Three phase arc melting and reduction furnace

Details Three phase arc melting and reduction furnace Three phase arc melting and reduction furnace

1981-05-18

1983-09-20

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Power supply system

H05B 7144, H05B 718

Patent

active

044060084

ABSTRACT:
A rectangular metallurgical furnace is provided with at least six electrodes which are symmetrically arranged in two rows along the longitudinal axis of the furnace. Each pair of electrodes form a single phase circuit. A transformer is also provided for each pair of electrodes to form bifilar conductor leads. The spacing between adjacent and opposite electrodes is adjusted to provide a continuous bath surface over a maximum horizontal cross section. Adjacent and opposite pairs of electrodes are located in the corners of imaginary squares.

REFERENCES:
patent: 1113778 (1914-10-01), Gray
patent: 1127475 (1915-02-01), Marshall
patent: 1206057 (1916-11-01), Eckermann et al.
patent: 3539695 (1970-11-01), Klee et al.
"Technische Rundschau", (Technical Review), Bern No. 48, Nov. 1978, pp. 21 to 23.
Article by Dr. Eng. Mollenkamp and Dr. Eng. Kallfelz, "Modern Electro-Reduction Furnaces for Obtaining Ferro Alloys, Crude Iron, and Calcium Carbide, Electro Heat Int'l., " vol. 8, 2/72.
Metallurgy of the Ferro-Alloys by Durrer/Volkert, vol. 2, Springer Publishing Co., Berlin 1972.

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