KR940014832A - 2nd refining upper lance - Google Patents

2nd refining upper lance Download PDF

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Publication number
KR940014832A
KR940014832A KR1019920026535A KR920026535A KR940014832A KR 940014832 A KR940014832 A KR 940014832A KR 1019920026535 A KR1019920026535 A KR 1019920026535A KR 920026535 A KR920026535 A KR 920026535A KR 940014832 A KR940014832 A KR 940014832A
Authority
KR
South Korea
Prior art keywords
lance
refining
secondary refining
present
nozzle
Prior art date
Application number
KR1019920026535A
Other languages
Korean (ko)
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KR940008452B1 (en
Inventor
이백
Original Assignee
박득표
포항종합제철 주식회사
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Application filed by 박득표, 포항종합제철 주식회사 filed Critical 박득표
Priority to KR1019920026535A priority Critical patent/KR940008452B1/en
Publication of KR940014832A publication Critical patent/KR940014832A/en
Application granted granted Critical
Publication of KR940008452B1 publication Critical patent/KR940008452B1/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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

본 발명은 래들에서의 2차정련시 용강을 교반하기 위한 2차정련용 상취랜스에 관한 것으로서, 용강의 교반을 위한 통상적인 상취랜스의 노즐을 개량하여 쥐입개스의 류양제어가 가능하고, 그리고 미세한 버블이 형성되도록 한 2차정련용 상취랜스를 제공하고자 하는데, 그 목적이 있다.The present invention relates to a secondary refining lance for agitating molten steel during secondary refining in a ladle, and is capable of controlling the flow rate of a rat mouth gas by improving a nozzle of a conventional upper lance for agitating molten steel. It is an object of the present invention to provide a secondary refreshing lance allowing bubbles to be formed.

본 발명은 취입개스 통로가 내부에 구비되어 있는 철골구조, 및 상기 철곡구조의 외부에 시공되어 있는 캐스타블로 이루어지고, 그리고, 철골구조의 개스 도입부와 대향되는 위치에 다수개의노즐이 형성되어 구성되는 2차정련용 상취랜스에 있어서, 그 내측의 내경보다 외측의 내경이 더 적도록 형성된 플러그 수용부(212a)가 상기 노즐에 형성되고, 그리고 그 내부에는 다공성 플러그(23)가 삽입되어 구성되는 2차정련용 상취랜스를 그 요지로 한다.The present invention consists of a steel frame structure having a blown gas passage therein, and a caster constructed on the outside of the curved structure, and a plurality of nozzles are formed at positions opposite to the gas inlet portion of the steel structure. In the secondary refining upper lance, a plug receiving portion 212a formed so that the inner diameter of the outer side is smaller than the inner diameter of the inner side is formed in the nozzle, and the inside is formed by inserting the porous plug 23 therein. The upper refinery lance for car refining is the main point.

Description

2차 정련용 상취랜스2nd refining upper lance

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

제3도는 본 발명에 부합되는 상취랜스를 나타내는 단면도,3 is a cross-sectional view showing the upper lance according to the present invention,

제4도는 본 발명의 상취랜스를 사용하여 래들내의 용강을 교반하는 것을 나타내는 본 발명 상취랜스의 사용상태.4 is a state of use of the present invention upper lance showing the stirring of the molten steel in the ladle using the above-mentioned lance upper lance.

Claims (2)

취입개스 통로가 내부에 구비되어 있는 철골구조, 및 상기 철골구조의 외부에 시공되어 있는 캐스타블로 이루어지고, 그리고 철골구조의 개스도입부와 대향되는 위치에 다수개의 노즐이 형성되어 구성되는 2차정련용 상취랜스에 있어서, 그 내측의 내경보다 외측의 내경이 더 적도록 형성된 플러그 수용부 (212a)가 상기 노즐에 형성되고; 그리고 그 내부에는 다공성 플러그(23)가 삽입되어 구성됨을 특징으로 하는 2차정련용 상취랜스.Secondary refining is composed of a steel frame structure having a blown gas passage therein, and a caster constructed on the outside of the steel structure, and a plurality of nozzles are formed in a position opposite to the gas introduction portion of the steel structure In the upper lance, a plug receiving portion (212a) is formed in the nozzle so that the inner diameter of the outer side is smaller than that of the inner side thereof; And inside the porous lance upper lance, characterized in that the porous plug 23 is inserted. 제1항에 있어서, 다공성 플러그가 25-40%의 기공율을 갖도록 형성되는 것을 특징으로 하는 2차 정련용 상취랜스.According to claim 1, Secondary refining upper lance, characterized in that the porous plug is formed to have a porosity of 25-40%. ※참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: This is to be disclosed based on the first application.
KR1019920026535A 1992-12-30 1992-12-30 Lance KR940008452B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920026535A KR940008452B1 (en) 1992-12-30 1992-12-30 Lance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920026535A KR940008452B1 (en) 1992-12-30 1992-12-30 Lance

Publications (2)

Publication Number Publication Date
KR940014832A true KR940014832A (en) 1994-07-19
KR940008452B1 KR940008452B1 (en) 1994-09-15

Family

ID=19347683

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920026535A KR940008452B1 (en) 1992-12-30 1992-12-30 Lance

Country Status (1)

Country Link
KR (1) KR940008452B1 (en)

Also Published As

Publication number Publication date
KR940008452B1 (en) 1994-09-15

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Free format text: OPPOSITION NUMBER: 001994001618; OPPOSITION DATE: 19941111

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