Process for continuous manufacture of impurity and iron-free ele

Details Process for continuous manufacture of impurity and iron-free ele Process for continuous manufacture of impurity and iron-free ele

1992-10-29

1994-09-27

Reynolds, Bruce A.

Industrial electric heating furnaces

Arc furnace device

Electrode

373 97, H05B 709

Patent

active

053512669

ABSTRACT:
An improved process for the continuous manufacture of impurity and iron-free electrodes for electric arc furnaces including a mechanism allowing the replacement of an amorphous coal electrode by a graphite core electrode without extensive furnace shutdown. A dual sliding system is provided which allows an electrode to be continuously baked and provided to the furnace with or without a metal casing and which includes a special contact plate for transmitting electric current which decreases substantially the contact surface of the plate. The process is especially useful for obtaining impurity free elemental silicon.

REFERENCES:
patent: 1441037 (1923-01-01), Soderberg
patent: 1498582 (1924-06-01), Soderberg
patent: 1579824 (1926-04-01), Laurell
patent: 1613212 (1927-01-01), Westly
patent: 1691505 (1928-11-01), Walther
patent: 3524004 (1970-08-01), Nostran et al.
patent: 3819841 (1974-06-01), Persson
patent: 4575856 (1986-03-01), Persson

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