GB1137092A - A method for refining a metal - Google Patents

A method for refining a metal

Info

Publication number
GB1137092A
GB1137092A GB1188466A GB1188466A GB1137092A GB 1137092 A GB1137092 A GB 1137092A GB 1188466 A GB1188466 A GB 1188466A GB 1188466 A GB1188466 A GB 1188466A GB 1137092 A GB1137092 A GB 1137092A
Authority
GB
United Kingdom
Prior art keywords
blowing
steel
metal
inert gas
stream
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
GB1188466A
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.)
Nyby Bruk AB
Original Assignee
Nyby Bruk AB
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 Nyby Bruk AB filed Critical Nyby Bruk AB
Publication of GB1137092A publication Critical patent/GB1137092A/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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

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

Abstract

1,137,092. Removing constituents from metals; steel alloy. NYBY BRUKS A.B. March 17, 1966 [March 19, 1965], No.11664/66. Headings C7A and C7D. A metal is refined by blowing a stream of inert gas containing 0À005-10% by volume oxygen against the solid metal surface during heating up to its melting point, and blowing a stream of inert gas containing less than 0À01% by volume of oxygen against the molten metal surface. The metal may be heated discontinuously, halting at a temperature at which a solid impurity leaves the solid metal. For example, stainless scrap steel of composition 0À05%C, 18%Cr, 14%Ni, 3À5% Mo, balance Fe, may be heated up in a high frequency electric furnace while blowing on to its surface argon containing 1-2% by volume oxygen, halting at 750- 850‹ C. to allow Mo to escape from the steel as brown MoO 3 smoke, and after melting, blowing on to the molten steel surface argon containing less than 0À01% by volume oxygen when temperature has reached 1600-1700‹ C., to remove gaseous impurities e. g. hydrogen therefrom; the finished steel may contain less than 0À5% Mo and a reduced C content. Powdered alloying constituent may be supplied to the inert gas stream.
GB1188466A 1965-03-19 1966-03-17 A method for refining a metal Expired GB1137092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE359865 1965-03-19

Publications (1)

Publication Number Publication Date
GB1137092A true GB1137092A (en) 1968-12-18

Family

ID=20262454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1188466A Expired GB1137092A (en) 1965-03-19 1966-03-17 A method for refining a metal

Country Status (5)

Country Link
US (1) US3468657A (en)
AT (1) AT296360B (en)
BE (1) BE678013A (en)
DE (1) DE1281465B (en)
GB (1) GB1137092A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190924A (en) * 1986-05-23 1987-12-02 Leybold Heraeus Gmbh & Co Kg Process for melting down and degassing lumpy material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916945C3 (en) * 1969-04-02 1980-04-17 Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg Use of the jacket gas process for refining pig iron to steel
US3769000A (en) * 1971-10-04 1973-10-30 Steel Corp Method for operating basic oxygen steel processes with the introduction of carbon dioxide
US4615730A (en) * 1985-04-30 1986-10-07 Allegheny Ludlum Steel Corporation Method for refining molten metal bath to control nitrogen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826489A (en) * 1953-12-18 1958-03-11 Nyby Bruk Ab Method for the manufacture of gas-pure metals and alloys
GB772515A (en) * 1953-12-18 1957-04-17 Nyby Bruk Ab A method for the manufacture of metals and alloys free from undesired gases
US3307937A (en) * 1964-04-28 1967-03-07 Nyby Bruk Ab Method when degassing carboncontaining metal melts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190924A (en) * 1986-05-23 1987-12-02 Leybold Heraeus Gmbh & Co Kg Process for melting down and degassing lumpy material
GB2190924B (en) * 1986-05-23 1990-01-17 Leybold Heraeus Gmbh & Co Kg Process for melting down and degassing lumpy material
AT396836B (en) * 1986-05-23 1993-12-27 Leybold Ag METHOD FOR MELTING AND DEGASSING PIECE INSERT MATERIAL

Also Published As

Publication number Publication date
US3468657A (en) 1969-09-23
BE678013A (en) 1966-09-01
DE1281465B (en) 1969-05-29
AT296360B (en) 1972-02-10

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