SE8701578L - METHOD AND DEVICE FOR TREATING A MELT - Google Patents

METHOD AND DEVICE FOR TREATING A MELT

Info

Publication number
SE8701578L
SE8701578L SE8701578A SE8701578A SE8701578L SE 8701578 L SE8701578 L SE 8701578L SE 8701578 A SE8701578 A SE 8701578A SE 8701578 A SE8701578 A SE 8701578A SE 8701578 L SE8701578 L SE 8701578L
Authority
SE
Sweden
Prior art keywords
melt
nozzle
plasmatron
plasma
outlet
Prior art date
Application number
SE8701578A
Other languages
Swedish (sv)
Other versions
SE8701578D0 (en
Inventor
L I Parfenov
V P Podoinikov
N A Svidunovich
V N Volkov
S A Burenkov
A I Garost
V K Litvinov
G A Sorokin
V V Vashkevich
Original Assignee
Bruss Ti Kirova
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 Bruss Ti Kirova filed Critical Bruss Ti Kirova
Publication of SE8701578D0 publication Critical patent/SE8701578D0/en
Publication of SE8701578L publication Critical patent/SE8701578L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/005—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys using plasma jets
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B2014/002—Smelting process, e.g. sequences to melt a specific material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0031—Plasma-torch heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/0026—Introducing additives into the melt

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Furnace Details (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Melt treatment involves forming a flow of low-temperature plasma by passing plasma forming agent through the arc and introducing the low temperature plasma stream to the metal melt. The plasma stream should be introduced into the melt from within this, from the meniscus side at a rate of up to 1500 m/sec so as to mix the melt, feeding in additives previously led through the plasma stream. The additives preferably contain nitrogen and comprise slagging fillers crushed beforehand to 0.1 to 1.0mm and with 0 to 100% oxygen content relative the plasma forming agent volume. - Equipment includes a plasmatron reciprocating in the vertical over the melt meniscus. The plasmatron should be fitted with a nozzle connected to the plasmatron endface directed toward the melt. The inlet section of the nozzle should equal the plasmatron outlet section at the plasma stream exit and the nozzle should be immersed in the melt to a length between 0.1 and 0.8 of the height of the column of melt. Preferably the plasmatron can adjust in the horizontal plane and is in jet design, with external plasMa arc. At its outlet the nozzle should be fitted with a plate whose centre hole coincides with the inside nozzle bore, and whose continuous vertical channels increase in number from the centre outwards. The nozzle should also have an additives feed orifice at the outlet.
SE8701578A 1985-08-16 1987-04-15 METHOD AND DEVICE FOR TREATING A MELT SE8701578L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1985/000071 WO1987001137A1 (en) 1985-08-16 1985-08-16 Method and device for treatment of melt

Publications (2)

Publication Number Publication Date
SE8701578D0 SE8701578D0 (en) 1987-04-15
SE8701578L true SE8701578L (en) 1987-04-15

Family

ID=21616936

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8701578A SE8701578L (en) 1985-08-16 1987-04-15 METHOD AND DEVICE FOR TREATING A MELT

Country Status (6)

Country Link
JP (1) JPS63500043A (en)
DE (2) DE3590837T1 (en)
FI (1) FI81383C (en)
GB (1) GB2189508B (en)
SE (1) SE8701578L (en)
WO (1) WO1987001137A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO157876C (en) * 1985-09-23 1988-06-01 Sintef METHOD AND APPARATUS FOR IMPLEMENTING HEAT TREATMENT.
US4997476A (en) * 1988-12-08 1991-03-05 Plasma Energy Corporation Recovery of free aluminum from aluminum dross using plasma energy without use of a salt flux
DE4336628A1 (en) * 1993-10-27 1995-05-04 Messer Griesheim Gmbh Electrode system
AU2109795A (en) * 1994-03-18 1995-10-09 Sahm, Peter R. Casting materials
AUPN595095A0 (en) * 1995-10-16 1995-11-09 Bhp Steel (Jla) Pty Limited Heating molten metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547622A (en) * 1968-06-12 1970-12-15 Pennwalt Corp D.c. powered plasma arc method and apparatus for refining molten metal
US4002466A (en) * 1975-11-03 1977-01-11 Bethlehem Steel Corporation Method of reducing ores
US4060409A (en) * 1976-02-23 1977-11-29 Kennecott Copper Corporation Mechanically stirred furnace for pyrometallurgical operations and processes

Also Published As

Publication number Publication date
FI81383B (en) 1990-06-29
DE3590837T1 (en) 1987-07-16
GB2189508B (en) 1990-12-05
GB2189508A (en) 1987-10-28
FI81383C (en) 1990-10-10
WO1987001137A1 (en) 1987-02-26
FI871665A0 (en) 1987-04-15
JPS63500043A (en) 1988-01-07
GB8708931D0 (en) 1987-05-20
DE3590837C2 (en) 1988-10-06
FI871665A (en) 1987-04-15
JPS646243B2 (en) 1989-02-02
SE8701578D0 (en) 1987-04-15

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Legal Events

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Ref document number: 8701578-0

Effective date: 19911213