Electrode for silicon alloys and silicon metal

Details Electrode for silicon alloys and silicon metal Electrode for silicon alloys and silicon metal

1997-10-27

1998-12-29

Hoang, Tu Ba

Industrial electric heating furnaces

Arc furnace device

Electrode

373 91, 373 97, H05B 709

Patent

active

058548076

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. An electrode according to the invention allows the same furnace to produce both FeSi of any grade and Si metal without any downtime between the gradual change from one product to the other and each time at the lowest electrode cost.

REFERENCES:
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New Electrodes For ARC Furnaces by C.F. Fulgenzi--Consultant Electrode Utilization, The ABM Conference Vitoria, Brazil, Dec. 1992.

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