ATE160179T1 - METHOD FOR TREATING METAL MELTS WITH A TREATMENT GAS COOLED BELOW AMBIENT TEMPERATURE - Google Patents

METHOD FOR TREATING METAL MELTS WITH A TREATMENT GAS COOLED BELOW AMBIENT TEMPERATURE

Info

Publication number
ATE160179T1
ATE160179T1 AT95108737T AT95108737T ATE160179T1 AT E160179 T1 ATE160179 T1 AT E160179T1 AT 95108737 T AT95108737 T AT 95108737T AT 95108737 T AT95108737 T AT 95108737T AT E160179 T1 ATE160179 T1 AT E160179T1
Authority
AT
Austria
Prior art keywords
gas
metal melts
ambient temperature
treatment gas
cooled below
Prior art date
Application number
AT95108737T
Other languages
German (de)
Inventor
Georg Veranneman
Original Assignee
Linde 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 Linde Ag filed Critical Linde Ag
Application granted granted Critical
Publication of ATE160179T1 publication Critical patent/ATE160179T1/en

Links

Classifications

    • 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
    • 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
    • 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
    • C21C2250/00—Specific additives; Means for adding material different from burners or lances
    • C21C2250/04—Liquid gas
    • C21C2250/042—Liquid oxygen

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

Abstract

The method concerns treatment of metal melts with a process gas (in particular, iron melts with oxygen) by blowing this process gas over given time interval into or onto the melt. The process gas used is cooled to a temp. substantially below the surroundings temp.. The appts. includes a gas lance (L) leading to the process vessel (K), a liq gas storage vessel (1), a heat exchanger unit (4), a liq gas level regulator (5), pressure regulators (6, 8) and a gas delivery line (10).
AT95108737T 1995-01-23 1995-06-07 METHOD FOR TREATING METAL MELTS WITH A TREATMENT GAS COOLED BELOW AMBIENT TEMPERATURE ATE160179T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19501871A DE19501871A1 (en) 1995-01-23 1995-01-23 Process for treating molten metals with a treatment gas

Publications (1)

Publication Number Publication Date
ATE160179T1 true ATE160179T1 (en) 1997-11-15

Family

ID=7752063

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95108737T ATE160179T1 (en) 1995-01-23 1995-06-07 METHOD FOR TREATING METAL MELTS WITH A TREATMENT GAS COOLED BELOW AMBIENT TEMPERATURE

Country Status (5)

Country Link
EP (1) EP0723022B1 (en)
AT (1) ATE160179T1 (en)
CZ (1) CZ18696A3 (en)
DE (2) DE19501871A1 (en)
ES (1) ES2109035T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732607A (en) * 1985-11-26 1988-03-22 Sumitomo Metal Industries, Ltd. Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance onto a molten metal surface
EP0377597A1 (en) * 1987-08-24 1990-07-18 MANNESMANN Aktiengesellschaft Process and device for minimizing process gas consumption in metallurgical processes
DE4315342C1 (en) * 1993-05-08 1994-02-24 Messer Griesheim Gmbh Treating molten metal, in partic. steel with a purifying agent - with liquid oxygen or a two=phase mixt. of liq and gaseous oxygen used as the purifying agent

Also Published As

Publication number Publication date
DE19501871A1 (en) 1996-07-25
ES2109035T3 (en) 1998-01-01
CZ18696A3 (en) 1996-08-14
EP0723022B1 (en) 1997-11-12
EP0723022A1 (en) 1996-07-24
DE59500981D1 (en) 1997-12-18

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