Industrial electric heating furnaces – Arc furnace device – For manipulation of the charge or melt
Patent
1997-10-14
2000-02-15
Jeffery, John A.
Industrial electric heating furnaces
Arc furnace device
For manipulation of the charge or melt
373108, F27D 2304
Patent
active
060261137
ABSTRACT:
Method for the electromagnetic stirring of the liquid metal (14) in direct current electric arc furnaces which include a hearth (35) defined by a floor (13) and by side walls (15), a central cathode (11) cooperating with anodes (12) arranged on the floor (13) of the furnace and fed by a main current (I.sub.0), wherein there is an electromagnetic system generating a magnetic field inside the liquid metal (14) whose vertical (B.sub.z) and radial (B.sub.r) components interact respectively with the radial (J.sub.r) and vertical (J.sub.z) components of the overall current present in the liquid metal (14). The method and device use a first electromagnetic system including at least a first winding (19) through which a current (I.sub.1) flows and operating from inside the floor (13) and the walls (15) of the hearth (35), and a second electromagnetic system generating a secondary induced current (I.sub.3), between adjacent anodes (12), which circulates through the liquid metal (14). The first winding includes a plurality of spirals (20), at least some of the spirals (20) being arranged inside the refractory of the hearth (35) in cooperation with the floor (13) and with at least a vertical segment of the side walls (15).
REFERENCES:
patent: 1562825 (1925-11-01), Evreynoff
patent: 1683986 (1928-09-01), Northrup
patent: 1943802 (1934-01-01), Northrup
patent: 2322618 (1943-06-01), De Mare
patent: 3683094 (1972-08-01), Schlienger
patent: 4149024 (1979-04-01), Stenkvist et al.
patent: 4495625 (1985-01-01), Heberlein et al.
patent: 4528673 (1985-07-01), Stenkvist
patent: 4821284 (1989-04-01), Janiak et al.
patent: 4931702 (1990-06-01), Voronin et al.
patent: 5134628 (1992-07-01), Stenkvist
patent: 5142650 (1992-08-01), Kida et al.
patent: 5317591 (1994-05-01), Stenkvist
patent: 5383218 (1995-01-01), Bergman et al.
patent: 5410564 (1995-04-01), Takashiba et al.
patent: 5563904 (1996-10-01), Colpo et al.
Stahl Und Eisen, vol. 114 No. 8 Aug. 15, 1994 pp 75-77 Stenkvist S et al; Neue Entwicklung Fuer Drehstrom.
Bassi Cristina
Kolesnichenko Anatoly
Pavlicevic Milorad
Poloni Alfredo
Danieli & C. Officine Meccaniche SpA
Jeffery John A.
Van Quang
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