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FI20010899A7 - Tasavirtavalokaariuunin toiminta - Google Patents

Tasavirtavalokaariuunin toiminta Download PDF

Info

Publication number
FI20010899A7
FI20010899A7 FI20010899A FI20010899A FI20010899A7 FI 20010899 A7 FI20010899 A7 FI 20010899A7 FI 20010899 A FI20010899 A FI 20010899A FI 20010899 A FI20010899 A FI 20010899A FI 20010899 A7 FI20010899 A7 FI 20010899A7
Authority
FI
Finland
Prior art keywords
arc
furnace
components
path
arc furnace
Prior art date
Application number
FI20010899A
Other languages
English (en)
Swedish (sv)
Other versions
FI20010899L (fi
Inventor
Jan Abraham Ferreira
Anthony Wayne Wewege
Original Assignee
Anglo Operations Ltd
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 Anglo Operations Ltd filed Critical Anglo Operations Ltd
Publication of FI20010899L publication Critical patent/FI20010899L/fi
Publication of FI20010899A7 publication Critical patent/FI20010899A7/fi

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

Tasavirtavalokaariuunin käytön aikana uunin komponentteja valvotaan ei-toivottujen valokaarien ilmaisemiseksi. Komponenttien välille muodostetaan jatkuva ensimmäinen pieni-impedanssinen reitti. Kun valokaari on havaittu, muodostetaan ensimmäisen pieni-impedanssisen reitin rinnalle komponenttien välille toinen johtava reitti, jolla on ennalta määrätty impedanssi, valokaaren sammuttamiseksi. Kun valokaari on sammutettu, toinen reitti katkaistaan uunin palauttamiseksi normaaliin toimintaan. Kuva l.
FI20010899A 1998-10-28 1999-10-28 Tasavirtavalokaariuunin toiminta FI20010899A7 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA989803 1998-10-28
PCT/ZA1999/000111 WO2000025553A1 (en) 1998-10-28 1999-10-28 Dc arc furnace operation

Publications (2)

Publication Number Publication Date
FI20010899L FI20010899L (fi) 2001-04-30
FI20010899A7 true FI20010899A7 (fi) 2001-04-30

Family

ID=25587360

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20010899A FI20010899A7 (fi) 1998-10-28 1999-10-28 Tasavirtavalokaariuunin toiminta

Country Status (8)

Country Link
US (1) US6192065B1 (fi)
AU (1) AU757828B2 (fi)
BR (1) BR9914576A (fi)
CA (1) CA2346139A1 (fi)
FI (1) FI20010899A7 (fi)
NO (1) NO20011627D0 (fi)
NZ (1) NZ510929A (fi)
WO (1) WO2000025553A1 (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101358609A (zh) * 2007-08-03 2009-02-04 富准精密工业(深圳)有限公司 风扇转子
US20240345151A1 (en) * 2021-09-10 2024-10-17 Nitto Kogyo Corporation Plug-Type Electric Discharge Detection Unit and Electric Discharge Detection System

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385920A (en) 1965-10-01 1968-05-28 Allegheny Ludlum Steel Control system for consumable electrode furnace
US3929456A (en) 1972-05-05 1975-12-30 Reynolds Metals Co Carbothermic production of aluminum
US3937869A (en) 1974-10-08 1976-02-10 Republic Steel Corporation Force sensing control apparatus and method for electric arc furnaces
US4063028A (en) 1976-06-14 1977-12-13 Longenecker Levi S Suspended roof for electric arc furnace
US4273949A (en) 1979-04-17 1981-06-16 Fried. Krupp Huttenwerke Aktiengesellschaft Arc furnace roof
SE452542B (sv) * 1983-04-21 1987-11-30 Asea Ab Likstroms-ljusbagsugn
US4677643A (en) 1984-03-09 1987-06-30 Licentia Patent-Verwaltungs-Gmbh Device for feeding one or a plurality of electrodes in an electrothermal furnace
US4881239A (en) 1987-07-14 1989-11-14 Leybold Aktiengesellschaft Fault detection during remelt of electrodes into blocks
IT1236363B (it) * 1989-11-30 1993-02-25 Danieli Off Mecc Forno elettrico ad arco diretto a corrente controllata e procedimento di alimentazione a corrente controllata di un forno ad arco diretto
US5009703A (en) 1990-08-13 1991-04-23 Dow Corning Corporation Silicon smelting process in direct current furnace
GB9018441D0 (en) 1990-08-22 1990-10-03 Tetronics Res & Dev Co Ltd Treatment of oxide containing dusts
AU647576B2 (en) * 1991-02-08 1994-03-24 Asea Brown Boveri Limited Process for electrode control of a DC arc furnace, and an electrode control device
DE4309640A1 (de) * 1993-03-25 1994-09-29 Abb Management Ag Gleichstrom-Lichtbogenofenanlage
FR2704710B1 (fr) * 1993-04-30 1995-06-23 Cegelec Metals Systems Dispositif convertisseur de puissance perfectionné pour l'alimentation en courant continu d'un four électrique à arc.
DE4343899A1 (de) * 1993-12-22 1995-06-29 Abb Management Ag Regelungsverfahren für einen Gleichstromlichtbogenofen
DE4344854A1 (de) * 1993-12-29 1995-07-06 Abb Management Ag Verfahren zur Elektrodenregelung eines Gleichstrom-Lichtbogenofens und Elektrodenregeleinrichtung
DE4436353C2 (de) * 1994-10-12 1997-02-06 Abb Management Ag Verfahren zur Stabilisierung eines Wechselstromnetzes gegen Blindlastschwankungen und Blindleistungskompensationseinrichtung
US5737355A (en) * 1995-09-21 1998-04-07 Sandia Corporation Directly induced swing for closed loop control of electroslag remelting furnace
BR9713893A (pt) * 1996-12-10 2000-02-29 Namakwa Sands Limited Proteção de forno a arco.

Also Published As

Publication number Publication date
WO2000025553A1 (en) 2000-05-04
AU757828B2 (en) 2003-03-06
FI20010899L (fi) 2001-04-30
NO20011627L (no) 2001-03-30
BR9914576A (pt) 2001-07-03
AU2059900A (en) 2000-05-15
CA2346139A1 (en) 2000-05-04
US6192065B1 (en) 2001-02-20
NO20011627D0 (no) 2001-03-30
NZ510929A (en) 2002-10-25

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