is put into molten steel in the vacuum tank in the vacuum degassing facility, and deoxidation product and adventitious inclusions in molten steel are grown in synthetic slag to separate the flotation. Refining method of ultra-low carbon steel using a synthetic slag characterized in that the removal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940039591A 1994-12-30 1994-12-30 Refining method of low carbon steel KR970005388B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940039591A KR970005388B1 (en) 1994-12-30 1994-12-30 Refining method of low carbon steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940039591A KR970005388B1 (en) 1994-12-30 1994-12-30 Refining method of low carbon steel

Publications (2)

Publication Number Publication Date
KR960023122A true KR960023122A (en) 1996-07-18
KR970005388B1 KR970005388B1 (en) 1997-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940039591A KR970005388B1 (en) 1994-12-30 1994-12-30 Refining method of low carbon steel

Country Status (1)

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KR (1) KR970005388B1 (en)

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Publication number Publication date
KR970005388B1 (en) 1997-04-15

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