ES342836A1 - Process for melting and decarburising steel scrap - Google Patents

Process for melting and decarburising steel scrap

Info

Publication number
ES342836A1
ES342836A1 ES342836A ES342836A ES342836A1 ES 342836 A1 ES342836 A1 ES 342836A1 ES 342836 A ES342836 A ES 342836A ES 342836 A ES342836 A ES 342836A ES 342836 A1 ES342836 A1 ES 342836A1
Authority
ES
Spain
Prior art keywords
melting
steel scrap
decarburising
oxide
melt
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
ES342836A
Other languages
Spanish (es)
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.)
Vereinigte Deutsche Metallwerke AG
Ver Deutsche Metallwerke AG
Original Assignee
Vereinigte Deutsche Metallwerke AG
Ver Deutsche Metallwerke AG
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 Vereinigte Deutsche Metallwerke AG, Ver Deutsche Metallwerke AG filed Critical Vereinigte Deutsche Metallwerke AG
Publication of ES342836A1 publication Critical patent/ES342836A1/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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • 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
    • 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
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • 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
    • 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
    • C21C5/5241—Manufacture of steel in electric furnaces in an inductively heated furnace
    • 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
    • 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
    • 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
    • Y02P10/25—Process efficiency

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)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Steel scrap containing more than 17% Cr, or Cr and Ni, or Cr, Ni and Mo is melted and decarburized to produce an end product having 0À03% C or less by first melting it in an arc furnace where the melt is adjusted to the metallic composition desired and any Al, Ti and Si removed by addition of a stoichiometric amount of oxygen or metal oxide, and then transferring the melt to a vacuum induction furnace where decarburization is effected by the addition of oxygen or an oxide such as Fe, Mn or Ni oxide.
ES342836A 1966-10-27 1967-07-10 Process for melting and decarburising steel scrap Expired ES342836A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0032211 1966-10-27

Publications (1)

Publication Number Publication Date
ES342836A1 true ES342836A1 (en) 1968-08-16

Family

ID=7587082

Family Applications (1)

Application Number Title Priority Date Filing Date
ES342836A Expired ES342836A1 (en) 1966-10-27 1967-07-10 Process for melting and decarburising steel scrap

Country Status (7)

Country Link
AT (1) AT272391B (en)
BE (1) BE705654A (en)
DE (1) DE1508296B2 (en)
ES (1) ES342836A1 (en)
GB (1) GB1149133A (en)
SE (1) SE312818B (en)
SU (1) SU405208A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3278570D1 (en) * 1982-02-01 1988-07-07 Allied Iron Co Processed ferrous metal and process of production
FR2553435A1 (en) * 1983-10-12 1985-04-19 Commissariat Energie Atomique Process for the treatment of a steel containing metal elements, especially cobalt and/or nickel, with a view to removing these elements from the steel.
LU90232B1 (en) * 1998-04-08 1999-10-11 Wurth Paul Sa Manufacturing process of stainless steels and steels with high levels of alloying elements

Also Published As

Publication number Publication date
SE312818B (en) 1969-07-28
BE705654A (en) 1968-03-01
GB1149133A (en) 1969-04-16
DE1508296A1 (en) 1969-05-29
DE1508296B2 (en) 1970-09-10
AT272391B (en) 1969-07-10
SU405208A3 (en) 1973-10-22

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