Abstract: The self-baking electrode suitable for use in an electric arc furnace comprises an elongated open ended electrically conductive casing for extending generally vertically within the furnace. A central core made of a heat conductive material is disposed within and spaced from the casing. A framework within is securing the central core to an inner surface of the casing for holding centrally the central core within the casing and for preventing an extrusion of the central core downward. The central core is surrounded by a carbonaceous electrode paste devised to cure into a solid electrode upon heating and to bond to the central core. This self-baking electrode allows the production of silicon metal in a Soderberg-type furnace without any modification to the usual slipping system or addition of another slipping system.
Type:
Grant
Filed:
October 27, 1997
Date of Patent:
December 29, 1998
Assignee:
SKW Canada Inc.
Inventors:
Rene Boisvert, Jacques Dostaler, Jacques Dubois, Dieter W. Ksinsik