GB1488686A - Process for vacuum decarburization - Google Patents

Process for vacuum decarburization

Info

Publication number
GB1488686A
GB1488686A GB4562474A GB4562474A GB1488686A GB 1488686 A GB1488686 A GB 1488686A GB 4562474 A GB4562474 A GB 4562474A GB 4562474 A GB4562474 A GB 4562474A GB 1488686 A GB1488686 A GB 1488686A
Authority
GB
United Kingdom
Prior art keywords
oct
nozzle
laval nozzle
decarburization
water
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB4562474A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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.)
Filing date
Publication date
Priority claimed from JP11915373A external-priority patent/JPS5324008B2/ja
Priority claimed from JP14107473A external-priority patent/JPS5319443B2/ja
Priority claimed from JP1203774A external-priority patent/JPS5546445B2/ja
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of GB1488686A publication Critical patent/GB1488686A/en
Expired legal-status Critical Current

Links

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
    • C21C7/10—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
    • 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
    • C21C5/4606—Lances or injectors

Landscapes

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

Abstract

1488686 Blowing lances SUMITOMO METAL INDUSTRIES Ltd 22 Oct 1974 [22 Oct 1973 14 Dec 1973 28 Jan 1974] 45624/74 Heading F4B [Also in Division C7] In the decarburization of steel, oxygen is blown upon the melt surface by a lance having a Laval nozzle cooled by means of atomized liquid water. The cooling device for the Laval nozzle 2 includes an air inlet 8, passages 6 and 7 and outlet 9, the water being introduced through nozzle 11 of pipe 10 into a constricted region 12 of inner passage 6 to effect complete atomization.
GB4562474A 1973-10-22 1974-10-22 Process for vacuum decarburization Expired GB1488686A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11915373A JPS5324008B2 (en) 1973-10-22 1973-10-22
JP14107473A JPS5319443B2 (en) 1973-12-14 1973-12-14
JP1203774A JPS5546445B2 (en) 1974-01-28 1974-01-28

Publications (1)

Publication Number Publication Date
GB1488686A true GB1488686A (en) 1977-10-12

Family

ID=27279681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4562474A Expired GB1488686A (en) 1973-10-22 1974-10-22 Process for vacuum decarburization

Country Status (5)

Country Link
AT (1) AT341558B (en)
CA (1) CA1030354A (en)
DE (1) DE2450196C3 (en)
GB (1) GB1488686A (en)
SE (1) SE425256B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162932A (en) * 1984-07-11 1986-02-12 Tolltreck Systems Limited Cooling metallurgical apparatus
EP0879896A1 (en) * 1996-10-08 1998-11-25 POHANG IRON & STEEL CO., LTD. Molten steel smelting apparatus for producing ultra-low carbon steel and a smelting method using this apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426224A (en) * 1981-12-25 1984-01-17 Sumitomo Kinzoku Kogyo Kabushiki Gaisha Lance for powder top-blow refining and process for decarburizing and refining steel by using the lance
SE447675B (en) * 1982-10-15 1986-12-01 Ifm Dev Ab Nozzle for injection injection
DE4221266C1 (en) * 1992-06-26 1993-10-21 Mannesmann Ag Method and device for inflating oxygen on molten metals
DE4442362C1 (en) * 1994-11-18 1996-04-18 Mannesmann Ag Method and appts. for performing a variety of processes on a melt using standard equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162932A (en) * 1984-07-11 1986-02-12 Tolltreck Systems Limited Cooling metallurgical apparatus
EP0879896A1 (en) * 1996-10-08 1998-11-25 POHANG IRON & STEEL CO., LTD. Molten steel smelting apparatus for producing ultra-low carbon steel and a smelting method using this apparatus
EP0879896A4 (en) * 1996-10-08 1999-12-15 Po Hang Iron & Steel Molten steel smelting apparatus for producing ultra-low carbon steel and a smelting method using this apparatus

Also Published As

Publication number Publication date
SE425256B (en) 1982-09-13
AT341558B (en) 1978-02-10
DE2450196C3 (en) 1978-06-22
CA1030354A (en) 1978-05-02
DE2450196B2 (en) 1977-11-03
DE2450196A1 (en) 1975-04-30
ATA849974A (en) 1977-06-15
SE7413219L (en) 1975-04-23

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19941021