Title: Furnace installation operated by direct electrical heating according to the resistance principle in particular for preparation of silicon carbide

Abstract: In a furnace installation for producing silicon carbide in an intermittent operation, carbon electrodes arranged in the bottom of the furnace. A horizontally arranged resistance core is electrically connected to the carbon electrodes by vertically extending elements of an electrically conductive material having a higher specific conductivity than the core material. The resistivity of the connection between the electrodes and the core and the current passing through the connection produces a temperature lower than that necessary to form silicon carbide, and thereby prevents the destruction of the connections and electrodes normally caused by the downward movement of the silicon carbide roller.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Korsten, Andreas (Balkhausen, DT)
Benecke, Theodor (Grefrath, DT)
Korndorfer, Eugen (Heiligblut, DT)
Petersen, Fritz (Grefrath, DT)
Wiebke, Gunter (Munich, DT)

Application Number: 531236
Filing Date: 1974-12-10
Publication_date: 1976-04-13
Assignee: Elektroschmelzwerk Kempten GmbH (Munich, DT)
Primary Class(es): 373/114 373/132
Other Classes:
US Patent Ref:

870326	Nov, 1907	Tone	13/20.
3647384	Mar, 1972	Dessureault	13/25.
3702369	Nov, 1972	Bell	13/25.

Other Refs:
Primary Examiner: Envall, Jr., R. N.
Assistant Examiner:
Attorney: Burgess Ryan and Wayne