Title: Control system for electrical furnaces

Abstract: A computerized control system for receiving information concerning the operating parameters in an electrical furnace, and for controlling the feeding of corrective and additive charge to the furnace, for controlling the position of the electrodes, and for controlling the power consumed by the furnace. The system includes a discharge hopper for the selective discharge of solid materials to electric smelting furnaces. The hopper comprises a transit part and a reservoir part. Because of its physical construction, the transit part will empty before the reservoir part, but when the transit part is empty the contents of the reservoir part will follow automatically.

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Inventors: Asphaug, Bjorn (Vagsbygd, NO)
Pedersen, Thor (Hauketo, NO)

Application Number: 529264
Filing Date: 1974-12-04
Publication_date: 1976-02-03
Assignee: Elkem-Spigerverket (Oslo, NO)
Primary Class(es): 373/81
Other Classes:
US Patent Ref:

1022772	Mar, 1912	Clouston	214/17.
3431344	Mar, 1969	Borreboch	13/13.
3518350	Jun, 1970	Lunig	13/12.
3534143	Oct, 1970	Carlson et al.	75/60.
3634592	Jan, 1972	Pontke et al.	13/33.

Other Refs:
Primary Examiner: Envall, Jr., R. N.
Assistant Examiner:
Attorney: Eyre, Mann & Lucas