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GB1346343A - Method and apparatus for making steel - Google Patents

Method and apparatus for making steel

Info

Publication number
GB1346343A
GB1346343A GB2732371A GB2732371A GB1346343A GB 1346343 A GB1346343 A GB 1346343A GB 2732371 A GB2732371 A GB 2732371A GB 2732371 A GB2732371 A GB 2732371A GB 1346343 A GB1346343 A GB 1346343A
Authority
GB
United Kingdom
Prior art keywords
stirring
charge
steel
ore
april
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
GB2732371A
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.)
Finkl & Sons Co
Original Assignee
Finkl & Sons Co
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
Application filed by Finkl & Sons Co filed Critical Finkl & Sons Co
Publication of GB1346343A publication Critical patent/GB1346343A/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
    • 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
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle

Landscapes

  • 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

1346343 Decarburizing A FINKL & SONS CO 19 April 1971 [21 April 1970] 27323/71 Heading C7D Extra-low carbon(#0À03%) steel is produced by adding an oxidising medium in controlled amounts downwardly from one or more points to the surface of a molten steel charge having a C content higher than the desired final value, while subjecting the charge to vacuum and meanwhile stirring it in such manner that the metalvacuum or metal-slag-vacuum interface is interrupted to present undecarburised steel to the oxidising medium, and adding heat by striking an electric arc between an electrode and the charge. Ladle 72 for molten metal has purging gas inlets 73, 74, arc electrodes 53, 54, thermocouple 64, feed hopper 68 and O 2 lance 42 behind the electrodes Fig.3 (not shown). The initial charge is preferably stainless steel with as low a C content as can be conventionally obtained without oxidation of Cr, and stirring is preferably by gas purging e.g. with Ar, with or without other stirring, e.g. induction stirring. An endothermic decarburizer such as millscale, Fe ore, Cr ore or NiO may be used; the heat balance is provided by electric arc heating with or without O 2 lance heating - the O 2 may contain cooling gas if necessary.
GB2732371A 1970-04-21 1971-04-19 Method and apparatus for making steel Expired GB1346343A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3056870A 1970-04-21 1970-04-21

Publications (1)

Publication Number Publication Date
GB1346343A true GB1346343A (en) 1974-02-06

Family

ID=21854826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2732371A Expired GB1346343A (en) 1970-04-21 1971-04-19 Method and apparatus for making steel

Country Status (3)

Country Link
CA (1) CA944567A (en)
DE (1) DE2026780A1 (en)
GB (1) GB1346343A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134336A1 (en) * 1983-08-16 1985-03-20 William Lyon Sherwood Continuous steelmaking and casting
EP0725151A4 (en) * 1994-05-25 1998-04-22 Hitachi Metals Ltd Method and apparatus for refining molten metal
CN102965476A (en) * 2012-11-30 2013-03-13 宝钢工程技术集团有限公司 Electrode rotation double-station electric arc heating vacuum treatment device and using method thereof
EP4406916A1 (en) * 2023-01-27 2024-07-31 HPQ Silicium Inc. Apparatus and method for producing silicon by carboreduction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51125619A (en) * 1975-04-18 1976-11-02 Nisshin Steel Co Ltd Process for producing extra low corbon steel
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060015A (en) * 1960-03-22 1962-10-23 Ruhrstahl Ag Steel purification
DE1758107B2 (en) * 1968-04-04 1976-03-04 Edelstahlwerk Witten Ag, 5810 Witten PROCESS FOR MANUFACTURING STAINLESS CHROME AND CHROME-NICKEL STEELS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134336A1 (en) * 1983-08-16 1985-03-20 William Lyon Sherwood Continuous steelmaking and casting
EP0725151A4 (en) * 1994-05-25 1998-04-22 Hitachi Metals Ltd Method and apparatus for refining molten metal
CN102965476A (en) * 2012-11-30 2013-03-13 宝钢工程技术集团有限公司 Electrode rotation double-station electric arc heating vacuum treatment device and using method thereof
EP4406916A1 (en) * 2023-01-27 2024-07-31 HPQ Silicium Inc. Apparatus and method for producing silicon by carboreduction
FR3145359A1 (en) * 2023-01-27 2024-08-02 HPQ Silicium Inc. APPARATUS AND METHOD FOR PRODUCING SILICON BY CARBOREDUCTION

Also Published As

Publication number Publication date
DE2026780A1 (en) 1971-11-04
CA944567A (en) 1974-04-02
DE2026780C2 (en) 1988-06-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee