KR940013665A - Transformation method to prevent molten steel - Google Patents

Transformation method to prevent molten steel Download PDF

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Publication number
KR940013665A
KR940013665A KR1019920026509A KR920026509A KR940013665A KR 940013665 A KR940013665 A KR 940013665A KR 1019920026509 A KR1019920026509 A KR 1019920026509A KR 920026509 A KR920026509 A KR 920026509A KR 940013665 A KR940013665 A KR 940013665A
Authority
KR
South Korea
Prior art keywords
molten steel
slag
tap
converter
vortex
Prior art date
Application number
KR1019920026509A
Other languages
Korean (ko)
Other versions
KR950009438B1 (en
Inventor
박종민
금창훈
손재웅
하창수
Original Assignee
박득표
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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 박득표, 포항종합제철 주식회사, 백덕현, 재단법인산업과학기술연구소 filed Critical 박득표
Priority to KR1019920026509A priority Critical patent/KR950009438B1/en
Publication of KR940013665A publication Critical patent/KR940013665A/en
Application granted granted Critical
Publication of KR950009438B1 publication Critical patent/KR950009438B1/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
    • 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
    • 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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories

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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

본 발명은 제강공정중 전로에서 취련종료후 수강레이들로 출강하는 과정에서 용강과 함께 유출되는 슬래그의 혼입을 방지할 뿐만 아니라 복린발생을 효과적으로 억제할 수 있는 전로출강방법에 관한 것이다.The present invention relates to a converter outgoing method that can prevent the mixing of slag flowing out with the molten steel in the process of going out to the tap ladle after the completion of the blow in the converter during the steelmaking process, and effectively suppress the occurrence of fulyrin.

본 발명에 따라서, 전로출강시 출강구 상부 탕면위의 일정높이에 설치된 분사노즐을 통하여 불활성가스와 플러스분체를 분사시킴에 의하여, 직경이 출강구직경보다 크고 깊이가 슬래그층 두께보다 큰 공동(cavity)를 출강구 상부용강탕면에 형성시켜 나탕을 형성시킴으로써 슬래그의 혼입을 방지할 뿐만 아니라 나탕에 형성되는 와류에 분사된 플럭스가 와류에 말려 용강과 충분히 혼합되게 함으로써 복린 발생을 억제하여 용강의 품질을 향상시키는 방법이 제공된다.According to the present invention, by injecting inert gas and plus powder through a spray nozzle installed at a certain height above the tap surface when the converter is pulled out, the diameter is larger than the tap diameter and the depth is larger than the slag layer thickness. ) Is formed on the upper molten steel surface of the tapping hole to form slag, which not only prevents slag from mixing, but also allows the flux sprayed on the vortex formed in the molten steel to be mixed with molten steel by drying it in the vortex to suppress the occurrence of fumes, thereby improving the quality of molten steel. A method of improving is provided.

Description

용강복린 방지를 위한 전로출강방법Transformation method to prevent molten steel

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도 : 본 발명의 방법에 따른 전로출강수단의 개략도,1 is a schematic diagram of a converter leaving means according to the method of the present invention,

제2도 : 본 발명의 방법에 따른 플럭스 분체 분사공정의 개략도,2 is a schematic diagram of a flux powder spraying process according to the method of the present invention,

제3도는 : 본 발명의 방법 및 공지방법(비교예)에 의한 출강후 용강복린양을 비교도시한 그래프.3 is a graph showing a comparison of the amount of molten steel after tapping by the method of the present invention and a known method (comparative example).

Claims (1)

수강레이들내 용강복린을 방지하는 방법에 있어서, 전로출강시 출강구 상부탕면위에 설치된 분사노즐을 통하여 불활성가스와 플럭스 분체를 동시에 분사함으로써 출강구 상부탕면을 나탕으로서 형성시켜 슬래그 혼입을 방지함과 동시에 플럭스분가 용강와류에 취입되어 용강과 충분히 혼합됨에 따라 수강레이들내 용강의 복린이 방지되도록 한 것을 특징으로 하는 용강 복린 방지를 위한 전로출강방법.In the method of preventing molten steel in the water ladle, the inlet gas and the flux powder are sprayed at the same time by spraying inert gas and flux powder at the same time through the injection nozzle installed on the upper tap surface during tapping to prevent slag mixing. And at the same time as the flux powder is blown into the molten steel vortex and sufficiently mixed with the molten steel to prevent the melting of the molten steel in the steel ladle. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920026509A 1992-12-30 1992-12-30 Tapping method of converter KR950009438B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920026509A KR950009438B1 (en) 1992-12-30 1992-12-30 Tapping method of converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920026509A KR950009438B1 (en) 1992-12-30 1992-12-30 Tapping method of converter

Publications (2)

Publication Number Publication Date
KR940013665A true KR940013665A (en) 1994-07-15
KR950009438B1 KR950009438B1 (en) 1995-08-22

Family

ID=19347645

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920026509A KR950009438B1 (en) 1992-12-30 1992-12-30 Tapping method of converter

Country Status (1)

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KR (1) KR950009438B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101309729B1 (en) * 2011-12-08 2013-09-17 재단법인 포항산업과학연구원 Method for manufacturing iron-based powders using converter molten steel
WO2015102190A1 (en) * 2013-12-30 2015-07-09 주식회사 우진 Gas injection lance having rotating injecting nozzle, and slag outflow preventing device equipped with same

Also Published As

Publication number Publication date
KR950009438B1 (en) 1995-08-22

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